CN108017085A - Method for preparing zinc carbonate by using zinc leaching residues - Google Patents
Method for preparing zinc carbonate by using zinc leaching residues Download PDFInfo
- Publication number
- CN108017085A CN108017085A CN201711208334.8A CN201711208334A CN108017085A CN 108017085 A CN108017085 A CN 108017085A CN 201711208334 A CN201711208334 A CN 201711208334A CN 108017085 A CN108017085 A CN 108017085A
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- Prior art keywords
- zinc
- filtrate
- carbonate
- zinc leaching
- filter residue
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G9/00—Compounds of zinc
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/80—Destroying solid waste or transforming solid waste into something useful or harmless involving an extraction step
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Abstract
The invention discloses a method for preparing zinc carbonate by using zinc leaching residues, which comprises the steps of firstly slurrying the zinc leaching residues with water, wherein the mass liquid-solid ratio is 3-4:1 during slurrying, then adding hydrogen peroxide with the mass of 1-10% of the zinc leaching residues, stirring for 2 hours, and filtering to obtain filtrate A and filter residues B; pulping and washing the filter residue B with water, wherein the mass liquid-solid ratio is 3-4:1 during pulping, washing for 0.5h, and filtering to obtain a filtrate C and a filter residue D; adjusting the pH value of the filtrate A to 3-4 by using sodium hydroxide, stirring for 0.5-1h, and filtering to obtain filtrate E and filter residue F; and continuously adding ammonium bicarbonate into the filtrate E to stabilize the pH value to 8-9, continuously stirring to perform precipitation reaction for 1H, and filtering to obtain filtrate G and a product H, wherein the product H is zinc carbonate. The method effectively extracts valuable metal zinc in the zinc hydrometallurgy leaching residues, prepares an industrial zinc carbonate product, achieves the aim of comprehensively recycling the zinc leaching residues, has simple process and easy control of the flow, does not produce other by-products, is beneficial to environmental protection, and has high valuable metal recovery rate.
Description
Technical field
The invention belongs to non-ferrous metal metallurgy resource comprehensive utilization to utilize technical field, and in particular to one kind is leached using zinc
The method that slag produces zinc carbonate.
Background technology
Zinc Hydrometallurgy Process produces substantial amounts of leached mud solid slag, its component is complex, contains the valuable gold such as lead zinc
Belong to, containing zinc 4~9%.Being limited by economic technology, leached mud solid slag is difficult processing, each enterprise's generally use stockyard processing,
Cause the huge waste of serious environmental pollution and metals resources.With domestic and international lead and zinc mineral resources supply it is increasingly tight
, future comprehensive utilization low-grade complex raw material is one of trend of non-ferrous metallurgy Business survival.
At present, mainly have to the comprehensive reutilization method of zinc leaching residue both at home and abroad：Pyrogenic process recycling, hydrometallurgic recovery etc..Fire
Method recovery technology is by carrying out reduction volatilization, supplying pyrometallurgical smelting stove, sulfating roasting, electrothermic retorting etc. to zinc leaching residue slag
Measure, reaches the dilution of slag, accelerates the purpose of the valuable metal such as valuable metal separation, recycling lead, zinc.Wet-treating recycling lead silver
Slag, generally according to the slag type feature of lead smelting gas, the process such as washes it, is roasted, being leached, reaching recycling valuable metal
Purpose, lead fume dirt and the volatile matter effusion of wet-treating are few, do not produce other byproducts, are good for the environment, valuable gold
It is high to belong to the rate of recovery.Pyrogenic attack needs to consume the substantial amounts of energy, such as coal, coke, and can produce and largely contain sulfur dioxide
And the flue gas of other harmful components such as dust, high energy consumption, causes serious pollution to the environment.
The content of the invention
The purpose of the present invention is to solve technical problem existing in the prior art, there is provided a kind of technique is simple, flow
It is easy to control and the high method that zinc carbonate is produced using zinc leaching residue of valuable metal zinc recovery in zinc hydrometallurgy leached mud.
