WO2016127869A1 - 一种矿选系统 - Google Patents

一种矿选系统 Download PDF

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Publication number
WO2016127869A1
WO2016127869A1 PCT/CN2016/073193 CN2016073193W WO2016127869A1 WO 2016127869 A1 WO2016127869 A1 WO 2016127869A1 CN 2016073193 W CN2016073193 W CN 2016073193W WO 2016127869 A1 WO2016127869 A1 WO 2016127869A1
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Prior art keywords
support frame
layer
magnetic separation
disposed
dry
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PCT/CN2016/073193
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English (en)
French (fr)
Inventor
胡沿东
张进才
张珂
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胡沿东
张进才
张珂
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Publication of WO2016127869A1 publication Critical patent/WO2016127869A1/zh

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03BSEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B9/00General arrangement of separating plant, e.g. flow sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00Magnetic separation
    • B03C1/02Magnetic separation acting directly on the substance being separated
    • B03C1/30Combinations with other devices, not otherwise provided for
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B9/00Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets

Definitions

  • the present invention relates to a mineral separation system, and more particularly to a mineral separation system for ferrous and non-ferrous metals.
  • the mature magnetite ore selection technology is dry crushing + wet grinding + wet beneficiation (as shown in Figure 1), the floor space is very large, the civil engineering foundation of the equipment is also very complicated, and the construction is difficult; the existing The mining technology requires a large amount of water for grinding and wet magnetic separation, so the water consumption is large, and the tail drainage causes water pollution.
  • Chinese patent CN102489373B discloses an iron ore processing beneficiation process, which is roughly the following steps: 1. The raw ore is crushed into a coarse ore having a size of ⁇ 30 mm, and the coarse ore is sent to the hoist by the first belt conveyor; The machine raises the ore to the second belt conveyor which is higher, and the second belt conveyor feeds the unpowered air sorter for air selection. The coarse ore with a particle size of >1.5 mm passes through the steady flow chamber and enters the roller press. The formed cake is mixed with the coarse ore fed from the first belt conveyor and then lifted again by the second belt conveyor to the unpowered air sorter for unpowered air separation; 3.
  • Fine ore powder with a particle size of ⁇ 1.5 mm It is sent to the power air sorter for air selection, and the ultrafine powder with particle size ⁇ 0.2mm is directly selected into the cyclone dust collector.
  • the unselected coarse material is sent to the magnetic separator to select fine iron powder, gangue mineral.
  • the cyclone dust collector will select the differential of particle size ⁇ 0.04, the unselected fine material is sent to the magnetic separator to select the fine iron powder, the gangue mineral is discharged as the tailings, and the fine powder enters the bag.
  • Collecting in dust collector or electric precipitator; 5. Collecting part for magnetic selection The powder machine selects fine iron powder, and the gangue mineral is discharged as tailings.
  • a grinding system as shown in Figs. 2, 3, and 4 and the like is designed by those skilled in the art based on the above-mentioned patent documents. However, the following problems are still prevalent in production systems made according to this patent document:
  • the number of belt conveyors required for the three schemes of Figure 2, Figure 3 and Figure 4 are at least 11, 9 and 17 respectively.
  • the cost of the belt is 80.
  • the service life of the belt is about 6 to 12 months under normal working conditions, so the belt is replaced once every 6 to 12 months, which costs a huge cost. Calculated on a production scale of 70 tons per hour, it consumes 23 kWh per hour and consumes a lot of energy.
  • the selected magnetite grade is low and the output is low.
  • the grade of iron in the selected material is 10% to 15%
  • the grade of fine powder selected by one magnetic separation is about 30%
  • the fine powder grade selected by one magnetic separation is about 40%
  • the yield is about 40 tons
  • the fine powder grade selected by one magnetic separation is low
  • the number of machines is selected to improve the grade. Although increasing the number of magnetic separations can improve the grade of fine powder, the best record of the fine powder grade selected by the prior art dry magnetic separator by multiple magnetic separation is 45-50%.
  • iron fine powder ⁇ 58% (the prior art wet magnetic separator can reach more than 60% grade); if you consider increasing the number of magnetic separators, you need to increase the feed conveyor belt, magnetic The increase in the selection machine and the belt conveyor will increase the floor space and increase the energy consumption and belt consumption.
  • a mine selection system includes a roller press, a steady flow bin, a wind classification system, a power screening system, and a dry wind magnetic separation system, wherein the mine selection system further includes a support frame disposed on the base surface.
  • the support frame is divided into four layers from the base surface upward, and the first layer to the fourth layer are sequentially from the bottom layer to the top layer, and the roller press is disposed on the first layer of the support frame, and the steady flow chamber is disposed at a second layer of the support frame, the wind classification system is disposed on a third layer of the support frame, the power screening system is disposed on a fourth layer of the support frame, and the dry wind magnetic separation system It is disposed on the first, second and/or third layers of the support frame.
  • the invention creatively designs the mine selection system as a "building" type arrangement, which can save the floor space of the mining system and reduce the investment cost and construction cost of the civil engineering foundation; and is beneficial to the natural flow of materials. It saves the energy and materials consumed by the materials in the transportation process; in addition, it does not need water during the mining process, saves water resources, avoids the pollution of the wastewater to the environment, and can be applied to places where water resources are lacking.
  • the roller press is connected to the steady flow chamber, the steady flow chamber is connected to the wind classification system, the wind classification system is connected to the power screening system, the power screening system and the steady flow The silos are connected, and the power screening system is coupled to the dry wind magnetic separation system.
  • the dry wind magnetic separation system comprises a transition chamber and a dry magnetic separation unit, and the transition chamber is disposed on the third floor of the support frame. Said A dry wind magnetic separation unit is disposed on the first and/or second layers of the support frame. Improve the efficiency and stability of mining.
  • the transition chamber is connected to the power screening system, and the dry wind magnetic separation unit is connected to the transition chamber.
  • the magnetic separation system further comprises a hoist; the outlet of the hoist is connected to the wind classification system, the inlet of the hoist being connected to the roller press. Not only can the crushed coarse ore be easily sent to the wind classification system for sorting, but also the energy consumption is reduced, and the sorting efficiency is greatly improved.
  • the magnetic separation system also includes a dust collection system coupled to the power screening system.
  • the dust collection system is connected to the dry wind magnetic separation unit. The dust collecting system collects and treats the dust generated in the mine selection, thereby preventing the dust from being discharged into the air and polluting the environment.
  • connection between the above devices is connected by all possible means such as pipes, chutes, non-standard chutes, receiving troughs, feed chutes, receiving pipes or feeding pipes. Further reduce energy and equipment (such as belt) consumption, save costs, and avoid air pollution.
  • the dry wind magnetic separation system is composed of one set, two sets, three sets or more sets of dry wind magnetic separation units.
  • the dry wind magnetic separation unit is arranged on the first layer and/or the second layer of the support frame, and multiple sets of dry wind magnetic separation units can also be arranged in an upper and lower superimposed combination manner.
  • the first layer of the support frame It not only guarantees the taste of mineral processing, but also saves the floor space, and is more convenient for the flow of materials and saves energy.
  • the dry wind magnetic separation units are connected or combined by all possible means such as pipes, chutes, non-standards or superpositions, thereby saving energy consumption and facilitating material circulation.
  • the base surface of the support frame is the ground, and the ground is used as the first layer of the support frame. Reduce costs and facilitate material circulation.
  • the dust collection system is located above the ground. Facilitate the export and processing of dust.
