CN103240169B - Gravity-flotation combined phosphorite separation process - Google Patents

Gravity-flotation combined phosphorite separation process Download PDF

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Publication number
CN103240169B
CN103240169B CN201310183248.1A CN201310183248A CN103240169B CN 103240169 B CN103240169 B CN 103240169B CN 201310183248 A CN201310183248 A CN 201310183248A CN 103240169 B CN103240169 B CN 103240169B
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technique
separation
concentrate
flotation
mediated
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CN103240169A (en
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孙华峰
汤凯
钱爱军
李海军
王金生
牛国前
刘辉
付银香
李梅
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TANGSHAN RESEARCH INSTITUTE OF CHINA COAL TECHNOLOGY & ENGINEERING GROUP
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TANGSHAN BRANCH OF CHINA COAL RESEARCH INSTITUTE
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Abstract

The invention provides a gravity-flotation combined phosphorite separation process and belongs to the technical field of phosphate ore separation methods. The process includes a dense medium separation process and a flotation process. The dense medium separation process includes: phosphate ore appropriate for gravity separation is smashed into coarse particle materials appropriate for dense medium separation, the dense medium separation process is used for separating and discharging parts of tailings, coarse particles obtained through dense medium separation are ground to particles appropriate for flotation separation to perform the flotation separation, tailings obtained through the flotation separation and the tailings obtained through the dense medium separation are mixed together to be used as tailings to be processed, and concentrate obtained through the flotation separation is final concentrate products. The gravity-flotation combined phosphorite separation process has the advantages of being energy-saving, low in separation cost and high in separation efficiency.