In order to achieve the above object, the present invention uses following technical scheme：It is a kind of to produce zinc carbonate using zinc leaching residue
Method, this method comprise the following steps：
Step 1：By zinc leaching residue water slurry, quality liquid-solid ratio is 3-4 during pulp:1, then add zinc leaching residue quality 1-
Filtered after 10% hydrogen peroxide stirring 2h, obtain filtrate A and filter residue B；
Step 2：By filter residue B water pulping and washings, quality liquid-solid ratio is 3-4 during pulp:1, filter, filtered after washing 0.5h
Liquid C and filter residue D, pulp water of the liquor C return to step one as zinc leaching residue；
Step 3：Filtrate A adjusts pH value to 3-4 with sodium hydroxide, is filtered after stirring 0.5-1h, obtains filtrate E and filter residue F；
Step 4：Ammonium hydrogen carbonate is continuously added into filtrate E makes pH stable to 8-9, and is stirred continuously and carries out precipitation reaction 1h
After filter, obtain filtrate G and product H, product H is zinc carbonate.
Further, the temperature of hydrogen peroxide is 20-60 DEG C in the step 1.
Further, wash temperature is 40-80 DEG C in the step 2.
Further, reaction temperature is 60-90 DEG C when adjusting pH value with sodium hydroxide in the step 3.
The present invention has the advantages that compared with the prior art：The present invention will add hydrogen peroxide and stir after zinc leaching residue pulp
Mix, filtrate is obtained by filtration after stirring, filtered after then adjusting pH value to filtrate, then add ammonium hydrogen carbonate in the filtrate and sunk
Form sediment and react, zinc carbonate is obtained by filtration after reaction, the valuable metal zinc being effectively extracted in zinc hydrometallurgy leached mud, and be made
Industrial carbonic acid zinc product, has achieveed the purpose that zinc leaching residue comprehensive reutilization, overall process technique is simple, flow is easily controlled
System, will not produce other byproducts, be good for the environment, and recovery rate of valuable metals is high.
Brief description of the drawings
Fig. 1 is the process flow chart of the present invention.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of method that zinc carbonate is produced using zinc leaching residue, this method are comprised the following steps：
Step 1：By zinc leaching residue water slurry, quality liquid-solid ratio is 3 during pulp:1, then add zinc leaching residue quality 1%, temperature
The hydrogen peroxide spent for 20 DEG C filters after stirring 2h, obtains filtrate A and filter residue B.
Step 2：By filter residue B water pulping and washings, quality liquid-solid ratio is 3 during pulp:1, under conditions of temperature is 40 DEG C
Filtered after washing 0.5h, obtain liquor C and filter residue D, pulp water of the liquor C return to step one as zinc leaching residue.
Step 3：Filtrate A sodium hydroxide adjusting pH value to 3, is filtered after stirring 0.5h under conditions of being 60 DEG C in temperature,
Obtain filtrate E and filter residue F.
Step 4：Ammonium hydrogen carbonate is continuously added into filtrate E makes pH stable to 8, and is stirred continuously carry out precipitation reaction
Filtered after 1h, obtain filtrate G and product H, product H is zinc carbonate.
Embodiment 2
A kind of method that zinc carbonate is produced using zinc leaching residue, this method are comprised the following steps：
Step 1：By zinc leaching residue water slurry, quality liquid-solid ratio is 4 during pulp:1, then add zinc leaching residue quality 10%,
The hydrogen peroxide that temperature is 60 DEG C filters after stirring 2h, obtains filtrate A and filter residue B.
Step 2：By filter residue B water pulping and washings, quality liquid-solid ratio is 4 during pulp:1, under conditions of temperature is 80 DEG C
Filtered after washing 0.5h, obtain liquor C and filter residue D, pulp water of the liquor C return to step one as zinc leaching residue.
Step 3：Filtrate A adjusts pH value to 4 with sodium hydroxide, filters, obtains after stirring 1h under the conditions of at a temperature of 90 °C
To filtrate E and filter residue F.
Step 4：Ammonium hydrogen carbonate is continuously added into filtrate E makes pH stable to 9, and is stirred continuously carry out precipitation reaction
Filtered after 1h, obtain filtrate G and product H, product H is zinc carbonate.
Embodiment 3
A kind of method that zinc carbonate is produced using zinc leaching residue, this method are comprised the following steps：
Step 1：By zinc leaching residue water slurry, quality liquid-solid ratio is 3 during pulp:1, then add zinc leaching residue quality 5%, temperature
The hydrogen peroxide spent for 40 DEG C filters after stirring 2h, obtains filtrate A and filter residue B.
