CN100395356C - Flotation zinc oxide concentrate wet method smelting process - Google Patents
Flotation zinc oxide concentrate wet method smelting process Download PDFInfo
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- CN100395356C CN100395356C CNB2004100404374A CN200410040437A CN100395356C CN 100395356 C CN100395356 C CN 100395356C CN B2004100404374 A CNB2004100404374 A CN B2004100404374A CN 200410040437 A CN200410040437 A CN 200410040437A CN 100395356 C CN100395356 C CN 100395356C
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- zinc oxide
- flotation
- oxide concentrate
- wet method
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Abstract
The present invention relates to a smelting technique of a flotation zinc oxide concentrate wet method, which belongs to a smelting technological method, particularly to a smelting technique of a flotation zinc oxide concentrate wet method. The present invention is characterized in that (1), when zinc oxide concentrate obtained by flotation is leached by acid, a mixture of permanganate and quadrivalent manganese ions is put into leaching liquid; (2), after the leaching liquid enters a thickening tank, charcoal powder or active carbon bars are added in a purifying process of supernatant liquid for adsorbing remnant organic active molecules in the leaching liquid. The present invention solves the problems that flotation organic medicament generates foam layers in a zinc smelting and leaching process, plate burning and redissolving are generated for electrolysis, etc.; the smelting technique of a flotation zinc oxide concentrate wet method also solves the interface problem that lower grade industrial minerals can be put into zinc smelting production after being enriched.
Description
Technical field
The invention belongs to the smelting technology method, particularly the wet method smelting process of flotation zinc oxide concentrate.
Background technology
The production of zinc both at home and abroad all is to adopt zinc baking sand as raw material.In Yunnan, the part mine is arranged through unordered exploitation all the year round, the rich ore reserves descend day by day, and output contains the zinc grade in a large number and has been lower than 14% industrial zinc oxide raw ore, because it is lower to contain the zinc grade, fails directly to enter zinc and smelts flow process.For prolonging the length of service in mine, solve the mine rich ore and descend and the increasing severe situation in low-grade industrial ore deposit day by day, the enterprise that has has taked the low grade ore flotation, utilizes the zinc oxide concentrate that floatingly selects to make overtesting as zinc smeltery main raw material and explores.Find that in test the active substance molecule of the organic medicament of flotation is smelted in the leaching process at zinc can produce the foam layer that surface orientation is arranged, and has blocked the metal in the ore and has fully contacted with pickling liquor, influence is leached skill through index, causes metal loss; And residual flotation organism produces the burning plate, returns problems such as molten in electrolytic process.
Summary of the invention
Technical problem to be solved by this invention provides a kind of flotation zinc oxide concentrate wet method smelting process, its technology is simple, not increase equipment drops into, can solve the organic medicament of flotation and in zinc smelting leaching process, produce foam layer, and electrolysis produce burnt plate, returns problems such as molten, also solved low-grade industrial ore deposit through dropping into the production interface problem that zinc is smelted after the enrichment.
Solving the scheme that technical problem of the present invention adopts is: when the zinc oxide concentrate that (1) obtains flotation carries out acidleach, drop into permanganate and quaternary mn ion mixture in leach liquor; (2) after leach liquor enters thickener, adding carbon dust or activated carbon bar in the supernatant liquor scavenging process are adsorbed the organic active molecule that remains in the solution.
The present invention has also comprised following technical proposals: the input amount of permanganate and quaternary mn ion mixture is controlled at 1%～8% of ore weight, when the ferrous ion in the pulp slurry, when organic content is higher, should be how with some high mn ions, otherwise then can go easy, to reduce cost; The mixture that flotation reagent adopts pine tar and amino dodecane or stearylamine is lower than 14% zinc oxide raw ore or zinc sulphide raw ore and carries out flotation containing zinc.Through after the flotation, to the zinc oxide concentrate that obtains with pickling liquor by 3～8: 1 liquid-solid pulp recently, add acid solution and leached 1 hour～4 hours, the control extraction temperature is at 60 ℃～95 ℃; Ore pulp after the leaching adds the polyacrylamide flocculation, concentrates again, and the time is 10 minutes～80 minutes, and concentrated underflow is done the two-stage acid leaching operation, and processing temperature is 50 ℃～90 ℃, and the two-stage acid leaching ore pulp carries out full ore pulp press filtration.Filtrate returning sized mixing, and filter residue is stored up.
Technique scheme of the present invention can reach following effect:
(1) can utilize the flotation zinc oxide concentrate to substitute the oxidation zinc ore crude, the low grade ore resource is utilized well, even for the low grade ore that contains zinc 6～14%, the present invention also can obtain effect preferably.
(2) solve the bubbling situation that in leaching operation, occurs, need not to add separately defoamer, can reach simplification technology, avoided the loss of metallic zinc, the purpose that makes technology have more operability, reduce production costs.
