Feasibility study report of tailings comprehensive utilization project

Feasibility study report of tailings comprehensive utilization project

(1969, 8888)

Chapter 1 General

1.l project name and organizer

1.1.1 Project Name: Comprehensive utilization of tailings for 1000 tons of vanadium ore mining and selection project

project

1.1.2 Construction Nature: New Construction

1.1.3 Project Construction Unit: ××××××

Legal representative: ×××

1.1.4 Construction location and scale

Construction site: ××××××

Construction scale: The daily utilization of vanadium ore mining and selection project tailings is about 998 tons, and the annual comprehensive profit is about 299,448 tons.

1.2 Basis of preparation of feasibility report and scope of study

1.2.1 Basis for preparation of feasibility report

a) Design contract for the feasibility study report of the tailings comprehensive utilization project of the 1000×/d vanadium ore mining and selection project signed by ××× company and ×××;

b) relevant basic information and related technical information provided by the project construction unit;

c) The “Decision on Implementing the Strategy of Industrial Strong County” issued by the XX County Party Committee and the County Government;

d) based on national industrial policies and industrial construction policies, decrees, regulations and guiding documents of the proposed area;

Environmental Protection Law of the People's Republic of China (December 1989)

The Mineral Resources Law of the People's Republic of China (August 1986)

Law of the People's Republic of China on Soil and Water Conservation, (June 29, 1991)

(People's Republic of China Clean Production Promotion Law, June 29, 2002)

Law of the People's Republic of China on Water Pollution Prevention and Control (March 2001)

Law of the People's Republic of China on the Prevention and Control of Solid Waste Pollution (April 2005)

State Council's Decision on Several Issues Concerning Environmental Protection (Guo Fa [1990131)

Notice on Implementing the Regulations on Environmental Protection Management of Construction Projects

"National Outline of Ecological Environment Protection" (Guo Fa [2000] No. 38, November 2000)

1.2.2 Research work scope and report preparation principles

a) Implement the tailings storage and transportation and utilization plans and conditions according to the production plan and production scale proposed by the project;

b) basic conditions;

c) According to the market and technical conditions, rationally determine the comprehensive utilization plan of resources, focusing on the feasibility of the technical plan and the feasibility of the economy

d) Under the premise of meeting the relevant national safety regulations, save land, reasonably meet the requirements of the owners, and achieve safety, economy, reliability and practicality.

e) Implement environmental protection, safety and industrial hygiene guidelines

f) Scientifically and pragmatically, fair, objective and scientifically reflect the actual situation of the project and ensure the quality of the preparation of the feasibility study report

g) Reliability of tailings utilization

1.3 Key issues of feasibility study

a) industrial policy;

b) comprehensive utilization plan for tailings;

c) Social, ecological and economic benefits of the project

1.4 Overview of research work

The project consulting unit will organize relevant professional and technical personnel to collect relevant basic materials in 2×××years×× months, and send project leaders and key professionals to conduct extensive inspections on the main planning schemes of the proposed projects, and the project area. The surrounding cement production enterprises such as Hubei and Henan and the building materials production enterprises met with each other to discuss and implement the relevant situation. Relevant professional and technical personnel were organized to comprehensively understand the geological, hydrological and meteorological conditions of the project site and to implement the design working conditions.

1.5 Recommended programs and conclusions

Comprehensive utilization of the tailings of the loo-ton vanadium ore mining and selection project for daily processing, mainly as a blending material for the production of cement enterprises, not only can stabilize the performance of cement. Moreover, through the adjustment of the cement production formula, the use of clay and gypsum can be reduced, and the tailings slag is incorporated into the new building wall brick to greatly reduce the amount of clay.

Through the implementation of this project, the treatment of waste slag in the production of vanadium pentoxide is effectively solved, and it is not necessary to occupy the land to construct the tailings pond. At the same time, turning waste into treasure, reducing the consumption of clay, gypsum and other resources by cement production enterprises and building materials enterprises. Therefore, the project has good social and ecological benefits and has certain economic benefits.

1.6 Total investment of the project

The total investment ×× million, all funds raised by the construction unit to solve.

1.7 Research conclusions

1.7.1 Conclusion

a) The construction of the project is in line with the national industrial policy and development direction.

b) has good social and ecological benefits.

c) The basic conditions for the implementation of the project are mature and reliable.

d) The project comprehensive utilization plan is feasible.

e) The project has certain economic benefits

1.7.2 recommendations

a) The construction conditions of the project are good. In order to speed up the construction progress, it is advisable to carry out the relevant matters in the early stage of the project as soon as possible, and create favorable conditions for the early entry into the project construction.

b) The project has low investment and good ecological benefits. It is hoped that the local government and relevant departments will give more policy support to enable the project to be implemented as soon as possible, to bring out ecological and social benefits as early as possible, and to treat 1000 tons of vanadium ore for daily treatment. Prerequisites for the preparation of the project.