  • the crushed coarse ore first enters a wind classification system located on the third layer of the support frame, and the wind classification system classifies the coarse ore to select a fine ore feed that meets the particle size requirement.
  • the power screening system located on the fourth layer of the support frame, the coarse ore that does not meet the particle size requirement is fed into the steady flow bin located in the second layer of the support frame, and then collected and controlled by the steady flow bin.
  • roller press located in the first layer of the support frame, the roller press performs roll crushing on the coarse ore, and the coarse ore after the roll crushing is again sent to the wind classification system for classification;
  • the dynamic screening system sifts the fine ore, selects the ultrafine ore that meets the particle size requirements and feeds it to the next process, and the fine ore that does not meet the particle size requirements is fed to the steady flow.
  • the bin is further sent to the roller press by the collection and control of the steady flow bin, the roller press performs roll crushing on the fine ore, and the coarse ore after the roll crushing is sent again into the
  • the wind turbine system is graded and the above steps are repeated; the ultrafine ore that meets the particle size requirements selected by the power screening system is fed into a dry wind magnetic separation system for magnetic separation.
  • the mineral selection system of the invention fully utilizes the space resources, greatly optimizes the overall structure of the system, not only smoother material flow, but also saves land occupation, and compares the production scale of 70 tons per hour, the prior art
  • the invention occupies an area of about 6,000 square meters, and the invention occupies only 1000-1200 square meters; and also reduces the transmission distance of materials between the devices.
  • the material has a transmission distance of at least 600 meters, and the present invention The material transmission distance is only 100 meters; the energy consumption is reduced, and the processing is the same according to the same processing amount.
  • the prior art requires 23 kWh/h, and the present invention only needs 14-15 kWh/h; the entire mining system is improved. Efficiency, while the entire system does not use water, saving equipment costs and water resources.
  • the mineral selection system of the present invention has a good magnetic separation effect.
  • the use of the mineral selection system of the present invention enables the selected magnetite grade to reach 63%-65%; on the other hand, the selected system of the mine selects
  • the particle size of the finished product can be adjusted according to the needs of the user. The adjustment range is wide, and the particle size of the finished product can be adjusted: -200 mesh accounts for 55-95%.
  • the mineral selection system of the present invention has high efficiency and high output. After the ore is treated by the ore sorting system of the present invention, the mineral particles are naturally dissociated and ground according to the crystal forming surface, and the metal mineral is completely dissociated; the microscopic particle shape of the product is flaky and needle-shaped, which is favorable for pellet formation and improved pellet efficiency. 30% is beneficial to improve the efficiency of magnetic separation; the output of grinding can be increased by 20-50%, and the efficiency is increased by 20-30%.
  • the comprehensive energy consumption of the mineral selection system of the invention is low, and the energy consumption of the mine selection system in the working process is lower than the ferrous metallurgical industry standard of the People's Republic of China - "The mining enterprise energy consumption quota standard Part 2: iron ore The primary standard for comprehensive energy consumption per unit ore dressing in the magnetic separation process and flotation process specified in YB/T4417.2-2014 is 30%.
  • the material circulation mode and dust collection system of the mine selection system greatly reduce the pollution caused by the environment during the mine selection process.
  • the dust content of the air discharge is less than 20mg/Nm3, which is better than the dust emission requirements stipulated by the national standard.
  • the material flow in the grinding, grading, screening and magnetic separation process of the system is smooth, and there is no material siltation and clogging, which not only ensures the quality of the product, but also improves the use efficiency and service life of the equipment and reduces the maintenance cost.
  • the mineral selection system of the invention reduces the investment cost, and the existing mineral selection system needs to establish a tailings dam to treat the waste water and waste generated after the magnetic separation, and the mine selection system only needs the dust collection system to produce the dried water. Dust Collecting and backfilling can solve the problem of waste.
  • the input cost of the existing technology on the tailings dam is about 10,000 yuan, and the maintenance cost in the later period is also very high, which requires about 10,000 yuan per year;
  • the invention does not need to build a tailings dam, and only needs to backfill the collected tail powder. Therefore, it only needs about 10,000 yuan in the treatment of the tailings, which can save expenditures of ⁇ and 10,000 yuan.
  • the fine powder selected by the mineral selection system of the invention is beneficial to pellet formation due to the microscopic particle shape of the fine powder, improves the pellet efficiency, reduces the operating cost of the pellet plant, and improves the efficiency of the pellet plant.
  • the invention reduces the operator's demand, and at the same time reduces the quality requirements of the personnel; it is beneficial for the inspection personnel to troubleshoot.
  • Figure 1 is a structural view of a prior art mine selection
  • FIG. 2 is a mine selection system 1 designed by a person of ordinary skill in the art according to the background art;
  • Figure 3 is a mine selection system 2 designed by a person of ordinary skill in the art according to the background art;
  • Figure 4 is a mine selection system 3 designed by a person of ordinary skill in the art according to the background art
  • Figure 5 is a structural view of Embodiment 2.
  • Figure 6 is a structural view of Embodiment 3.
  • Figure 7 is a structural view of Embodiment 4.
  • Fig. 8 is a configuration diagram of the fifth embodiment.
  • a mine selection system includes a roll press, a steady flow bin, a wind classification system, a power screening system, and a dry wind magnetic separation system
  • the mining system further including a support frame, the support frame Four layers, the roller press is disposed on a first layer of the support frame, the steady flow chamber is disposed on a second layer of the support frame, and the wind classification system is disposed on a third layer of the support frame
  • the power screening system is disposed on a fourth layer of the support frame, and the dry wind magnetic separation system is disposed on the first, second, and third layers of the support frame.
  • the crushed coarse ore first enters the wind classification system located on the third layer of the support frame, the wind classification system classifies the coarse ore, and selects the fine ore that meets the particle size requirement to be located.
  • the power screening system of the fourth layer of the support frame, the coarse ore that does not meet the particle size requirement is fed into the steady flow bin located in the second layer of the support frame, and then is collected and controlled by the steady flow bin.
  • the roller press performs roll crushing on the coarse ore, and the coarse ore after the roll crushing is fed again into the roller press
  • the grading system performs grading; the power sieving system sifts the fine ore, selects the ultrafine ore that meets the particle size requirement and feeds it into the next process, and the fine ore that does not meet the particle size requirement is fed to the site.
  • the steady flow bin is further sent to the roller press by the collection and control of the steady flow, the roller press grinds the fine ore, and the coarse ore after the roll crushing is sent again.
  • Dividing into the wind turbine system to repeat the above steps; and the ultrafine ore selected by the dynamic screening system to meet the particle size requirements is fed into the dry wind on the first, second and third floors of the support frame
  • the magnetic separation system performs magnetic separation.
  • the mine selection system is designed in the form of “building” type, which can save the floor space of the mining system to the greatest extent, and also reduce the investment cost and construction cost of the civil foundation; and it is beneficial to the natural flow of materials. It saves the energy and materials consumed by the materials during transportation; in addition, the mine selection system does not need water during magnetic separation, saves water resources, avoids environmental pollution of wastewater, and can use the mine selection system to lack The place of water resources.
  • a mine selection system includes a roller press, a steady flow bin, a wind classification system, a power screening system, and a dry wind magnetic separation system
  • the mining system further includes a support frame.
  • the support frame has a total of four layers
  • the roller press is disposed on the first layer of the support frame
  • the steady flow chamber is disposed on the second layer of the support frame
  • the wind classification system is disposed in the a third layer of the support frame
  • the power screening system is disposed on a fourth layer of the support frame
  • the dry wind magnetic separation system is disposed on the first, second and third layers of the support frame
  • the wind magnetic separation system comprises a transition chamber and a dry magnetic separation unit, the transition chamber is disposed on a third layer of the support frame, and the dry wind magnetic separation unit is disposed on the first and second sides of the support frame Floor.