Description

The technique of heavily floating combined sorting phosphorus ore
Technical field
The present invention relates to a kind of technique of heavy floating combined sorting phosphorus ore, belong to rock phosphate in powder method for separating technical field.
Background technology
In recent years, the research and development of state's beneficiated phosphate ore was very fast, from sorting technology with comparatively approaching abroad, technology and experience comparative maturity.According to the optional character of different phosphate ore, adopt at present floatation process and heavymedia separation technique.The floatation process of rock phosphate in powder has advantages of that applicability is strong, the rate of recovery is high and concentrate grade is high, but this technique also exists ore dressing processing cost height and the high shortcoming of energy consumption.For the rock phosphate in powder that is applicable to gravity treatment is main at present, adopt the heavymedia separation that heavy medium cyclone is main screening installation, relatively have advantages of that with floatation process production cost is low and energy consumption is low, but this technique has the low and low shortcoming of concentrate grade of the rate of recovery.
Summary of the invention
The object of the invention is to the deficiency for above-mentioned two kinds of sorting process methods, make full use of the advantage of two kinds of sorting process, the phosphorus ore sorting process that provides the heavymedia separation of a kind of low energy consumption, low processing cost and high-recovery to add flotation combined sorting, i.e. heavymedia separation is to roughly select to add the technique that flotation is selected heavily floating combined sorting phosphorus ore.
Realize foregoing invention object by the following technical solutions:
A technique for heavy floating combined sorting phosphorus ore, is characterized in that, this technique comprises that rock phosphate in powder coarse granule feeds floatation process with heavymedia separation technique and the concentrate of discharging through heavymedia separation technique after levigate, and concrete steps are:
Heavymedia separation technique
A. broken: by raw ore through raw ore coarse crushing, in the Three stage crushing with single closed circuit stage technique of broken, screening and composition in small, broken bits broken, obtain coarse granule raw ore;
B. desliming: coarse granule raw ore is fed to desliming process, the sludge of deviating from feeds concentrated grading technology, the raw ore that obtains 15～1mm after desliming, feeds dense medium separation technique by the raw ore of 15～1mm and carries out sorting, sub-elects the mine tailing of 15～1mm concentrate and 15～1mm;
C. the concentrate that concentrate de-mediated: step b sub-elects obtains qualified medium, rare Jie and concentrate product after a de-mediated and secondary de-mediated, and qualified medium enters qualified medium bucket recycling, and rare Jie feeds magnetic separation process, and concentrate product feeds corase grind technique;
D. the mine tailing ore deposit that mine tailing de-mediated: step b sub-elects obtains qualified medium, rare Jie and product from failing through a de-mediated of mine tailing and the de-mediated of mine tailing secondary, and qualified medium enters qualified medium bucket recycling, and rare Jie feeds magnetic separation process;
E. classification is processed: the qualified medium that magnetic separation sub-elects enters qualified medium bucket recycling, and the sludge of selecting is processed through concentrated classification, and it is levigate that coarse granule sludge enters corase grind, and fine grained sludge feeds grading technology and processes;
Floatation process
This technique need add medicament to carry out
F. two stage grinding: gravity treatment obtains rough mud that concentrate and concentrated classification obtain and consists of the material that obtains being applicable to flotation granularity requirements after two stage grinding technique corase grind, classification, fine grinding, classification;
G. sorting: the thin material obtaining through step f feeds floatation process, described floatation process by roughly selecting, primary cleaning, recleaning, scan technique and form, finally sub-elect flotation concentrate and flotation tailing;
H. essence mine dehydration: flotation concentrate is through concentration technology and filtering technique dehydration, and the water of deviating from recycles as recirculated water, and the product after dehydration is concentrate;
I. tailings dewatering: flotation tailing is through concentration technology and filtering technique dehydration, and the water of deviating from recycles as recirculated water, the product after dehydration is combined into mine tailing with thick product from failing;
J. moisturizing: recirculated water is supplemented according to need of production.
Described coarse granule raw ore is be crushed to-15mm coarse granule raw ore.
The qualified medium that a described de-mediated obtains is controlled the ratio that enters qualified medium bucket and magnetic separation process by shunting process, keeping the content of sludge in qualified medium bucket is 30%.
In described floatation process, institute's adding medicine is required collecting agent agent, inhibitor and foaming agent of phosphate rock floating.
The described material that enters floatation process is through the concentrate of dense medium separation levigate material.
Described desliming, close the bucket that is situated between, secondary de-mediated technique fills into recirculated water in time.
Described closing in the bucket that is situated between is added with the medium recycling, and according to need of production, adds new medium.