In summary, the project is feasible.

Chapter II Project Background

2.1 Project proposal

2.1.1 Project organizer

The project is undertaken by the ××× company. ××× company was established in 2××× years, registered in the ×××× Administration for Industry and Commerce, registered capital ×××10,000 yuan, legal representative ×××. Business scope: vanadium mining, production, sales, vanadium and iron processing. Sales.

2.1.2 Project Background

××× County is located in ×××, with a total area of ​​××× thousand square kilometers. The project site is rich in vanadium ore resources. According to the mineral resources surveyed by the geological department, the average grade of vanadium pentoxide in the ore is 1.08%, and the highest is 1.91. %the above. The ore belt is a sedimentary rock mass, its structure is stable, and the joint development is relatively complete.

The XX Municipal Party Committee and the Municipal Government regard the development and processing of mineral resources as the new economic growth point of XX, and include it in the medium and long-term planning of economic development and the “X×× breakthrough development”. The XX County Government issued the “Implementation of Industry”. The decision of the strong county strategy. Clearly put forward "integration of resources, enlarge and strengthen the mining industry." In this context, XX Company proposed the construction of a 1,000-ton vanadium ore mining project.

××× Company's daily processing loo ton vanadium ore mining and selection project faces the problem of production tailings treatment. The implementation of this project has enabled the secondary comprehensive utilization of tailings waste slag produced by vanadium pentoxide, effectively solving the production bottleneck.

2.2 Necessity of project construction

2.2.1 The organic combination of resource advantages and comprehensive utilization of resources is a prerequisite for production.

Vanadium resources in the territory of ××× County. No matter in terms of reserves or quality, it is rare in China, rich in resources and excellent in quality. It provides a reliable raw material guarantee for the construction of 1000 tons of vanadium ore mining and construction projects. However, a large amount of waste generated in the production of vanadium pentoxide is difficult to handle. The construction of the tailings pond not only faces the problem of occupying soil (forest), but also has great potential safety hazards. The construction of the project is an organic combination of resource advantages and comprehensive utilization of resources, which has great practical significance for the implementation of enterprise production.

2.2.2 Providing raw materials for cement and other building materials manufacturers is an inevitable requirement of social development.

With the continuous development of the social economy, the demand for cement in the building materials industry is increasing year by year. The use of vanadium pentoxide to produce waste slag and tailings to make building materials such as cement and hollow bricks, waste utilization, has far-reaching significance for vanadium mining and processing. At the same time, it is an inevitable requirement for the comprehensive utilization of resources by social development, and social benefits are remarkable.

Chapter III Construction Conditions

3.1 Ore

The main vanadium ore and limestone of this project are used for comprehensive utilization of tailings waste after extraction of vanadium pentoxide. The grade of ore mining point in the ××× mining area can fully meet the needs of extracting vanadium pentoxide.

According to the census data and the neighboring area vanadium ore resources, the mining resources are summarized as follows:

a) Ore quality

Mineral composition and structure

Mineral composition: ore mineral composition is mainly non-metallic minerals, metal minerals are less non-metallic minerals mainly quartz , mud. Times as calcite, graphite, and other carbonaceous: metallic minerals limonite most, pyrite, iron, vanadium, iron, vanadium and the like anatase. The main mineral characteristics are as follows:

Quartz: Different characteristics in different meteorites. In argillaceous rocks, quartz is generally finer, with a particle size of ≤0.02 mm. In siliceous rocks, the quartz pull is 0.05-0.lmm, tightly embedded, and often has directional growth.

Mud: very fine, mainly kaolinite and hydromica . Colloidal limonite pollution in surface rocks

Carbonaceous: It is evenly distributed in carbonaceous mudstone, and it is distributed in a fine layer in carbon siliceous rocks.

Limonite: common in rocks, with a particle size of 0.005-0.lmm, mainly in the form of gelatinous, followed by pyrite microcrystals, which are unevenly distributed in the form of scatters, lentils and fine veins in the rock bedding and fissures.

Pyrite: a sparse star-like distribution in the rock with a particle size of 0.005-0.1 mm; a cubic crystal form. Oxidized into limonite ore structure and structure in shallow rock: the ore structure is mainly cryptocrystalline structure, cryptocrystalline-mud structure, silty structure; the second is granular, colloidal, pseudomorphic structure: the ore structure is slightly Layered, interbedded (striped), tuberculous, plate-like structures, etc.

