Fluorite ore sorting system
The fluorite ore separation system addresses inefficiencies in current methods by integrating advanced heavy medium separation and flotation techniques, enabling efficient and cost-effective recovery of high-purity fluorite with reduced energy consumption and environmental impact.
Patent Information
- Application Number
- CN202421969727.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-14
AI Technical Summary
The existing fluorite ore sorting methods have problems such as unsatisfactory sorting indicators, high production costs and low efficiency.
The combination process of material preparation system, first-level heavy media sorting system, second-level heavy media sorting system, fine-grain concentration system and flotation system is adopted to achieve efficient sorting of fluorite ore through heavy media sorting and flotation technology.
It improves the sorting accuracy, reduces energy consumption and costs, and realizes environmentally friendly and efficient fluorite ore sorting, which has the advantages of fast investment results and strong profitability.
Smart Images
Figure CN223096971U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of mineral separation, and particularly relates to a fluorite ore separation system. Background Art
[0002] Fluorite is an important raw material for industries such as metallurgy, chemical engineering, and silicate. Currently, the world's proven fluorite mineral reserves are approximately 500 million tons. China's fluorite reserves rank third in the world, and there are fluorite deposits of different scales in more than 20 provinces across the country. However, the proportion of high-grade fluorite ore in China is small, and there are many associated ores. Years of mining have made domestic rich fluorite ores increasingly scarce.
[0003] Currently, the beneficiation methods for fluorite ore mainly include hand separation, flotation, and gravity separation. Hand separation is mainly used for fluorite ores where the boundary between fluorite and gangue minerals is clear and can be easily identified by the naked eye, and it is often used as an auxiliary means for other methods; however, its disadvantages are low separation efficiency, high labor intensity, and difficulty in maintaining constant beneficiation indexes. Flotation is the most commonly used separation method and the only method to obtain high-grade fluorite concentrate powder; however, its disadvantages are relatively high production costs and unsatisfactory separation indexes for some ores with relatively high calcium carbonate content. The commonly used equipment in gravity separation is a jig, but its separation indexes for fine-grained ores are not ideal. Utility Model Content
[0004] The purpose of this application is to provide a fluorite ore separation system to solve the problems of unsatisfactory separation indexes, high production costs, and low efficiency existing in the prior art.
[0005] The embodiments of this application can be implemented through the following technical solutions:
[0006] A fluorite ore separation system includes a material preparation system, a primary heavy medium separation system, a secondary heavy medium separation system, a fine-grained concentration system, and a flotation system;
[0007] The discharge ports of the material preparation system are respectively the b - a particle size material outlet and the -b particle size material outlet. The b - a particle size material outlet of the material preparation system is connected to the inlet of the primary heavy medium separation system. The discharge ports of the primary heavy medium separation system are respectively the lump ore concentrate product outlet, the fine crushing crusher product outlet, and the primary magnetic tail water product outlet;
[0008] The -b particle size material outlet of the material preparation system is connected to the inlet of the secondary heavy medium separation system; the outlets of the secondary heavy medium separation system are respectively the first tailing product outlet, the concentrate product outlet, the secondary magnetic tail water product outlet, and the -c particle size material outlet;
[0009] The primary magnetic tail water outlet, the secondary magnetic tail water outlet, and the -c particle size material outlet are respectively connected to the inlet of the fine-grained concentration system. The outlet of the fine-grained concentration system is the fine particle product outlet and the return water outlet;
[0010] The concentrate product outlet of the secondary heavy medium separation system and the fine product outlet of the fine-grained concentration system are respectively connected to the inlet of the flotation system. The flotation system is used to obtain high-grade fluorite concentrate powder through flotation, so that the outlet of the flotation system outputs fine concentrate products and second tailing products respectively.
[0011] Further, the material preparation system includes a feeder, a coarse crusher, a primary classifier screen, and an intermediate crusher. The outlet of the feeder is connected to the inlet of the primary classifier screen through the coarse crusher. The outlet of the primary classifier screen is respectively connected to the intermediate crusher, the primary heavy medium separation system, and the secondary heavy medium separation system.
[0012] Further, the primary heavy medium separation system includes a primary combined medium tank, a primary heavy medium cyclone, and a primary magnetic separator. The inlets of the primary heavy medium cyclone are respectively connected to the outlets of the primary classifier screen and the primary combined medium tank;
[0013] The outlets of the primary heavy medium cyclone are respectively connected to the inlets of the first-stage No. 1 pre-dephlegmator screen, the first-stage No. 2 pre-dephlegmator screen, and the first-stage No. 3 pre-dephlegmator screen;
[0014] The underflow product outlet of the first-stage No. 1 pre-dephlegmator screen is connected to the inlet of the first-stage shunt box, or is simultaneously connected to the inlet of the first-stage shunt box and the inlet of the primary combined medium tank. The overflow outlet of the first-stage No. 1 pre-dephlegmator screen is connected to the inlet of the first-stage No. 1 vibrating dephlegmator screen. The overflow outlet of the first-stage No. 2 pre-dephlegmator screen is connected to the inlet of the first-stage No. 2 vibrating dephlegmator screen. The overflow outlets of the first-stage No. 1 vibrating dephlegmator screen and the first-stage No. 2 vibrating dephlegmator screen are both connected to the inlet of the fine crusher. The outlet of the fine crusher is used as the fine crusher product outlet and is connected to the inlet of the primary classifier screen;
[0015] The overflow outlet of the first-stage No. 3 pre-dephlegmator screen is connected to the inlet of the first-stage No. 3 vibrating dephlegmator screen. The overflow product of the first-stage No. 3 vibrating dephlegmator screen is the finished product of the first-stage lump ore concentrate.