Step 2：By filter residue B water pulping and washings, quality liquid-solid ratio is 4 during pulp:1, under conditions of temperature is 60 DEG C
Filtered after washing 0.5h, obtain liquor C and filter residue D, pulp water of the liquor C return to step one as zinc leaching residue.
Step 3：Filtrate A adjusts pH value to 3 with sodium hydroxide, filters, obtains after stirring 1h under conditions of being 75 DEG C in temperature
To filtrate E and filter residue F.
Step 4：Ammonium hydrogen carbonate is continuously added into filtrate E makes pH stable to 8, and is stirred continuously carry out precipitation reaction
Filtered after 1h, obtain filtrate G and product H, product H is zinc carbonate.
Claims (4)
- A kind of 1. method that zinc carbonate is produced using zinc leaching residue, it is characterised in that this method comprises the following steps：Step 1：By zinc leaching residue water slurry, quality liquid-solid ratio is 3-4 during pulp:1, then add zinc leaching residue quality 1- Filtered after 10% hydrogen peroxide stirring 2h, obtain filtrate A and filter residue B；Step 2：By filter residue B water pulping and washings, quality liquid-solid ratio is 3-4 during pulp:1, filter, filtered after washing 0.5h Liquid C and filter residue D, pulp water of the liquor C return to step one as zinc leaching residue；Step 3：Filtrate A adjusts pH value to 3-4 with sodium hydroxide, is filtered after stirring 0.5-1h, obtains filtrate E and filter residue F；Step 4：Ammonium hydrogen carbonate is continuously added into filtrate E makes pH stable to 8-9, and is stirred continuously and carries out precipitation reaction 1h After filter, obtain filtrate G and product H, product H is zinc carbonate.
- A kind of 2. method that zinc carbonate is produced using zinc leaching residue according to claim 1, it is characterised in that：The step The temperature of hydrogen peroxide is 20-60 DEG C in one.
- A kind of 3. method that zinc carbonate is produced using zinc leaching residue according to claim 1, it is characterised in that：The step Wash temperature is 40-80 DEG C in two.
- A kind of 4. method that zinc carbonate is produced using zinc leaching residue according to claim 1, it is characterised in that：The step Reaction temperature is 60-90 DEG C when adjusting pH value with sodium hydroxide in three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711208334.8A CN108017085A (en) | 2017-11-27 | 2017-11-27 | Method for preparing zinc carbonate by using zinc leaching residues |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711208334.8A CN108017085A (en) | 2017-11-27 | 2017-11-27 | Method for preparing zinc carbonate by using zinc leaching residues |
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| CN108017085A true CN108017085A (en) | 2018-05-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110627106A (en) * | 2019-08-22 | 2019-12-31 | 日照昆欧环保科技有限公司 | Method for producing zinc carbonate by using blast furnace cloth bag ash dechlorination wastewater |
| CN113511669A (en) * | 2021-07-13 | 2021-10-19 | 常州市武进康佳化工有限公司 | Recovery and purification process of blast furnace zinc ash for preparing zinc carbonate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092771A (en) * | 2010-09-06 | 2011-06-15 | 汪晋强 | Method for producing ordinary zinc carbonate and caustic soda by using sodium hydrosulfite filtration residues |
| CN102965499A (en) * | 2012-11-01 | 2013-03-13 | 湖南有色金属研究院 | Method for extracting valuable element in arsenic salt purification slag from zinc hydrometallurgy |
-
2017
- 2017-11-27 CN CN201711208334.8A patent/CN108017085A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092771A (en) * | 2010-09-06 | 2011-06-15 | 汪晋强 | Method for producing ordinary zinc carbonate and caustic soda by using sodium hydrosulfite filtration residues |
| CN102965499A (en) * | 2012-11-01 | 2013-03-13 | 湖南有色金属研究院 | Method for extracting valuable element in arsenic salt purification slag from zinc hydrometallurgy |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110627106A (en) * | 2019-08-22 | 2019-12-31 | 日照昆欧环保科技有限公司 | Method for producing zinc carbonate by using blast furnace cloth bag ash dechlorination wastewater |
| CN113511669A (en) * | 2021-07-13 | 2021-10-19 | 常州市武进康佳化工有限公司 | Recovery and purification process of blast furnace zinc ash for preparing zinc carbonate |
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Application publication date: 20180511 |