  • the crushed coarse ore first enters the wind classification system located on the third layer of the support frame, the wind classification system classifies the coarse ore, and selects the fine ore that meets the particle size requirement to be located.
  • the power screening system of the fourth layer of the support frame, the coarse ore that does not meet the particle size requirement is fed into the steady flow bin located in the second layer of the support frame, and then is collected and controlled by the steady flow bin.
  • the roller press performs roll crushing on the coarse ore, and the coarse ore after the roll crushing is again sent to the wind classification system for classification;
  • the power screening system sifts the fine ore, selects the ultrafine ore that meets the particle size requirement and feeds it to the next process, and the fine ore that does not meet the particle size requirement is fed to the steady flow bin, and then passes through the The collection and control of the steady flow chamber is fed into the roller press, the roller press performs roll crushing on the fine ore, and the coarse ore after the roll crushing is again sent to the wind turbine system for classification.
  • the ultrafine ore is fed into a transition chamber located on the third layer of the support frame, and is collected and regulated by the transition chamber and fed into a dry wind magnetic separation system located in the second and first layers of the support frame. magnetic separation.
  • a mine selection system includes a roller press, a steady flow bin, and a wind classification system.
  • a power screening system and a dry wind magnetic separation system the mining system further comprising a support frame, the support frame has a total of four layers, and the roller press is disposed on the first layer of the support frame, a steady flow chamber is disposed on the second layer of the support frame, the wind classification system is disposed on the third layer of the support frame, and the power screening system is disposed on the fourth layer of the support frame, the dry a wind magnetic separation system is disposed on the first, second and third layers of the support frame; the dry wind magnetic separation system comprises a transition chamber and a dry magnetic separation unit, and the transition chamber is disposed on the support frame In three layers, the dry wind magnetic separation unit is disposed on the first and second layers of the support frame.
  • the roller press is connected to the steady flow chamber, the steady flow chamber is connected to the wind classification system, the wind classification system is connected to the power screening system, the power screening system and the dry a pneumatic magnetic separation system is connected, the power screening system is connected to the steady flow chamber; the transition chamber is connected to the power screening system, and the dry wind magnetic separation unit is connected to the transition chamber;
  • the mining system further includes a hoist; the outlet of the hoist is coupled to the wind classification system, the inlet of the hoist being coupled to the roller press.
  • each device is connected by pipeline or non-standard.
  • the crushed coarse ore is first lifted by a hoist, and then lifted and transported by pipeline or non-standard to a wind grading system located on the third layer of the support frame, the wind grading system for coarse ore Grading, selecting the fine ore that meets the particle size requirement and feeding it into the power screening system located on the fourth layer of the support frame through the pipeline, and the coarse ore that does not meet the particle size requirement is located in the support frame through the pipeline or non-standard feed.
  • the steady flow bin of the second layer is fed into the roller press located in the first layer of the support frame through the pipeline or non-standard through the collection and control of the steady flow bin, and the roller press rolls the coarse ore Press-grinding, the coarse ore after rolling and grinding is fed into the wind classification system through pipeline or non-standard for classification; the dynamic screening system screens the fine ore and selects the particle size requirement.
  • the ultrafine ore is sent to the next process, and the fine ore which does not meet the particle size requirement is fed into the steady flow bin through pipeline or non-standard, and then fed to the roller press through the collection and control of the steady flow bin.
  • the roller press grinds the fine ore Rolling the ground coarse ore into the hoist inlet, the hoist again sends the coarse ore into the wind classification system for grading, repeating the above steps; and the granules selected by the dynamic screening system
  • the ultrafine ore required by the diameter is fed into the transitional compartment of the third layer of the support frame through pipelines or non-standards, and is collected and adjusted through the transitional compartment and then fed through the pipeline or non-standard feed in the support frame second and
  • the first layer of dry wind magnetic separation system is magnetically selected.
  • the embodiment has a small footprint and is calculated according to the production scale of 70 tons per hour.
  • the prior art covers an area of about 6,000 square meters, and the invention covers only 1000 square meters and reduces the land occupation by 83%.
  • the transmission distance of the materials between the devices is reduced.
  • the material transmission distance is at least 600 meters, and the transmission distance of the material of the invention is only 100 meters, and the transmission distance is reduced by 83%;
  • the processing volume is the same for comparison.
  • the prior art requires 23 kWh of electricity, while the present invention requires only 14 kWh of electricity, saving 39% of electricity; the magnetite grade is 63%; on the other hand, the finished product selected by the ore selection system can be According to the needs of users, the adjustment range is wide, and the finished product granularity can be adjusted: -200 mesh accounts for 55-95%.
  • This embodiment has high efficiency and high output.
  • the material transportation path is short, and the efficiency is increased by more than 50% compared with the belt conveyor; the self-running fluidity of the material is fully utilized, and the residence time of the material in the intermediate link is shortened, thereby further improving the production efficiency;
  • the ore sorting system processes the coarse ore and performs crushing and grinding in the form of a bed.
  • the mineral particles are naturally dissociated and ground according to the crystal forming surface, even if the mineral particles which are not completely dissociated have many microcracks inside. It is easier to grind again, so the throughput can be increased, and the production capacity can reach 80 to 90 tons based on the production scale of 70 tons per hour.
  • the equipment has a long service life and can reach more than 15,000 hours.
  • a mine selection system includes a roller press, a steady flow bin, a wind classification system, a power screening system, and a dry wind magnetic separation system
  • the mine selection system further includes a support. a total of four layers of the support frame, the roller press is disposed on the first layer of the support frame, the steady flow chamber is disposed on the second layer of the support frame, and the wind classification system is disposed at the shelf a third layer of the support frame, the power screening system is disposed on a fourth layer of the support frame, and the dry wind magnetic separation system is disposed on the first, second and third layers of the support frame;
  • the dry wind magnetic separation system includes a transition chamber and a dry magnetic separation unit, the transition chamber is disposed on a third layer of the support frame, and the dry wind magnetic separation unit is disposed on the first and the first of the support frame Second floor.
  • the roller press is connected to the steady flow chamber, the steady flow chamber is connected to the wind classification system, the wind classification system is connected to the power screening system, the power screening system and the dry a pneumatic magnetic separation system is connected, the power screening system is connected to the steady flow chamber; the transition chamber is connected to the power screening system, and the dry wind magnetic separation unit is connected to the transition chamber;
  • the mining system further includes a hoist; the outlet of the hoist is connected to the wind grading system, the inlet of the hoist is connected to the roller press, and the outlet of the hoist passes through a pipe or a non-standard shovel and The wind classification system is connected, and the inlet of the elevator is connected to the roller press by a pipe or a non-standard slider.
  • the mine selection system further includes a dust collection system, the dust collection system is connected to the power screening system and the dry wind magnetic separation unit through a pipeline or a non-standard slip, and the position of the dust collection system Higher than the first layer of the support frame.
  • the crushed coarse ore is first upgraded by a hoist, and after lifting, it is transported by pipeline or non-standard into a wind classification system located on the third layer of the support frame, and the wind classification system classifies the coarse ore. Selecting the fine ore that meets the particle size requirement and feeding it into the power screening system located on the fourth layer of the support frame, and the coarse ore that does not meet the particle size requirement is fed into the steady flow bin of the second layer of the support frame, and then passes through The collection and control of the steady flow chamber is fed into a roller press located in the first layer of the support frame, and the roller press rolls the coarse ore Press-grinding, the crushed coarse ore is sent to the wind classification system for classification; the dynamic screening system sifts the fine ore to select the ultrafine ore that meets the particle size requirement.
