CN101816979A - Flotation activating agent of marmatite and blende and preparation method thereof - Google Patents

Flotation activating agent of marmatite and blende and preparation method thereof Download PDF

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CN101816979A
CN101816979A CN201010124710.7A CN201010124710A CN101816979A CN 101816979 A CN101816979 A CN 101816979A CN 201010124710 A CN201010124710 A CN 201010124710A CN 101816979 A CN101816979 A CN 101816979A
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solution
marmatite
activator
activating agent
quality
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CN101816979B (en
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童雄
谢贤
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Kunming University of Science and Technology
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Kunming University of Science and Technology
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Abstract

The invention provides a flotation activating agent of marmatite and blende, which is a coordination compound of copper and ammonia and is characterized in that the molecular formula of the coordination compound is [Cu(NH3)x]2+, wherein X=1-8. The activating agent of the invention solves the problem of selected activation and inhibition of marmatite, overcomes the problems of low activation selection, low zinc concentrate grade, serious metal mutual containing and the like of common activating agent copper sulphate and solves the problems of high-efficiency enrichment and comprehensive recovery of concomitant rare and noble metal. The activating agent is activated under the condition that pH value is as low as 7-11, provides necessary guarantee for reducing lime dosage in production, reasonably and effectively recovers other sulfide minerals and comprehensively recovers rare metal, and has the advantages of high activation efficiency, low production cost and the like. The invention also applies a preparation method for the flotation activating agent.

