CN1799699A - Process for separating phosphate ore by three products heavy medium cyclone - Google Patents
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- CN1799699A CN1799699A CN 200610012327 CN200610012327A CN1799699A CN 1799699 A CN1799699 A CN 1799699A CN 200610012327 CN200610012327 CN 200610012327 CN 200610012327 A CN200610012327 A CN 200610012327A CN 1799699 A CN1799699 A CN 1799699A
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Abstract
The invention relates to a method for selecting phosphorus ore via three-product dense-medium cyclone. Wherein, the mounting inclined angle of first cylinder cyclone of said three-product dense-medium cyclone in feeding without pressure is 25-50Deg. C; the mounting inclined angle of second cylinder cone cyclone in feeding with pressure is 5-90Deg. C. The process of sorted phosphorus ore comprises: the raw mineral of phosphorus ore via charging inlet is fed without pressure into three-product dense-medium cyclone, and the qualified medium via the qualified medium pump 13 is fed into said three-product dense-medium cyclone. The selected finished ore, middle ore and tailings are fed to the finished ore outlet, middle ore outlet and tailing outlet of three-product dense-medium cyclone, then the outlet finished ore, middle ore and tailings via the process of dehydration can be made into final qualified finished ore, middle ore and tailing. The invention has simple process while it can effectively select the phosphorus and other non-magnetic mineral with the selection density more than 2.4kg/L. Therefore, it has significant economic benefit.
Description
Technical field
The present invention relates to a kind of technology of separating phosphate ore, specifically use the technology of the separating phosphate ore by three products heavy medium cyclone of unpressurized feeding, belong to the sorting technology field.
Background technology
China's flotation of phosphate rock research originated in 1950's end, and built up and handled in 1 year of going into operation large deposited rotten phosphorite flotation mill---the Jiangsu silk screen flotation of phosphate rock factory of raw ore 1,200,000 t in 1958.After this medium-sized magma lithotype apatite flotation mill that built up and handled in the year of going into operation raw ore 300,000 t at Hebei Ma Ying phosphorus ore in 1976.These two are selected building up of factory to indicate that China has grasped the technique of preparing that easily selects phosphorus ore.At present, what separating phosphate ore generally adopted is flotation, comprising direct flotation, reverse flotation.Other method for separating also is in conceptual phase, seldom is applied to produce.
Three products heavy medium cyclone has been widely used in the branch of coal and has chosen.Wherein, typical example is a Chinese patent application 02158903.8 disclosed " a kind of heavy medium cyclone device; coal separation system and coal preparation method ", and this is dense medium coal cleaning process and equipment that a kind of large-scale pressureless fed three-product dense-medium cyclone is a main separation equipment.The used heavy-media suspension density of the above-mentioned three products heavy medium cyclone that adopts in coal production is many below 1.6kg/L, and therefore this three products heavy medium cyclone can not carry out effective sorting to the phosphorus ore of separating density more than 2.8kg/L.
Can sub-elect high-grade phosphorus ore by the low-grade rock phosphate in powder of centering in order to explore, a large amount of work had once been done as far back as the seventies in Yichang, but mainly was to be confined on the single method for floating.Organize comparison system and the comprehensively research of flotation of phosphate rock the Ministry of Chemical Industry in 1985, except flotation, also had photoelectric separation, chemical mineral processing and heavymedia separation.The technological process of using photoelectric separation and chemical mineral processing separating phosphate ore is not only complicated, and the efficiency of separation is low; The ore grinding that the flotation of phosphorus ore requires is very thin, the floating agent consumption is big, the water purification system complexity, and the sorting process index is undesirable.1986 " experimental study of dense medium separation of Yichang phosphate ores combined process flow " classifies the enforcement period of the seventh five-year plan brainstorm project as, begins one's study to use the heavymedia separation combined process flow, and builds up a phosphorus ore dense media preparation factory in nineteen ninety in flowers and fruits tree ore deposit.Because the dense medium separation technology was immature at that time, after a period of time has been moved in the ore dressing plant, just can't produce again, and separating effect is also undesirable.