[0016] Further, the dilute medium outlet of the first-stage shunt box, the underflow outlets of the first-stage No. 1 vibrating dephlegmator screen, the first-stage No. 2 vibrating dephlegmator screen, and the first-stage No. 3 vibrating dephlegmator screen are respectively connected to the inlet of the primary magnetic separator. The combined medium outlet of the first-stage shunt box, the underflow product outlets of the first-stage No. 2 pre-dephlegmator screen, the first-stage No. 3 pre-dephlegmator screen, and the magnetic product outlet of the primary magnetic separator are respectively connected to the inlet of the primary combined medium tank. The non-magnetic product outlet of the primary magnetic separator is the primary magnetic tail water product outlet.
[0017] Further, the secondary heavy medium separation system includes a secondary sizing screen, a secondary mixing tank, a secondary heavy medium cyclone, a first secondary pre-dense medium screen, and a second secondary pre-dense medium screen. The -b particle size material outlet of the material preparation system is connected to the secondary sizing screen. The oversize product outlet of the secondary sizing screen is connected to the inlet of the secondary mixing tank. The outlet of the secondary mixing tank is connected to the inlet of the secondary heavy medium cyclone. The two outlets of the secondary heavy medium cyclone are respectively connected to the first secondary pre-dense medium screen and the second secondary pre-dense medium screen.
[0018] Further, the secondary heavy medium separation system further includes a first secondary vibrating dense medium screen and a secondary magnetic separator;
[0019] The underflow product outlet of the first secondary pre-dense medium screen is connected to the inlet of the secondary mixing tank. The oversize outlet of the first secondary pre-dense medium screen is connected to the first secondary vibrating dense medium screen. The oversize product outlet of the first secondary vibrating dense medium screen is the concentrate product outlet. The underflow outlet of the first secondary vibrating dense medium screen is connected to the inlet of the secondary magnetic separator. The magnetic product outlet of the secondary magnetic separator is connected to the inlet of the secondary mixing tank.
[0020] Further, the secondary heavy medium separation system further includes a second secondary vibrating dense medium screen, a secondary shunt box, and a secondary magnetic separator;
[0021] The oversize outlet of the second secondary pre-dense medium screen is connected to the inlet of the second secondary vibrating dense medium screen. The oversize product of the second secondary vibrating dense medium screen is the first tailing product outlet. The underflow product outlet of the second secondary pre-dense medium screen is connected to the inlet of the secondary shunt box, or simultaneously connected to the secondary mixing tank and the secondary shunt box;
[0022] The dilute medium outlet of the secondary shunt box and the underflow outlet of the second secondary vibrating dense medium screen are connected to the inlet of the secondary magnetic separator. The combined medium outlet of the secondary shunt box and the magnetic product outlet of the secondary magnetic separator are respectively connected to the inlet of the secondary mixing tank. The non-magnetic product outlet of the secondary magnetic separator is the secondary magnetic tail water outlet.
[0023] Further, the fine particle size concentration system includes a concentration cyclone and a thickener. The first magnetic tail water outlet, the second magnetic tail water outlet, and the underflow product outlet of the secondary sizing screen are respectively connected to the inlet of the concentration cyclone. The overflow outlet of the concentration cyclone is connected to the inlet of the thickener. The bottom flow outlet of the thickener and the bottom flow outlet of the concentration cyclone are combined into the fine particle product outlet. The overflow outlet of the thickener is the return water outlet.
[0024] Further, the flotation system includes a mill and a flotation machine. The concentrate product outlet of the secondary heavy medium separation system and the fine particle product outlet of the fine particle classification system are respectively connected to the inlet of the mill. The product outlet of the mill is connected to the inlet of the flotation machine. The foam product generated by the flotation machine is the fine particle concentrate product, and the in-tank product generated is the second tailing product.
[0025] Further, the upper screen mesh size of the first-stage classification screen is set to 30 mm - 60 mm, and the lower screen mesh size of the first-stage classification screen is set to 6 mm - 12 mm.