Description

Flotation activating of marmatite and zincblende and preparation method thereof
Technical field
The present invention relates to ore dressing engineering and rare precious metal comprehensive utilization technique field, particularly a kind of efficient activator that is used for marmatite and zincblende flotation and its production and use.
Background technology
China's zinc metal reserves account for 15% of world's gross reserves, occupy the second in the world, and China also is a zinc big producing country simultaneously, and zinc metal output reached 374.9 ten thousand tons in 2007, ranked first in the world, and export volume reaches 27.56 ten thousand tons.Along with development and national economy, increase to zinc metal demand, press for the resource of complicated difficult choosing is developed and utilized, it is more domestic that leaded, zinc, sulphur, iron or zinc, copper, tin, iron, the plumbous zinc ore mountain of sulphur and zinc-tin mine etc. are in various degree the marmatite that contains choosing in distress all, for example, the big factory in Guangxi, river three plumbous zinc ores, the yellow sand level ground in Hunan, Pan Jiachong, the plumbous zinc ore of HERBA ONYCHII, the plumbous zinc ore in the Hezhang in Guizhou, the plumbous zinc ore in the tin iron mountain in Qinghai, the plumbous zinc ore in the XiLin in Heilungkiang, the ditch of grazing cattle in Jilin, so ox is washed in a pan plumbous zinc ore, the plumbous zinc ore of thick mother-in-law's col in Guangdong, all Long Xinxikuang in Yunnan and billows deep blue lead ore etc.The marmatite iron content in these mines is generally 8-12%, have up to 26%, therefore, adopt suitable marmatite ore-dressing technique, marmatite is developed and utilized significant.
Zincblende, marmatite and wurtzite are three kinds of common zinc sulfide minerals.Zincblende (ZnS) belongs to isometric system, and crystalline form often is a tetrahedron; Natural cleiophane contains zinc 67.1%, 32.9% sulphur.Wurtzite is general similar to the physical property of zincblende, generally rare in practice.The zincblende of iron content more than 6% is called marmatite [(Zn XFe 1-XS)], zinc blend lattice is often sneaked into isomorph by Tie Tong, and the quantity of infiltrating iron is generally 6~12% (Gao Shida 26%).
In actual process, marmatite than zincblende show not easily-activated, floatability is poor, to characteristics such as medium sensitivities, it is difficult to separate with mineral such as magnetic iron ore, pyrite and mispickel.Simultaneously, compare with other sulfide mineral, the floatability of marmatite or zincblende is far smaller than other sulfide minerals, the general not activated marmatite or the flotation of zincblende need need the above xanthate of 4 carbon with hybrid collector or chain length, make the flotation of the zincblende comparison difficulty that seems.Therefore, activation is the important step in the marmatite ore dressing.Main in producing at present with the activator of copper sulphate as marmatite, however copper sulphate has following defective as activator:
(1) select marmatite for difficulty, the activation of copper sulphate is unsatisfactory, does not reach good index.
(2) activity function of copper sulphate strengthens along with the enhancing of alkalescence, therefore, the activation of copper sulphate generally is to carry out under a high-alkali environment, thereby certainly will need to add a large amount of lime aborning, so just suppress the flotation of the relatively poor zincblende of floatability, marmatite and oxidized mineral such as chalcopyrite.
(3) rolling up of lime consumption not only increases beneficiation cost, increases workman's workload, and from ore dressing and comprehensive the recovery and the angle of utilizing, the lime of big consumption also is worthless.In selecting the zinc process, adjust the pH value and suppress after other sulfide minerals with a large amount of lime, during next step flotation must come with a large amount of sulfuric acid and the lime in the ore pulp, to reduce the pH value, perhaps add a large amount of activator activation and other sulfide minerals of flotation, this has not only further increased beneficiation cost, and the calcium sulfate that lime and sulfuric acid reaction generate is easy to blocking pipe, at the gravitational separation equipment surface scale, seriously influences the continuity of mineral processing circuit and the rate of recovery of gravity treatment; In addition, sulfuric acid also can produce etching problem to pipeline and preparation equipment.
(4) copper sulphate and combination activator thereof also can activate difficult floating magnetic iron ore in the activation marmatite, increase the iron content in the zinc concentrate, to follow-up hydrometallurgy process, zinc and indium further separated with enrichment very unfavorable.In order to suppress magnetic iron ore, the often possible and large usage quantity of the kind of inhibitor, flow process are also complicated more.If the activator that is adopted is under low alkali condition, do not activate magnetic iron ore or pyrite and only activate marmatite and zincblende, then can simplify the deironing sulfur removal technology, save production cost, improve the grade and the rate of recovery of zinc concentrate zinc, indium, silver etc., reduce the content of iron and sulphur in the zinc concentrate, reduce the adverse effect of element such as iron in the zinc concentrate follow-up metallurgical process; Simultaneously, can also improve the rate of recovery of reselection operation significantly.
As seen, there are a lot of defectives in conventional activator of the at present domestic and international marmatite that adopts and inhibitor, and its activation is not high with the efficient and the selectivity that suppress, causes the rate of recovery of zinc and zinc concentrate grade not high, and metal contains seriously mutually.
Summary of the invention
The objective of the invention is: overcome the deficiency of existing activator copper sulphate, the dressing activator of high marmatite of a kind of activation efficiency and zincblende is provided.This activator has characteristics such as selectivity height, rate of recovery height, environmental friendliness.Because the pH value that needs is lower, the scope of application is wider.
