CN106834698A - A kind of method of enriching and reclaiming indium in acid solution containing indium from low concentration - Google Patents
A kind of method of enriching and reclaiming indium in acid solution containing indium from low concentration Download PDFInfo
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- CN106834698A CN106834698A CN201710038242.3A CN201710038242A CN106834698A CN 106834698 A CN106834698 A CN 106834698A CN 201710038242 A CN201710038242 A CN 201710038242A CN 106834698 A CN106834698 A CN 106834698A
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- indium
- slag
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- low concentration
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- 229910052738 indium Inorganic materials 0.000 title claims abstract description 182
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 title claims abstract description 182
- 239000002253 acid Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000002893 slag Substances 0.000 claims abstract description 71
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 40
- 239000011701 zinc Substances 0.000 claims abstract description 40
- 238000000926 separation method Methods 0.000 claims abstract description 27
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000011084 recovery Methods 0.000 claims abstract description 25
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 21
- 238000002386 leaching Methods 0.000 claims abstract description 18
- 229910052742 iron Inorganic materials 0.000 claims abstract description 13
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 238000009854 hydrometallurgy Methods 0.000 claims abstract description 7
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 10
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- 239000000779 smoke Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 150000002739 metals Chemical class 0.000 abstract description 2
- 230000000505 pernicious effect Effects 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000000605 extraction Methods 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 229910052785 arsenic Inorganic materials 0.000 description 4
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 4
- NJWNEWQMQCGRDO-UHFFFAOYSA-N indium zinc Chemical compound [Zn].[In] NJWNEWQMQCGRDO-UHFFFAOYSA-N 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052984 zinc sulfide Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- RBFQJDQYXXHULB-UHFFFAOYSA-N arsane Chemical class [AsH3] RBFQJDQYXXHULB-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- QYHNIMDZIYANJH-UHFFFAOYSA-N diindium Chemical compound [In]#[In] QYHNIMDZIYANJH-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- IGUXCTSQIGAGSV-UHFFFAOYSA-K indium(iii) hydroxide Chemical compound [OH-].[OH-].[OH-].[In+3] IGUXCTSQIGAGSV-UHFFFAOYSA-K 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical compound [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 1
- 229910052569 sulfide mineral Inorganic materials 0.000 description 1
- 235000010269 sulphur dioxide Nutrition 0.000 description 1
- 239000004291 sulphur dioxide Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B58/00—Obtaining gallium or indium
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of method of enriching and reclaiming indium in acid solution containing indium from low concentration, belong to technical field of wet metallurgy.Present invention addition preneutralization agent in the acid solution containing low concentration indium carries out preneutralization reaction, and preneutralization slag and solution A are obtained after solid-liquor separation, and preneutralization slag delivers to zinc hydrometallurgy leaching system and reclaims zinc；Nertralizer is added in solution A, neutralization reaction solid-liquor separation is carried out and is obtained neutralizing heavy indium slag and solution B, solution B delivers to zinc-iron separation and recovery system and carries out zinc, iron separation, and the heavy indium slag of neutralization is returned in the acid solution that addition contains low concentration indium；Circulate operation preneutralization and neutralization reaction step, the heavy indium slag of the neutralization for obtaining as enriched indium slag.Two sections of neutralization modes that the inventive method preneutralization is neutralized, reduce and neutralize the heavy indium quantity of slag, improve the amount containing indium in indium slag；Processing procedure free from admixture of the present invention introduces, without pernicious gas pollution, with recovery rate of valuable metals it is high, technological process is simple, clean and effective, energy-conserving and environment-protective the characteristics of.
Description
Technical field
The present invention relates to a kind of method of enriching and reclaiming indium in acid solution containing indium from low concentration, belong to hydrometallurgy skill
Art field.
Background technology
Indium as a kind of rare and scatter element, in nature seldom formed independent deposit, mainly with dispersity association zinc,
In the sulfide minerals such as lead, tin, copper, wherein zincblende is its main source, and especially the content of indium is reachable in complicated marmatite
To hundreds of g tons, with economic worth higher.Therefore, the recovery of current indium is mainly derived from the middle slag charge of zinc abstraction.