[0026] The fluorite ore separation system provided by the embodiments of the present application has at least the following beneficial effects:
[0027] 1) It can directly produce qualified lump ore concentrate, recover valuable minerals as early as possible, and reduce energy consumption and costs in subsequent treatment processes;
[0028] 2) Coarse-grained ores can be discarded as early as possible, which can avoid unnecessary processing of worthless materials and achieve the purpose of energy conservation and consumption reduction;
[0029] 3) Advanced and efficient heavy medium separation technology is adopted, the whole set of systems has a high degree of automation, and the separation process is easy to control;
[0030] 4) Qualified tailings can be discarded in advance, which can improve the equipment utilization rate;
[0031] 5) The material preparation system, the first-stage heavy medium separation system, the secondary heavy medium separation system, and the fine particle classification system do not need to add harmful agents, and the recycled water can be directly used, which is environmentally friendly;
[0032] 6) In addition, the system also has the advantages of quick investment return and strong profitability. Description of the Drawings
[0033] Figure 1 is the overall structural schematic diagram of this embodiment.
[0034] The reference numerals in the figure
[0035] 1 - Material preparation system; 11 - Feeding machine; 12 - Coarse crushing crusher; 13 - First-stage classification screen; 14 - Medium crushing crusher;
[0036] 2 - First-stage heavy medium separation system; 21 - First-stage combined medium tank; 22 - First-stage heavy medium cyclone; 231 - First-stage No. 1 pre-dense medium screen; 232 - First-stage No. 1 vibrating dense medium screen; 233 - First-stage shunt box; 241 - First-stage No. 2 pre-dense medium screen; 242 - First-stage No. 2 vibrating dense medium screen; 251 - First-stage No. 3 pre-dense medium screen; 252 - First-stage No. 3 vibrating dense medium screen; 26 - First-stage magnetic separator; 27 - Fine crushing crusher;
[0037] 3 - Secondary heavy medium separation; 31 - Secondary sizing screen; 32 - Secondary mixing tank; 33 - Secondary heavy medium cyclone; 341 - No. 1 secondary pre - desliming screen; 342 - No. 1 secondary vibrating desliming screen; 343 - Secondary shunt box; 351 - No. 2 secondary pre - desliming screen; 352 - No. 2 secondary vibrating desliming screen; 36 - Secondary magnetic separator;
[0038] 4 - Fine - grain concentration system; 41 - Concentration cyclone; 42 - Thickener;
[0039] 5 - Flotation system; 51 - Mill; 52 - Flotation machine. Detailed implementation manners
[0040] Hereinafter, the present application will be further described based on preferred embodiments with reference to the accompanying drawings.
[0041] In addition, for the convenience of understanding, various components in the drawings are enlarged (thick) or reduced (thin), but this is not to limit the protection scope of the present application.
[0042] Singular - form words also include plural meanings, and vice versa.
[0043] In the description of the embodiments of the present application, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship when the products in the embodiments of the present application are commonly placed. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, in the description of the present application, in order to distinguish different units, the terms "first", "second", etc. are used in this specification, but these are not restricted by the manufacturing sequence and should not be construed as indicating or implying relative importance. In the detailed description and claims of the present application, their names may be different.
[0044] The words in this specification are used to describe the embodiments of the present application, but are not intended to limit the present application. It should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "connected", "coupled" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above - mentioned terms in the present application can be specifically understood.
[0045] Such as Figure 1As shown in the figure, a fluorite ore separation system includes a material preparation system 1, a primary heavy medium separation system 2, a secondary heavy medium separation system 3, a fine-grained concentration system 4, and a flotation system 5. The discharge ports of the material preparation system 1 are respectively the b-a particle size material outlet and the -b particle size material outlet. The b-a particle size material outlet of the material preparation system 1 is connected to the inlet of the primary heavy medium separation system 2. The discharge ports of the primary heavy medium separation system 2 are respectively the lump ore concentrate product outlet, the fine crushing crusher product outlet, and the primary magnetic tail water product outlet. The primary heavy medium separation system 2 is used to perform primary heavy separation on the b-a particle size material and then output the ore concentrate product, the fine crushing crusher product, and the primary magnetic tail water product respectively;
[0046] The -b particle size material outlet of the material preparation system 1 is connected to the inlet of the secondary heavy medium separation system 3; the outlets of the secondary heavy medium separation system 3 are respectively the tailing product outlet, the concentrate product outlet, the secondary magnetic tail water product outlet, and the -c particle size material outlet. The secondary heavy medium separation system 3 is used to perform secondary heavy separation on the -b particle size material and then output the first tailing product, the concentrate product, the secondary magnetic tail water product, and the -c particle size material respectively;
[0047] The primary magnetic tail water outlet, the secondary magnetic tail water outlet, and the -c particle size material outlet are respectively connected to the inlet of the fine-grained concentration system 4. The outlet of the fine-grained concentration system 4 is the fine-grained product outlet and the return water outlet. The fine-grained concentration system 4 is used to further increase the concentration of the fine-grained product through a thickener;
[0048] The concentrate product outlet of the secondary heavy medium separation system 3 and the fine-grained product outlet of the fine-grained concentration system 4 are respectively connected to the inlet of the flotation system 5. The flotation system 5 is used to obtain high-grade fluorite concentrate powder through flotation, so that the outlets of the flotation system 5 respectively output the fine-grained concentrate product and the second tailing product.
