CN102321815A - Method for extracting indium from indium-containing zinc oxide - Google Patents
Method for extracting indium from indium-containing zinc oxide Download PDFInfo
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- CN102321815A CN102321815A CN201110286096A CN201110286096A CN102321815A CN 102321815 A CN102321815 A CN 102321815A CN 201110286096 A CN201110286096 A CN 201110286096A CN 201110286096 A CN201110286096 A CN 201110286096A CN 102321815 A CN102321815 A CN 102321815A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention relates to a process method for extracting indium from indium-containing zinc oxide. The method comprises that: indium-containing zinc oxide is subjected to neutral leaching, wherein zinc and indium are leached in a solution, indium stayed in the residue is enriched; the neutral leached residue is subjected to acid leaching; the resulting acid leachate is subjected to twice cycle leaching, wherein the indium content in the resulting leachate is more than 10 g/L; then the leachate is subjected to a displacement reaction through zinc powder to generate crude indium. With the method provided by the present invention, the indium is extracted from the indium-containing zinc oxide through adopting the neutral leaching process, the acid leaching process and the zinc powder displacement process. The method has advantages of simple process, high recovery rate, convenient operation, less investment on equipment, and low production cost, and is applicable for extraction of the indium from the indium-containing zinc oxide.
Description
Technical field
The present invention relates to a kind of Non-ferrous Metallurgy field, particularly a kind of method of from contain indium zinc oxide, extracting indium.
Background technology
From contain indium zinc oxide, extract indium, the technology of employing is at present: neutral dezincify, the cadmium of leaching, and carry out acidity then and leach, valuable metals such as indium are leached in the entering solution, add the heavy silicon of gelatine again, liquid is used P behind the heavy silicon
204Carry out extraction of indium, hydrochloric acid back extraction indium, the strip liquor that contains indium be with aluminium sheet metathetical sponge indium, sponge indium alkali fusion dealuminzation, zinc, and vacuum distilling is cast anode after taking off cadmium, is electrolytic solution with indium sulfate, sodium-chlor weakly acidic solution, is that negative electrode carries out electrolysis with the titanium plate.There are problems such as complex manufacturing, production cost height in this technology.
Summary of the invention
The objective of the invention is defective, a kind of method of from contain indium zinc oxide, extracting indium is provided to the method existence of from contain indium zinc oxide, extracting indium at present.This method is carried out neutrality leaching, the acid leaching and the zinc dust precipitation operation through containing indium zinc oxide, solves from containing the technical problem that indium zinc oxide extracts indium.
The scheme that technical solution problem of the present invention is adopted is: contain indium zinc oxide and leach through neutral earlier; Zinc, cadmium are leached in the entering solution; Indium is stayed and is obtained enrichment in the slag, soaks slag in inciting somebody to action then and carries out the acidity leaching, and acid leaching solution leaches through secondary circulation; Make leach liquor contain indium and reach more than the 10g/L, replace with zinc powder again and generate thick indium.
Positively effect, the inventive method is extracted indium through neutral leaching, the acid leaching and the zinc dust precipitation operation from contain indium zinc oxide.Have that technical process is simple, the recovery is high, easy to operate, facility investment is few, production cost is low advantage.Suitable application of from contain indium zinc oxide, extracting indium.
Description of drawings:
Fig. 1 is a flow chart of the present invention
Among the figure, 1, neutral operation 2, acid operation 3, acid operation 4, the zinc dust precipitation operation of leaching of secondary of leaching once of leaching
Concrete embodiment
According to description of drawings:
1, the neutral operation that leaches: will contain indium zinc oxide and mix with neutral leach liquor by liquid-solid ratio 4～6:1; The initial acidity of neutral leach liquor is 20～40g/L; In temperature is under 70～80 ℃ of conditions, and through leaching reaction 2～3 hours, endpoint pH is to carry out neutrality leaching under 4.5～5.0 the technical qualification; Carry out solid-liquid separation after neutral leaching is accomplished, separate leach liquor and be used for extracting zinc, cadmium; Leached mud gets into once the acid operation that leaches;
2, once acidity leaches operation: leached mud is joined in an acid leaching solution by liquid-solid ratio 3～5:1 carry out once acid the leaching, the leaching process temperature is controlled at 60～90 ℃, and in 4～6 hours reaction times, terminal point contains acid 20～40g/L; After the solid-liquid separation, analyze when containing indium < then return neutral the leaching during 10g/L, if>10g/L in acid leaching solution and then get into the zinc dust precipitation operation, once acid leached mud gets into the acid operation that leaches of secondary;
3, the acid operation that leaches of secondary: once adding the acidic twice leach liquor in the acid leached mud, liquid-solid ratio is controlled to be 4～6:1, and temperature is at 60～90 ℃, and the reaction times is 4～6 hours, and terminal point contains acid 100～150g/L; Solid-liquid separation secondary acid leaching solution returns once the acid operation that leaches, and the acid leached mud of secondary returns lead system and reclaims plumbous;
4, zinc dust precipitation operation: in an acid leaching solution, add zinc powder and carry out the displacement of indium, the replacement process temperature is controlled at 50～60 ℃, and the reaction times is 4～6 hours, and endpoint pH is 2.5～3, gets thick indium after the displacement.