Ore natural type and ore-bearing

According to the ore-bearing rock, the natural types of ore can be divided into three types: (carbon-containing) siliceous rock type, (carbon-containing) siliceous rock interbedded mudstone type, and [charcoal-containing) mudstone type.

(carbon-containing) siliceous rock type vanadium ore: mainly composed of black carbon siliceous rock, with little or no shale interlayer. According to statistics, its V ₂ O ₅ grade is generally 0.76-1.27%, the highest is 1.91%, the lowest is 0.68%, and the arithmetic average grade is 1.12%.

(charcoal-containing) mudstone-type vanadium ore: mainly composed of mud (page) rock with very thin layers or thin strips of siliceous rock. Its V ₂ O ₅ grade is generally 0.85-1.16%, the highest is 1.69%, the lowest is 0.60%, and the arithmetic average grade is 1.06%.

(carbon-containing) siliceous rock interbedded mudstone type vanadium ore: it has the dual characteristics of carbon siliceous rock type and mudstone type ore. Its V ₂ O ₅ grade is generally 0.83-1.53%, the highest is 1.75%, the lowest is 0.59%, and the arithmetic average grade is 1.05%.

Ore composition

In addition to V ₂ O ₅ industrial requirements, Ag content is relatively high, the remaining Au, CuPb, Zn, Mo, CO, Ni, Pt, Pd and other content are (very) low:

Hazardous components P ₂ O ₃ , S content is high, As content is low

b) ore body surrounding rock and stone

Ore body surrounding rock

Slate stone ore on the bottom Sinian thick siliceous dolomite rock Dengying third segment. Competent rock is strong: the bottom of the top plate GRAPTOLITE Cambrian rock section of a second thin layer of limestone (marl) with thin mudstone, capable of weak rock.

Stone in the ore body

Controlling the ore body, there are stones in the mine. Through detection, the thickness of the stone layer is 2.44-6.96m and 17.32m. It is part of the ore body or is treated as a lentils, but has little effect on the main ore body.

According to the related materials, vanadium ore, in addition to high content of V, Au, Ag, is also accompanied by Cu, Pb, Zn, Mo, As, Sb, CO, Pt, etc., with micro-element combination characteristics of basic magmatic rocks. In addition, there is a volcanic sedimentary interlayer in this layer in the south, and the localized ore-bearing carbonaceous rock contains unstable layered barite rock, which shows that the ore-forming material of the jet hot water deposit is complicated. Deep source, multi-source characteristics.

3.2 Infrastructure conditions

The roads in ×× County are criss-crossed, extending in all directions, and the XX National Road passes through the XX County. The XX Railway and the XX Expressway in the XX County have been put into operation, and the XX West X× Highway arrives in Xi’an City. East XX kilometers arrives at XX City, Henan Province, and is XX kilometers away from XX City, Hubei Province. 3. × × Road, × × Road three-level highway unblocked. The traffic is smooth, the post and telecommunications, telecommunications, mobile communications are smooth, the water and electricity supply is sufficient, and the site is in good condition.

3.3 Site

3.3.1 Location of the site

××县 is located at ××, total area ××km ²

The site of the project is dry ××, which is about ××km from the ×× county, and is XX km away from the ×× road. The traffic conditions are convenient.

3.3.2 Natural conditions

a) The area built at the site is a low mountain emperor, and the valley is relatively developed. No fault structures or other adverse engineering geological phenomena are found in the area.

b) The hydrogeology of the site is simple, the surface runoff is relatively developed, and the water quality is sufficient to meet the national industrial water standards.

c) meteorological conditions

The warm temperate climate zone and the northern subtropical zone of the plant are warm, the gas is warm, the rainfall is abundant, the four seasons are distinct, and the continental monsoon climate is obvious.

Annual average temperature: 14 ° C

Extreme temperature: 40.5 °C

Minimum temperature of the extreme: -12.1 ° C

Annual average rainfall: 803.2mm

Maximum annual rainfall: 1254.3mm

Minimum annual rainfall: 560.3mm

Annual average ground temperature: l6.3 °C

Annual average wind also: 1.7m / s

Leading wind direction: southeast wind

Average annual sunshine hours: 1973.5h

Frost-free period: 209d

Maximum frozen soil depth: 14cm

d) The site area is open, the transportation conditions are convenient, the geological conditions are good, and the water supply and power supply can be modified and used.