[0049] Specifically, the material preparation system 1 includes a feeder 11, a coarse crusher 12, a primary classifier 13, and a medium crusher 14. The outlet of the feeder 11 is connected to the inlet of the primary classifier 13 through the coarse crusher 12. The outlets of the primary classifier 13 are respectively connected to the medium crusher 14, the primary heavy medium separation system 2, and the secondary heavy medium separation system 3, so that the material can be fed into the coarse crusher 12 through the feeder 11, and after being coarsely crushed by the coarse crusher 12, it is fed into the primary classifier 13. The primary classifier 13 then feeds the coarsely crushed material into the medium crusher 14, the primary heavy medium separation system 2, and the secondary heavy medium separation system 3 according to the particle size respectively, for processing the material according to the particle size and improving the material separation accuracy.
[0050] In some preferred embodiments, the upper screen size of the primary sizing screen 13 is set in the range of 30 mm - 60 mm, and the lower screen size of the primary sizing screen 13 is set in the range of 6 mm - 12 mm. For ease of description, in the illustration of this embodiment, a and b respectively refer to the demarcations made according to particle sizes of 40 mm and 10 mm. Materials with a particle size greater than 40 mm are fed into the medium crusher 14, materials with a particle size between 10 mm and 40 mm are fed into the primary dense medium separation system 2, and materials with a particle size less than 10 mm are fed into the secondary dense medium separation system 3.
[0051] In some preferred embodiments, the outlet of the medium crusher 14 is connected to the inlet of the primary sizing screen 13, such that after materials with a particle size greater than 40 mm are fed into the medium crusher 14, the materials are crushed by the medium crusher 14 and then enter the primary sizing screen 13 again, so that the primary sizing screen 13 can screen the materials crushed by the medium crusher 14 again.
[0052] In some preferred embodiments, the primary dense medium separation system 2 includes a primary combined medium tank 21 and a primary dense medium cyclone 22. The inlet of the primary dense medium cyclone 22 is respectively connected to the outlets of the primary sizing screen 13 and the primary combined medium tank 21. A dense medium suspension with a density of 2.25 g / cm 3 is configured in the primary combined medium tank 21. The primary combined medium tank 21 feeds the dense medium suspension into the primary dense medium cyclone 22 through a pump, so that materials with a particle size between 10 - 40 mm are separated inside the primary dense medium cyclone.
[0053] In some preferred embodiments, the primary dense medium separation system 2 further includes a primary pre - desliming screen 231, a primary vibrating desliming screen 232, a primary shunt box 233, a secondary pre - desliming screen 241, a secondary vibrating desliming screen 242, a tertiary pre - desliming screen 251, and a tertiary vibrating desliming screen 252. The first - stage overflow outlet of the primary dense medium cyclone 22 is connected to the inlet of the primary pre - desliming screen 231, the second - stage overflow outlet of the primary dense medium cyclone 22 is connected to the inlet of the secondary pre - desliming screen 241, and the second - stage underflow outlet of the primary dense medium cyclone 22 is connected to the inlet of the tertiary pre - desliming screen 251.
[0054] Further, the underflow product outlet of the first-stage No. 1 pre-dense-medium screen 231 is connected to the inlet of the first-stage flow splitting box 233, or simultaneously connected to the inlet of the first-stage flow splitting box 233 and the inlet of the first-stage combined dense-medium tank 21. The overflow outlet of the first-stage No. 1 pre-dense-medium screen 231 is connected to the inlet of the first-stage No. 1 vibrating dense-medium screen 232, and the overflow product outlet of the first-stage No. 1 vibrating dense-medium screen 232 is the first-stage light product outlet; the overflow outlet of the first-stage No. 2 pre-dense-medium screen 241 is connected to the inlet of the first-stage No. 2 vibrating dense-medium screen 242, and the overflow product of the first-stage No. 2 vibrating dense-medium screen 242 is the first-stage medium product outlet; the overflow outlet of the first-stage No. 3 pre-dense-medium screen 251 is connected to the inlet of the first-stage No. 3 vibrating dense-medium screen 252, and the overflow product of the first-stage No. 3 vibrating dense-medium screen 252 is the first-stage heavy product outlet.
[0055] In some preferred embodiments, the light products separated by the first-stage heavy-medium cyclone 22 sequentially enter the first-stage No. 1 pre-dense-medium screen 231 and the first-stage No. 1 vibrating dense-medium screen 232, and the overflow product of the first-stage No. 1 vibrating dense-medium screen 232 is the first-stage light product; the medium products separated by the first-stage heavy-medium cyclone 22 sequentially enter the first-stage No. 2 pre-dense-medium screen 241 and the first-stage No. 2 vibrating dense-medium screen 242, and the overflow product of the first-stage No. 2 vibrating dense-medium screen 242 is the first-stage medium product; the heavy products separated by the first-stage heavy-medium cyclone 22 sequentially enter the first-stage No. 3 pre-dense-medium screen 251 and the first-stage No. 3 vibrating dense-medium screen 252, and the overflow product of the first-stage No. 3 vibrating dense-medium screen 252 is the first-stage lump ore concentrate product.