  • the fine ore that does not meet the particle size requirement is fed into the steady flow bin, and then sent to the roller press through the collection and control of the steady flow bin, the roller press to the fine ore Rolling and grinding, the coarse crushed ore after grinding is fed to the inlet of the hoist, the hoist again sends the coarse ore into the wind classification system for classification, repeating the above steps; and after dynamic screening
  • the superfine ore selected by the system and conforming to the particle size requirement is fed into a transitional compartment located on the third layer of the support frame, and is collected and adjusted through the transitional compartment and then fed into the second and first layers of the support frame.
  • the dry wind magnetic separation system performs magnetic separation.
  • the embodiment has a small footprint and is calculated on a production scale of 70 tons per hour.
  • the prior art occupies an area of about 6,000 square meters, and the invention occupies only 1200 square meters, reducing the land occupation by 80%; The transmission distance of the materials between the devices is reduced.
  • the material transmission distance is at least 600 meters, and the transmission distance of the material of the invention is only 100 meters, and the transmission distance is reduced by 83%;
  • the prior art requires 23 kWh of electricity, while the present invention requires only 15 kWh of electricity, saving 35%; the magnetite grade is 64%;
  • the finished product selected by the ore selection system can be According to the needs of users, the adjustment range is wide, and the finished product granularity can be adjusted: -200 mesh accounts for 55-95%.
  • This embodiment has high efficiency and high output.
  • the material transportation path is short, and the efficiency is increased by more than 50% compared with the belt conveyor; the self-running fluidity of the material is fully utilized, and the residence time of the material in the intermediate link is shortened, thereby further improving the production efficiency;
  • the ore sorting system processes the coarse ore and performs crushing and grinding in the form of a bed.
  • the mineral particles are naturally dissociated and ground according to the crystal forming surface, even if the mineral particles which are not completely dissociated have many microcracks inside. It is easier to grind again, so the throughput can be increased, and the production capacity can reach 80 to 90 tons based on the production scale of 70 tons per hour.
  • the dust content of air emission is less than 20mg/Nm3, which is better than the environmental requirements of dust emission requirements of national standards and not more than 30mg/Nm3, and no air pollution.
  • the equipment has a long service life and can reach more than 15,000 hours.
  • a mine selection system includes a roller press, a steady flow bin, a wind classification system, a power screening system, and a dry wind magnetic separation system
  • the mining system further includes a support frame.
  • the support frame has a total of four layers
  • the roller press is disposed on the first layer of the support frame
  • the steady flow chamber is disposed on the second layer of the support frame
  • the wind classification system is disposed in the a third layer of the support frame
  • the power screening system is disposed on a fourth layer of the support frame
  • the dry wind magnetic separation system is disposed on the first, second and third layers of the support frame
  • the wind magnetic separation system includes a transition chamber and a dry magnetic separation unit, and the transition chamber is disposed in the A third layer of the support frame, the dry wind magnetic separation unit being disposed on the first layer or the second layer of the support frame.
  • the roller press is connected to the steady flow chamber, the steady flow chamber is connected to the wind classification system, the wind classification system is connected to the power screening system, the power screening system and the dry a pneumatic magnetic separation system is connected, the power screening system is connected to the steady flow chamber; the transition chamber is connected to the power screening system, and the dry wind magnetic separation unit is connected to the transition chamber;
  • the mining system further includes a hoist; the outlet of the hoist is connected to the wind grading system, the inlet of the hoist is connected to the roller press, and the outlet of the hoist passes through a pipe or a non-standard shovel and The wind classification system is connected, and the inlet of the elevator is connected to the roller press by a pipe or a non-standard slider.
  • the mine selection system further includes a dust collection system, the dust collection system is connected to the power screening system and the dry wind magnetic separation unit through a pipeline or a non-standard slip, and the position of the dust collection system Higher than the first layer of the support frame.
  • the dry wind magnetic separation system is composed of a plurality of sets of dry wind magnetic separation units, and the plurality of sets of dry wind magnetic separation units are connected by superimposed combination and disposed on the support frame.
  • the first layer of the support frame is the ground.
  • the crushed coarse ore is first upgraded by a hoist, and then lifted and transported through a pipeline or a non-standard slip into a wind classification system located on the third layer of the support frame, the wind classification system performs the coarse ore. Grading, selecting the fine ore that meets the particle size requirement and feeding it into the power screening system located on the fourth layer of the support frame, and the coarse ore that does not meet the particle size requirement is fed into the steady flow bin located on the second layer of the support frame.
  • the roller press grinds the coarse ore, and crushes the coarse ore after grinding And being sent to the wind classification system for classification; the power screening system screens the fine ore, and selects the ultrafine ore that meets the particle size requirement and sends it to the next process, and does not meet the fineness requirement of the particle size. Feeding into the steady flow bin, and then feeding into the roller press through the collection and control of the steady flow bin, the roller press grinds the fine ore, and grinds the roller after crushing The coarse ore is fed to the hoist inlet again, and the hoist feeds the coarse mine again.
  • the embodiment has a small footprint and is calculated on a production scale of 70 tons per hour.
  • the prior art occupies an area of about 6,000 square meters, and the invention occupies only 1200 square meters, reducing the land occupation by 80%;
  • the transmission distance of the materials between the devices is reduced.
  • the material transmission distance is at least 600 meters, and the transmission distance of the material of the invention is only 100 meters, and the transmission distance is reduced by 83%;
  • the processing volume is the same for comparison.
  • the prior art requires 23 kWh of electricity, while the present invention requires only 15 kWh of electricity, saving 35% of electricity; the magnetite grade is 65%; on the other hand, the finished product selected by the ore selection system can have a particle size of According to the needs of users, the adjustment range is wide, and the finished product granularity can be adjusted: -200 mesh accounts for 55-95%.
  • This embodiment has high efficiency and high output.
  • the material transportation path is short, and the efficiency is increased by more than 50% compared with the belt conveyor; the self-running fluidity of the material is fully utilized, and the residence time of the material in the intermediate link is shortened, thereby further improving the production efficiency;
  • the ore sorting system processes the coarse ore and performs crushing and grinding in the form of a bed.
  • the mineral particles are naturally dissociated and ground according to the crystal forming surface, even if the mineral particles which are not completely dissociated have many microcracks inside. It is easier to grind again, so the throughput can be increased, and the production capacity can reach 80 to 90 tons based on the production scale of 70 tons per hour.
  • the dust content of air emission is less than 20mg/Nm3, which is better than the environmental requirements of dust emission requirements of national standards and not more than 30mg/Nm3, and no air pollution.
  • the equipment has a long service life and can reach more than 15,000 hours.