3.3.3 Site plan

a) Mine location

The mine position is ××, which is under the jurisdiction of XX Township. The geographical coordinates are:

East longitude: 110°27′17′′^110°29′04′′

North latitude: 33°18′54′′-33°19′20′′

The mining area is defined by 4 inflection points whose coordinates are:

Point number × Y

1 3688600 37449400

2 3688100 37452000

3 3687800 37452000

4 3688250 37449250

Area: × × square kilometers

b) also proposed beneficiation plant

The proposed site of the ore dressing plant is located at XX, covering an area of ​​34 mu. The site is relatively flat and the engineering geological conditions are good. The area on the top of the mountain and on both sides of the slope is large, which can meet the current and future development needs of the project. The location of the site is south to the north and meets the site selection requirements.

The region, with the consent of the XX County Government, focused on the development of vanadium resources and planned to be industrial production areas. Therefore, the construction of a daily processing 1000 tons of vanadium ore mining and selection project tailings comprehensive utilization project in line with local development norms.

c) Site construction conditions

Topography, landform, earthquake situation

The mining area belongs to the middle and low mountain areas, and the cutting depth is medium and deep cutting area. The slope of the terrain is generally 25°-30°. The dolomite in the mining area is widely distributed and the overall slope is not large. The clay rock (ie, the ore-bearing rock formation) is soft, generally slower in terrain or forming smaller valleys. A "saddle" terrain is formed on the ridge. In the valley section, the dolomite distribution area is generally "V" shaped. The clay rock distribution area is generally "U" shaped.

The southwestern part of the county is higher in the southwest and north, and lower in the southeast and middle. It is a mountainous area with landslides and low mountains and rivers. It is a shallow hilly landform. The basic condition is “eight mountains, one water and one field. The ore-provisioning site is a shallow mountain landform. The plant area is basically flat and gentle slope topography. For the short hills and convex terrain, the relative height difference is about 10m, which consists of gentle slopes and gentle gullies.

According to the local geological data and national standards, the "China Seismic Intensity Area Division Map", the basic seismic intensity of the area is seven, because all buildings belong to general industrial and civil buildings, so the design intensity is adopted according to the basic intensity.

Hydrogeology

Landform and surface water

The ore body distribution area belongs to the middle and low mountainous areas, with an altitude of about 1300m and a minimum of about 1100m. The terrain is high in the north and low in the south. The steep slope is steep and the terrain is favorable for natural drainage. The topography of the dolomite area is steep, the terrain of the mudstone area is slow, and the valley section is gentle. It is "U" type and "V" type.

Although there are many gullies dominated by the north and south in the area, they are mostly “dry” gullies due to the proximity of the mountains. Only the Bailuchu River on the south side of the area is affected by atmospheric precipitation, which is the Quaternary Sunshine Water and Ditch of the Valley. The side bedrock fissures are gathered together.

There is no surface water body in the area, and no water-filled rock volume distribution is found.

The surface water is clear and transparent, colorless, odorless, tasteless, sweet and delicious, with good water quality, can be used in industry and life, and has sufficient water.

Aquifer and aquifer

Aquifer: There are two types of porphyrin deposit pore water aquifer and layered bedrock fissure water aquifer. The former is mainly distributed in the wide valley of the valley, which is the Quaternary residual slope. Flooding, a few meters wide, nearly 100 meters thick, within 10m thick, composed of sandy loam and gravel soil, good pores, loose structure, strong water absorption and water seepage capacity, strong water-rich. The general inclusion in the gap is the main water and permeable layer in the area.

Layered bedrock fissure pore water aquifer: the dolomite in the southern part of the mining area and the dolomite in the north, the local fissure is relatively developed, the fissure is watery, and it is a heterogeneous fissure aquifer. The water-bearing part is related to the structure. The flow rate is small: the fragmented siliceous rock in the ore layer can also form a fissure aquifer.

Aquifer: Cambrian mudstone and marl are aquifer. The water barrier layer is a mineralization layer. Exploration and mining projects above the erosion surface (1100m elevation) are conducive to natural drainage.

Hydrogeological exploration type

The deposit is a fractured water-filled deposit with simple hydrogeological conditions.

3.3.4 Social and economic conditions

The total area of ​​×× County is ×× square kilometers, the area of ​​cultivated land is ××10,000 mu, and the population is ××10,000. Among them, the agricultural population is × × 10,000, and the agricultural labor is × × 10,000. The total land area is 3.474 million mu. Among them: farmland 409,400 mu, accounting for 11.8% of the total area. The basic farmland is 189,000 mu, accounting for 48.2% of the cultivated land area. The per capita is 0.80 mu; the forestry land is 2.883 million mu, accounting for 77.2% of the total area; the animal husbandry land is 209000 mu, accounting for 6.0% of the total area. The water area is 59,000 mu, accounting for 1.7% of the total area; the hard-to-use land and non-production land are 135,000 mu, accounting for 3.9% of the total area.

