CN1939845A - Comprehensive technology for treating acid waste water after extracting gallium, indium and germanium - Google Patents
Comprehensive technology for treating acid waste water after extracting gallium, indium and germanium Download PDFInfo
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- CN1939845A CN1939845A CN 200610036729 CN200610036729A CN1939845A CN 1939845 A CN1939845 A CN 1939845A CN 200610036729 CN200610036729 CN 200610036729 CN 200610036729 A CN200610036729 A CN 200610036729A CN 1939845 A CN1939845 A CN 1939845A
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Abstract
Extraction of gallium, indium and germanium acid waste water is carried out by adding gallium, indium and germanium waste water into inorganic acid or inorganic salt under acid condition, forming antimony, sin and arsenic into insoluble deposits, dispelling harmful gas by air, absorbing by alkaline liquid, filtering mixture of solid and liquid, separating to obtain insoluble deposits and clarified liquid, splitting flow, smelting by wetting method partly, neutralizing by base partly, depositing, removing impurities, filtering, separating, recovering for clarified liquid and discharging. It is simple, cheap and clean and has higher comprehensive utilization rate.
Description
[technical field]
The present invention relates to a kind of wastewater processing technology, especially relate to a kind of be adapted to extract gallium, indium, germanic acid wastewater extraction gallium, indium, germanic acid wastewater comprehensive technology for treating.
[background technology]
Dissipated metal gallium, indium, germanium are the propping materials of high-tech industry, and they are widely used in electronic industry, space flight and aviation, war industry.
The extraction of dissipated metal gallium, indium, germanium all is to adopt wet processing, extracts in the process of gallium, indium, germanium at extraction process, will produce raffinate, strip liquor and organic phase elutriant.Raffinate is the solution of pickling liquor behind extraction of indium, and strip liquor is the solution behind back extraction, displacement indium (or gallium, germanium), and the organic phase elutriant is with metal ion wash-outs such as the antimony in the organic phase, tin, iron, makes organic phase regeneration, the solution that can recycle.Raffinate, strip liquor, organic phase elutriant all are the integral parts of carrying indium, gallium, germanium waste water, but the amount of raffinate is maximum, also are more unmanageable waste water.
The improvement method that domestic most of dissipated metals smeltery adopts is the improvement method of not holding, and soon after all Waste Water Centralized, adds lime and neutralizes, then discharging.Its technological principle is: the lime neutralisation to neutral, is removed most of arsenic, cadmium, lead, antimony, tin with pH regulator, and metallic elements such as zinc allow emission standard, particularly arsenic, cadmium, plumbous all severe overweights but in fact often can't reach country.Simultaneously, produce a large amount of calcium sulfate, these calcium sulfate and arsenic, cadmium, lead, antimony, tin, the oxyhydroxide of metallic elements such as zinc mixes, and forms the mixture of rust, can not use as calcium sulfate, its other purposes have also been limited, also do not find industrial use at present, can only adopt the way of accumulation, occupied a large amount of accumulation places.
Waste water recycling is that mining industry, chemical engineering industry etc. produce the problem that the exigence of the more enterprise of waste water solves, but does not still have the relevant report of acid hydrometallurgy waste water comprehensive treatment technique so far.
[summary of the invention]
For the unserviceable shortcoming of trade effluent that is produced in the leaching process that overcomes existing dissipated metal gallium, indium, germanium, the invention provides a kind of can be with extraction gallium, indium, the germanic acid wastewater comprehensive technology for treating of waste water reuse after removal of impurities of being produced in dissipated metal element gallium, indium, the germanium leaching process.