Abstract

一种矿选系统,包括辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统,所述矿选系统还包括设置于基面的支撑架,所述支撑架从基面向上分为四层,从底层到顶层依次为第一层到第四层,所述辊压机设置在所述支撑架的第一层,所述稳流仓设置在所述支撑架的第二层,所述风力分级系统设置在所述支撑架的第三层,所述动力筛分系统设置在所述支撑架的第四层,所述干式风磁选系统设置在所述支撑架的第一、二和/或三层。将上述矿选系统设计为"楼房"式的布置形式,能够最大程度地节省所述矿选系统的占地面积以及减少土建基础的投资成本和建设费用。

Description

一种矿选系统 技术领域:
本发明涉及一种矿选系统,尤其涉及一种用于黑色金属和有色金属的矿选系统。
背景技术:
目前成熟的磁铁矿选铁技术是干式破碎+湿式磨矿+湿式选矿(如附图1所示),占地面积非常大,设备的土建基础也非常复杂,建设难度大;现有的矿选技术需要大量用水进行磨矿以及湿式磁选,所以水消耗量大,同时尾排水造成水污染。
中国专利CN102489373B中公开了一种铁矿石加工选矿工艺,大致为以下步骤:1、将原矿破碎成粒度<30mm的粗矿,粗矿由第一皮带输送机送入提升机中;2、提升机将矿石提升到高出的第二皮带输送机上,由第二皮带输送机喂入无动力风选机中进行风选,粒度>1.5mm的粗矿通过稳流仓进入辊压机辊压后形成的料饼与从第一皮带输送机送入的粗矿混合后再次提升由第二皮带输送机喂入无动力风选机中进行无动力风选;3、粒度≤1.5mm的细矿粉送入动力风选机中进行风选,选出粒度<0.2mm的超细粉直接进入旋风收尘器,未选走的粗料送入磁性选粉机中选出精铁粉,脉石矿物作为尾矿排出;4、旋风收尘器将粒度<0.04的微分选出,未选走的细料送入磁性选粉机选出精铁粉,脉石矿物作为尾矿排出,微粉进入袋收尘器或电收尘器中进行收集;5、收集的部分送入磁性选粉机选出精铁粉,脉石矿物作为尾矿排出。本领域普通技术人员根据此上述专利文献设计出了如图2、图3和图4等所示的磨矿系统。但是,根据该专利文献做出的生产系统中仍普遍存在以下问题:
1.占地面积大,按小时处理量70吨的生产规模计算,需占地5000平方米;
2.物料的输送受皮带机的爬升角的限制,若要实现将物料输送到一下台磁选机的入料口,则皮带机的最短长度应不小于L(计算公式:L=h/tan(α),其中:h为磁选机入料口的最低高度,α为皮带机的最大倾斜角);同时当磁选机的数量越多,所需要的皮带机就越多,皮带机的安装地盘就越大,皮带的耗费就越大。
3.按小时处理量70吨的生产线计算,附图2、附图3、附图4三种方案所需皮带机的数量分别是至少11台、9台、17台,皮带的耗费按处理80万吨总量计 算,则分别需要30套、32套、28套皮带。而在使用中,一般工作情况下皮带的使用寿命约6~12个月,所以每6~12个月就要整体更换一次皮带,耗费了巨大的成本。按小时处理量70吨的生产规模计算,每小时会耗费23度电,能耗巨大。
4.选出的磁铁矿品位低,产量低。按现有技术的干式磁选机考虑,当入选物料中铁的品位为10%~15%,经一次磁选选出的精粉品位在30%左右;当入选物料中铁的品位为25%~30%,经一次磁选选出的精粉品位在40%左右;产量在40吨左右;另一方面,当一次磁选选出的精粉品位低时,本领域普通技术人员会想到增加磁选机数量来提高品位,虽然增加磁选次数可提高精粉的品位,但现有技术的干式磁选机经多次磁选选出的精粉品位最好的记录是45~50%,小于国家标准规定的销售品位:铁精粉≥58%(现有技术的湿式磁选机能达到60%以上的品位);如果考虑增加磁选机数量,则需同时增加喂料输送皮带机,磁选机和皮带机的增加,都将增加占地面积,同时还会增加能耗和皮带的耗费。
5.对环境污染严重,冒灰现象造成空气污染。
发明内容:
本发明的目的在于提供一种用于黑色金属和有色金属的矿选系统。
为了实现上述目的,本发明是这样实现的:
一种矿选系统,包括辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统,其特征在于:所述矿选系统还包括设置于基面的支撑架,所述支撑架从基面向上方分为四层,从底层到顶层依次为第一层到第四层,所述辊压机设置在所述支撑架的第一层,所述稳流仓设置在所述支撑架的第二层,所述风力分级系统设置在所述支撑架的第三层,所述动力筛分系统设置在所述支撑架的第四层,所述干式风磁选系统设置在所述支撑架的第一、二和/或三层。本发明具创造性的将矿选系统设计为“楼房”式的布置,能够最大程度地节省所述矿选系统的占地面积以及减少土建基础的投资成本和建设费用;而且利于物料的自然流动,节省了物料在运输过程中所耗费的能量和材料;另外,在矿选过程中无需用水,节省了水资源,避免了废水对环境的污染,能够应用到缺乏水资源的地方。
上述辊压机和所述稳流仓相连,所述稳流仓和所述风力分级系统相连,所述风力分级系统和所述动力筛分系统相连,所述动力筛分系统和所述稳流仓相连,所述动力筛分系统和所述干式风磁选系统相连。
为了进一步使得所述干式风磁选系统能够稳定连续地运转,所述干式风磁选系统包括过渡仓和干式磁选机组,所述过渡仓设置在所述支撑架的第三层,所述 干式风磁选机组设置在所述支撑架的第一和/或第二层。提高了矿选的效率和稳定性。优选地,所述过渡仓和所述动力筛分系统相连,所述干式风磁选机组和所述过渡仓相连。
为了进一步减少能耗,所述磁选系统还包括提升机;所述提升机的出口和所述风力分级系统相连,所述提升机的入口和所述辊压机相连。不仅能够轻易地将破碎后的粗矿送入所述风力分级系统中进行分选,而且减少能耗,并大大提高分选效率。
为了进一步避免空气污染,所述磁选系统还包括收尘系统,所述收尘系统与所述动力筛分系统相连。为了进一步避免空气污染,所述收尘系统和所述干式风磁选机组相连。所述收尘系统对在矿选中产生的粉尘进行收集处理,避免了粉尘排入空气中对环境造成污染。
上述装置之间的相连是通过管道、溜槽、非标溜子、收料槽、喂料槽、收料管或喂料管等所有可能的方式相连。进一步减少能量和设备(如皮带)的消耗,节省成本,并避免空气污染。
为了进一步提高选出的磁铁矿的品位,所述干式风磁选系统由一套、两套、三套或更多套干式风磁选机组构成。为了进一步节省占地面积,所述干式风磁选机组设置在所述支撑架的第一层和/或第二层,也可将多套干式风磁选机组采用上下叠加组合方式设置在所述支撑架的第一层。不仅保证了选矿品味,而且节省占地面积,还更方便物料的流动,节省能耗。优选地,干式风磁选机组之间通过管道、溜槽、非标或叠加等所有可能的方式连接或组合,既能节省能耗还能方便物料流通。
为了进一步降低成本,所述支撑架的基面为地面,以地面作为支撑架的第一层。降低了成本,并有利于物料流通。
优选地,所述收尘系统位置高于地面。便于粉尘的导出和处理。