[0056] In some preferred embodiments, to achieve the purification and refinement of the system medium, some of the suspensions generated in the above treatment process are reprocessed in this embodiment.
[0057] Specifically, the first-stage heavy-medium separation system 2 further includes a first-stage magnetic separator 26. The underflow outlets of the first-stage No. 1 vibrating dense-medium screen 232, the first-stage No. 2 vibrating dense-medium screen 242, the first-stage No. 3 vibrating dense-medium screen 252, and the dilute medium outlet of the first-stage flow splitting box 233 are all connected to the inlet of the first-stage magnetic separator 26, so that some of the suspensions in the vibrating dense-medium screens are pumped to the first-stage magnetic separator 26 for purification and refinement to obtain the first-stage qualified suspension and the first-stage magnetic tail water.
[0058] In some preferred embodiments, the primary magnetic separator 26 is provided with two outlets, namely a magnetic product outlet and a non-magnetic product outlet. The magnetic product outlet, the combined medium outlet of the primary shunt box 233, the underflow product outlet of the primary second pre-dephlegmator 241, and the underflow product outlet of the primary third pre-dephlegmator 251 are respectively connected to the inlet of the primary combined medium tank 21. The outlet of the primary combined medium tank 21 is connected to the inlet of the primary heavy medium cyclone 22, so that the magnetic product can enter the primary heavy medium cyclone 22 through the primary combined medium tank 21 for use as qualified medium, and the non-magnetic product outlet is the primary magnetic tail water outlet.
[0059] In some preferred embodiments, the primary heavy medium separation system 2 further includes a fine crusher 27. The oversize outlets of the primary first vibrating dephlegmator 232 and the primary second vibrating dephlegmator 242 are both connected to the inlet of the fine crusher 27, and the outlet of the fine crusher 27 is connected to the inlet of the primary sizing screen 13 of the material preparation system 1, so that the primary light product and the primary medium product are fed into the fine crusher 27, and the fine crusher 27 feeds the processed product into the primary sizing screen 13 of the material preparation system 1 for re-sizing treatment to improve the concentrate product grade and recovery rate.
[0060] In some preferred embodiments, the secondary heavy medium separation system 3 includes a secondary sizing screen 31, a secondary mixing tank 32, a secondary heavy medium cyclone 33, a secondary second pre-dephlegmator 341, a secondary second vibrating dephlegmator 342, a secondary shunt box 343, a secondary first pre-dephlegmator 351, a secondary first vibrating dephlegmator 352, and a secondary magnetic separator 36. The -b fraction material outlet of the material preparation system 1 is connected to the secondary sizing screen 31. The oversize product outlet of the secondary sizing screen 31 is connected to the inlet of the secondary mixing tank 32. The outlet of the secondary mixing tank 32 is connected to the inlet of the secondary heavy medium cyclone 33. The two outlets of the secondary heavy medium cyclone 33 are respectively connected to the secondary second pre-dephlegmator 341 and the secondary first pre-dephlegmator 351, so that materials with different densities can enter different dephlegmators respectively to become qualified products.
[0061] Specifically, the underflow outlet of the secondary heavy medium cyclone 33 is connected to the inlet of the secondary first pre-dense medium screen 351. The under-screen product outlet of the secondary first pre-dense medium screen 351 is connected to the inlet of the secondary mixing tank 32. The over-screen outlet of the secondary first pre-dense medium screen 351 is connected to the secondary first vibrating dense medium screen 352. The over-screen product outlet of the secondary first vibrating dense medium screen 352 is the concentrate product outlet. The under-screen outlet of the secondary first vibrating dense medium screen 352 is connected to the inlet of the secondary magnetic separator 36. The magnetic product outlet of the secondary magnetic separator 36 is connected to the inlet of the secondary mixing tank 32.
[0062] The overflow outlet of the secondary heavy medium cyclone 33 is connected to the inlet of the secondary second pre-dense medium screen 341. The over-screen outlet of the secondary second pre-dense medium screen 341 is connected to the inlet of the secondary second vibrating dense medium screen 342. The over-screen product of the secondary second vibrating dense medium screen 342 is the first tailing product outlet. The under-screen product outlet of the secondary second pre-dense medium screen 341 is connected to the inlet of the secondary shunt box 343, or is simultaneously connected to the secondary mixing tank 32 and the secondary shunt box 343.