(3) adsorb the organic active molecule that remains in the solution at clean-up stage adding carbon dust or activated carbon bar, help follow-up electrolysis process, avoid the generation of burning plate, returning molten phenomenon.
Embodiment
Embodiment 1
Get the low-grade zinc oxide raw ore that contains zinc 11%, carry out flotation as flotation agent, obtain containing the enrichment concentrate of zinc 30% with the mixture of pine tar and amino dodecane.Press 6: 1 liquid-solid pulp recently of zinc oxide concentrate and pickling liquor, adding acid solution leached 3 hours, extraction temperature drops into permanganate and the quaternary mn ion mixture that accounts for ore weight 5.6% simultaneously at 70 ℃, and the iron in the ore, silicon ion and organism are deviate from.Ore pulp after the leaching adds the polyacrylamide flocculation and concentrates, and concentration time is 35 minutes, and concentrated underflow is done the two-stage acid leaching operation, and processing temperature is 60 ℃.The two-stage acid leaching ore pulp carries out full ore pulp press filtration, and filtrate returning sized mixing, and filter residue is stored up; Concentrated supernatant send the purification operation, adds the activated carbon bar and adsorb the organic active molecule that remains in the solution in scavenging process, but obtain the solution of electrolysis.
Embodiment 2
Get the low-grade zinc oxide raw ore that contains zinc 8%, carry out flotation as flotation agent, obtain containing the enrichment concentrate of zinc 28% with the mixture of pine tar and amino dodecane.Press 7: 1 liquid-solid pulp recently of zinc oxide concentrate and pickling liquor, adding sour molten ripple leached 2.5 hours, extraction temperature drops into permanganate and the quaternary mn ion mixture that accounts for ore weight 3.0% simultaneously at 75 ℃, and the iron in the ore, silicon ion and organism are deviate from.Ore pulp after the leaching adds the polyacrylamide flocculation and concentrates, and concentration time is 54 minutes, and concentrated underflow is done the two-stage acid leaching operation, and processing temperature is 65 ℃.The two-stage acid leaching ore pulp carries out full ore pulp press filtration, and filtrate returning sized mixing, and filter residue is stored up; Concentrated supernatant send the purification operation, adds the activated carbon bar and adsorb the organic active molecule that remains in the solution in scavenging process, but obtain the solution of electrolysis.
Embodiment 3
Get the low-grade zinc oxide raw ore that contains zinc 6%, carry out flotation as flotation agent, obtain containing the enrichment concentrate of zinc 24% with the mixture of pine tar and amino dodecane.Press 6.5: 1 liquid-solid pulp recently of zinc oxide concentrate and pickling liquor, adding acid solution leached 2 hours, extraction temperature drops into permanganate and the quaternary mn ion mixture that accounts for ore weight 4.6% simultaneously at 80 ℃, and the iron in the ore, silicon ion and organism are deviate from.Ore pulp after the leaching adds the polyacrylamide flocculation and concentrates, and concentration time is 65 minutes, and concentrated underflow is done the two-stage acid leaching operation, and processing temperature is 70 ℃.The two-stage acid leaching ore pulp carries out full ore pulp press filtration, and filtrate returning sized mixing, and filter residue is stored up; Concentrated supernatant send the purification operation, adds the activated carbon bar and adsorb the organic active molecule that remains in the solution in scavenging process, but obtain the solution of electrolysis.
Be the production contrast of flotation zinc oxide concentrate of the present invention and zinc oxide raw ore below:
1, chemical analysis contrast
| Classification | Zn | Fe | SiO 2 | SiO 2 can | Silt content |
| Zinc oxide raw ore % | 23.35 | 17.35 | 9.75 | 2.50 | 40.35 |
| Zinc oxide concentrate % | 29.24 | 9.73 | 14.24 | 1.02 | 5～7 |
2, productivity analysis contrast in the leaching process
| Classification | Zn (g/l) | Fe (g/l) | Pb (mg/l) | SiO 2 (mg/l) | Co (mg/l) | Cd (mg/l) | The supernatant sedimentation | Filtration velocity kg/m 2.h |
| The zinc oxide raw ore | 121.50 | 14.21 | 16.23 | 241.60 | 8.13 | 157.50 | Well | 112.35 |
| Zinc oxide concentrate | 124.66 | 14.66 | 0.45 | 110.11 | 6.82 | 0.36 | Well | 137.99 |
3, new liquid produces analysis in the scavenging process
| Classification | Zn (g/l) | Fe (g/l) | Co (mg/l) | Cd (mg/l) | As (mg/l) | SiO 2 (mg/l) | Zinc powder unit consumption kg/t.Zn |
| The zinc oxide raw ore | 124.66 | 14.66 | 14.13 | 0.36 | 0.03 | 137.20 | 65.32 |
| Zinc oxide concentrate | 142.25 | 10.45 | 0.81 | 0.29 | 0.065 | 121.84 | 57.25 |
4, the productivity analysis in the electrolytic process
| Classification | Acid zinc ratio | Current efficiency % | The zinc metal sheet quality |
| The new liquid of zinc oxide raw ore | 2.3∶1 | 85.75 | 0#、1# |
| The new liquid of zinc oxide concentrate | 2.5∶1 | 88.47 | 0#、1# |
Claims (2)
1. flotation zinc oxide concentrate wet method smelting process is characterized in that:
When (1) zinc oxide concentrate that flotation is obtained carries out acidleach, drop into permanganate and quaternary mn ion mixture in leach liquor, input amount is 1%～8% of an ore weight;
(2) after leach liquor enters thickener, adding carbon dust or activated carbon bar in the supernatant liquor scavenging process are adsorbed the organic active molecule that remains in the solution.