Technical scheme of the present invention is: the dressing activator of making marmatite and zincblende with the complex of copper and ammonia is.Activator of the present invention can use under the low alkalinity environmental condition, according to the concrete condition of ore, is to use under 7~11 the environment in the pH value, and is respond well.
The flotation activating of marmatite of the present invention and zincblende is the complex of copper and ammonia, it is characterized in that, the molecular formula of said complex is: [Cu (NH 3) x] 2+, X=1 in the formula~8.
The preparation method of the flotation activating of marmatite of the present invention and zincblende, it is characterized in that, preparation section is as follows, said in the operation of following a~c " by the suitable metered proportions of chemical reaction " is meant the completeness in order to react, the additional proportion of central ion, ligand must satisfy the corresponding conditions of chemical reaction at least, under the principle of not wasting, excessive 0.5~10.0 quality % of the comparable central ion of ligand;
A, by the suitable metered proportions of chemical reaction ammonia is dissolved in a kind of solvent of selecting from the second alcohol and water, obtains first kind of solution (A), the concentration of solution is 0.5~25 quality %;
B, press the suitable metered proportions of chemical reaction with Cu (NO 3) 23H 2O or CuSO 45H 2O is dissolved in a kind of solvent of selecting from the second alcohol and water, obtains second kind of solution (B), and the concentration of solution is 0.5~50 quality %;
C, press the suitable metered proportions of chemical reaction with NaOH and Na 2CO 3Be dissolved in a kind of solvent of selecting from the second alcohol and water, obtain the third solution (C), the concentration of solution is 5~40 quality %;
D, stirring gently join A solution in the B solution down, under 150~200 rev/mins mixing speed, reacted under the room temperature 2~30 minutes, add C solution again, continue reaction 3~25 minutes under the room temperature, add a kind of solution of selecting from the second alcohol and water at last, reaction generates the crude product of solid precipitation;
E, with the reacted solution filtration under diminished pressure, use C 2H 5The sediment that the OH washing and filtering obtains blots with filter paper, then at air drying, promptly obtains the pure product of flotation activating.
This activator can adopt common copper to cooperate technology to be prepared with ammonia etc., in the ore dressing process in plumbous zinc ore that contains marmatite and zincblende and zinc-tin ore deposit, as activator marmatite in the ore and zincblende are activated, improve the floatability of marmatite and zincblende.The ratio of copper and ammonia etc. can be according to the situation of concrete ore dressing raw material in the complex, uses in lower pH value scope and certain consumption, need not operate under high alkali environment.
This activator all can use in the flotation of marmatite and zincblende polymetallic ore and gravity separation technology.
The present invention adopts the complex of copper and ammonia etc. as activator, because the effect of copper and ammonia etc., strengthened the hydrophobicity of surface of marmatite, make this activator only optionally activate marmatite, the selectivity that has overcome conventional activator is not high, the zinc concentrate grade is not high and cause disadvantageous technical bottleneck for follow-up metallurgical process recovery zinc and indium etc., has solved the problem of marmatite floatation process activation efficiency well.
Compare with prior art, the present invention has following advantage or good effect:
1, solved a difficult difficult problem of selecting the marmatite activation;
2, activator of the present invention need not activate under high pH value condition, mainly uses under neutrality, low alkalinity environment, and employed ore pulp environment pH value is 7~11.This just provides necessary assurance for reducing lime consumption, reasonable effectively recovery other sulfide minerals, cassiterite in producing and comprehensively reclaiming rare precious metal.
3, the production cost of activator is lower than the cost of copper sulphate, also be that enterprise is under low basicity condition, realize the efficient separation and the enrichment of zinc-sulphur, tin-sulphur, lead-zinc etc., and can create condition for carrying out effective desulfurization, reduction sulfuric acid consumption, raising zinc indium grade and the rate of recovery before the reselection operation.
The specific embodiment:
The present invention is further elaborated below in conjunction with embodiment.
Embodiment 1
Get an amount of ammonia and be dissolved in the ethanol, obtain first kind of solution (A), the concentration of solution is 0.5 quality %; Get proper C u (NO 3) 23H 2O is dissolved in the ethanol, obtains second kind of solution (B), and the concentration of solution is 0.5 quality %; The suitable metered proportions of pressing chemical reaction is with NaOH and Na 2CO 3Be dissolved in the ethanol, obtain the third solution (C), the concentration of solution is 5 quality %; Under stirring A solution is gently joined in the B solution, under 150 rev/mins mixing speed, reaction is 2 minutes under the room temperature, adds C solution again, continues reaction 3 minutes under the room temperature, adds entry at last, the crude product of reaction generation solid precipitation; With the reacted solution filtration under diminished pressure, use C 2H 5The sediment that the OH washing and filtering obtains blots with filter paper, then at air drying, promptly obtains the pure product of flotation activating, is the novel dressing activator of marmatite and zincblende.
Treat that ore dressing is the ore of Guangxi Da Chang, elements such as leaded in the ore, antimony, zinc, sulphur, iron, indium and silver, wherein mineral content contains 0.7~10.5% marmatite and 0.4% above zincblende, and the content of iron reaches about 11% in the marmatite.Adopt common ore-dressing technique, add this activator in floatation process, add common collecting agent, through conventional flotation, ore dressing environment pH value is 7.