[0063] Further, the dilute medium outlet of the secondary shunt box 343, the under-screen outlet of the secondary second vibrating dense medium screen 342 are connected to the inlet of the secondary magnetic separator 36. The combined medium outlet of the secondary shunt box 343 and the magnetic product outlet of the secondary magnetic separator 36 are respectively connected to the inlet of the secondary mixing tank 32. The non-magnetic product outlet of the secondary magnetic separator 36 is the secondary magnetic tail water outlet.
[0064] In some preferred embodiments, the lower particle size limit of the secondary sizing screen 31 is usually 0.5 mm or 0.75 mm. For ease of description, b and c in the drawings of this embodiment respectively refer to the definitions based on particle sizes of 10 mm and 0.5 mm. The material with a particle size less than 10 mm produced by the material preparation system 1 is fed into the secondary sizing screen 31. The secondary sizing screen 31 classifies the material according to the particle size. Among them, the material with a particle size between 0.5 mm and 10 mm is fed into the secondary mixing tank 32. A heavy medium suspension with a density of 2.08 g / cm 3 is configured in the secondary mixing tank 32, and the material and the heavy medium suspension are fed into the secondary heavy medium cyclone 33 together by a pump to achieve separation.
[0065] In some preferred embodiments, the heavy products separated by the secondary heavy medium cyclone 33 enter the secondary first pre-dense medium screen 351 and the secondary first vibrating dense medium screen 352. The over-screen product of the secondary first vibrating dense medium screen 352 is the concentrate product.
[0066] In some preferred embodiments, the light products separated by the secondary dense medium cyclone 33 enter the secondary No. 2 pre-dense medium screen 341 and the secondary No. 2 vibrating dense medium screen 342. The products on the screen of the secondary No. 2 vibrating dense medium screen 342 are the first tailing products. The dilute medium of the secondary shunt box 343, the underflow suspension of the secondary No. 2 vibrating dense medium screen 342, and the underflow suspension of the secondary No. 1 vibrating dense medium screen 352 are pumped to the secondary magnetic separator 36 for purification and refinement to obtain qualified suspension and secondary magnetic tail water.
[0067] In some preferred embodiments, the fine-grained concentration system 4 includes a concentration cyclone 41 and a thickener 42. The primary magnetic tail water outlet, the secondary magnetic tail water outlet, and the underflow product outlet of the secondary sizing screen 31 are respectively connected to the inlet of the concentration cyclone 41. The overflow outlet of the concentration cyclone 41 is connected to the inlet of the thickener 42. The bottom flow outlet of the thickener 42 and the bottom flow outlet of the concentration cyclone 41 are combined into a fine-grained product outlet. The overflow outlet of the thickener 42 is a return water outlet for recycling.
[0068] Specifically, the primary magnetic tail water, secondary magnetic tail water, and -0.5mm fine-grained pulp are pumped to the concentration cyclone 41. The feed pressure of the concentration cyclone 41 is 0.15 Mpa. The bottom flow concentration of the concentration cyclone 41 is 55%. The overflow of the concentration cyclone 41 is fed into the thickener 42. The bottom flow concentration of the thickener 42 is 21%. The overflow of the thickener 42 is return water for recycling. The bottom flow products of the concentration cyclone 41 and the thickener 42 are fine-grained products.
[0069] In some preferred embodiments, the flotation system 5 includes a mill 51 and a flotation machine 52. The concentrate product outlet of the secondary dense medium separation system 3 and the fine-grained product outlet of the fine-grained concentration system 4 are connected to the inlet of the mill 51. The product outlet of the mill 51 is connected to the inlet of the flotation machine 52, so that the concentrate and fine grains are fed into the mill 51 of the grinding and flotation system. When the mill 51 grinds the fed material to 70% passing through -200 mesh, a regulator, a collector, and a frother are added and fed into the subsequent flotation machine 52. The foam products generated by the flotation machine 52 are fine-grained concentrate products, and the products in the tank are the second tailing products.
[0070] To further confirm the improvement of the sorting accuracy of fluorite ore in this application, in this embodiment, for a certain quartz-fluorite ore with the original ore CaF2 grade of 46.91%, the main gangue minerals are quartz, followed by feldspar, calcite, etc., the sorting indexes obtained by adopting the scheme are shown, and the data are as follows in the table:
[0071] Product Name Yield / % <![CDATA[CaF2 content / %]]> <![CDATA[CaF2 distribution rate / %]]> Lump Concentrate Product 18.28 76.32 29.74 Fine Concentrate Product 31.47 97.29 65.28 First Tailings Product 25.98 4.72 2.61 Second Tailings Product 24.27 4.58 2.37 Total 100.00 46.91 100.00
[0072] As can be seen from the above data, by using this fluorite ore separation system to process this material, separation indexes can be obtained as follows: the grade of lump ore concentrate product is 76.32% and the recovery rate is 29.74%; the grade of fine-grained concentrate product is 97.29% and the recovery rate is 65.28%. The grades of both the lump ore concentrate product and the fine-grained concentrate product meet the quality standards of qualified concentrates.
