CN102441498B - Phosphorite double-reverse flotation process - Google Patents
Phosphorite double-reverse flotation process Download PDFInfo
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Abstract
The invention relates to phosphorite double-reverse flotation process, which comprises reverse flotation de-magging, desliming and pulp mixing and reverse flotation desilicication. The phosphorite double-reverse flotation process is characterized in that ore pulp after reverse flotation de-magging realizes desliming, the concentration of a desliming bottom flow and the content of fine particles are controlled, and reverse flotation desilicication is realized after pulp mixing of the bottom flow. The phosphorite double-reverse flotation process can eliminate or mostly remove interference of slime to reverse flotation desilicication, increases flotation efficiency, more importantly, improves fluidity of flotation foam, and lead phosphorite double-reverse flotation to be engineered.
Description
Technical field
The present invention relates to a kind of floatation process of phosphorus ore, especially relate to the two reverse floatation process of a kind of phosphorus ore.
Background technology
Flotation is to handle the topmost method of phosphate rock resource, and for silicon calcium quality ore stone, in order to improve the quality of concentrate, introducing reverse flotation gangue mineral (carbonate mineral or silicate mineral) is to compare effective ways at present.Reverse flotation work is to carry out in the process of " but floating few many ", can not only guarantee the selectivity that floatation process is higher like this, and floatation process control and stable easily, reduces the mechanical entrainment of floatation process and the difficulty of flotation froth conveying.This be single reverse flotation or two reverse flotation with direct flotation or just-one of significant advantage that the reverse flotation flowsheet comparison is had.The phosphorus ore reverse flotation can carry out at normal temperatures to temperature-insensitive.Two reverse flotations are to handle relatively effective method of China's appositional pattern silico-calcium matter (or silico-calcium matter) phosphorus ore.
The two reverse flotations of phosphorus ore are to be constituted jointly by reverse flotation de-magging (carbonate mineral) and Counterfloatating desiliconization (silicate mineral), after ore is ground to qualified granularity, under solutions of weak acidity (pH=5 ~ 6), with carbonate minerals such as fatty acid soaps class collecting agent emersion dolomites, add silicoides such as cation-collecting agent emersion quartz, calcedony in the groove in the ore pulp, finally obtain high-quality phosphorus concentrate.Wherein the cationic amines collecting agent that generally uses of Counterfloatating desiliconization is to sludge sensitivity, RNH
3 +Easily absorption sludge particle surface causes the collecting agent consumption to increase, and regular meeting produces a large amount of viscous foam, the two reverse flotation industrialization of restriction phosphorus ore.
At present, many flotation researchers carry out the research of a large amount of research, particularly floating agent to the phosphorus ore Counterfloatating desiliconization, and the dispersant of collecting agent, froth modifier and sludge, flocculant, inhibitor etc. all get along with efficiently.
The application study [J] of a kind of surface reactive material of people such as Liu Xin in collophane desiliconization reverse flotation, chemical industry mineral and processing, 2009,12.Adopting industrial fusel Zc and ether amine collector Y10 combination medicament as floating silicon collecting agent certain collophane to be carried out two reverse floatation process tests, is P at head grade
2O
526.22%, MgO1.60%, SiO
2, can obtain P at 22.33% o'clock
2O
530.14%, the concentrate index of MgO0.61%, the rate of recovery 92.99%.Surface tension and the feeler that connects test find that the adding of industrial fusel Zc can improve the selectivity of Y10.
People's such as Ceng Xiaobo collophane cation reverse flotation foam behavior study on regulation [J], chemical industry mineral and processing, 2008,01.Many and the difficult difficult problem that dissipates at cation-collecting agent reverse flotation collophane foam, this research is by adding inorganic foamed adjustment agent CA in flotation pulp, and study on regulation is carried out in behavior to the flotation three phase boundary, and the froth breaking mechanism of CA has been carried out desk study.
Low grade collophanite beneficiation method during CN 1806931 announces, it comprises that heavymedia separation carries the smart tail of throwing, silicon falls in two reverse flotation de-maggings.
CN 101972710A disclose a kind of in two reverse floatation process of low-grade phosphorite, behind phosphorus ore reverse flotation de-magging, the siliceous gangue mineral and the thin mud that add dispersant and a spot of collecting agent flotation particulate earlier, at the siliceous gangue mineral that add collecting agent and non-utmost point oil flotation coarse grain, this technology can increase the collecting of siliceous gangue mineral, improves the efficiency of separation, reduce Counterfloatating desiliconization collecting agent consumption.Bibliographical information is arranged behind phosphorus ore reverse flotation de-magging, can effectively avoid the influence of sludge Counterfloatating desiliconization with the technology of selective flocculation.