At present, along with China's dense medium separation technology is progressively used maturely in the coal separation industry, study a kind of application dense medium separation technology and come separating phosphate ore, the new production process of advanced technology maturation has become possibility.
Summary of the invention
Technical problem to be solved by this invention is the many defectives at background technology, at the high characteristics of phosphorus ore separating density, provide a kind of with the capital equipment of the wide pressureless fed three-product dense-medium cyclone of using of coal industry as separating phosphate ore, and improve its setting angle and structural parameters when being used for the branch coal separation, the first cylindrical section shape cyclone of the unpressurized feeding by strengthening three products heavy medium cyclone and have the conical cyclone mounted angle of second cylindrical section of pressing feed to improve practical separation density with difference between the density of suspending liquid, thus reach the purpose of low-density suspension sorting high density mineral.Realize technology to the separating phosphate ore by three products heavy medium cyclone of phosphorus ore sorting.
Solve the problems of the technologies described above by the following technical solutions: a kind of technology with separating phosphate ore by three products heavy medium cyclone, comprise pressureless fed three-product dense-medium cyclone, concentrate de-mediated sieve bend, chats de-mediated sieve bend, mine tailing de-mediated sieve bend, concentrate de-mediated vibratory sieve, chats de-mediated vibratory sieve, current divider box, mine tailing de-mediated vibratory sieve, the concentrate magnetic separator, middle mine tailing magnetic separator, the concentrate thickener, middle mine tailing thickener, qualification medium pump, the qualified medium bucket, the concentrate sedimentation basin, circulating water pool, middle mine tailing sedimentation basin, water circulating pump, the mounted angle of the first cylindrical section shape cyclone of three products heavy medium cyclone unpressurized feeding is 25 °～50 °, it is 5 °～90 ° that the mounted angle of the conical cyclone of second cylindrical section of pressing feed is arranged, technology with its separating phosphate ore is: the raw ore of phosphorus ore feeds pressureless fed three-product dense-medium cyclone by material inlet, qualified medium is fed by pressureless fed three-product dense-medium cyclone with qualification medium pump, the concentrate of rock phosphate in powder through obtaining after the sorting, chats and mine tailing are successively by the concentrate mouth of pressureless fed three-product dense-medium cyclone, middle mine mouth and mine tailing mouth are discharged the concentrate that comes out, chats and mine tailing obtain final qualified concentrate containing after dewatering through de-mediated matter, chats and mine tailing.
Because effective separating density of phosphorus ore is about 2.8kg/L.At 1.25～2.2kg/L,, just cannot carry out effective sorting with iron powder configuration density of suspending liquid scope to phosphorus ore if pressureless fed three-product dense-medium cyclone still adopts mounting means and structural parameters in the coal separation in the past.Adopt the first cylindrical section shape cyclone that strengthens the unpressurized feeding of three products heavy medium cyclone in the past and the conical cyclone mounted angle of second cylindrical section of pressing feed is arranged in order to solve technical problem the present invention that low-density realizes that the high density branch is chosen.Adopt technique scheme, compared with prior art, the present invention carries out effective sorting to the phosphorus ore of separating density more than 2.8kg/L.Have that production technology is simple, production cost is low, environmental pollution is little, gained concentrate product grade advantages of higher.Its application prospect is very extensive.
Description of drawings
Fig. 1 is the pressureless fed three-product dense-medium cyclone overall structure schematic diagram that is used for the phosphorus ore sorting.
Among the figure, heavy-media suspension inlet 1, one cylindrical section shape cyclone 2, the conical cyclone 4 of raw ore feeding mouth 3, two cylindrical sections, concentrate outlet 5, chats outlet 6, mine tailing outlet 7.
Fig. 2 is the new technological flow figure that unit presses the feed separating phosphate ore by three products heavy medium cyclone.
Among the figure, pressureless fed three-product dense-medium cyclone 1, concentrate de-mediated sieve bend 2, chats de-mediated sieve bend 3, mine tailing de-mediated sieve bend 4, concentrate de-mediated vibratory sieve 5, chats de-mediated vibratory sieve 6, current divider box 7, mine tailing de-mediated vibratory sieve 8, concentrate magnetic separator 9, middle mine tailing magnetic separator 10, concentrate thickener 11, middle mine tailing thickener 12, qualification medium pump 13, qualified medium bucket 14, concentrate sedimentation basin 15, circulating water pool 16, middle mine tailing sedimentation basin 17, water circulating pump 18.