[0073] To sum up, by using this fluorite ore separation system, the material preparation system can provide qualified raw materials for the subsequent systems; the first-stage heavy medium separation system can recover qualified lump ore concentrates earlier, which conforms to the ore dressing principle of "recovering as early as possible if possible"; the second-stage heavy medium separation system removes part of the coarse-grained tailings before grinding, which conforms to the ore dressing principle of "discarding as early as possible if possible", improves the equipment utilization rate, and at the same time the discarded coarse sand can be sold as building materials; the fine-grained concentration system provides raw materials for the subsequent flotation system and realizes the recycling of backwater; the flotation system can produce fine-grained concentrates with high grades. In addition, this system also has the advantages of low operating cost, high automation degree, short investment payback period, and little environmental pollution, can achieve the dual goals of economic benefits and environmental protection, and is suitable for subsequent popularization and application.
[0074] The specific implementation manners of this application have been introduced in detail above. For those skilled in the art of this technology, without departing from the principle of this application, several improvements and modifications can still be made to this application, and these improvements and modifications also fall within the protection scope of the claims of this application.
Claims
1. A fluorite ore separation system, characterized in that, Including: A material preparation system (1), a primary heavy medium separation system (2), a secondary heavy medium separation system (3), a fine-grained concentration system (4), and a flotation system (5); The discharge ports of the material preparation system (1) are respectively a b-a sized particle material outlet and a -b sized particle material outlet. The b-a sized particle material outlet of the material preparation system (1) is connected to the inlet of the primary heavy medium separation system (2). The discharge ports of the primary heavy medium separation system (2) are respectively a lump ore concentrate product outlet, a fine crushing crusher product outlet, and a primary magnetic tail water product outlet; The -b sized particle material outlet of the material preparation system (1) is connected to the inlet of the secondary heavy medium separation system (3); The outlets of the secondary heavy medium separation system (3) are respectively a first tailing product outlet, a concentrate product outlet, a secondary magnetic tail water product outlet, and a -c sized particle material outlet; The primary magnetic tail water outlet, the secondary magnetic tail water outlet, and the -c sized particle material outlet are respectively connected to the inlet of the fine-grained concentration system (4). The outlet of the fine-grained concentration system (4) is a fine particle product outlet and a return water outlet; The concentrate product outlet of the secondary heavy medium separation system (3) and the fine particle product outlet of the fine-grained concentration system (4) are respectively connected to the inlet of the flotation system (5). The flotation system (5) is used to obtain high-grade fluorite concentrate powder through flotation, so that the outlets of the flotation system (5) respectively output fine particle concentrate products and second tailing products.
2. The fluorite ore separation system according to claim 1, wherein: The material preparation system (1) includes a feeding machine (11), a coarse crushing crusher (12), a primary sizing screen (13), and a medium crushing crusher (14). The outlet of the feeding machine (11) is connected to the inlet of the primary sizing screen (13) through the coarse crushing crusher (12). The outlet of the primary sizing screen (13) is respectively connected to the medium crushing crusher (14), the primary heavy medium separation system (2), and the secondary heavy medium separation system (3).
3. The fluorite ore separation system according to claim 2, wherein: The primary heavy medium separation system (2) includes a primary combined medium tank (21), a primary heavy medium cyclone (22), and a primary magnetic separator (26). The inlet of the primary heavy medium cyclone (22) is respectively connected to the outlets of the primary sizing screen (13) and the primary combined medium tank (21); The outlets of the primary heavy medium cyclone (22) are respectively connected to the inlets of a primary No. 1 pre-degreasing screen (231), a primary No. 2 pre-degreasing screen (241), and a primary No. 3 pre-degreasing screen (251); The under-screen product outlet of the first-stage No. 1 pre-dense-medium screen (231) is connected to the inlet of the first-stage diversion box (233), or simultaneously connected to the inlet of the first-stage diversion box (233) and the inlet of the first-stage combined dense-medium tank (21). The over-screen outlet of the first-stage No. 1 pre-dense-medium screen (231) is connected to the inlet of the first-stage No. 1 vibrating dense-medium screen (232). The over-screen outlet of the first-stage No. 2 pre-dense-medium screen (241) is connected to the inlet of the first-stage No. 2 vibrating dense-medium screen (242). The over-screen outlets of the first-stage No. 1 vibrating dense-medium screen (232) and the first-stage No. 2 vibrating dense-medium screen (242) are both connected to the inlet of the fine crusher (27). The outlet of the fine crusher (27) serves as the fine crusher product outlet and is connected to the inlet of the first-stage sizing screen (13). The over-screen outlet of the first-stage No. 3 pre-dense-medium screen (251) is connected to the inlet of the first-stage No. 3 vibrating dense-medium screen (252). The over-screen product of the first-stage No. 3 vibrating dense-medium screen (252) is the finished product of the first-stage lump ore concentrate.