2. by the described flotation zinc oxide concentrate of claim 1 wet method smelting process, it is characterized in that: zinc oxide concentrate that floatingly selects and pickling liquor are by 3～8: 1 liquid-solid pulp recently, adding acid solution leached 1 hour～4 hours, the control extraction temperature is 60 ℃～95 ℃, ore pulp after the leaching adds the polyacrylamide flocculation, and concentrate, time is 10 minutes～80 minutes, concentrated underflow is done the two-stage acid leaching operation, processing temperature is 50 ℃～90 ℃, the two-stage acid leaching ore pulp carries out full ore pulp press filtration, and filtrate returning sized mixing, and filter residue is stored up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100404374A CN100395356C (en) | 2004-08-10 | 2004-08-10 | Flotation zinc oxide concentrate wet method smelting process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100404374A CN100395356C (en) | 2004-08-10 | 2004-08-10 | Flotation zinc oxide concentrate wet method smelting process |
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| Publication Number | Publication Date |
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| CN1733948A CN1733948A (en) | 2006-02-15 |
| CN100395356C true CN100395356C (en) | 2008-06-18 |
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| CNB2004100404374A Expired - Fee Related CN100395356C (en) | 2004-08-10 | 2004-08-10 | Flotation zinc oxide concentrate wet method smelting process |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102631992B (en) * | 2012-04-25 | 2013-06-05 | 广西华锡集团股份有限公司 | Method for flotation of zinc oxide mineral under acidic condition |
| CN102703690A (en) * | 2012-06-15 | 2012-10-03 | 广西金山铟锗冶金化工有限公司 | Method for separating high-ferrosilicon complex zinc oxide lean ores through combined treatment |
| CN103894281B (en) * | 2012-12-28 | 2016-06-15 | 北京有色金属研究总院 | A kind of selecting smelting combination technique processing copper sulfide zinc and zinc oxide composite ore |
| CN103695664B (en) * | 2013-12-21 | 2014-12-10 | 株洲冶炼集团股份有限公司 | Novel purification process for zinc hydrometallurgy solution |
| CN104549763B (en) * | 2015-01-08 | 2017-01-25 | 广西大学 | Method for separating limonite from zinc oxide concentrate by flotation |
| CN106111350B (en) * | 2016-06-30 | 2018-02-06 | 福州大学 | A kind of method for floating of zinc oxide ore |
| CN110983068B (en) * | 2019-12-25 | 2022-08-19 | 昆明冶金研究院有限公司 | Defoaming agent and application thereof in zinc oxide concentrate leaching |
| CN113528816B (en) * | 2021-07-23 | 2022-11-18 | 昆明冶金研究院有限公司 | Method for directly acid-leaching and floating zinc oxide concentrate |
| CN115404354A (en) * | 2022-10-11 | 2022-11-29 | 云南金鼎锌业有限公司 | Method for improving zinc leaching rate of zinc-containing material by wet smelting |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2179194C2 (en) * | 1999-02-05 | 2002-02-10 | Акционерное общество закрытого типа "Экология и комплексная технология редких элементов и металлургических производств" | Method of hydrometallurgy preparation of zinc oxide |
| CN1414121A (en) * | 2002-09-17 | 2003-04-30 | 昆明冶研新材料股份有限公司 | Method of treating low grade zinc oxide ore |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2179194C2 (en) * | 1999-02-05 | 2002-02-10 | Акционерное общество закрытого типа "Экология и комплексная технология редких элементов и металлургических производств" | Method of hydrometallurgy preparation of zinc oxide |
| CN1414121A (en) * | 2002-09-17 | 2003-04-30 | 昆明冶研新材料股份有限公司 | Method of treating low grade zinc oxide ore |
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| CN1733948A (en) | 2006-02-15 |
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