Due to the indium in raw material, its content is relatively low for zinc-iron etc., and indium concentration is usual in the leachate that leaching is obtained
Mostly containing metal ions such as concentration sulfuric acid higher, zinc, iron, copper in only tens to hundreds of milligrams per liter, and leachate, make
It is difficult into indium separation and concentration.Traditional processing method has three kinds, and first method is：Such as ZL200510010944.8 will contain low
The acid leaching solution of concentration indium roasts ore deposit or zinc oxide neutralization precipitation using zinc, indium is hydrolyzed to form indium hydroxide precipitation and enters indium slag
In, so as to get preliminary concentration, the indium slag of indium mass fraction 0.5 ~ 2% is obtained, then indium slag is used into secondary leaching, leachate
Indium metal is obtained through extraction, back extraction, displacement, electrolysis.The technological process is long, and indium spread loss is serious, causes the rate of recovery of indium low,
Resource serious waste, and complex technical process are caused, labour intensity is big, and production cost is high.Second method is：Such as
ZL201410302226.7 etc. adds zinc powder or zinc dross to enter the heavy indium of line replacement to the leachate containing low concentration indium, obtains indium
Indium slag of the mass fraction more than 1%, then indium slag is used into secondary leaching, leachate is obtained through extraction, back extraction, displacement, electrolysis
Indium metal.The technological process is simpler than first method, and indium recovery increases, but zinc dust precipitation process easily produces arsenic
, there is security risk in hydrogen severe toxicity gas, and zinc consumption amount is big, and production cost is high.The third method is：Such as
ZL201410762323.4 will directly be extracted containing the leachate of low concentration indium, obtain load organic oppositing back-extraction, then from back extraction
Recovery indium is replaced in liquid.The method technological process is further shortened, and is expected to turn into the developing direction of indium recovery technology.But due to leaching
Go out in liquid that indium concentration is low, cause the maximum difficult point for existing using the method to be at present that indium concentration ratio is small, indium concentration in strip liquor
Low, strip liquor volume is big, residual hydrochloric acid concentration is high, causes the displacement recovery indium process rate of recovery low, and greatly, displacement is useless for reagent consumption
Water process is difficult.
In a kind of Indium-Zinc concentrates high from high ferro of patent of invention CN201110286157 extract zinc indium and reclaim iron method and
The present inventor discloses in a kind of methods of independent treatment high-iron zinc sulfide concentrate of patent of invention CN201310308061
Using the method in preneutralization-zinc powder with the heavy indium of displacement, but because the indium concentration of solution is relatively low, cause the not high containing indium of indium slag,
And using harm such as the arsenic hydrides being also easy to produce with the heavy indium of displacement in zinc powder, simultaneously because zinc powder consumption is big, heavy indium is relatively costly.
The content of the invention
A kind of problem that the present invention exists for prior art, there is provided enriching and recovering in acid solution containing indium from low concentration
The method of indium, reduces and neutralizes the heavy indium quantity of slag, improves the amount containing indium in indium slag.
The method of enriching and reclaiming indium, comprises the following steps that in a kind of acid solution containing indium from low concentration：
（1）Preneutralization agent is added in acid solution of the low concentration containing indium, preneutralization is anti-under 50 ~ 90 DEG C of temperature, stirring condition
Should be 1.5 ~ 2.5 to solution ph, preneutralization slag and solution A are obtained after solid-liquor separation, preneutralization slag delivers to zinc hydrometallurgy leaching
System reclaims zinc；
（2）In step（1）Nertralizer is added in resulting solution A, neutralization reaction is to solution under 50 ~ 90 DEG C of temperature, stirring condition
PH value is 4.0 ~ 5.0, and solid-liquor separation obtains neutralizing heavy indium slag and solution B, solution B deliver to zinc-iron separation and recovery system carry out zinc,
Iron is separated；
（3）By step（2）Gained is neutralized in new acid solution of the low concentration containing indium of heavy indium slag addition；Reality while preneutralization
Leaching of existing acid solution of the low concentration containing indium to the heavy indium slag of neutralization, improves the concentration of indium in acid solution；
（4）Circulate operation step（1）~（3）To step（2）The heavy indium slag of neutralization in the mass percent content of indium be not less than 1%,
The heavy indium slag of neutralization is enriched indium slag and delivers to indium separation and recovery system recovery indium.