4. The fluorite ore separation system according to claim 3, wherein: The dilute dense-medium outlet of the first-stage diversion box (233), the under-screen outlet of the first-stage No. 1 vibrating dense-medium screen (232), the under-screen outlet of the first-stage No. 2 vibrating dense-medium screen (242), and the under-screen outlet of the first-stage No. 3 vibrating dense-medium screen (252) are respectively connected to the inlet of the first-stage magnetic separator (26). The combined dense-medium outlet of the first-stage diversion box (233), the under-screen product outlet of the first-stage No. 2 pre-dense-medium screen (241), the under-screen product outlet of the first-stage No. 3 pre-dense-medium screen (251), and the magnetic product outlet of the first-stage magnetic separator (26) are respectively connected to the inlet of the first-stage combined dense-medium tank (21). The non-magnetic product outlet of the first-stage magnetic separator (26) is the first-stage magnetic tail water product outlet.
5. The fluorite ore separation system according to claim 1, wherein: The second-stage dense-medium separation system (3) includes a second-stage sizing screen (31), a second-stage mixing tank (32), a second-stage dense-medium cyclone (33), a second-stage No. 1 pre-dense-medium screen (351), and a second-stage No. 2 pre-dense-medium screen (341). The -b sized material outlet of the material preparation system (1) is connected to the second-stage sizing screen (31). The over-screen product outlet of the second-stage sizing screen (31) is connected to the inlet of the second-stage mixing tank (32). The outlet of the second-stage mixing tank (32) is connected to the inlet of the second-stage dense-medium cyclone (33). The two outlets of the second-stage dense-medium cyclone (33) are respectively connected to the second-stage No. 1 pre-dense-medium screen (351) and the second-stage No. 2 pre-dense-medium screen (341).
6. The fluorite ore separation system according to claim 5, wherein: The second-stage dense-medium separation system (3) further includes a second-stage No. 1 vibrating dense-medium screen (352) and a second-stage magnetic separator (36). The under-screen product outlet of the secondary first pre-dense-medium screen (351) is connected to the inlet of the secondary mixing tank (32). The over-screen outlet of the secondary first pre-dense-medium screen (351) is connected to the secondary first vibrating dense-medium screen (352). The over-screen product outlet of the secondary first vibrating dense-medium screen (352) is the concentrate product outlet. The under-screen outlet of the secondary first vibrating dense-medium screen (352) is connected to the inlet of the secondary magnetic separator (36). The magnetic product outlet of the secondary magnetic separator (36) is connected to the inlet of the secondary mixing tank (32).
7. The fluorite ore separation system according to claim 5, characterized in that: The secondary dense-medium separation system (3) further includes a secondary second vibrating dense-medium screen (342), a secondary shunt box (343), and a secondary magnetic separator (36); The over-screen outlet of the secondary second pre-dense-medium screen (341) is connected to the inlet of the secondary second vibrating dense-medium screen (342). The over-screen product of the secondary second vibrating dense-medium screen (342) is the first tailing product outlet. The under-screen product outlet of the secondary second pre-dense-medium screen (341) is connected to the inlet of the secondary shunt box (343), or simultaneously connected to the secondary mixing tank (32) and the secondary shunt box (343); The dilute medium outlet of the secondary shunt box (343), the under-screen outlet of the secondary second vibrating dense-medium screen (342) are connected to the inlet of the secondary magnetic separator (36). The combined medium outlet of the secondary shunt box (343), the magnetic product outlet of the secondary magnetic separator (36) are respectively connected to the inlet of the secondary mixing tank (32). The non-magnetic product outlet of the secondary magnetic separator (36) is the secondary magnetic tail water outlet.
8. The fluorite ore separation system according to claim 5, characterized in that: The fine particle concentration system (4) includes a concentrating hydrocyclone (41) and a thickener (42). The primary magnetic tail water outlet, the secondary magnetic tail water outlet, and the under-screen product outlet of the secondary sizing screen (31) are respectively connected to the inlet of the concentrating hydrocyclone (41). The overflow outlet of the concentrating hydrocyclone (41) is connected to the inlet of the thickener (42). The bottom flow outlet of the thickener (42) and the bottom flow outlet of the concentrating hydrocyclone (41) are combined into the fine particle product outlet. The overflow outlet of the thickener (42) is the return water outlet.
9. The fluorite ore separation system according to claim 1, characterized in that: The flotation system (5) includes a mill (51) and a flotation machine (52). The concentrate product outlet of the secondary dense-medium separation system (3), the fine particle product outlet of the fine particle concentration system (4) are respectively connected to the inlet of the mill (51). The product outlet of the mill (51) is connected to the inlet of the flotation machine (52). The foam product generated by the flotation machine (52) is the fine particle concentrate product, and the in-tank product generated is the second tailing product.
10. The fluorite ore separation system according to claim 2, characterized in that: The upper screen mesh size of the first-stage classifier (13) is set to 30 mm - 60 mm, and the lower screen mesh size of the first-stage classifier (13) is set to 6 mm - 12 mm.