Useful effect of the present invention: leach through neutral earlier because employing contains indium zinc oxide; Zinc, cadmium are leached in the entering solution, and indium is stayed and is obtained enrichment in the slag, soaks slag in inciting somebody to action then and carries out the acidity leaching; Acid leaching solution leaches through secondary circulation, is replaced as thick indium with zinc powder again.Have that technical process is simple, the recovery is high, easy to operate, advantage such as facility investment is few, production cost is low.
Embodiment:
Embodiment 1:
Contain indium zinc oxide 1000Kg; (In0.58% Zn55.05% Cd7.60% Fe0.75%) in the aqueous sulfuric acid of 70～80 ℃ of temperature, by liquid-solid ratio 5:1, carries out neutrality and leaches earlier; 3 hours reaction times; Endpoint pH is 4.5, zinc, cadmium is leached get in the solution, and indium is stayed in the slag and obtained enrichment.Soak slag 70～80 ℃ of temperature in inciting somebody to action then, liquid-solid ratio 4:1 carries out once acid the leaching, and extraction time 6 hours, terminal point contain sour 40g/L.Once acid leached mud by liquid-solid ratio 4:1, carries out the acid leaching of secondary in 70～80 ℃ of aqueous sulfuric acids of temperature, extraction time 6 hours, and terminal point contains sour 100g/L.The acid leaching of secondary is returned and is carried out once acid the leaching.An acid leaching solution leaches through secondary circulation, and leach liquor contains indium and reaches more than the 10g/L, with zinc powder 50～60 ℃ of temperature; Replace, the pH value is 3 when time swap 5 hours, the terminal point of zinc dust precipitation; The metathetical product is thick indium, weigh 55Kg, thick indium contains indium 90%.
Embodiment 2:
Contain indium zinc oxide 1000Kg; (In0.50% Zn52.16% Cd6.13% Fe1.20%) in 70～80 ℃ of aqueous sulfuric acids of temperature, by liquid-solid ratio 4:1, carries out neutrality and leaches earlier; 3 hours reaction times; Endpoint pH is 4.5, zinc, cadmium is leached get in the solution, and indium is stayed in the slag and obtained enrichment.Soak slag in 80～90 ℃ of aqueous sulfuric acids of temperature in inciting somebody to action then, by liquid-solid ratio 6:1, carry out once acid the leaching, extraction time 4 hours, terminal point contain sour 30g/L.Once acid leached mud is 80～90 ℃ of temperature, and liquid-solid ratio 6:1 carries out the acid leaching of secondary, extraction time 4 hours, and terminal point contains sour 150g/L.The acid leaching of secondary is returned and is carried out once acid the leaching.An acid leaching solution leaches through secondary circulation, make leach liquor contain indium and reach more than the 10g/L, with zinc powder 50～60 ℃ of temperature; Replace, it is that the pH value of displacement liquid is 3 that time swap 4 hours, zinc powder are put terminal point; The metathetical product is thick indium, weigh thick indium 48Kg, thick indium contains indium 91%.