The two reverse floatation process of above-mentioned phosphorus ore can partly weaken the influence of sludge to Counterfloatating desiliconization, can improve the efficiency of separation to a certain extent, but above-mentioned technology is only effective to the ore of specific ore or easy choosing, for the ore of difficulty choosing, because can not be fully or the adverse effect of most of elimination sludge, in the process of flotation, still exist flotation froth to run groove, viscosity is big, be difficult for phenomenons such as shattered to pieces, cause the flotation froth difficulty of transportation, seriously disturb normal flotation, be difficult to engineering practice.
Summary of the invention
Technical problem to be solved by this invention is at the deficiencies in the prior art, and the two reverse floatation process of a kind of phosphorus ore that a kind of technology is more reasonable, the elimination sludge influences Counterfloatating desiliconization are provided.
Technical problem to be solved by this invention is to come to realize by following technical scheme.The present invention is the two reverse floatation process of a kind of phosphorus ore, is characterized in that its step is as follows:
(1) reverse flotation de-magging: after the granularity of phosphorus ore through being ground to the flotation requirement, adding the reverse flotation de-magging and adjust agent 5 ~ 20kg/t raw ore and de-magging collector 0.8 ~ 3.5kg/t raw ore, carry out magnesium and roughly select operation, is the de-magging rough concentrate in the magnesium initial separatory cell; Magnesium is roughly selected foam and is added after the de-magging be not higher than 3 kg/t raw ores adjusts agent, carries out magnesium and is elected to be industry again, and magnesium selects and is the de-magging chats in the groove, and the de-magging chats returns magnesium and roughly selects, and it is the carbonate mine tailing that magnesium selects foam again;
(2) de-magging rough concentrate desliming, size mixing: the de-magging rough concentrate enters the desliming device will be deviate from less than the particle of 10-38 micron, and the sand setting mass concentration after the desliming is 30 ~ 70%, be not more than 25% less than the granule content of 10-38 micron; Sand setting enters tank diameter, and the adding desiliconization is carried out high concentration pulping after adjusting agent 0.5 ~ 2.5kg/t raw ore, desiliconization collecting agent 50 ~ 400kg/t raw ore and non-polar oil 20 ~ 100kg/t raw ore, and the time of sizing mixing is not less than 5 minutes;
(3) Counterfloatating desiliconization: add water in the ore pulp after sizing mixing, the control mass concentration is carried out silicon and is roughly selected operation 20 ~ 30%, is concentrate in the silicon initial separatory cell; Silicon is roughly selected foam and is carried out silicon and select, and silicon selects and is the desiliconization chats in the groove, and the desiliconization chats returns silicon and roughly selects, and it is the silicoide mine tailing that silicon selects foam again;
Described desliming device is hydrocyclone or desliming bucket; Overflow of desliming device and concentrate are merged into comprehensive phosphorus concentrate;
It is sulfuric acid or phosphoric acid that described de-magging is adjusted agent, the perhaps mixture of forming by mass ratio 1:0.5-2 by sulfuric acid and phosphoric acid, and de-magging collector is the saponified of alkyl fatty acid;
It is sodium carbonate that agent is adjusted in described desiliconization, and the desiliconization collecting agent is one or more of organic amine, and organic amine comprises primary amine, polyamines, ether amine, ether polyamine, and non-polar oil is diesel oil or kerosene.
Two reverse floatation process of phosphorus ore of the present invention are on the basis of traditional double reverse floatation process, increase desliming technology between reverse flotation de-magging and Counterfloatating desiliconization, according to the characteristics of desliming technology, the underflow of desliming sized mixing carry out Counterfloatating desiliconization after handling.After adopting desliming technology, energy is eradicated or most of sludge of eliminating disturbs Counterfloatating desiliconization, not only improves flotation efficiency, and more important is the flowability of improving flotation froth, make the two reverse flotations of phosphorus ore can use through engineering approaches, this has very big realistic meaning to development and use China mid low grade phosphate rock.
Description of drawings
Fig. 1 is two reverse floatation process flow charts of a kind of phosphorus ore of the present invention.