本发明的矿选过程中,经过破碎的粗矿首先进入位于所述支撑架第三层的风力分级系统,所述风力分级系统对粗矿进行分级,选出符合粒径要求的细矿送入位于所述支撑架第四层的动力筛分系统,不符合粒径要求的粗矿喂入位于所述支撑架第二层的稳流仓,再通过所述稳流仓的收集及控制送入位于所述支撑架第一层的辊压机中,所述辊压机对粗矿进行辊压磨碎,将辊压磨碎后的粗矿再次送入所述风力分级系统中进行分级;所述动力筛分系统对细矿进行筛分,选出符合粒径要求的超细矿送入下一道工序,而不符合粒径要求的细矿被喂入到所述稳流 仓,再通过所述稳流仓的收集及控制送入所述辊压机中,所述辊压机对细矿进行辊压磨碎,将辊压磨碎后的粗矿再次送入所述风力风机系统中进行分级,重复上述步骤;而经过动力筛分系统筛选出来的符合粒径要求的超细矿被喂入位于干式风磁选系统进行磁选。
有益效果:
1.本发明的矿选系统充分利用空间资源,极大的优化了系统的整体构造,不仅物料流动更加顺畅,而且节省了占地,按小时处理量70吨的生产规模进行比较,现有技术占地约6000平方米,而本发明占地只需1000-1200平方米;同时也减少了各个装置间物料的传输距离,现有技术中物料的传输距离至少是在600米以上,而本发明物料的传输距离只有100米;减少了能耗,按处理量相同进行比较,现有技术需要23度电/h,而本发明只需14-15度电/h;提高了整个矿选系统的效率,同时整个系统不用水,节约了设备成本和水资源。
2.本发明的矿选系统磁选效果好,一方面,使用本发明的矿选系统能够使选出的磁铁矿品位达到63%-65%;另一方面,本矿选系统选出的成品粒度可根据用户需要进行调节,调节范围宽,成品粒度可调节范围:-200目占55~95%。
3.本发明的矿选系统效率高、产量高。矿石经本发明矿选系统处理后,矿物颗粒按结晶体形成面自然解离磨碎,金属矿物解离完全;产品的微观颗粒形状偏片状和针状,有利于球团成形,提高球团效率30%,有益于提高磁选效率;磨矿的产量可提高20~50%、效率提高20~30%。
4.本发明的矿选系统综合能耗低,本矿选系统在工作过程中的能耗低于中华人民共和国黑色冶金行业标准——《矿山企业采矿生产能耗定额标准第2部分:铁矿石选矿YB/T4417.2-2014》中规定的磁选流程、浮选流程的单位原矿选矿综合能耗的一级标准30%。
5.本矿选系统的物料流通方式和收尘系统,极大的减少了矿选过程中对环境造成的污染,空气排放的粉尘含量小于20mg/Nm3,优于国家标准规定的粉尘排放要求不大于30mg/Nm3的环保要求,无大气污染。
6.本系统磨矿、分级、筛分和磁选过程物料流动顺畅,不会出现物料淤积堵塞现象,不仅保证了产品的品质,同时提高设备的使用效率和使用寿命,降低维修成本。
7.本发明的矿选系统降低了投资成本,现有的矿选系统需要建立尾矿坝来处理磁选后产生的废水和废料,而本矿选系统只需收尘系统将其产生的干式粉尘进 行收集并回填就能解决废料的问题。按日处理量1700吨的生产规模进行比较,现有技术在尾矿坝上的投入成本约陆仟万元,而后期的维护成本也非常高,每年需要约贰仟伍佰万元的费用;而本发明不需要建尾矿坝,只需将收集的尾粉进行回填,因此在尾矿的处理上只需要约壹佰万元即可,可节约支出柒、捌仟万元。
8.本发明的矿选系统选出的精粉,由于精粉的微观颗粒形状有益于球团成形,提高球团效率,降低球团厂的运营成本,提高球团厂的效益。
9.本发明减少操作人员需求,同时对人员的素质要求也降低了;有利于巡检人员排除故障。
附图说明:
图1是现有技术的矿选的结构图;
图2是本领域普通技术人员根据背景技术设计的矿选系统1;
图3是本领域普通技术人员根据背景技术设计的矿选系统2;
图4是本领域普通技术人员根据背景技术设计的矿选系统3;
图5是实施例2的结构图;
图6是实施例3的结构图;
图7是实施例4的结构图;
图8是实施例5的结构图。
具体实施方式:
下面将通过附图中所示的实施例来介绍本发明,但本发明并不局限于所介绍的实施方式,任何在本实施例基本精神上的改进或替代,仍属于本发明权利要求所要求保护的范围:
实施例1:一种矿选系统,包括辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统,所述矿选系统还包括支撑架,所述支撑架共四层,所述辊压机设置在所述支撑架的第一层,所述稳流仓设置在所述支撑架的第二层,所述风力分级系统设置在所述支撑架的第三层,所述动力筛分系统设置在所述支撑架的第四层,所述干式风磁选系统设置在所述支撑架的第一、二和三层。
在矿选的过程中,经过破碎的粗矿首先进入位于所述支撑架第三层的风力分级系统,所述风力分级系统对粗矿进行分级,选出符合粒径要求的细矿送入位于所述支撑架第四层的动力筛分系统,不符合粒径要求的粗矿喂入位于所述支撑架第二层的稳流仓,再通过所述稳流仓的收集及控制送入位于所述支撑架第一层的辊压机中,所述辊压机对粗矿进行辊压磨碎,将辊压磨碎后的粗矿再次送入所述 风力分级系统中进行分级;所述动力筛分系统对细矿进行筛分,选出符合粒径要求的超细矿送入下一道工序,而不符合粒径要求的细矿被喂入到所述稳流仓,再通过所述稳流从的收集及控制送入所述辊压机中,所述辊压机对细矿进行辊压磨碎,将辊压磨碎后的粗矿再次送入所述风力风机系统中进行分级,重复上述步骤;而经过动力筛分系统筛选出来的符合粒径要求的超细矿被喂入位于所述支撑架第一、二和三层的干式风磁选系统进行磁选。
将该矿选系统设计成“楼房”式的布置形式,能够最大程度地节省所述矿选系统的占地面积,同时也减少了土建基础的投资成本和建设费用;而且利于物料的自然流动,节省了物料在运输过程中所耗费的能量和材料;另外,该矿选系统在磁选时无需用水,节省了水资源,避免了废水对环境的污染,能够将所述矿选系统用到缺乏水资源的地方。
实施例2:如图5所示,一种矿选系统,包括辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统,所述矿先系统还包括支撑架,所述支撑架共四层,所述辊压机设置在所述支撑架的第一层,所述稳流仓设置在所述支撑架的第二层,所述风力分级系统设置在所述支撑架的第三层,所述动力筛分系统设置在所述支撑架的第四层,所述干式风磁选系统设置在所述支撑架的第一、二和三层;所述干式风磁选系统包括过渡仓和干式磁选机组,所述过渡仓设置在所述支撑架的第三层,所述干式风磁选机组设置在所述支撑架的第一和第二层。
在矿选的过程中,经过破碎的粗矿首先进入位于所述支撑架第三层的风力分级系统,所述风力分级系统对粗矿进行分级,选出符合粒径要求的细矿送入位于所述支撑架第四层的动力筛分系统,不符合粒径要求的粗矿喂入位于所述支撑架第二层的稳流仓,再通过所述稳流仓的收集及控制送入位于所述支撑架第一层的辊压机中,所述辊压机对粗矿进行辊压磨碎,将辊压磨碎后的粗矿再次送入所述风力分级系统中进行分级;所述动力筛分系统对细矿进行筛分,选出符合粒径要求的超细矿送入下一道工序,而不符合粒径要求的细矿被喂入到所述稳流仓,再通过所述稳流仓的收集及控制送入所述辊压机中,所述辊压机对细矿进行辊压磨碎,将辊压磨碎后的粗矿再次送入所述风力风机系统中进行分级,重复上述步骤;而经过动力筛分系统筛选出来的符合粒径要求的超细矿被喂入位于所述支撑架第三层的过渡仓,经过所述过渡仓的收集和调控再喂入位于所述支撑架第二和第一层的干式风磁选系统进行磁选。