The project area is sparsely populated, the vegetation is well preserved, there are no industrial and mining enterprises nearby, and there are no cultural relics 3.4 construction land.

The daily processing of 1,000 tons of vanadium ore mining and selection project construction land of 34 acres, has reached an intention with the people of the project construction site, the masses use the land use rights to participate in the project construction. If you do not participate in business operations, the company will pay a fixed dividend to the people every year regardless of profit or loss to ensure that the interests of the people are not harmed. The stock period is 20 years. The construction land use procedures have been handled in accordance with the soil transfer policy. The daily processing of l000 tons of vanadium ore mining and selection project tailings comprehensive utilization project is attached to the vanadium pentoxide production project, covering an area of ​​about 6 acres. Within 34 acres of engineering land.

3.5 Advantages of project implementation

3.5.1 Policy environment

×× County is XX kilometers away from Shangluo City, with convenient transportation and fast communication. It has high sensitivity to national, provincial and municipal economic policies. In recent years, the XX Municipal Party Committee and the Municipal Government have regarded mineral processing as a new growth point of the XX economy, and have been included in the important position of economic development planning, and issued relevant policies and regulations. The XX County Party Committee and the County Government issued the “Decision on the Implementation of the Industrial Strong County Strategy” in XX County, which stipulates the development of industrial enterprises from many aspects, and puts forward higher requirements for environmental protection and resource utilization. Therefore, the project implementation policy environment is good.

3.5.3 Market advantage

Since the demand for vanadium is closely related to the steel industry, the production of vanadium pentoxide is relatively stable, and the tailings waste produced by the production is continuous and stable. As a raw material section of cement manufacturing enterprises, it provides different characteristics of cement production enterprises. .

Chapter IV Engineering Technology Solutions

4.1 technical solution

4.1.1 Proposed mining plan

a) Mining program

The vanadium ore body is stable and continuous, the ore body is soft and the thickness is not large. The stripping workload is large. The overall integrity and stability of the rock at the top and bottom of the ore body are good. Hydrogeology, engineering geology, and environmental geology are simple. The ore is divided into two categories: oxidized ore and primary ore. Suitable for open pit and underground mining.

The proposed mining starts from the east ditch of the Dazigou Formation, first open-pit mining, and then underground mining.

Open pit mining process

Loading operation: The vanadium ore section mining does not use the blasting method. It is planned to be submitted to the 220 type excavation machinery and the type 30 loading equipment , and the sub-step mining is carried out from top to bottom.

Transportation: Use the 2 ton dump truck that is surplus in the Zhuanghui to directly enter the mining site for transportation.

Dispatch operation: With the transportation of ore, the waste and waste soil will be transported to the dumping site with a 2 ton dump truck.

Underground mining process

The appropriate way: According to the line of the ore body, the rough-formed, slope-like, surface topography and other real-standard mining systems are suitable for Pingshuo. According to the thickness of the ore body, the thin ore body has an average dip angle of 44° and the surrounding rock of the top and bottom plates is stable. The mining method should adopt the shallow hole slip method.

Mining method: According to the vanadium ore body shape and occurrence conditions. The segmented empty field method is recommended. In view of the small scale of mine production, in order to minimize the loss and depletion of ore and to consider the technical level of workers, it is recommended to use the segmented empty field method of shallow hole mining.

There is a natural deep ditch below the mining site. A barrage dam is built according to the mountain, and the waste rock is filled in the deep ditch. The barrage dam is 5m wide, 150m long and 20m high. When constructing a dam, the flood control factor should be fully considered and designed to withstand a flood in a hundred years.

b) Mineral processing technology program

The production process of vanadium mainly includes sodium sintering and acid leaching. Because these two processes have certain governance difficulties for SMEs in environmental protection, in recent years. With the increasing market demand for vanadium, some enterprises and research units have successively developed calcium calcination-acid leaching processes, composite roasting-water immersion processes.

In order to reduce the pollution to lower in the production process, reduce the harm to the environment, and actively introduce advanced technology to optimize and improve the original sodium roasting. Through multi-party investigation, it is determined that the original sodium baking start-burning process is improved into a composite roasting-water leaching process, reducing the amount of sodium chloride by 90%, reducing the generation of waste pollutants from the source, and reducing the cooling of the flue gas by the spray adsorption device. And the group strength, achieved significant results in the pollutant discharge indicators, the process has been feasibility study and successful application of scientific research units. Therefore, the project is planned to use this process for production.