The step（1）Acid solution of the low concentration containing indium is for sulphur dioxide reduction leaching in wet zinc-making system or vulcanizes
Solution after zinc concentrate reducing leaching, or the solution of reduction treatment has been carried out in wet zinc-making system, sulfuric acid 20 is contained in solution
~ 60g/L, 50 ~ 200mg/L of indium, 80 ~ 120g/L of zinc, 5 ~ 40g/L of iron；
The step（1）The solid-to-liquid ratio g of acid solution and preneutralization agent of the middle low concentration containing indium:L is 30 ~ 120:1；
Further, step（1）Preneutralization agent is zinc calcine, zinc smoke or Second-rate zinc oxide powder；
The step（2）The solid-to-liquid ratio g of middle solution A and nertralizer:L is 10 ~ 50:1；
Further, step（2）Nertralizer is zinc calcine, zinc smoke or Second-rate zinc oxide powder.
Circulate operation step（1）~（3）, the concentration of indium in solution A can be made for 200 ~ 3000mg/L, neutralize indium in heavy indium slag
Mass percent content reach 1 ~ 10%, in solution B indium concentration be less than 5mg/L.
The beneficial effects of the invention are as follows：
（1）Using the inventive method to acid solution of the low concentration containing indium using the most of acid of first preneutralization, then neutralize it is heavy
Two sections of neutralization modes of " preneutralization-neutralization " of indium, reduce and neutralize the heavy indium quantity of slag, improve the amount containing indium of indium slag；
（2）The inventive method will neutralize heavy indium slag return next stage and carry out preneutralization, and leaching simultaneously is neutralized while preneutralization
" neutralize-leach " circulation pattern of heavy indium slag, improves indium content in solution, so as to further increase the indium content of heavy indium slag；
（3）Processing procedure free from admixture of the invention introduces, without pernicious gas pollution, with recovery rate of valuable metals is high, technique stream
Journey is simple, clean and effective, energy-conserving and environment-protective the characteristics of.
Brief description of the drawings
Fig. 1 is process chart of the invention.
Specific embodiment
With reference to specific embodiment, the invention will be further described.
Embodiment 1：The present embodiment low concentration containing indium acid solution in containing 20.1g/L sulfuric acid, 50.3mg/L indiums,
119.8g/L zinc, 5g/L iron and trace copper, arsenic；
As shown in figure 1, it is a kind of from low concentration containing indium acid solution in enriching and reclaiming indium method, comprise the following steps that：
（1）According to solid-to-liquid ratio g:L is 30:1 ratio, adds preneutralization agent in acid solution of the low concentration containing indium（It is wherein pre-
Nertralizer is zinc calcine）, the preneutralization reaction 60min under temperature 50 C, stirring condition, solution ph is 2.5, after solid-liquor separation
Preneutralization slag and solution A are obtained, the concentration of indium is 56.1mg/L in solution A, preneutralization slag is delivered to zinc hydrometallurgy leaching system and returned
Receive zinc；
（2）According to solid-to-liquid ratio g:L is 10:1 ratio, in step（1）Nertralizer is added in resulting solution A（Wherein nertralizer is
Second-rate zinc oxide powder）, the neutralization reaction 20min under 90 DEG C of temperature, stirring condition, solution ph is 4.5, and solid-liquor separation is neutralized
Heavy indium slag and solution B, solution B deliver to zinc-iron separation and recovery system and carry out zinc, iron separation, neutralize the quality percentage of indium in heavy indium slag
Number content is 0.28%；
（3）By step（2）Gained is neutralized in new acid solution of the low concentration containing indium of heavy indium slag addition；Reality while preneutralization
Leaching of existing acid solution of the low concentration containing indium to the heavy indium slag of neutralization, improves the concentration of indium in acid solution；
（4）Circulate operation step（1）~（3）To step（1）Solution A in indium concentration be 200mg/L, then carry out step（2）
Obtain neutralizing heavy indium slag and solution B, the mass percent content for neutralizing indium in heavy indium slag is 1.06%, neutralize heavy indium slag and be richness
Collection indium slag delivers to indium separation and recovery system recovery indium；
The mass percent content of indium is 1.06% in the present embodiment gained enriched indium slag, and indium concentration is 4.1mg/L in solution B.
