CN101869873B - Method for improving recovery rate of refractory concomitant molybdenum in copper ore - Google Patents
Method for improving recovery rate of refractory concomitant molybdenum in copper ore Download PDFInfo
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- CN101869873B CN101869873B CN2010101969993A CN201010196999A CN101869873B CN 101869873 B CN101869873 B CN 101869873B CN 2010101969993 A CN2010101969993 A CN 2010101969993A CN 201010196999 A CN201010196999 A CN 201010196999A CN 101869873 B CN101869873 B CN 101869873B
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Abstract
The invention discloses a method for improving the recovery rate of refractory concomitant molybdenum in a copper ore. The method comprises the following steps of: adding lime after smashing a crude ore; grinding the ore to the fineness of -0.074mm70percent; and obtaining ore pulp by dosing twice, roughly selecting twice, then dosing twice and selecting twice. In the method, a medicament system of adding kerosene continuously and regulating by using sodium hexametaphosphate when selecting is adopted, so that the recovery rate of concomitant molybdenum in copper concrete is improved to 45 percent from 20 percent on the basis of ensuring the economic and technical indicators of the current copper separation. The method of the invention has the characteristics of simplicity, and easy operation and construction in field production. By using the method, not only the comprehensive utilization ratio of ore resources is improved, but also enterprise and social benefits are increased.
Description
(1) technical field: the present invention relates to the metallurgical chemistry field, specifically is a kind of method that improves recovery rate of refractory concomitant molybdenum in copper ore.
(2) prior art: molybdenum has a wide range of applications in commercial production as a kind of important non-ferrous metal, particularly as alloy addition, in Iron and Steel Production, plays an important role.Molybdenum alloy is widely used in sophisticated industry, is used to make the astrorocket engine jet pipe, the rudder of aircraft etc.World's molybdenum total output about 40% relies on copper molybdenum separating technology to obtain from the copper-molybdenum mountain.
The ore that general copper mine is better for association molybdenum ore character, the association molybdenum is prone to choosing, the association molybdenum sorts the rate of recovery about 50%.And ore poor for association molybdenum ore character, difficult choosing, the association molybdenum recovery is merely 10%-20%.
Refractory concomitant molybdenum in copper ore is meant that the granularity of molybdenite in the ore is obviously tiny than chalcopyrite, degree of scatter is high; Under the mog condition that chalcopyrite obtains to dissociate basically; Most of molybdenite still is the ore of intergrowth output, shows and select in the copper process that the operation recovery of association molybdenum is extremely low.
Select the association molybdenum to improve its rate of recovery for difficulty, research adopts reinforcement raw ore mog to improve the monomer whose degree of dissociation usually, but there is the problem that the content of association molybdenum own is lower, the production cost increase rate is bigger in it; And the secondary argillization of ore that produces is seriously disturbed the come-up of micro-size fraction molybdenum ore thing again, the lifting DeGrain.
The regime of agent that also has research to adopt the sulfuration combination medicament to replace lime improves difficulty and selects the association molybdenum recovery, but its ore dressing production and technical indication influence to major metal mineral copper is bigger, causes the fluctuation and the decline of copper mineral flotation index.
(3) summary of the invention: the object of the invention just provides a kind of method that improves recovery rate of refractory concomitant molybdenum in copper ore; This method can effectively improve the rate of recovery that which character is poor, difficulty is selected the association molybdenum ore guaranteeing existing the choosing on the basis of copper economic and technical norms.The inventive method is simple, and produced on-site is operated easily, implemented; Not only the ore resource comprehensive utilization ratio can be improved, and enterprise and social benefit can be increased.