The specific embodiment
The present invention will be further described below in conjunction with the drawings and the specific embodiments.
Invention thought of the present invention is the three products heavy medium cyclone that utilizes coal separation to use, by to the improvement of pressureless fed three-product dense-medium cyclone mounting means and structural parameters and reasonably dense media reclaim technology and realize sorting phosphorus ore.Use pressureless fed three-product dense-medium cyclone rock phosphate in powder and separating density are carried out sorting at other non magnetic ores greater than 2.4kg/L.
The character of phosphorus raw ore is described with following table:
Table 1
| Density 2.4kg/L | Productive rate % | Grade % | Distributive law % | |||
| Account for bulk sample | Accumulative total | P2O5 | MgO | P2O5 | MgO | |
| ＞2.94 | 52.76 | 52.76 | 35.94 | 0.57 | 80.48 | 8.37 |
| 2.94-2.89 | 7.7 | 60.46 | 30.98 | 1.6 | 10.13 | 3.43 |
| 2.89-2.85 | 6.68 | 67.14 | 17.6 | 8.6 | 4.99 | 17.86 |
| 2.85-2.80 | 4.35 | 71.49 | 5.09 | 17.15 | 0.94 | 20.77 |
| 2.80-2.75 | 9.32 | 80.81 | 3.45 | 17.49 | 1.34 | 45.39 |
| 2.75-2.70 | 2.57 | 83.38 | 7.66 | 1.57 | 0.84 | 1.12 |
| 2.70-2.60 | 10.29 | 93.67 | 1.69 | 0.69 | 0.74 | 1.98 |
| ＜2.60 | 6.33 | 100 | 1.94 | 0.61 | 0.52 | 1.08 |
| Add up to | 100 | 23.56 | 3.59 | 100 | 100 | |
Concrete sorting process:
With density in the qualified medium bucket 14 is that suspension about 2.2kg/L feeds pressureless fed three-product dense-medium cyclone 1 with qualification medium pump 13.When pressure feeds pressureless fed three-product dense-medium cyclone 1 with granularity at the phosphorus ore that-15mm as above shows character during to 0.35MPa.The concentrate that is sub-elected by the concentrate mouth passes through on concentrate de-mediated sieve bend 2 sieves successively, concentrate de-mediated vibratory sieve 5 sieves and obtains the concentrate product.The chats that is sub-elected by middle mine mouth passes through on chats de-mediated sieve bend 3 sieves successively, chats de-mediated vibratory sieve 6 sieves and obtains middle mineral products.The mine tailing that is sub-elected by the mine tailing mouth passes through on mine tailing de-mediated sieve bend 4 sieves successively, mine tailing de-mediated vibratory sieve 8 sieves and obtains product from failing.Qualified medium under concentrate de-mediated sieve bend 2 sieves enters qualified medium bucket 14 and utilizes.Qualified medium under concentrate de-mediated vibratory sieve 5 sieves enters qualified medium bucket 14 and utilizes.Rare medium under concentrate de-mediated vibratory sieve 5 sieves enters concentrate magnetic separator 9, the magnetic iron ore that concentrate magnetic separator 9 is selected enters qualified medium bucket 14 and utilizes, the mine tailing of selecting feeds concentrate thickener 11, the underflow of concentrate thickener 11 is to concentrate sedimentation basin 15, and the sediment that concentrate sedimentation basin 15 is settled out is a concentrate.The water that concentrate thickener 11 and concentrate sedimentation basin 15 come out feeds circulating water pool 16.Qualified medium under chats de-mediated sieve bend 2 sieves enters qualified medium bucket 14 and utilizes.Qualified medium under chats de-mediated vibratory sieve 6 sieves enters qualified medium bucket 14 and utilizes.Mine tailing magnetic separator 10 during rare medium under chats de-mediated vibratory sieve 6 sieves enters.The magnetic iron ore that middle mine tailing magnetic separator 10 is selected enters qualified medium bucket 14 and utilizes, and the mine tailing of selecting feeds middle mine tailing thickener 12, and the underflow of middle mine tailing thickener 12 is to middle mine tailing sedimentation basin 17, and the sediment that middle mine tailing sedimentation basin 17 is settled out is a chats.The water that middle mine tailing thickener 12 and middle