The technical solution adopted for the present invention to solve the technical problems is: a kind of extraction gallium, indium, germanic acid wastewater comprehensive technology for treating mainly comprise the steps:
At first be that hydrometallurgy waste water is carried out acid removal of impurities, acid removal of impurities mainly comprises arsenic removal and removes metal ions such as antimony in the waste water, tin, lead, cadmium, the removal of impurities process adopt alkaline solution with the acidity control of solution below 6mol/L, add solid-state or gasiform mineral acid or inorganic salt, make arsenic, antimony, tin, lead etc. form the very little throw out of solubleness, carry out filtering separation then, the filtrate that obtains is for removing the liquid of metal ions such as antimony, arsenic, tin, lead, cadmium;
With the reuse of the waste water after an acid removal of impurities part to wet method smelting process, another part neutralizes to dezincify and handles, dezincify to handle is to add to carry out neutralizing treatment with the solid-state of acid-respons or liquid oxidatively thing or alkaline matter in waste water, acidic solution is adjusted to the pH value between the 3-10, add alkaliferous precipitation agent, formation Zinc compounds precipitation, carry out filtering separation then, the filtrate that obtains has been for having removed the waste water that comprises behind the zinc element, with the waste water recycling after dezincifying to wet method smelting process or back up to standard discharging.
Have obnoxious flavour in the waste water after described acid removal of impurities, the removal of this obnoxious flavour is to adopt air-blowing to separate to handle, and the air-blowing separating treatment is to be blown into gas in waste water, quickens flowing of waste water, and the obnoxious flavour in the waste water is separated.
The gas that described air-blowing separating treatment is blown in described waste water is air.
Absorb processing through isolated obnoxious flavour water of air-blowing separating treatment or basic solution.
Waste water after the acid removal of impurities of a part is carried out alkaline purification, and as adding lime treatment, waste water recycling after treatment is to wet method smelting process.
Positively effect of the present invention is: extraction gallium, indium, germanic acid wastewater are carried out removal of impurities and the processing that dezincifies, waste water after handling is carried out reuse, realized the comprehensive utilization of waste water resource, realized zero release, simple for process, production cost is low, cleaner production, help environmental protection, improved the comprehensive benefit of enterprise, extensively be adapted to extract the comprehensive utilization and the exploitation of dissipated metal element gallium, indium, germanium waste water.
[description of drawings]
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a process flow diagram of the present invention.
Among the figure: the 1-hydrometallurgy, the acid removal of impurities of 2-, the 3-air-blowing separates, the 4-processing that dezincifies, 5-adds alkali and neutralizes the 6-alkaline purification.
[embodiment]
A kind of extraction gallium, indium, germanic acid wastewater comprehensive technology for treating mainly comprise the steps:
At first be that extraction gallium, indium, germanic acid wastewater are carried out acid removal of impurities 2, acid removal of impurities 2 mainly comprises arsenic removal and removes metal ions such as antimony in the waste water, tin, lead, cadmium, the removal of impurities process adopt alkaline solution with the acidity control of solution below 6mol/L, add solid-state or gasiform mineral acid or inorganic salt, make arsenic, antimony, tin, lead, cadmium etc. form the very little throw out of solubleness, carry out filtering separation then, the filtrate that obtains is for removing the liquid of metal ions such as antimony, arsenic, tin, lead, cadmium;
With the reuse of the waste water after the acid removal of impurities 2 part to hydrometallurgy 1 technology, another part dezincifies and handles 4, dezincifying and handling 4 is to add in waste water and can carry out neutralizing treatment with the oxide compound or the alkaline matter of acid-respons, acidic solution is adjusted to the pH value is 3-10, add alkaliferous precipitation agent, the compound precipitation of elements such as formation zinc carries out filtering separation then, the filtrate that obtains is waited the later waste water of element for dezincifications that neutralized, with the waste water recycling after the dezincification to hydrometallurgy 1 technology; Or the waste water after the acid removal of impurities 2 of a part carried out alkaline purification 6, as adding lime treatment, waste water recycling after treatment is to hydrometallurgy 1 technology.
There is obnoxious flavour in the waste water after described acid removal of impurities 2, the removal of this obnoxious flavour is to adopt air-blowing to separate 3 to handle, and it is to be blown into gas in waste water that air-blowing separates 3 processing, and this is blown into gas and generally adopts air, quicken flowing of waste water, the obnoxious flavour in the waste water is separated.Separating 3 through air-blowing handles that isolated obnoxious flavour waters or basic solution add in the alkali and 5 absorbs processing.