The specific embodiment
Below further describe concrete technical scheme of the present invention,, and do not constitute restriction its right so that those skilled in the art understands the present invention further.
Embodiment 1, with reference to Fig. 1, and the two reverse floatation process of a kind of phosphorus ore, its step is as follows:
(1) reverse flotation de-magging: after the granularity of phosphorus ore through being ground to the flotation requirement, adding the reverse flotation de-magging and adjust agent 5kg/t raw ore and de-magging collector 0.8kg/t raw ore, carry out magnesium and roughly select operation, is the de-magging rough concentrate in the magnesium initial separatory cell; After magnesium is roughly selected de-magging that foam adds 3 kg/t raw ores and adjusted agent, carry out magnesium and be elected to be industry again, magnesium selects and is the de-magging chats in the groove, and the de-magging chats returns magnesium and roughly selects, and it is the carbonate mine tailing that magnesium selects foam again;
(2) de-magging rough concentrate desliming, size mixing: the de-magging rough concentrate enters the desliming device will be deviate from less than 10 microns particle, and the sand setting mass concentration after the desliming is 30%, is not more than 25% less than 10 microns granule contents; Sand setting enters tank diameter, and the adding desiliconization is carried out high concentration pulping after adjusting agent 0.5kg/t raw ore, desiliconization collecting agent 50kg/t raw ore and non-polar oil 20kg/t raw ore, and the time of sizing mixing is not less than 5 minutes;
(3) Counterfloatating desiliconization: add water in the ore pulp after sizing mixing, the control mass concentration is carried out silicon and is roughly selected operation 20%, is concentrate in the silicon initial separatory cell; Silicon is roughly selected foam and is carried out silicon and select, and silicon selects and is the desiliconization chats in the groove, and the desiliconization chats returns silicon and roughly selects, and it is the silicoide mine tailing that silicon selects foam again;
Described desliming device is hydrocyclone or desliming bucket; Overflow of desliming device and concentrate are merged into comprehensive phosphorus concentrate;
It is sulfuric acid or phosphoric acid that described de-magging is adjusted agent, and de-magging collector is the saponified of alkyl fatty acid; It is sodium carbonate that agent is adjusted in described desiliconization, and the desiliconization collecting agent is one or more of organic amine, and organic amine comprises primary amine, polyamines, ether amine, ether polyamine, and non-polar oil is diesel oil or kerosene.
Embodiment 2, with reference to Fig. 1, and the two reverse floatation process of a kind of phosphorus ore, its step is as follows:
(1) reverse flotation de-magging: after the granularity of phosphorus ore through being ground to the flotation requirement, adding the reverse flotation de-magging and adjust agent 20kg/t raw ore and de-magging collector 3.5kg/t raw ore, carry out magnesium and roughly select operation, is the de-magging rough concentrate in the magnesium initial separatory cell; After magnesium is roughly selected de-magging that foam adds 2 kg/t raw ores and adjusted agent, carry out magnesium and be elected to be industry again, magnesium selects and is the de-magging chats in the groove, and the de-magging chats returns magnesium and roughly selects, and it is the carbonate mine tailing that magnesium selects foam again;
(2) de-magging rough concentrate desliming, size mixing: the de-magging rough concentrate enters the desliming device will be deviate from less than 38 microns particle, and the sand setting mass concentration after the desliming is 70%, is not more than 25% less than 38 microns granule contents; Sand setting enters tank diameter, and the adding desiliconization is carried out high concentration pulping after adjusting agent 2.5kg/t raw ore, desiliconization collecting agent 400kg/t raw ore and non-polar oil 100kg/t raw ore, and the time of sizing mixing is not less than 5 minutes;
(3) Counterfloatating desiliconization: add water in the ore pulp after sizing mixing, the control mass concentration is carried out silicon and is roughly selected operation 30%, is concentrate in the silicon initial separatory cell; Silicon is roughly selected foam and is carried out silicon and select, and silicon selects and is the desiliconization chats in the groove, and the desiliconization chats returns silicon and roughly selects, and it is the silicoide mine tailing that silicon selects foam again;
Described desliming device is hydrocyclone or desliming bucket; Overflow of desliming device and concentrate are merged into comprehensive phosphorus concentrate;
It is the mixture of being made up of by mass ratio 1:2 sulfuric acid and phosphoric acid that described de-magging is adjusted agent, and de-magging collector is the saponified of alkyl fatty acid;
It is sodium carbonate that agent is adjusted in described desiliconization, and the desiliconization collecting agent is one or more of organic amine, and organic amine comprises primary amine, polyamines, ether amine, ether polyamine, and non-polar oil is diesel oil or kerosene.