mine tailing sedimentation basin 17 come out feeds circulating water pool 16.Mine tailing de-mediated sieve bend 4 sieve qualified medium is down got back to qualified medium bucket 14 through current divider box 7 parts and is utilized, and mine tailing magnetic separator 10 a part of nonmagnetics of dishing out during a part feeds is with the nonmagnetics content in the interior suspension of maintenance qualified medium bucket 14.Qualified medium under mine tailing de-mediated vibratory sieve 8 sieves enters qualified medium bucket 14 and utilizes.Mine tailing magnetic separator 10 during rare medium under mine tailing de-mediated vibratory sieve 8 sieves enters.Recirculated water in the circulating water pool 16 is sprayed water with de-mediated by rare Jie's section that water circulating pump 18 is sprayed onto concentrate de-mediated vibratory sieve 2, chats de-mediated vibratory sieve 6,8 three sieves of mine tailing de-mediated vibratory sieve.Adding rare Jie's section that water is sprayed onto concentrate de-mediated vibratory sieve 2, chats de-mediated vibratory sieve 6,8 three sieves of mine tailing de-mediated vibratory sieve sprays water with de-mediated.
The smart product grade of the phosphorus that sub-elects by above-mentioned flow process is 29.8～31.70, and the grade of mineral products is about 12.5～15.8 in the phosphorus, and phosphorus is that the grade of mineral products is about 8.3～10.5.The phosphorus concentrate product that sub-elects has improved 6～8% than tcrude ore grade, satisfies the requirement of market to product fully.
Claims (4)
1, a kind of technology with separating phosphate ore by three products heavy medium cyclone, comprise pressureless fed three-product dense-medium cyclone, concentrate de-mediated sieve bend, chats de-mediated sieve bend, mine tailing de-mediated sieve bend, concentrate de-mediated vibratory sieve, chats de-mediated vibratory sieve, current divider box, mine tailing de-mediated vibratory sieve, the concentrate magnetic separator, middle mine tailing magnetic separator, the concentrate thickener, middle mine tailing thickener, qualification medium pump, the qualified medium bucket, the concentrate sedimentation basin, circulating water pool, middle mine tailing sedimentation basin, water circulating pump, it is characterized in that, the mounted angle of the first cylindrical section shape cyclone of three products heavy medium cyclone unpressurized feeding is 25 °～50 °, it is 5 °～90 ° that the mounted angle of the conical cyclone of second cylindrical section of pressing feed is arranged, technology with its separating phosphate ore is: the raw ore of phosphorus ore feeds pressureless fed three-product dense-medium cyclone by material inlet, qualified medium is fed by pressureless fed three-product dense-medium cyclone with qualification medium pump, the concentrate of rock phosphate in powder through obtaining after the sorting, chats and mine tailing are successively by the concentrate mouth of pressureless fed three-product dense-medium cyclone, middle mine mouth and mine tailing mouth are discharged the concentrate that comes out, chats and mine tailing obtain final qualified concentrate containing after dewatering through de-mediated matter, chats and mine tailing.
2, the technology with separating phosphate ore by three products heavy medium cyclone according to claim 1 is characterized in that, the concentrate that described concentrate mouth sub-elects sieves through concentrate de-mediated sieve bend successively and goes up, concentrate de-mediated vibratory sieve obtains the concentrate product on sieving.
3, the technology with separating phosphate ore by three products heavy medium cyclone according to claim 1 is characterized in that, the described chats that is sub-elected by middle mine mouth sieves through chats de-mediated sieve bend successively and goes up, chats de-mediated vibratory sieve obtains middle mineral products on sieving.