Adopt this activator,, can reclaim marmatite and zincblende well through above-mentioned technical process.
Embodiment 2
Get an amount of ammonia and be dissolved in the water, obtain first kind of solution (A), the concentration of solution is 6.25 quality %; Get proper C uSO 45H 2O is dissolved in the water, and obtains second kind of solution (B), and the concentration of solution is 25 quality %; The suitable metered proportions of pressing chemical reaction is with NaOH and Na 2CO 3Be dissolved in the water, obtain the third solution (C), the concentration of solution is 20 quality %; Under stirring A solution is gently joined in the B solution, under 200 rev/mins mixing speed, reaction is 15 minutes under the room temperature, adds C solution again, continues reaction 10 minutes under the room temperature, adds ethanol at last, the crude product of reaction generation solid precipitation; With the reacted solution filtration under diminished pressure, use C 2H 5The sediment that the OH washing and filtering obtains blots with filter paper, then at air drying, promptly obtains the pure product of flotation activating, is the novel dressing activator of marmatite and zincblende.
Treat that ore dressing is the ore in all imperial zinc-tin mining area, wherein contain elements such as zinc, copper, tin, iron, sulphur, indium, gallium, germanium, gold and silver, wherein mineral content contains 0.7~11.8% marmatite and 0.5% above zincblende, and the content of iron reaches more than 20% in the marmatite.Adopt common ore-dressing technique, add this activator in floatation process, add common collecting agent then, through conventional flotation, ore dressing environment pH value is 9.
Adopt this activator, through above-mentioned technical process, sub-elect marmatite and the 50% above zincblende of grade more than 46%, the rate of recovery can reach more than 90% respectively.
Embodiment 3
Get an amount of ammonia and be dissolved in the water, obtain first kind of solution (A), the concentration of solution is 25 quality %; Get proper C u (NO 3) 2Be dissolved in the water, obtain second kind of solution (B), the concentration of solution is 50 quality %; The suitable metered proportions of pressing chemical reaction is with NaOH and Na 2CO 3Be dissolved in the water, obtain the third solution (C), the concentration of solution is 40 quality %; Under stirring A solution is gently joined in the B solution, under 150 rev/mins mixing speed, reaction is 30 minutes under the room temperature, adds C solution again, continues reaction 25 minutes under the room temperature, adds ethanol at last, the crude product of reaction generation solid precipitation; With the reacted solution filtration under diminished pressure, use C 2H 5The sediment that the OH washing and filtering obtains blots with filter paper, then at air drying, promptly obtains the pure product of flotation activating, is the novel dressing activator of marmatite and zincblende.
Treat that ore dressing is the ore of billows Cang Qiankuangqu, contain elements such as zinc, copper, iron, sulphur, indium, gold and silver in the ore, wherein mineral content contains 0.5~9.8% marmatite and 0.6% above zincblende.Adopt common ore-dressing technique, add this activator in floatation process, add common collecting agent then, with the conventional flotation of process, ore dressing environment pH value is 11.
Adopt this activator,, sub-elect marmatite and the 46% above zincblende of grade more than 40% through above-mentioned technical process.
Embodiment 4
Get an amount of ammonia and be dissolved in the ethanol, obtain first kind of solution (A), the concentration of solution is 5 quality %; Get proper C uSO 45H 2O is dissolved in the ethanol, obtains second kind of solution (B), and the concentration of solution is 40%; The suitable metered proportions of pressing chemical reaction is with NaOH and Na 2CO 3Be dissolved in the ethanol, obtain the third solution (C), the concentration of solution is 10 quality %; Under stirring A solution is gently joined in the B solution, under 180 rev/mins mixing speed, reaction is 20 minutes under the room temperature, adds C solution again, continues reaction 15 minutes under the room temperature, adds entry at last, the crude product of reaction generation solid precipitation; With the reacted solution filtration under diminished pressure, use C 2H 5The sediment that the OH washing and filtering obtains blots with filter paper, then at air drying, promptly obtains the pure product of flotation activating, is the novel dressing activator of marmatite and zincblende.
Treat that ore dressing is the ore in all imperial zinc-tin mining area, contain elements such as zinc, copper, tin, iron, sulphur, indium, gallium, germanium, gold and silver in the ore, wherein mineral content contains 0.7~11.8% marmatite and 0.5% above zincblende.Adopt common ore-dressing technique, add this activator in floatation process, add common collecting agent then, with the conventional flotation of process, ore dressing environment pH value is 8.
Adopt this activator, through above-mentioned technical process, sub-elect marmatite and 50% above zincblende more than 45%, the rate of recovery can reach more than 90% respectively.
Comparison by activator of the present invention and copper sulphate, this novel activator has very big advantage, it is not only better to the activation effect of marmatite, and need under high pH value condition, not activate, this is significant aborning, it reduces lime and sulfuric acid consumption significantly in producing, reclaiming other sulfide minerals, cassiterite efficiently and comprehensively reclaiming rare precious metal provides necessary assurance.
The cost of activator of the present invention is lower than copper sulphate, also be that enterprise is under low basicity condition, carry out the grade and the rate of recovery of metals such as effective desulfurization, reduction sulfuric acid consumption, raising zinc and tin before realization zinc-sulfur highly effective separation and enrichment, the reselection operation, market prospects are fine.