Embodiment 3, with reference to Fig. 1, and the two reverse floatation process of a kind of phosphorus ore, its step is as follows:
(1) reverse flotation de-magging: after the granularity of phosphorus ore through being ground to the flotation requirement, adding the reverse flotation de-magging and adjust agent 10kg/t raw ore and de-magging collector 2.5kg/t raw ore, carry out magnesium and roughly select operation, is the de-magging rough concentrate in the magnesium initial separatory cell; After magnesium is roughly selected de-magging that foam adds 0.5 kg/t raw ore and adjusted agent, carry out magnesium and be elected to be industry again, magnesium selects and is the de-magging chats in the groove, and the de-magging chats returns magnesium and roughly selects, and it is the carbonate mine tailing that magnesium selects foam again;
(2) de-magging rough concentrate desliming, size mixing: the de-magging rough concentrate enters the desliming device will be deviate from less than 20 microns particle, and the sand setting mass concentration after the desliming is 50%, is not more than 25% less than 20 microns granule contents; Sand setting enters tank diameter, and the adding desiliconization is carried out high concentration pulping after adjusting agent 1.5kg/t raw ore, desiliconization collecting agent 200kg/t raw ore and non-polar oil 60kg/t raw ore, and the time of sizing mixing is not less than 5 minutes;
(3) Counterfloatating desiliconization: add water in the ore pulp after sizing mixing, the control mass concentration is carried out silicon and is roughly selected operation 25%, is concentrate in the silicon initial separatory cell; Silicon is roughly selected foam and is carried out silicon and select, and silicon selects and is the desiliconization chats in the groove, and the desiliconization chats returns silicon and roughly selects, and it is the silicoide mine tailing that silicon selects foam again;
Described desliming device is hydrocyclone or desliming bucket; Overflow of desliming device and concentrate are merged into comprehensive phosphorus concentrate;
It is the mixture of being made up of by mass ratio 1:0.5 sulfuric acid and phosphoric acid that described de-magging is adjusted agent, and de-magging collector is the saponified of alkyl fatty acid;
It is sodium carbonate that agent is adjusted in described desiliconization, and the desiliconization collecting agent is one or more of organic amine, and organic amine comprises primary amine, polyamines, ether amine, ether polyamine, and non-polar oil is diesel oil or kerosene.
Embodiment 4, the two reverse floatation process experiments one of phosphorus ore.Somewhere, Sichuan rock phosphate in powder, experimental scale: 1 ton of/day continuous extension trial, adopt the two reverse floatation process of the present invention, it comprises the steps:
(1) reverse flotation de-magging.Raw ore (P
2O
520.92%, MgO5.96%, acid insoluble 14.15%) after one section closed circuit being ground to-0.074mm content is 80 ~ 85%, add mixture (1:1) the 12.24kg/t raw ore and the collecting agent fatty acid soaps 2.33kg/t of sulfuric acid and phosphoric acid, carrying out magnesium and roughly select operation, is the de-magging rough concentrate in the magnesium initial separatory cell.After magnesium is roughly selected mixture (1:1) 1.0 kg/t of foam adding sulfuric acid and phosphoric acid, carry out magnesium and be elected to be industry again, magnesium selects and is the de-magging chats in the groove, and the de-magging chats returns magnesium and roughly selects, and it is carbonate mine tailing (P that magnesium selects foam again
2O
58.00%, MgO14.93%, acid insoluble 6.86%).
(2) de-magging rough concentrate desliming, size mixing.The de-magging rough concentrate enters the desliming bucket will be deviate from less than 20 microns particle, and the sand setting mass concentration after the desliming is 30 ~ 40%, is 20 ~ 25% less than 20 microns granule contents.Sand setting enters tank diameter, behind adding sodium carbonate 1.2kg/t raw ore, desiliconization collecting agent dodecyl propane diamine 150kg/t raw ore and the diesel oil 50kg/t raw ore, sizes mixing, and sizes mixing 11 minutes time.