This method comprises the steps:
(1) with the tcrude ore particle size reduction to-15mm or-20mm, get into filler bin;
(2) add lime in the fine ore after fragmentation, addition is 2kg in the raw ore per ton, and to fineness-0.074mm70%, its ore pulp dosing is sized mixing through ore grinding, and the medicament of interpolation and consumption are that raw ore per ton adds kerosene 56g, butyl xanthate 30g and No. 2 oily 40g; Control pH is 8.0, gets into and roughly selects for the first time;
(3) choosing back ore pulp dosing once more, the medicament of interpolation and consumption are that raw ore per ton adds kerosene 70g, butyl xanthate 30g, No. 2 oily 30g, control pH is 8.0, gets into and roughly selects for the second time;
(4) choosing back ore pulp dumps as mine tailing through scanning its ore pulp again, and medicament and the consumption of scanning adding are that raw ore per ton adds butyl xanthate and No. 2 oil are 30g;
(5) foam roughly selected of step 2,3 secondaries merges and adds lime, and addition is 1Kg in the raw ore per ton, and fineness-0.034mm85% regrinds; Dosing is sized mixing, and the medicament of interpolation and consumption are that raw ore per ton adds kerosene 35g, calgon 300g; Control pH is 10, and it is selected to carry out the first time; Its foam dosing, the medicament of interpolation and consumption are that raw ore per ton adds kerosene 14g, and it is selected to carry out the second time again, and foam is and contains the molybdenum copper concentrate;
(6) wherein the second time, selected back ore pulp turned back to the operation of regrinding; For the first time selected back ore pulp with scan foam and merge to turn back to and roughly select for the first time.
The present invention compared with prior art; Have following characteristics: adopt the collecting agent that adds the molybdenum ore thing continuously---kerosene (roughly select 56g/t for the first time, roughly select 70g/t for the second time, selected 35g/t, selected 14g/t for the second time) for the first time; Strengthen the floatability of intergrowth molybdenum ore thing, the regime of agent of adjusting with calgon when the first time is selected, eliminate the influence of back sludge of regrinding molybdenum ore thing floatability; Control is roughly selected, selected pH value, reduces the inhibition ability of lime to the molybdenum ore thing.Guaranteeing existing the choosing on the basis of copper economic and technical norms, copper concentrate association molybdenum recovery is brought up to 45% from 20%; The inventive method is simple, and produced on-site is operated easily, implemented; This method not only can improve the ore resource comprehensive utilization ratio, and can increase enterprise and social benefit.
(4) description of drawings
Fig. 1 is a process flow diagram of the present invention;
(5) specific embodiment
Embodiment 1
1, with the tcrude ore particle size reduction to-15mm or-20mm, get into filler bin;
2, add lime in the fine ore after fragmentation, addition is 2kg in the raw ore per ton, and to fineness-0.074mm70%, its ore pulp dosing is sized mixing through ore grinding, and the medicament of interpolation and consumption are that raw ore per ton adds kerosene 56g, butyl xanthate 30g and No. 2 oily 40g; Control pH is 8.0, gets into and roughly selects for the first time;
3, choosing back ore pulp dosing once more, the medicament of interpolation and consumption are that raw ore per ton adds kerosene 70g, butyl xanthate 30g, No. 2 oily 30g, control pH is 8.0, gets into and roughly selects for the second time;
4, choosing back ore pulp dumps as mine tailing through scanning its ore pulp again, and medicament and the consumption of scanning adding are that raw ore per ton adds butyl xanthate and No. 2 oil are 30g;
5, the foam roughly selected of step 2,3 secondaries merges and adds lime, and addition is 1Kg in the raw ore per ton, and fineness-0.034mm85% regrinds; Dosing is sized mixing, and the medicament of interpolation and consumption are that raw ore per ton adds kerosene 35g, calgon 300g; Control pH is 10, and it is selected to carry out the first time; Its foam dosing, the medicament of interpolation and consumption are that raw ore per ton adds kerosene 14g, and it is selected to carry out the second time again, and foam is and contains the molybdenum copper concentrate;
6, wherein the second time, selected back ore pulp turned back to the operation of regrinding; For the first time selected back ore pulp with scan foam and merge to turn back to and roughly select for the first time.
Above-mentioned whole floatation process take time is identical with conventional floatation process, generally is no more than 30 minutes.
