CN105755296A - Method for removing calcium from zinc sulfate solution of zinc hydrometallurgy production - Google Patents
Method for removing calcium from zinc sulfate solution of zinc hydrometallurgy production Download PDFInfo
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- CN105755296A CN105755296A CN201610187765.XA CN201610187765A CN105755296A CN 105755296 A CN105755296 A CN 105755296A CN 201610187765 A CN201610187765 A CN 201610187765A CN 105755296 A CN105755296 A CN 105755296A
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- 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
- C22B19/20—Obtaining zinc otherwise than by distilling
- C22B19/26—Refining solutions containing zinc values, e.g. obtained by leaching zinc ores
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- 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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/22—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition
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Abstract
The invention discloses a method for removing calcium from a zinc sulfate solution of zinc hydrometallurgy production.The method for removing calcium from the zinc sulfate solution of zinc hydrometallurgy production includes the following steps that the zinc sulfate solution is cooled; a thickening agent is added into the zinc sulfate solution, and the pH value of the zinc sulfate solution is adjusted to be 4.0-4.5; the zinc sulfate solution is added into a thickener and stays in the thickener for 5-30 h to obtain calcium-containing bottom flow and spillover flow with calcium removed.By using the method for removing calcium from the zinc sulfate solution of zinc hydrometallurgy production, on the premise of not changing an existing technological process, crystallization of calcium salt in the electrolysis process is greatly relieved, power consumption is reduced, labor force for clearing calcium scale is reduced, and production benefits are increased.
Description
Technical field
The present invention relates to field of metallurgy, in particular to the method removing calcium from the solution of zinc sulfate that zinc hydrometallurgy produces.
Background technology
In zinc hydrometallurgical processes, the removal of impurity is required operation, and in usual impurities, calcium sulfate impurity is more special due to it, and the difficulty of removal is bigger.
In existing zinc wet method smelting process, zinc sulfide concentrates obtains zinc calcine through boiling roaster, calcium is present in zinc calcine with oxide, when zinc calcine leaches with the waste electrolyte from Zinc electrolysis, calcium, magnesium are leached in neutral leachate along with zinc calcine, this neutrality leachate is through zinc dust precipitation purification and impurity removal technique, and the solution of zinc sulfate (liquid after i.e. purifying) after being purified, its temperature is generally at 60 DEG C-80 DEG C.The concentration of the calcium in solution of zinc sulfate after purification is 300mg/L-600mg/L.Calcium sulfate enters after zinc hydrometallurgy solution system, increase accordingly the bulk density of liquid after purification, makes the viscosity of solution increase, cause pulp liquid-solid isolation and filtration difficulty, and calcium salt during crystallization, may block filter cloth so that filtration difficulty on filter cloth.
In addition, after purification, liquid is through air cooling compressor forced cooling to 35 DEG C-40 DEG C, along with temperature constantly reduces, calcium, the rapid reduction of magnesium sulfate solubility, calcium, magnesium disordered crystalline, the disordered crystalline in temperature-fall period of sulfuric acid calcium and magnesium, solution channel fouling, it is easily caused heat dissipation equipment shell and conveyance conduit rate of heat transfer slows down, time serious, need stop production to overhaul.
At present, the most common method of deliming is " air cooling compressor cooling deliming method ", and liquid after purification generally with liquid after the purification of 60 DEG C about-85 DEG C for processing object, is reduced to 42 DEG C from 60 DEG C about-85 DEG C or is reduced to about 34 DEG C by about 42 DEG C by this method.Along with the reduction of temperature, calcium sulfate solubility reduces and crystallization, but owing to calcium sulfate crystal of calcium sulfate in temperature-fall period is slow, the actual effect of this process cooling deliming is the most very good.In zinc electrolysis workshop section, calcium ion is with dihydrate gypsum form scale deposition on cell wall, positive plate, even negative electrode, liquid-transport pipe-line.Dihydrate gypsum is non-conductor, and it separates out jointly with manganese dioxide on positive plate, makes the earth of positive pole thicken, and resistance increases, and tank voltage is high, and power consumption increases, and even causes intereelectrode short-circuit, and causing cathode zinc to return molten is also common phenomenon.For avoiding the problems referred to above, it is necessary to often slotting, labour intensity is big.