(3) Counterfloatating desiliconization.Ore pulp after sizing mixing adds water, and the control mass concentration is carried out silicon and roughly selected operation 20 ~ 30%, is concentrate (P in the silicon initial separatory cell
2O
533.02%, MgO0.62%, acid insoluble 12.07%).Silicon is roughly selected foam and is carried out silicon and select, and silicon selects and is the desiliconization chats in the groove, and the desiliconization chats returns silicon and roughly selects, and it is siliceous gangue mineral tailings (P that silicon selects foam again
2O
515.19%, MgO1.22%, acid insoluble 49.98%).
(4) desliming device overflow (P
2O
526.61%, MgO1.19%, acid insoluble 23.29%) be merged into comprehensive phosphorus concentrate (P with concentrate
2O
530.58%, MgO1.14%, acid insoluble 15.32%), P
2O
5The rate of recovery about 80%.As adopt other organic amine collecting agent also can obtain The above results.
Siliceous gangue mineral tailings to this technology is carried out grain size analysis, and analysis result sees Table 1
The phosphorus ore siliceous gangue mineral tailings screen analysis of somewhere, Sichuan is table 1 as a result
By the screen analysis result as can be known, siliceous gangue mineral tailings granularity is from coarse to fine, P
2O
5The % grade progressively uprises, at fine granularity rank (0.020mm) P
2O
5The % grade is the highest, proves that this part particle separating effect in Counterfloatating desiliconization is the poorest.This has also illustrated before Counterfloatating desiliconization, sloughs importance and necessity less than 20 microns thin mud.
Embodiment 5, the two reverse floatation process experiments two of phosphorus ore.Somewhere, Hubei rock phosphate in powder, experimental scale: 1 ton of/day continuous extension trial, adopt the two reverse floatation process of the present invention, it comprises the steps:
(1) reverse flotation de-magging.Raw ore (P
2O
524.85%, MgO3.78%, acid insoluble 16.19%) after one section closed circuit being ground to-0.074mm content is 70 ~ 75%, add phosphoric acid 7.85kg/t raw ore and collecting agent fatty acid soaps 2.30kg/t, carry out magnesium and roughly select operation, be the de-magging rough concentrate in the magnesium initial separatory cell.Magnesium carries out magnesium and is elected to be industry again after roughly selecting foam adding phosphatase 11 .5 kg/t, and magnesium selects and is the de-magging chats in the groove, and the de-magging chats returns magnesium and roughly selects, and it is carbonate mine tailing (P that magnesium selects foam again
2O
55.43%, MgO15.66%, acid insoluble 5.15%).
(2) de-magging rough concentrate desliming, size mixing.The de-magging rough concentrate enters the desliming bucket will be deviate from less than 20 microns particle, and the sand setting mass concentration after the desliming is 30 ~ 40%, is 8 ~ 15% less than 20 microns granule contents.Sand setting enters tank diameter, behind adding sodium carbonate 1.5kg/t raw ore, desiliconization collecting agent lauryl ether propylamine 120kg/t raw ore and the kerosene 40kg/t raw ore, sizes mixing, and sizes mixing 9 minutes time.
(3) Counterfloatating desiliconization.Ore pulp after sizing mixing adds water, and the control mass concentration is carried out silicon and roughly selected operation 20 ~ 30%, is concentrate (P in the silicon initial separatory cell
2O
534.11%, MgO0.24%, acid insoluble 12.16%).Silicon is roughly selected foam and is carried out silicon and select, and silicon selects and is the desiliconization chats in the groove, and the desiliconization chats returns silicon and roughly selects, and it is siliceous gangue mineral tailings (P that silicon selects foam again
2O
515.47%, MgO0.79%, acid insoluble 50.09%).
(4) desliming device overflow (P
2O
528.05%, MgO0.76%, acid insoluble 21.89%) be merged into comprehensive phosphorus concentrate (P with concentrate
2O
532.12%, MgO0.44%, acid insoluble 14.48%), P
2O
5The rate of recovery about 90%.
Siliceous gangue mineral tailings to this technology is carried out grain size analysis, and analysis result sees Table 2
The phosphorus ore siliceous gangue mineral tailings screen analysis of somewhere, Hubei is table 2 as a result
Embodiment 6, the two reverse floatation process experiments three of phosphorus ore.Somewhere, Yunnan rock phosphate in powder, experimental scale: 6 tons of/hour commerical tests, adopt the two reverse floatation process of the present invention, it comprises the steps:
(1) reverse flotation de-magging.Raw ore (P
2O
524.93%, MgO3.57%, SiO
216.47%) after one section closed circuit being ground to-0.074mm content is 75 ~ 80%, add nitration mixture (sulfuric acid: phosphoric acid=1.5:1) 13.04kg/t raw ore and collecting agent fatty acid soaps 1.60kg/t, carry out magnesium and roughly select operation, be the de-magging rough concentrate in the magnesium initial separatory cell.Magnesium carries out magnesium and is elected to be industry again after roughly selecting foam adding nitration mixture 2.4 kg/t, and magnesium selects and is the de-magging chats in the groove, and the de-magging chats returns magnesium and roughly selects, and it is the carbonate mine tailing that magnesium selects foam again.