Claims (1)
1. method of from contain indium zinc oxide, extracting indium is characterized in that:
1), the neutral operation that leaches: will contain indium zinc oxide and mix with neutral leach liquor by liquid-solid ratio 4～6:1; The initial acidity of neutral leach liquor is 20～40g/L; In temperature is under 70～80 ℃ of conditions; Through leaching reaction 2～3 hours, endpoint pH is to carry out neutrality leaching under 4.5～5.0 the technical qualification; Carry out solid-liquid separation after neutral leaching is accomplished, separate leach liquor and be used for extracting zinc, cadmium; Leached mud gets into once the acid operation that leaches;
2), once acidity leaches operation: leached mud is joined in an acid leaching solution by liquid-solid ratio 3～5:1 carry out once acid the leaching, the leaching process temperature is controlled at 60～90 ℃, and in 4～6 hours reaction times, terminal point contains acid 20～40g/L; After the solid-liquid separation, analyze when containing indium < then return neutral the leaching during 10g/L, if>10g/L in acid leaching solution and then get into the zinc dust precipitation operation, once acid leached mud gets into the acid operation that leaches of secondary;
3), the acid operation that leaches of secondary: once adding the acidic twice leach liquor in the acid leached mud, liquid-solid ratio is controlled to be 4～6:1, and temperature is at 60～90 ℃, and the reaction times is 4～6 hours, and terminal point contains acid 100～150g/L; Solid-liquid separation secondary acid leaching solution returns once the acid operation that leaches, and the acid leached mud of secondary returns lead system and reclaims plumbous;
4), zinc dust precipitation operation: in an acid leaching solution, add zinc powder and carry out the displacement of indium, the replacement process temperature is controlled at 50～60 ℃, and the reaction times is 4～6 hours, and endpoint pH is 2.5～3, gets thick indium after the displacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110286096A CN102321815A (en) | 2011-09-24 | 2011-09-24 | Method for extracting indium from indium-containing zinc oxide |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110286096A CN102321815A (en) | 2011-09-24 | 2011-09-24 | Method for extracting indium from indium-containing zinc oxide |
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| CN102321815A true CN102321815A (en) | 2012-01-18 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103173625A (en) * | 2013-04-19 | 2013-06-26 | 长沙矿冶研究院有限责任公司 | Method for efficiently leaching indium from zinc oxide smoke |
| CN104141046A (en) * | 2014-07-24 | 2014-11-12 | 安阳市岷山有色金属有限责任公司 | Method for carrying out indium and zinc recycling on indium zinc oxide soot |
| CN104651617A (en) * | 2015-02-16 | 2015-05-27 | 广西德邦科技有限公司 | Method for extracting indium from alkaline residues |
| CN105087927A (en) * | 2015-08-11 | 2015-11-25 | 湖南水口山有色金属集团有限公司 | Method for increasing leaching rate of zinc and indium in second zinc oxide |
| CN108823405A (en) * | 2018-07-09 | 2018-11-16 | 刘罗平 | A kind of dilute immersion liquid method of wet process refining indium |
| CN110093510A (en) * | 2019-05-08 | 2019-08-06 | 铜仁学院 | A method of the comprehensively recovering valuable metal of flue dust containing arsenical copper |
| CN110607441A (en) * | 2019-10-16 | 2019-12-24 | 葫芦岛锌业股份有限公司 | Method for recovering indium from lead copper matte |
| CN113862496A (en) * | 2021-08-18 | 2021-12-31 | 西北矿冶研究院 | Method for extracting indium from indium-containing reverberatory furnace smoke dust |
| CN115896487A (en) * | 2022-11-25 | 2023-04-04 | 沈阳有色金属研究院有限公司 | Method for enriching and extracting indium from tin smelting smoke dust |
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2011
- 2011-09-24 CN CN201110286096A patent/CN102321815A/en active Pending
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103173625A (en) * | 2013-04-19 | 2013-06-26 | 长沙矿冶研究院有限责任公司 | Method for efficiently leaching indium from zinc oxide smoke |
| CN103173625B (en) * | 2013-04-19 | 2014-12-10 | 长沙矿冶研究院有限责任公司 | Method for efficiently leaching indium from zinc oxide smoke |
| CN104141046A (en) * | 2014-07-24 | 2014-11-12 | 安阳市岷山有色金属有限责任公司 | Method for carrying out indium and zinc recycling on indium zinc oxide soot |
| CN104651617A (en) * | 2015-02-16 | 2015-05-27 | 广西德邦科技有限公司 | Method for extracting indium from alkaline residues |
| CN105087927A (en) * | 2015-08-11 | 2015-11-25 | 湖南水口山有色金属集团有限公司 | Method for increasing leaching rate of zinc and indium in second zinc oxide |
| CN108823405A (en) * | 2018-07-09 | 2018-11-16 | 刘罗平 | A kind of dilute immersion liquid method of wet process refining indium |
| CN110093510A (en) * | 2019-05-08 | 2019-08-06 | 铜仁学院 | A method of the comprehensively recovering valuable metal of flue dust containing arsenical copper |
| CN110607441A (en) * | 2019-10-16 | 2019-12-24 | 葫芦岛锌业股份有限公司 | Method for recovering indium from lead copper matte |
| CN113862496A (en) * | 2021-08-18 | 2021-12-31 | 西北矿冶研究院 | Method for extracting indium from indium-containing reverberatory furnace smoke dust |
| CN115896487A (en) * | 2022-11-25 | 2023-04-04 | 沈阳有色金属研究院有限公司 | Method for enriching and extracting indium from tin smelting smoke dust |
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Application publication date: 20120118 |