Adopt technique scheme, compared with prior art, the present invention is first crushed to the rock phosphate in powder that is applicable to gravity treatment the coarse granule material that is applicable to heavymedia separation, with heavymedia separation technique sorting discharge section mine tailing, then heavymedia separation obtains coarse granule concentrate and is ground into the granularity that is applicable to flotation, the mine tailing that the mine tailing floatingly selecting and heavymedia separation are gone out mixes as mine tailing and processes, and the concentrate floatingly selecting is final concentrate product.The relative phosphorus ore sorting of this technique energy consumption is low, dressing expenses is low, the high and efficiency of separation advantages of higher of concentrate taste.
Accompanying drawing explanation
Fig. 1 is process chart of the present invention.
Number in the figure: raw ore 1, raw ore coarse crushing 2, in broken 3, screening 4, in small, broken bits 5, the water 6 that disappears, recirculated water 7, desliming 8,9, de-mediated 10 of dense medium separation, a de-mediated 11 of mine tailing, secondary de-mediated 12, mine tailing secondary de-mediated 14, shunting 13, corase grind 15, magnetic separation 16, corase grind classification 17, concentrated classification 18, fine grinding 19, fine grinding classification 20, roughing flotation 21, primary cleaning 22, scans 23, recleaning 24, two selected 24, concentrated 25, mine tailing concentrates 26, and new medium 27 closes the bucket 28 that is situated between, filtration 29, tailing filtration 30, concentrate 31, mine tailing 32.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described further.
Disclosed by the invention is the technique of heavily floating combined sorting phosphorus ore, first this technique be first crushed to by the rock phosphate in powder that is applicable to gravity treatment the coarse granule material that is applicable to heavymedia separation, with heavymedia separation technique sorting discharge section mine tailing, then heavymedia separation obtains coarse granule concentrate and is ground into the granularity that is applicable to flotation, the mine tailing that the mine tailing floatingly selecting and heavymedia separation are gone out mixes as mine tailing and processes, and the concentrate floatingly selecting is final concentrate product.Specifically see accompanying drawing 1, this technique is divided into dense medium separation technique and floatation process.
Embodiment
Dense medium separation:
By the raw ore of 300mm 1 through by coarse crushing 2, in broken 3, screening 4 and in small, broken bits 5 be crushed to-15mm of the Three stage crushing with single closed circuit stage technique coarse granule raw ores that form.
After fragmentation-15mm coarse granule raw ore feeds desliming 8, deviate from-1mm sludge feeds concentrated classification 18, the 15～1mm raw ore after desliming feeds dense medium separation 9 sortings, sub-elects 15～1mm concentrate and 15～1mm mine tailing.
3. 15～1mm the concentrate sub-electing obtains qualified medium, rare Jie and 15～1mm concentrate product through a de-mediated 10 and mine tailing secondary de-mediated 12 twice de-mediated, qualified medium enters qualified medium bucket recycling, rare Jie feeds magnetic separation 16,15～1mm concentrate product and feeds corase grind 15.
4. 15～1mm the mine tailing sub-electing can obtain qualified medium, rare Jie and 15～1mm product from failing through a de-mediated 11 of mine tailing and mine tailing secondary de-mediated 14, and qualified medium enters qualified medium bucket recycling, and rare Jie feeds magnetic separation 16.
5. the qualified medium that a de-mediated 11 obtains is by the ratio of shunting 13 controls and enter qualified medium bucket and magnetic separation 16, and keeping the content of sludge in qualified medium bucket is 30%.
6. the qualified medium that magnetic separation 16 sub-elects enters qualified medium bucket recycling, and the sludge of selecting is processed through concentrated classification 18, and it is levigate that coarse granule sludge enters corase grind 15, and fine grained sludge feeds fine grinding classification 20 and processes.
Gravity treatment obtain rough mud that 15～1mm concentrate and concentrated classification 18 obtain by roughly grinding 15, corase grind classification 17, fine grinding 19, fine grinding classification 20 form obtain-0.074mm after two stage grindings account for 94%material.
Floatation process: need the collecting agent agent, inhibitor and the foaming agent that add phosphate rock floating required in floatation process, select the type of collecting agent agent, inhibitor and foaming agent in floatation process according to the mad character of chatting of phosphorus ore and need of production.
8.-0.074mm is accounted for to 94% thin material and feed flotation, thin material feeds flotation, flotation by roughing flotation 21, primary cleaning 22, recleaning 24, scan 23 and form, finally sub-elect flotation concentrate and flotation tailing.
9. flotation concentrate dewaters with filtration 29 through concentrated 25, and the water of deviating from recycles as recirculated water, and the product after dehydration is concentrate 31.
10. flotation tailing is through mine tailing concentrated 26 and tailing filtration 30 dehydrations, and the water of deviating from recycles as recirculated water, and the product after dehydration is mine tailing 32 with thick product from failing.
11. clear water 6 supplement recirculated water 7 according to need of production; Recirculated water 7 feeds as required desliming 8, closes be situated between bucket 28, secondary de-mediated 12, mine tailing secondary de-mediated 14.
12, toward closing the bucket 28 that is situated between, add new medium 27 as required, described new medium is fine grained Fe 3o 4.
Equipment used in the present invention is and revolves the common apparatus that phosphorus ore is used.
Above-described embodiment has only been expressed one embodiment of the present invention, but can not therefore be interpreted as limitation of the scope of the invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.