4.1.2 Process selection

a) Raw material section: equipped with an open stock yard of about 3000m2, in order to prepare the ore to dry, with 1000V2 original library, reserve the dried ore, use the crusher that can crush the ore to 60 mesh, configure it into a ball machine, ore. After pulverization, a qualified mineral powder is added to the soda ash, industrial salt and fuel coal , and the ball is formed according to a conventional method, and the unqualified return is re-pulverized.

b) Roasting section: The qualified raw ball provided by the raw material workshop shall be sent to the flat animal for raising and burning. The main equipment of this working section is the roaster.

Oxidative roasting reaction of salt

4VO ₂ +O ₂ =2V ₂ O ₅

V ₂ O ₃ +O ₂ =V ₂ O ₅

Na ₂ O+V ₂ O ₃ =2NaVO ₅

Oxidative roasting reaction of soda ash

4VO ₂ +O ₂ =V ₂ O ₅

/V ₂ O ₃ +O ₂ =V ₂ O ₅

/Na ₂ CO ₂ =Na ₂ O+CO ₂

/Na ₂ O+V ₂ O ₃ =2NaVO ₃

Or NaVO ₃ +V ₂ O ₅ =2NaVO ₃ +CO ₂

Causes of hydrogen chloride production and disappearance

In the temperature range of 500-800 ° C, NaCl can directly react with water vapor to form HCI. The NeCl consumed during the dry calcination can be reduced by the following reaction, and the generated HC1 is also eliminated.

NaCI+H ₂ O=NaOH+HCI

2NaVO ₃ +HC1=2NaC1+V ₂ O ₅ +2H ₂ O

Leaching section: The leaching section is water immersion, and the water immersion solution is sent directly to the alkaline ion exchange section.

Ion exchange-sink vanadium section: The purified vanadium-containing mother liquor enters the exchange column for exchange and elution. The eluent was placed in a vanadium-bearing bath and ammonium chloride was added to precipitate ammonium metavanadate.

NaVO ₃ +NH ₄ Cl=NaCl+NH ₄ VO ₃

Resin adsorption and desorption

Adsorption reaction:

V ₄ O ₁₂ (water) + C ₁₄ ^{4 -} (resin) = V ₄ O ₁₂ ^{4 -} (resin) + 4C ₁₄ ^{4 -} (water)

Analytical reaction:

V ₄ O _{124 -} (resin) + 4C ₄ ^{4 -} (water) = V ₄ O ₁₂ ^{4 -} (water) + 4C ₁₄ ^{4 -} (resin)

Vanadium pentoxide formation: heating of ammonium metavanadate by calcination to obtain vanadium pentoxide

4.1.3 Quota of raw material and auxiliary materials consumption per ton of vanadium pentoxide

Process flow

Tons of raw materials and auxiliary materials

4.2 Engineering plan

4.2.1 Main buildings

The main structures are shown in the table below.

Main building structure

4.2.2 Building Materials Division

Building materials are provided by local sources.

4.2.3 Construction conditions

There are civil construction teams in the area, and their technical level can meet the construction requirements of this project.

According to the engineering geological report, the endurance of the proposed site can meet the design requirements, so the foundation treatment is generally not done. In order to prevent the tailings from overflowing, the yard is surrounded by a stone masonry dam with a width of 2m and a height of 2m. The top width is lm. At the same time, in order to prevent the rainwater from scouring the tailings slag and causing water pollution, the steel frame beam is placed on the steel frame beam in the yard, and the rainwater concentration is not in contact with the tailings waste slag.

4.3 Production Technology Solution

4.3.1 Vanadium pentoxide product plan and quality standard

a) Product plan

V ₂ O ₅ 50kg/bag, packed in a composite bag.

b) product quality standards

The product quality has reached the national standard GB3283-87 metallurgical 98, 99V ₂ O ₅ standard. Product standards are as follows:

V ₂ O ₅ product quality standard

4.3.2 Production technology plan

a) Work system

300 working days a year, three shifts a day, 8 hours per shift.

b) Workshop organization

The production of the project is fully responsible for the production work by the workshop director. Each production cycle consists of 2-3 people to carry out technical management of each production process, responsible for overall production technology management and supervision and guidance work 44 material consumption

Main raw and auxiliary materials consumption

Main raw and auxiliary material consumption table

4.5 Material balance calculation

The material balance is shown in the following table:

Material balance sheet (calculated by V ₂ O ₅ t/t)