The present invention carries out removal of impurities to extraction gallium, indium, germanic acid wastewater and dezincifies and handle, waste water after handling is carried out reuse, realize the comprehensive utilization of waste water resource, realized zero release, simple for process, production cost is low, cleaner production helps environmental protection, has improved the comprehensive benefit of enterprise, extensively be adapted to the comprehensive treating process of hydrometallurgy waste water, particularly extract the comprehensive utilization and the exploitation of gallium, indium, germanium waste water.
Claims (5)
1, a kind of extraction gallium, indium, germanic acid wastewater comprehensive technology for treating is characterized in that: mainly comprise the steps:
At first be that extraction gallium, indium, germanic acid wastewater are carried out acid removal of impurities, acid removal of impurities mainly comprises arsenic removal and removes metal ions such as antimony in the waste water, tin, lead, cadmium, the removal of impurities process adopt alkaline solution with the acidity control of solution below 6mol/L, add solid-state or gasiform mineral acid or inorganic salt, make arsenic, antimony, tin, lead etc. form the very little throw out of solubleness, carry out filtering separation then, the filtrate that obtains is for removing the liquid of metal ions such as antimony, arsenic, tin, lead, cadmium;
With the reuse of the waste water after an acid removal of impurities part to wet method smelting process, another part neutralizes to dezincify and handles, dezincify to handle is to add to carry out neutralizing treatment with the solid-state of acid-respons or liquid oxidatively thing or alkaline matter in waste water, acidic solution is adjusted to the pH value between the 3-10, add alkaliferous precipitation agent, form Zinc compounds and precipitate, carry out then filtering separation, the filtrate that obtains has been for having removed the waste water that comprises behind the zinc element, with the waste water recycling after dezincifying to wet method smelting process or back up to standard discharging.
2, extraction gallium as claimed in claim 1, indium, germanic acid wastewater comprehensive technology for treating, it is characterized in that: have obnoxious flavour in the waste water after described acid removal of impurities, the removal of this obnoxious flavour is to adopt air-blowing to separate to handle, the air-blowing separating treatment is to be blown into gas in waste water, quicken flowing of waste water, the obnoxious flavour in the waste water is separated.
3, extraction gallium as claimed in claim 2, indium, germanic acid wastewater comprehensive technology for treating, it is characterized in that: the gas that described air-blowing separating treatment is blown in described waste water is air.
4, as claim 2 or 3 described extraction galliums, indium, germanic acid wastewater comprehensive technology for treating, it is characterized in that: carry out water or basic solution through the isolated obnoxious flavour of air-blowing separating treatment and absorb and handle.
5, extraction gallium as claimed in claim 1, indium, germanic acid wastewater comprehensive technology for treating is characterized in that: the waste water after the acid removal of impurities of a part is carried out alkaline purification, and as adding lime treatment, waste water recycling after treatment is to wet method smelting process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610036729XA CN100500590C (en) | 2006-07-31 | 2006-07-31 | Comprehensive technology for treating acid waste water for extracting gallium, indium and germanium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610036729XA CN100500590C (en) | 2006-07-31 | 2006-07-31 | Comprehensive technology for treating acid waste water for extracting gallium, indium and germanium |
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| Publication Number | Publication Date |
|---|---|
| CN1939845A true CN1939845A (en) | 2007-04-04 |
| CN100500590C CN100500590C (en) | 2009-06-17 |
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| CNB200610036729XA Expired - Fee Related CN100500590C (en) | 2006-07-31 | 2006-07-31 | Comprehensive technology for treating acid waste water for extracting gallium, indium and germanium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113387472A (en) * | 2021-06-07 | 2021-09-14 | 先导薄膜材料有限公司 | Method for removing cadmium and thallium from indium-containing wastewater |
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2006
- 2006-07-31 CN CNB200610036729XA patent/CN100500590C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113387472A (en) * | 2021-06-07 | 2021-09-14 | 先导薄膜材料有限公司 | Method for removing cadmium and thallium from indium-containing wastewater |
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| CN100500590C (en) | 2009-06-17 |
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Granted publication date: 20090617 Termination date: 20100731 |