(2) de-magging rough concentrate desliming, size mixing.The de-magging rough concentrate enters cyclone will be deviate from less than 38 microns particle, and the sand setting mass concentration after the desliming is 40 ~ 70%, is 10 ~ 20% less than 38 microns granule contents.Sand setting enters tank diameter, behind adding sodium carbonate 0.5kg/t raw ore, desiliconization collecting agent lauryl ether propylamine 135kg/t raw ore and the kerosene 45kg/t raw ore, sizes mixing, and sizes mixing 5 minutes time.
(3) Counterfloatating desiliconization.Ore pulp after sizing mixing adds water, and the control mass concentration is carried out silicon and roughly selected operation 20 ~ 30%, is concentrate in the silicon initial separatory cell.Silicon is roughly selected foam and is carried out silicon and select, and silicon selects and is the desiliconization chats in the groove, and the desiliconization chats returns silicon and roughly selects, and it is the siliceous gangue mineral tailings that silicon selects foam again.
(4) overflow of desliming device and concentrate are merged into comprehensive phosphorus concentrate (P
2O
530.56%, MgO0.79%, SiO
216.28%) P,
2O
5The rate of recovery about 88%.
Claims (1)
1. two reverse floatation process of a phosphorus ore is characterized in that its step is as follows:
(1) reverse flotation de-magging: after the granularity of phosphorus ore through being ground to the flotation requirement, adding the reverse flotation de-magging and adjust agent 5 ~ 20kg/t raw ore and de-magging collector 0.8 ~ 3.5kg/t raw ore, carry out magnesium and roughly select operation, is the de-magging rough concentrate in the magnesium initial separatory cell; Magnesium is roughly selected foam and is added after the de-magging be not higher than 3 kg/t raw ores adjusts agent, carries out magnesium and is elected to be industry again, and magnesium selects and is the de-magging chats in the groove, and the de-magging chats returns magnesium and roughly selects, and it is the carbonate mine tailing that magnesium selects foam again;
(2) de-magging rough concentrate desliming, size mixing: the de-magging rough concentrate enters the desliming device will be deviate from less than the particle of 10-38 micron, and the sand setting mass concentration after the desliming is 30 ~ 70%, be not more than 25% less than the granule content of 10-38 micron; Sand setting enters tank diameter, and the adding desiliconization is carried out high concentration pulping after adjusting agent 0.5 ~ 2.5kg/t raw ore, desiliconization collecting agent 50 ~ 400kg/t raw ore and non-polar oil 20 ~ 100kg/t raw ore, and the time of sizing mixing is not less than 5 minutes;
(3) Counterfloatating desiliconization: add water in the ore pulp after sizing mixing, the control mass concentration is carried out silicon and is roughly selected operation 20 ~ 30%, is concentrate in the silicon initial separatory cell; Silicon is roughly selected foam and is carried out silicon and select, and silicon selects and is the desiliconization chats in the groove, and the desiliconization chats returns silicon and roughly selects, and it is the silicoide mine tailing that silicon selects foam again;
Described desliming device is hydrocyclone or desliming bucket; Overflow of desliming device and concentrate are merged into comprehensive phosphorus concentrate;
It is sulfuric acid or phosphoric acid that described de-magging is adjusted agent, the perhaps mixture of forming by mass ratio 1:0.5-2 by sulfuric acid and phosphoric acid, and de-magging collector is the saponified of alkyl fatty acid;
It is sodium carbonate that agent is adjusted in described desiliconization, and the desiliconization collecting agent is one or more of organic amine, and organic amine comprises primary amine, polyamines, ether amine, ether polyamine, and non-polar oil is diesel oil or kerosene.
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| CN103706488A (en) * | 2013-12-31 | 2014-04-09 | 中蓝连海设计研究院 | Reverse flotation technology of phosphate ore in alkaline medium |
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