Embodiment 2：The present embodiment low concentration contains 43g/L sulfuric acid, 110mg/L indiums, 103g/L in the acid solution containing indium
Zinc, 22 g/L iron and trace copper, arsenic；
As shown in figure 1, it is a kind of from low concentration containing indium acid solution in enriching and reclaiming indium method, comprise the following steps that：
（1）According to solid-to-liquid ratio g:L is 80:1 ratio, adds preneutralization agent in acid solution of the low concentration containing indium（It is wherein pre-
Nertralizer is Second-rate zinc oxide powder）, the preneutralization reaction 20min under 90 DEG C of temperature, stirring condition, solution ph is 2.0, and liquid divides admittedly
Preneutralization slag and solution A are obtained after, the concentration of indium is 139mg/L in solution A, preneutralization slag delivers to zinc hydrometallurgy leaching system
Reclaim zinc；
（2）According to solid-to-liquid ratio g:L is 25:1 ratio, in step（1）Nertralizer is added in resulting solution A（Wherein nertralizer is
Zinc calcine）, the neutralization reaction 60min under temperature 70 C, stirring condition, solution ph is 4.0, and solid-liquor separation obtains neutralizing heavy indium
Slag and solution B, solution B deliver to zinc-iron separation and recovery system and carry out zinc, iron separation, and the mass percent for neutralizing indium in heavy indium slag contains
Measure is 0.59%；
（3）By step（2）Gained is neutralized in new acid solution of the low concentration containing indium of heavy indium slag addition；Reality while preneutralization
Leaching of existing acid solution of the low concentration containing indium to the heavy indium slag of neutralization, improves the concentration of indium in acid solution；
（4）Circulate operation step（1）~（3）To step（1）Solution A in indium concentration be 1580mg/L, then carry out step
（2）Obtain neutralizing heavy indium slag and solution B, the mass percent content for neutralizing indium in heavy indium slag is 5.3%, neutralize heavy indium slag and be
Enriched indium slag delivers to indium separation and recovery system recovery indium；
The mass percent content of indium is 5.3% in the present embodiment gained enriched indium slag, and indium concentration is 4.6mg/L in solution B.
Embodiment 3：The present embodiment low concentration contains 60g/L sulfuric acid, 200mg/L indiums, 80.2g/L in the acid solution containing indium
Zinc, 39.7g/L iron and trace copper, arsenic；
As shown in figure 1, it is a kind of from low concentration containing indium acid solution in enriching and reclaiming indium method, comprise the following steps that：
（1）According to solid-to-liquid ratio g:L is 120:1 ratio, adds preneutralization agent in acid solution of the low concentration containing indium（It is wherein pre-
Nertralizer is zinc smoke）, the preneutralization reaction 90min under temperature 70 C, stirring condition, solution ph is 1.5, solid-liquor separation
After obtain preneutralization slag and solution A, in solution A the concentration of indium be 221mg/L, preneutralization slag deliver to zinc hydrometallurgy leaching system return
Receive zinc；
（2）According to solid-to-liquid ratio g:L is 50:1 ratio, in step（1）Nertralizer is added in resulting solution A（Wherein nertralizer is
Zinc smoke）, the neutralization reaction 90min under temperature 50 C, stirring condition, solution ph is 5.0, and solid-liquor separation is obtained neutralizing and sunk
Indium slag and solution B, solution B deliver to zinc-iron separation and recovery system and carry out zinc, iron separation, neutralize the mass percent of indium in heavy indium slag
Content is 0.92%；
（3）By step（2）Gained is neutralized in new acid solution of the low concentration containing indium of heavy indium slag addition；Reality while preneutralization
Leaching of existing acid solution of the low concentration containing indium to the heavy indium slag of neutralization, improves the concentration of indium in acid solution；
（4）Circulate operation step（1）~（3）To step（1）Solution A in indium concentration be 2890mg/L, then carry out step
（2）Obtain neutralizing heavy indium slag and solution B, the mass percent content for neutralizing indium in heavy indium slag is 9.92%, neutralize heavy indium slag and be
Enriched indium slag delivers to indium separation and recovery system recovery indium；
The mass percent content of indium is 9.92% in the present embodiment gained enriched indium slag, and indium concentration is 4.9mg/L in solution B.