Claims (5)

1. a technique for heavily floating combined sorting phosphorus ore, is characterized in that, this technique comprises that rock phosphate in powder coarse granule feeds floatation process by heavymedia separation technique with after the concentrate of heavymedia separation technique discharge is levigate, and concrete steps are:
Heavymedia separation technique
A. broken: by raw ore through raw ore coarse crushing, in the Three stage crushing with single closed circuit stage technique of broken, screening and composition in small, broken bits broken, obtain coarse granule raw ore, described coarse granule raw ore is be crushed to-15mm coarse granule raw ore;
B. desliming: coarse granule raw ore is fed to desliming process, the sludge of deviating from feeds concentrated grading technology, after desliming, obtain the raw ore of 15～1mm, the raw ore of 15～1mm is fed to dense medium separation technique and carry out sorting, sub-elect the mine tailing of 15～1mm concentrate and 15～1mm;
C. the concentrate that concentrate de-mediated: step b sub-elects obtains qualified medium, rare Jie and concentrate product after a de-mediated and secondary de-mediated, and qualified medium enters qualified medium bucket recycling, and rare Jie feeds magnetic separation process, and concentrate product feeds corase grind technique;
D. the mine tailing that mine tailing de-mediated: step b sub-elects obtains qualified medium, rare Jie and product from failing through a de-mediated of mine tailing and the de-mediated of mine tailing secondary, and qualified medium enters qualified medium bucket recycling, and rare Jie feeds magnetic separation process;
E. classification is processed: the qualified medium that magnetic separation sub-elects enters qualified medium bucket recycling, and the sludge of selecting is processed through concentrated classification, and it is levigate that coarse granule sludge enters corase grind, and fine grained sludge feeds grading technology and processes;
Floatation process
This technique need add medicament to carry out
F. two stage grinding: gravity treatment obtains rough mud that concentrate and concentrated classification obtain and consists of the material that obtains being applicable to flotation granularity requirements after two stage grinding technique corase grind, corase grind classification, fine grinding, fine grinding classification;
G. sorting: the thin material obtaining through step f feeds floatation process, described floatation process by roughly selecting, primary cleaning, recleaning, scan technique and form, finally sub-elect flotation concentrate and flotation tailing;
H. essence mine dehydration: flotation concentrate is through concentration technology and filtering technique dehydration, and the water of deviating from recycles as recirculated water, and the product after dehydration is concentrate;
I. tailings dewatering: flotation tailing is through concentration technology and filtering technique dehydration, and the water of deviating from recycles as recirculated water, the product after dehydration is combined into mine tailing with thick product from failing;
J. moisturizing: recirculated water is supplemented according to need of production.
2. the technique of heavy floating combined sorting phosphorus ore according to claim 1, is characterized in that, in described floatation process, institute's adding medicine is the required collecting agent of phosphate rock floating, inhibitor and foaming agent.
3. the technique of heavy floating combined sorting phosphorus ore according to claim 1, is characterized in that, the material that enters floatation process is through the concentrate of dense medium separation levigate material.
4. the technique of heavy floating combined sorting phosphorus ore according to claim 1, is characterized in that, described desliming, qualified medium bucket, secondary de-mediated technique fill into recirculated water in time.
5. the technique of heavy floating combined sorting phosphorus ore according to claim 1, is characterized in that, in described qualified medium bucket, is added with the medium recycling, and according to need of production, adds new medium.
CN201310183248.1A 2013-05-17 2013-05-17 Gravity-flotation combined phosphorite separation process Expired - Fee Related CN103240169B (en)

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103480483B (en) * 2013-10-11 2015-08-19 武汉工程大学 A kind of phosphorus ore heavymedia separation and direct reverse flotation process integration
CN104722390B (en) * 2015-03-02 2019-01-04 中国矿业大学 Coal floats combined sorting technique again in a kind of coking
CN105880032B (en) * 2016-05-09 2019-04-09 武汉科技大学 A kind of mid-low grade collophanite ore floats combined sorting method again
CN107321472A (en) * 2017-07-06 2017-11-07 中国矿业大学(北京) A kind of crystalline flake graphite method for separating based on pneumatic separation and flotation
CN108906312A (en) * 2018-07-02 2018-11-30 安徽马钢罗河矿业有限责任公司 A kind of beneficiation method for diversification raw ore

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0504210A (en) * 2005-09-29 2006-02-14 Bunge Fertilizantes Sa process for obtaining apatite concentrates
CN1806931A (en) * 2006-01-27 2006-07-26 湖北宜化大江复合肥有限公司 Mineral dressing method of mid-low grade collophane
BRPI0803212A2 (en) * 2008-04-08 2009-11-24 Fertilizantes Fosfatados S A F apatite ore concentration process
CN102671758A (en) * 2012-05-16 2012-09-19 云南三明鑫疆矿业有限公司 Direct and reverse flotation desliming process of collophanite
CN102716799A (en) * 2012-06-14 2012-10-10 昆明川金诺化工股份有限公司 Process method for removing phosphate impurities by combining gravity, centrifugal force and flotation
CN103071580A (en) * 2013-01-30 2013-05-01 昆明理工大学 Method for removing magnesium from phosphate ore

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0504210A (en) * 2005-09-29 2006-02-14 Bunge Fertilizantes Sa process for obtaining apatite concentrates
CN1806931A (en) * 2006-01-27 2006-07-26 湖北宜化大江复合肥有限公司 Mineral dressing method of mid-low grade collophane
BRPI0803212A2 (en) * 2008-04-08 2009-11-24 Fertilizantes Fosfatados S A F apatite ore concentration process
CN102671758A (en) * 2012-05-16 2012-09-19 云南三明鑫疆矿业有限公司 Direct and reverse flotation desliming process of collophanite
CN102716799A (en) * 2012-06-14 2012-10-10 昆明川金诺化工股份有限公司 Process method for removing phosphate impurities by combining gravity, centrifugal force and flotation
CN103071580A (en) * 2013-01-30 2013-05-01 昆明理工大学 Method for removing magnesium from phosphate ore

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