4.6 total map

4.6.1 General layout basis

a) (Code for Fire Protection of Building Design) OBJ16-87 (2001 Edition)

b) "Code for design of mine roads" GBJ122-87

c) "General Plan for Design of Industrial Enterprises" GB50187-93

d) "Sanitary Standards for Industrial Enterprises Design" TJ36-79

e) "Code for Design of Noise Control for Industrial Enterprises" GBJ87-85

f) "Specifications for Lighting Design of Industrial Enterprises" GB50033-91

4.6.2 Plane layout

Because the plant area is low hill and convex terrain, the relative height difference is 30m, and the area is 30 mu. According to the requirements of topography and process flow, each workshop is arranged in a stepped shape. The plant area is divided into eight stages from top to bottom. The first step is the crushing workshop. The second step is the ball-making workshop, the third and fourth steps are the roasting workshop, the fifth and sixth steps are the leaching workshop and the liquid storage tank, the seventh step is the ion exchange workshop, and the eighth step is the vanadium-forming workshop. The exhaust gas treatment is arranged in the flue between the first step and the chimney. The laboratory, power distribution room, machine repair workshop, and finished product workshop are arranged on the east side of the third step, and the warehouse is placed on the third north-south plane. The chimney is placed on a hill 100 meters east of the first step crushing workshop. The tailings slag temporary storage yard is set at the eighth level.

4.6.3 Vertical arrangement

a) Meet the requirements of the production process.

b) Ensure that the site is not threatened by floods and regional water accumulation, and reasonably select the site design elevation and reasonable exclusion methods.

c) The proposed site of the project is flat. The amount of earth and stone works is mainly the earthwork of the construction, structure and equipment foundation, pipeline foundation and road foundation.

d) For the convenience of driving, the road longitudinal slope is controlled within 0.5%.

e) The indoor floor elevation of the 1000 ton/day production plant is 0.3 m higher than the outdoor ground elevation.

4.5.4 Plant area greening

Between the production area and the power zone, green belts are arranged around each building unit, which is conducive to improving the working and living environment of the staff, and thus is conducive to the improvement of product quality.

4.6.5 Transportation inside and outside the plant

a) The ore is solved by local social transport forces.

b) The tailings slag is transported to all cement production enterprises and building materials production enterprises by local social transportation forces.

c) Other wastes are solved by social transport forces.

d) Finished product transportation is mainly solved by the processing plant vehicle or local transportation force.

e) In-plant transportation depends on self-owned vehicles

Whole plant transportation scale

4.7 tailings slag and utilization plan

4.7.1 tailings slag production

The daily production of tailings slag is about 998 tons, and the annual output is 299,448 tons.

4.7.2 Main components of tailings slag

Tested by cement manufacturers, the chemical composition of tailings slag is as follows:

Vanadium slag chemical analysis results report unit: %

4.7.3 tailings slag utilization plan

The project unit can inspect and understand with the surrounding cement manufacturing enterprises that the tailings slag can be mixed with 5-10% substituted clay in the raw material, and the 5-10% substituted volcanic ash project unit can be blended in the mixed material. To reach a preliminary intention, the tailings slag mainly goes to the following table:

Tailings slag consumption quantification table

Chapter V Environmental Protection

5.1 Basis of preparation

a) "Design Rules for Environmental Protection of Construction Projects"

b) Regulations on Environmental Protection Management of Construction Projects

c) relevant basic information provided by the construction unit

5.2 Environmental design adopts the following standards:

a) "Industrial Enterprise Design Hygiene Standards" G8Z1-2002

b) General Rules for Safety and Hygienic Requirements of Production Process GB12801-91

c) "Administrative Measures for Environmental Protection of Construction Projects" (86) Guohuanzi No. 003

d) "Design Rules for Environmental Protection of Construction Projects" (86) Guohuanzi No. 002

e) "Non-ferrous metal industry solid waste pollution control standards" GB5085-85

f) Law of the People's Republic of China on the Prevention and Control of Occupational Diseases (Order No. 60 of the President of the State of October 27, 2001)

g) "Environmental Protection Law of the People's Republic of China" (December 26, 1989, Presidential Decree No. 22)

5.3 Sources of pollution and pollutants produced during the production process

According to the production experience of similar manufacturers in China, draw on their advantages and improve their problems. During the construction process, the project strictly follows the “three simultaneous” requirements to ensure that the pollution control facilities are put into operation together with the production facilities.

The waste residue is mainly the filter waste residue after the alkali leaching and washing of the calcined material, and the discharge slag amount is about 299,448 t/a, 998 t/d.

The waste slag is transported to the slag yard for stacking. Since the waste slag contains high silica, it can be used as cement clinker. Or used as a non-burnt brick. Tested by the Institute of Geology: The radioactivity of bricks is 20.5, which is far lower than the national standards for the emission of building materials. Therefore, it is safe to consider the vanadium slag to make bricks.