实施例3:如图6所示,一种矿选系统,包括辊压机、稳流仓、风力分级系 统、动力筛分系统和干式风磁选系统,所述矿选系统还包括支撑架,所述支撑架共四层,所述辊压机设置在所述支撑架的第一层,所述稳流仓设置在所述支撑架的第二层,所述风力分级系统设置在所述支撑架的第三层,所述动力筛分系统设置在所述支撑架的第四层,所述干式风磁选系统设置在所述支撑架的第一、二和三层;所述干式风磁选系统包括过渡仓和干式磁选机组,所述过渡仓设置在所述支撑架的第三层,所述干式风磁选机组设置在所述支撑架的第一和第二层。
所述辊压机和所述稳流仓相连,所述稳流仓和所述风力分级系统相连,所述风力分级系统和所述动力筛分系统相连,所述动力筛分系统和所述干式风磁选系统相连,所述动力筛分系统和所述稳流仓相连;所述过渡仓和所述动力筛分系统相连,所述干式风磁选机组和所述过渡仓相连;所述矿选系统还包括提升机;所述提升机的出口和所述风力分级系统相连,所述提升机的入口和所述辊压机相连。本实施例用管道或非标连接各设备。
在矿选的过程中,经过破碎的粗矿首先经过提升机提升,提升后通过管道或非标等方式运输进入位于所述支撑架第三层的风力分级系统,所述风力分级系统对粗矿进行分级,选出符合粒径要求的细矿通过管道送入位于所述支撑架第四层的动力筛分系统,不符合粒径要求的粗矿通过管道或非标喂入位于所述支撑架第二层的稳流仓,再通过所述稳流仓的收集及控制经由管道或非标送入位于所述支撑架第一层的辊压机中,所述辊压机对粗矿进行辊压磨碎,将辊压磨碎后的粗矿经由管道或非标再次送入所述风力分级系统中进行分级;所述动力筛分系统对细矿进行筛分,选出符合粒径要求的超细矿送入下一道工序,而不符合粒径要求的细矿通过管道或非标喂入到所述稳流仓,再通过所述稳流仓的收集及控制送入所述辊压机中,所述辊压机对细矿进行辊压磨碎,将辊压磨碎后的粗矿再次送入提升机入口,所述提升机将粗矿再次送入所述风力分级系统中进行分级,重复上述步骤;而经过动力筛分系统筛选出来的符合粒径要求的超细矿通过管道或非标喂入位于所述支撑架第三层的过渡仓,经过所述过渡仓的收集和调节再通过管道或非标喂入位于所述支撑架第二和第一层的干式风磁选系统进行磁选。
本实施例实施效果:
1.本实施例占地面积少,按小时处理量70吨的生产规模计算,现有技术占地约6000平方米,而本发明占地只需1000平方米,减少占地83%;同时也减少了各个装置间物料的传输距离,现有技术中物料的传输距离至少是在600米以上,而本发明物料的传输距离只有100米,减少传输距离83%;同时也减少了能耗,按 处理量相同进行比较,现有技术需要23度电,而本发明只需14度电,节电39%;磁铁矿品位达到63%;另一方面,本矿选系统选出的成品粒度可根据用户需要进行调节,调节范围宽,成品粒度可调节范围:-200目占55~95%。
2.本实施例效率高、产量高。物料运输路径短,与皮带机相比,效率提高了50%以上;充分利用了物料的自游流动性,缩短了物料在中间环节的停留时间,从而再次提高了生产效率;采用本实施例的矿选系统处理粗矿,以料床形式进行挤压破碎粉磨,矿物颗粒是按结晶体形成面自然解离磨碎的,即使那些未完全解离的矿物颗粒在其内部也存在许多微裂纹,为再次的磨碎更加容易,因此可提高处理量,按小时处理量70吨的生产规模计算,产量可达80~90吨。
3.设备的使用寿命长,可达到15000小时以上。
实施例4:如图7所示,一种矿选系统,包括辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统,所述矿选系统统还包括支撑架,所述支撑架共四层,所述辊压机设置在所述支撑架的第一层,所述稳流仓设置在所述支撑架的第二层,所述风力分级系统设置在所述支撑架的第三层,所述动力筛分系统设置在所述支撑架的第四层,所述干式风磁选系统设置在所述支撑架的第一、二和三层;所述干式风磁选系统包括过渡仓和干式磁选机组,所述过渡仓设置在所述支撑架的第三层,所述干式风磁选机组设置在所述支撑架的第一和第二层。
所述辊压机和所述稳流仓相连,所述稳流仓和所述风力分级系统相连,所述风力分级系统和所述动力筛分系统相连,所述动力筛分系统和所述干式风磁选系统相连,所述动力筛分系统和所述稳流仓相连;所述过渡仓和所述动力筛分系统相连,所述干式风磁选机组和所述过渡仓相连;所述矿选系统还包括提升机;所述提升机的出口和所述风力分级系统相连,所述提升机的入口和所述辊压机相连,所述提升机的出口通过管道或非标溜子和所述风力分级系统相连,所述提升机的入口通过管道或非标溜子和所述辊压机相连。另外,所述矿选系统还包括收尘系统,所述收尘系统与所述动力筛分系统和所述干式风磁选机组通过管道或非标溜子相连,且所述收尘系统的位置高于所述支撑架的第一层。
在矿选的过程中,经过破碎的粗矿首先经过提升机提升,提升后通过管道或非标运输进入位于所述支撑架第三层的风力分级系统,所述风力分级系统对粗矿进行分级,选出符合粒径要求的细矿送入位于所述支撑架第四层的动力筛分系统,不符合粒径要求的粗矿喂入所述支撑架第二层的稳流仓,再通过所述稳流仓的收集及控制送入位于所述支撑架第一层的辊压机中,所述辊压机对粗矿进行辊 压磨碎,将辊压磨碎后的粗矿再次送入所述风力分级系统中进行分级;所述动力筛分系统对细矿进行筛分,选出符合粒径要求的超细矿送入下一道工序,而不符合粒径要求的细矿喂入到所述稳流仓,再通过所述稳流仓的收集及控制送入所述辊压机中,所述辊压机对细矿进行辊压磨碎,将辊压磨碎后的粗矿再次送入提升机入口,所述提升机将粗矿再次送入所述风力分级系统中进行分级,重复上述步骤;而经过动力筛分系统筛选出来的符合粒径要求的超细矿喂入位于所述支撑架第三层的过渡仓,经过所述过渡仓的收集和调节再喂入位于所述支撑架第二和第一层的干式风磁选系统进行磁选。
本实施例实施效果:
1.本实施例占地面积少,按小时处理量70吨的生产规模计算,现有技术占地约6000平方米,而本发明占地只需1200平方米,减少占地80%;同时也减少了各个装置间物料的传输距离,现有技术中物料的传输距离至少是在600米以上,而本发明物料的传输距离只有100米,减少传输距离83%;同时也减少了能耗,按处理量相同进行比较,现有技术需要23度电,而本发明只需15度电,节电35%;磁铁矿品位达到64%;另一方面,本矿选系统选出的成品粒度可根据用户需要进行调节,调节范围宽,成品粒度可调节范围:-200目占55~95%。
2.本实施例效率高、产量高。物料运输路径短,与皮带机相比,效率提高了50%以上;充分利用了物料的自游流动性,缩短了物料在中间环节的停留时间,从而再次提高了生产效率;采用本实施例的矿选系统处理粗矿,以料床形式进行挤压破碎粉磨,矿物颗粒是按结晶体形成面自然解离磨碎的,即使那些未完全解离的矿物颗粒在其内部也存在许多微裂纹,为再次的磨碎更加容易,因此可提高处理量,按小时处理量70吨的生产规模计算,产量可达80~90吨。