Claims (1)
1. a method that improves recovery rate of refractory concomitant molybdenum in copper ore is characterized in that comprising the steps:
(1) with the tcrude ore particle size reduction to-15mm or-20mm, get into filler bin;
(2) add lime in the fine ore after fragmentation, addition is 2kg in the raw ore per ton, and to fineness-0.074mm70%, its ore pulp dosing is sized mixing through ore grinding, and the medicament of interpolation and consumption are that raw ore per ton adds kerosene 56g, butyl xanthate 30g and No. 2 oily 40g; Control pH is 8.0, gets into and roughly selects for the first time;
(3) choosing back ore pulp dosing once more, the medicament of interpolation and consumption are that raw ore per ton adds kerosene 70g, butyl xanthate 30g, No. 2 oily 30g, control pH is 8.0, gets into and roughly selects for the second time;
(4) choosing back ore pulp dumps as mine tailing through scanning its ore pulp again, and medicament and the consumption of scanning adding are that raw ore per ton adds butyl xanthate and No. 2 oil are 30g;
(5) foam roughly selected of step 2,3 secondaries merges and adds lime, and addition is 1Kg in the raw ore per ton, and fineness-0.034mm85% regrinds; Dosing is sized mixing, and the medicament of interpolation and consumption are that raw ore per ton adds kerosene 35g, calgon 300g; Control pH is 10, and it is selected to carry out the first time; Its foam dosing, the medicament of interpolation and consumption are that raw ore per ton adds kerosene 14g, and it is selected to carry out the second time again, and foam is and contains the molybdenum copper concentrate;
(6) wherein the second time, selected back ore pulp turned back to the operation of regrinding; For the first time selected back ore pulp with scan foam and merge to turn back to and roughly select for the first time.
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| CN2010101969993A CN101869873B (en) | 2010-05-29 | 2010-05-29 | Method for improving recovery rate of refractory concomitant molybdenum in copper ore |
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| CN2010101969993A CN101869873B (en) | 2010-05-29 | 2010-05-29 | Method for improving recovery rate of refractory concomitant molybdenum in copper ore |
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| CN101869873A CN101869873A (en) | 2010-10-27 |
| CN101869873B true CN101869873B (en) | 2012-11-28 |
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| CN105381868B (en) * | 2015-12-22 | 2017-12-05 | 中国地质科学院矿产综合利用研究所 | Physical beneficiation phosphorus reduction method for skarn type high-phosphorus molybdenum ore |
| CN106391319B (en) * | 2016-11-27 | 2018-09-11 | 长春黄金研究院 | A method of improving Skarn Cu molybdenum ore copper-cobalt ore molybdenum concentrate grade |
| CN108837949A (en) * | 2018-05-31 | 2018-11-20 | 长春黄金研究院有限公司 | A method of improving copper-molybdenum grade in high-sulfur horn stone copper-molybdenum ore flotation concentrate |
| CN111229472A (en) * | 2020-02-14 | 2020-06-05 | 中国恩菲工程技术有限公司 | Mineral collector and flotation process of copper sulfide ore |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101455997A (en) * | 2007-12-11 | 2009-06-17 | 灵宝市金源矿业有限责任公司 | Method for increasing molybdenum ore dressing recovery percentage |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101455997A (en) * | 2007-12-11 | 2009-06-17 | 灵宝市金源矿业有限责任公司 | Method for increasing molybdenum ore dressing recovery percentage |
Non-Patent Citations (4)
| Title |
|---|
| 李迎国等.某大型斑岩型铜钼矿选矿试验研究.《有色金属（选矿部分）》.2005,(第1期),14-17页. * |
| 王越等.内蒙古某大型斑岩铜钼矿混合浮选捕收剂试验研究.《有色金属(选矿部分)》.2010,(第5期),37-40页. * |
| 谷志君等.某大型铜钼矿铜钼可浮性研究.《有色金属（选矿部分）》.2009,(第2期),1-4页. * |
| 马骁.金堆城钼业集团公司铜精矿中难选钼的综合回收试验研究.《中国优秀硕士学位论文全文数据库》.2007,第3页. * |
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