The construction unit has implemented the comprehensive utilization plan for waste slag, and transported the waste slag to the cement manufacturing enterprises such as Qindong Cement Plant, Danfeng Cement Plant and Henan Luanchuan Cement Plant in Shangnan County for cement raw materials.

5.4 Environmental Greening

According to the characteristics, it is preferred to plant trees that are suitable for dust prevention. The crown can be planted on both sides of the yard and on both sides of the road, and the branches are low. The leafy shrubs are used to match the heights to reduce dust damage.

5.5 Environmental Management

Set up an environmental management organization that is supervised by the competent leadership, responsible for organizing, implementing, and supervising the monitoring plan for the “three wastes” emissions of the enterprise, the operation of environmental protection equipment, and the environmental management plan. After the project is put into production, it is entrusted to the local environmental monitoring department for monitoring.

5.6 Environmental Impact Analysis

The EIA report on the daily processing of 1000 tons of vanadium ore mining project has been the provincial Environmental Protection Department.

The tailings comprehensive utilization project is to reuse the waste residue. The project itself is an ecological project that protects the environment and protects resources. The construction of the project is feasible.

Chapter VI Health

6.1 Industrial Hygiene

6.1.1 tailings yard sanitation

a) The tailings yard area should be kept clean and dry, and various health management systems should be formulated.

b) Non-production items and personal sundries shall not be stored in the field. The tailings slag of the yard should be organized and transported according to the production needs of each cement manufacturing enterprise.

6.1.2 Personal hygiene of employees

a) Before the employee is employed, he or she must go through a physical health check to confirm that he can be employed after being healthy;

b) Workers must wear work clothes and protective masks and wear safety helmets during working hours;

c) Employees can't walk around in the workshop during work hours, work in a row, and can't talk loudly or chat.

6.2 Anticipation effect is expected

6.2.l This design is carried out in strict accordance with the relevant regulations and specifications, and the measures adopted are also effective. According to the practice of similar enterprises, the basic conditions for ensuring occupational safety and health are available.

6.2.2 To ensure the safe production of enterprises, in addition to creating the necessary conditions in the design and infrastructure, it is necessary to train qualified technical workers, strictly in accordance with procedures and regulations, and strengthen the maintenance of production facilities. Improve the management level of enterprises and achieve civilized production.

Chapter VII Investment Estimation and Fund Raising

7.1 Project Overview

××× Company's daily treatment of 1000t vanadium ore mining and selection project tailings comprehensive utilization project is a new construction project.

7.2 scope of preparation

According to the requirements of the project, the infrastructure of the proposed project site and the design information provided by the relevant professional design. The project content included in this estimate is the temporary hardening of the tailings dump, to prevent secondary pollution caused by the tailings slag. Construction of a dam. At the same time, in order to prevent rainwater from scouring and forming water pollution, color steel slabs are laid on the steel frame of the yard, and the rainwater does not contact the tailings slag.

7.3 Basis for preparation

7.3.1 Designing design plans and data provided by relevant professional departments

7.3.2 Estimate the cost of the project construction (construction) construction project, mainly refer to the relevant preliminary and final accounting indicators of the similar projects in the proposed site, and make appropriate adjustments in conjunction with the project. Calculated by the yuan / m ² , yuan / m ³ indicators.

Tailings yard investment estimate

7.4 Total investment

Total project investment × × million

7.6 Fundraising

The total investment of the project construction is XX yuan, all of which are self-financed by the enterprise.

Chapter VIII Conclusions and Recommendations

8.8 Evaluation conclusion

It can be seen from the above analysis that the vanadium ore resources in the ××× County provide a reliable raw material guarantee for the construction of a daily processing of 1,000 tons of vanadium ore. A large amount of waste residue is produced in the production and production of vanadium pentoxide. The construction of the tailings pond not only faces the problem of occupying soil (forest) but also has great potential safety hazards. The use of vanadium pentoxide to produce waste slag and tailings to produce building materials such as cement and hollow bricks, waste utilization, has far-reaching significance for vanadium mining and processing, and is an inevitable requirement for social development for comprehensive utilization of resources, with significant social and ecological benefits. So this project is feasible.

8.2 recommendations

a) The construction conditions of the project are good. In order to speed up the construction progress, it is advisable to carry out relevant matters in the early stage of the project as soon as possible, so as to create favorable conditions for early entry into the project construction.

b) The project has low investment and good ecological benefits. It is hoped that the local government and relevant departments will give more policy support to enable the project to be implemented as soon as possible, to bring out ecological and social benefits as early as possible, and to treat 1000 tons of vanadium ore for daily treatment. Prerequisites for the preparation of the project.

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