4, the technology with separating phosphate ore by three products heavy medium cyclone according to claim 1 is characterized in that, the described mine tailing that is sub-elected by the mine tailing mouth sieves through mine tailing de-mediated sieve bend successively and goes up, mine tailing de-mediated vibratory sieve obtains product from failing on sieving.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101011679B (en) * | 2006-12-05 | 2010-10-06 | 唐山易通科技开发有限公司 | Simplified coal slurry dense-medium coal separation process |
| CN101455992B (en) * | 2008-12-10 | 2012-05-02 | 重庆南桐矿业有限责任公司南桐选煤厂 | Power coal and sulfur concentrate sorting method and special device thereof |
| CN102489384A (en) * | 2011-12-07 | 2012-06-13 | 河南焦煤能源有限公司 | Integrally designed two-product dense medium separation process |
| CN104785360A (en) * | 2015-04-24 | 2015-07-22 | 中蓝连海设计研究院 | Dense medium separation method for recycling coarse fraction apatite from magnetite tailings |
| CN105750076A (en) * | 2014-03-10 | 2016-07-13 | 衢州市易凡设计有限公司 | Washing separation device for high-ash, high-clay and high-gangue coal |
| CN106964483A (en) * | 2017-04-28 | 2017-07-21 | 中国矿业大学 | A kind of unpressurized feeding dense medium cyclone coal separation process autocontrol method and system |
| CN107520042A (en) * | 2017-09-15 | 2017-12-29 | 威海市海王旋流器有限公司 | A kind of separation system and sorting process of spodumene raw ore dense media |
| CN107774438A (en) * | 2017-12-12 | 2018-03-09 | 安徽华星选矿科技有限公司 | A kind of heavymedia separation method of barite |
| CN109499746A (en) * | 2018-12-05 | 2019-03-22 | 金石资源集团股份有限公司 | Three product fluorite lump ore production systems of one kind and technique |
| CN111298959A (en) * | 2020-03-04 | 2020-06-19 | 中国矿业大学 | Process for separating oil shale through pressureless three-product heavy medium |
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2006
- 2006-01-13 CN CN 200610012327 patent/CN1799699A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101011679B (en) * | 2006-12-05 | 2010-10-06 | 唐山易通科技开发有限公司 | Simplified coal slurry dense-medium coal separation process |
| CN101455992B (en) * | 2008-12-10 | 2012-05-02 | 重庆南桐矿业有限责任公司南桐选煤厂 | Power coal and sulfur concentrate sorting method and special device thereof |
| CN102489384A (en) * | 2011-12-07 | 2012-06-13 | 河南焦煤能源有限公司 | Integrally designed two-product dense medium separation process |
| CN105750076A (en) * | 2014-03-10 | 2016-07-13 | 衢州市易凡设计有限公司 | Washing separation device for high-ash, high-clay and high-gangue coal |
| CN104785360A (en) * | 2015-04-24 | 2015-07-22 | 中蓝连海设计研究院 | Dense medium separation method for recycling coarse fraction apatite from magnetite tailings |
| CN106964483A (en) * | 2017-04-28 | 2017-07-21 | 中国矿业大学 | A kind of unpressurized feeding dense medium cyclone coal separation process autocontrol method and system |
| CN106964483B (en) * | 2017-04-28 | 2019-02-26 | 中国矿业大学 | A kind of unpressurized feeding dense medium cyclone coal separation process autocontrol method and system |
| CN107520042A (en) * | 2017-09-15 | 2017-12-29 | 威海市海王旋流器有限公司 | A kind of separation system and sorting process of spodumene raw ore dense media |
| CN107520042B (en) * | 2017-09-15 | 2024-02-27 | 威海市海王旋流器有限公司 | Sorting system and sorting process for spodumene raw ore heavy media |
| CN107774438A (en) * | 2017-12-12 | 2018-03-09 | 安徽华星选矿科技有限公司 | A kind of heavymedia separation method of barite |
| CN109499746A (en) * | 2018-12-05 | 2019-03-22 | 金石资源集团股份有限公司 | Three product fluorite lump ore production systems of one kind and technique |
| CN111298959A (en) * | 2020-03-04 | 2020-06-19 | 中国矿业大学 | Process for separating oil shale through pressureless three-product heavy medium |
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