Claims (6)
1. it is a kind of from low concentration containing indium acid solution in enriching and reclaiming indium method, it is characterised in that comprise the following steps that：
（1）Preneutralization agent is added in acid solution of the low concentration containing indium, preneutralization is anti-under 50 ~ 90 DEG C of temperature, stirring condition
Should be 1.5 ~ 2.5 to solution ph, preneutralization slag and solution A are obtained after solid-liquor separation, preneutralization slag delivers to zinc hydrometallurgy leaching
System reclaims zinc；
（2）In step（1）Nertralizer is added in resulting solution A, neutralization reaction is to solution under 50 ~ 90 DEG C of temperature, stirring condition
PH value is 4.0 ~ 5.0, and solid-liquor separation obtains neutralizing heavy indium slag and solution B, solution B deliver to zinc-iron separation and recovery system carry out zinc,
Iron is separated；
（3）By step（2）Gained is neutralized in new acid solution of the low concentration containing indium of heavy indium slag addition；
（4）Circulate operation step（1）~（3）To step（2）The heavy indium slag of neutralization in the mass percent content of indium be not less than 1%,
The heavy indium slag of neutralization is enriched indium slag and delivers to indium separation and recovery system recovery indium.
2. the method for enriching and reclaiming indium in the acid solution for containing indium from low concentration according to claim 1, it is characterised in that：Step
Suddenly（1）In acid solution containing low concentration indium containing 20 ~ 60g/L of sulfuric acid, 50 ~ 200mg/L of indium, 80 ~ 120g/L of zinc, iron 5 ~
40g/L。
3. in the acid solution containing indium from low concentration according to claim 1 or claim 2 enriching and reclaiming indium method, its feature exists
In：Step（1）The solid-to-liquid ratio g of acid solution and preneutralization agent of the middle low concentration containing indium:L is 30 ~ 120:1.
4. the method for enriching and reclaiming indium in the acid solution for containing indium from low concentration according to claim 3, it is characterised in that：Step
Suddenly（1）Preneutralization agent is zinc calcine, zinc smoke or Second-rate zinc oxide powder.
5. the method for enriching and reclaiming indium in the acid solution for containing indium from low concentration according to claim 3, it is characterised in that：Step
Suddenly（2）The solid-to-liquid ratio g of middle solution A and nertralizer:L is 10 ~ 50:1.
6. the method for enriching and reclaiming indium in the acid solution for containing indium from low concentration according to claim 5, it is characterised in that：Step
Suddenly（2）Nertralizer is zinc calcine, zinc smoke or Second-rate zinc oxide powder.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108486365A (en) * | 2018-02-01 | 2018-09-04 | 云南云铜锌业股份有限公司 | A method of the Enrichment Indium from the low material of zinc abstraction containing indium |
| CN112746185A (en) * | 2020-12-30 | 2021-05-04 | 广东先导稀材股份有限公司 | Method for recovering indium from indium-containing acidic solution |
| CN113774226A (en) * | 2021-08-21 | 2021-12-10 | 西部矿业股份有限公司 | Roasting smoke dust leaching process for flotation tailings of high-sulfur high-iron hydrometallurgy zinc-sulfur concentrate |
| CN114703368A (en) * | 2022-02-21 | 2022-07-05 | 云锡文山锌铟冶炼有限公司 | Method for treating zinc-indium-containing gypsum slag |
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| CN108486365A (en) * | 2018-02-01 | 2018-09-04 | 云南云铜锌业股份有限公司 | A method of the Enrichment Indium from the low material of zinc abstraction containing indium |
| CN112746185A (en) * | 2020-12-30 | 2021-05-04 | 广东先导稀材股份有限公司 | Method for recovering indium from indium-containing acidic solution |
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| CN113774226A (en) * | 2021-08-21 | 2021-12-10 | 西部矿业股份有限公司 | Roasting smoke dust leaching process for flotation tailings of high-sulfur high-iron hydrometallurgy zinc-sulfur concentrate |
| CN114703368A (en) * | 2022-02-21 | 2022-07-05 | 云锡文山锌铟冶炼有限公司 | Method for treating zinc-indium-containing gypsum slag |
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