3.空气排放的粉尘含量小于20mg/Nm3,优于国家标准规定的粉尘排放要求不大于30mg/Nm3的环保要求,无大气污染。
4.设备的使用寿命长,可达到15000小时以上。
实施例5:如图8所示,一种矿选系统,包括辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统,所述矿选系统还包括支撑架,所述支撑架共四层,所述辊压机设置在所述支撑架的第一层,所述稳流仓设置在所述支撑架的第二层,所述风力分级系统设置在所述支撑架的第三层,所述动力筛分系统设置在所述支撑架的第四层,所述干式风磁选系统设置在所述支撑架的第一、二和三层;所述干式风磁选系统包括过渡仓和干式磁选机组,所述过渡仓设置在所述 支撑架的第三层,所述干式风磁选机组设置在所述支撑架的第一层或第二层。
所述辊压机和所述稳流仓相连,所述稳流仓和所述风力分级系统相连,所述风力分级系统和所述动力筛分系统相连,所述动力筛分系统和所述干式风磁选系统相连,所述动力筛分系统和所述稳流仓相连;所述过渡仓和所述动力筛分系统相连,所述干式风磁选机组和所述过渡仓相连;所述矿选系统还包括提升机;所述提升机的出口和所述风力分级系统相连,所述提升机的入口和所述辊压机相连,所述提升机的出口通过管道或非标溜子和所述风力分级系统相连,所述提升机的入口通过管道或非标溜子和所述辊压机相连。另外,所述矿选系统还包括收尘系统,所述收尘系统与所述动力筛分系统和所述干式风磁选机组通过管道或非标溜子相连,且所述收尘系统的位置高于所述支撑架的第一层。
在本实施例中,所述干式风磁选系统由多套干式风磁选机组构成,所述多套干式风磁选机组之间通过叠加组合连接,并设置在所述支撑架的第一层或者第二层上;所述支撑架的第一层为地面。
在矿选的过程中,经过破碎的粗矿首先经过提升机提升,提升后通过管道或非标溜子运输进入位于所述支撑架第三层的风力分级系统,所述风力分级系统对粗矿进行分级,选出符合粒径要求的细矿送入位于所述支撑架第四层的动力筛分系统,不符合粒径要求的粗矿喂入位于所述支撑架第二层的稳流仓,再通过所述稳流仓的收集及控制送入位于所述支撑架第一层的辊压机中,所述辊压机对粗矿进行辊压磨碎,将辊压磨碎后的粗矿再次送入所述风力分级系统中进行分级;所述动力筛分系统对细矿进行筛分,选出符合粒径要求的超细矿送入下一道工序,而不符合粒径要求的细矿喂入到所述稳流仓,再通过所述稳流仓的收集及控制送入所述辊压机中,所述辊压机对细矿进行辊压磨碎,将辊压磨碎后的粗矿再次送入提升机入口,所述提升机将粗矿再次送入所述风力分级系统中进行分级,重复上述步骤;而经过动力筛分系统筛选出来的符合粒径要求的超细矿喂入位于所述支撑架第三层的过渡仓,经过所述过渡仓的收集和调节再通过管道喂入位于干式风磁选机组进行磁选。
本实施例实施效果:
1.本实施例占地面积少,按小时处理量70吨的生产规模计算,现有技术占地约6000平方米,而本发明占地只需1200平方米,减少占地80%;同时也减少了各个装置间物料的传输距离,现有技术中物料的传输距离至少是在600米以上,而本发明物料的传输距离只有100米,减少传输距离83%;同时也减少了能耗,按 处理量相同进行比较,现有技术需要23度电,而本发明只需15度电,节电35%;磁铁矿品位达到65%;另一方面,本矿选系统选出的成品粒度可根据用户需要进行调节,调节范围宽,成品粒度可调节范围:-200目占55~95%。
2.本实施例效率高、产量高。物料运输路径短,与皮带机相比,效率提高了50%以上;充分利用了物料的自游流动性,缩短了物料在中间环节的停留时间,从而再次提高了生产效率;采用本实施例的矿选系统处理粗矿,以料床形式进行挤压破碎粉磨,矿物颗粒是按结晶体形成面自然解离磨碎的,即使那些未完全解离的矿物颗粒在其内部也存在许多微裂纹,为再次的磨碎更加容易,因此可提高处理量,按小时处理量70吨的生产规模计算,产量可达80~90吨。
3.空气排放的粉尘含量小于20mg/Nm3,优于国家标准规定的粉尘排放要求不大于30mg/Nm3的环保要求,无大气污染。
4.设备的使用寿命长,可达到15000小时以上。

Claims (12)

  1. 一种矿选系统,包括辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统,其特征在于:所述磁选系统还包括设置于基面的支撑架,所述支撑架从基面向上分为四层,从底层到顶层依次为第一层到第四层,所述辊压机设置在所述支撑架的第一层,所述稳流仓设置在所述支撑架的第二层,所述风力分级系统设置在所述支撑架的第三层,所述动力筛分系统设置在所述支撑架的第四层,所述干式风磁选系统设置在所述支撑架的第一、二和/或三层。
  2. 如权利要求1所述的矿选系统,其特征在于:所述辊压机和所述稳流仓相连,所述稳流仓和所述风力分级系统相连,所述风力分级系统和所述动力筛分系统相连,所述动力筛分系统和所述干式风磁选系统相连,所述动力筛分系统和所述稳流仓相连。
  3. 如权利要求2所述的矿选系统,其特征在于:所述干式风磁选系统包括过渡仓和干式磁选机组,所述过渡仓设置所述支撑架的第三层,所述干式风磁选机组设置在所述支撑架的第一和/或第二层。
  4. 如权利要求3所述的矿选系统,所述过渡仓和所述动力筛分系统相连,所述干式风磁选系统和所述过渡仓相连。
  5. 如上述任意一项权利要求所述的矿选系统,其特征在于:所述矿选系统还包括提升机;所述提升机的出口和所述风力分级系统相连,所述提升机的入口和所述辊压机相连。
  6. 如上述任意一项权利要求所述的矿选系统,其特征在于:所述矿选系统还包括收尘系统,所述收尘系统与所述动力筛分系统和/或所述干式风磁选系统相连。
  7. 如权利要求2、4、5或6所述的矿选系统,其特征在于:所述相连是通过管道、溜槽、非标溜子、收料槽、喂料槽、收料管或喂料管相连。
  8. 如权利要求6项所述的矿选系统,其特征在于:所述收尘系统设置于所述支撑架的第一层或第二层。
  9. 如上述任意一项权利要求所述的矿选系统,其特征在于:所述干式风磁选系统包括一套或多套干式风磁选机组。
  10. 如权利要求9所述的矿选系统,其特征在于:多套干式风磁选机组设置于所述支撑架的第一层和/或第二层,或多套干式风磁选机组采用上下叠加方式设置在所述支撑架的第一层。
  11. 如权利要求9或10所述的矿选系统,其特征在于:多套干式风磁选机组之间通过管道、溜槽、非标溜子、收料槽、喂料槽、收料管或喂料管方式相连。
  12. 如上述任意一项权利要求所述的矿选系统,其特征在于:所述基面为地面。
PCT/CN2016/073193 2015-02-15 2016-02-02 一种矿选系统 WO2016127869A1 (zh)

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