Claims (2)

1. the flotation activating of marmatite and zincblende, said activator is the complex of copper and ammonia, it is characterized in that, the molecular formula of said complex is: [Cu (NH 3) x] 2+, X=1 in the formula~8.
2. the preparation method of the activator of claim 1, it is characterized in that, preparation section is as follows, said in following 2.1~2.3 operation " by the suitable metered proportions of chemical reaction " is meant the completeness in order to react, the additional proportion of central ion, ligand must satisfy the corresponding conditions of chemical reaction at least, under the principle of not wasting, excessive 0.5~10.0 quality % of the comparable central ion of ligand;
2.1, by the suitable metered proportions of chemical reaction ammonia is dissolved in a kind of solvent of selecting from the second alcohol and water, obtain first kind of solution (A), the concentration of solution is 0.5~25 quality %;
2.2, press the suitable metered proportions of chemical reaction with Cu (NO 3) 23H 2O or CuSO 45H 2O is dissolved in a kind of solvent of selecting from the second alcohol and water, obtains second kind of solution (B), and the concentration of solution is 0.5~50 quality %;
2.3, press the suitable metered proportions of chemical reaction with NaOH and Na 2CO 3Be dissolved in a kind of solvent of selecting from the second alcohol and water, obtain the third solution (C), the concentration of solution is 5~40 quality %;
2.4, stir down A solution gently joined in the B solution, mixing speed at 150~200 rev/mins, reacted under the room temperature 2~30 minutes, add C solution again, continue reaction 3~25 minutes under the room temperature, add a kind of solution of selecting from the second alcohol and water at last, reaction generates the crude product of solid precipitation;
2.5, with the reacted solution filtration under diminished pressure, use C 2H 5The sediment that the OH washing and filtering obtains blots with filter paper, then at air drying, promptly obtains the pure product of flotation activating.
CN201010124710.7A 2010-03-16 2010-03-16 Flotation activating agent of marmatite and blende and preparation method thereof Expired - Fee Related CN101816979B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105772226A (en) * 2016-03-16 2016-07-20 云南缘矿科技开发有限公司 Flotation activating agent for fine-grain cassiterite and preparing method of flotation activating agent
CN108940604A (en) * 2018-07-27 2018-12-07 攀枝花学院 Marmatite flotation activating and its preparation method and application
CN111659529A (en) * 2020-06-16 2020-09-15 昆明理工大学 Method for separating and utilizing micro-fine particle embedded lead-zinc oxide ore by dressing and smelting
CN111659531A (en) * 2020-06-16 2020-09-15 昆明理工大学 Method for flotation separation of lead-zinc sulfide ore containing intergrowth

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CN1817468A (en) * 2006-03-13 2006-08-16 昆明理工大学 Coal-dressing activator of ferrous blende and blende

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CN1680042A (en) * 2004-04-05 2005-10-12 黎东明 Step-by-step flotation technology for tin-lead-zinc sulfide ore
CN1817468A (en) * 2006-03-13 2006-08-16 昆明理工大学 Coal-dressing activator of ferrous blende and blende

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105772226A (en) * 2016-03-16 2016-07-20 云南缘矿科技开发有限公司 Flotation activating agent for fine-grain cassiterite and preparing method of flotation activating agent
CN108940604A (en) * 2018-07-27 2018-12-07 攀枝花学院 Marmatite flotation activating and its preparation method and application
CN111659529A (en) * 2020-06-16 2020-09-15 昆明理工大学 Method for separating and utilizing micro-fine particle embedded lead-zinc oxide ore by dressing and smelting
CN111659531A (en) * 2020-06-16 2020-09-15 昆明理工大学 Method for flotation separation of lead-zinc sulfide ore containing intergrowth
CN111659529B (en) * 2020-06-16 2021-02-19 昆明理工大学 Method for separating and utilizing micro-fine particle embedded lead-zinc oxide ore by dressing and smelting
CN111659531B (en) * 2020-06-16 2021-03-23 昆明理工大学 Method for flotation separation of lead-zinc sulfide ore containing intergrowth

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