In order to supplement the effect of cooling deliming, improvement project is proposed, the zinc sulfate that cooled tower solution is cooled to 42 DEG C is pumped in concentrator, after purification, liquid (42 DEG C) stops 3 hours-5 hours at concentrator, it is intended to make calcium sulfate, the crystal of magnesium deposits after growing up, thus separating calcium sulphate, magnesium sulfate further, but calcium sulfate, magnesium sulfate are in the process, solubility is the biggest, and slowly, the content in calcium, magnesium liquid after cleaning is the highest in crystallization.
The patent application of Application No. CN200610031895.0 discloses a kind of method removing calcium ion in zinc sulphate solution.The method imports ultrasonic wave in concentrator, with ultrasonic wave as nucleation machine, promotes that the calcium sulfate in scavenging solution is changed into crystalline state by ionic state, shortens crystallization time.But the calcium content of residual in solution is not improved, simultaneously due also to the increase of equipment causes cost to increase.
The patent application of Application No. CN02806244.2 discloses a kind of method being processed by zinc and removing calcium in sulfate liquor.Under conditions of scavenging solution is in 85 DEG C, adds dead plaster crystal seed, and be slowly stirred, make calcium sulfate with this understanding, with form crystallization, the deposition of dead plaster.Calcium ion, on the premise of adding crystal seed, is converted into the dead plaster that solubility is less, character is more stable by the method, and after deliming, liquid calcium concentration reduces 400mg/L-500mg/L.But calcium concentration is the highest, meanwhile, the solubility of magnesium is added, it is impossible to play the purpose of removing magnesium.
Summary of the invention
The application is to make following facts and the discovery of problem and understanding based on inventor: in order to remove calcium from the solution of zinc sulfate that zinc hydrometallurgy produces, present inventor has carried out research deep, repeatedly and groped.Calcium sulfate has a crystal formation of three kinds of multi-forms: calcium sulphate dihydrate, half-H 2 O calcium sulphate and dead plaster.After solution of zinc sulfate is cooled, the calcium sulfate in solution of zinc sulfate is mainly with the form crystallization of calcium sulphate dihydrate.Wherein, the solubility of the calcium sulfate in solution of zinc sulfate and the rate of settling and solution temperature, time of staying in concentrator, whether add thickener, the pH of solution of zinc sulfate all has important relationship.
It is contemplated that one of technical problem solved the most to a certain extent in correlation technique.To this end, the present invention proposes a kind of method removing calcium from the solution of zinc sulfate that zinc hydrometallurgy produces, the described method removing calcium from the solution of zinc sulfate that zinc hydrometallurgy produces can remove the calcium ion in this solution of zinc sulfate effectively.
The method removing calcium from the solution of zinc sulfate that zinc hydrometallurgy produces according to embodiments of the present invention comprises the following steps: cool down described solution of zinc sulfate；In described solution of zinc sulfate, add thickener, and the pH of described solution of zinc sulfate is regulated to 4.0-4.5；Join in concentrator with by described solution of zinc sulfate, and make described solution of zinc sulfate stop 5 hours-30 hours in described concentrator, in order to obtain the overflow after the underflow of calcic and deliming.
By utilizing the method removing calcium from the solution of zinc sulfate that zinc hydrometallurgy produces according to embodiments of the present invention, can be on the premise of not changing existing technological process, greatly alleviate calcium salt crystallization in electrolysis process, reduce power consumption, decrease cleaning calcium fouling labour, improve productivity effect.
It addition, the method for calcium of removing from the solution of zinc sulfate that zinc hydrometallurgy produces according to the above embodiment of the present invention can also have a following additional technical characteristic:
According to one embodiment of present invention, utilize air cooling compressor that by 60 DEG C-80 DEG C, the temperature of described solution of zinc sulfate is cooled to 35 DEG C-40 DEG C.
According to one embodiment of present invention, the pH of described solution of zinc sulfate is regulated to 4.35.
According to one embodiment of present invention, at least one in organic thickening agent #920, polyaluminium sulfate, aluminium polychloride and organic thickening agent #4125 of described thickener.
According to one embodiment of present invention, the consumption of described thickener is 5ppm-100ppm.
According to one embodiment of present invention, the concentration of the calcium in described solution of zinc sulfate be 400mg/L-800mg/L, zinc concentration be 130g/L-180g/L, the concentration of magnesium be 5g/L-30g/L.
According to one embodiment of present invention, the zinc concentration in described solution of zinc sulfate be 170g/L-180g/L, the concentration of magnesium be 20g/L-30g/L.
According to one embodiment of present invention, in described underflow, the content of the zinc content less than 20wt%, calcium is more than 10wt%.
According to one embodiment of present invention, the concentration of the calcium in described overflow is less than 100mg/L.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the description of described embodiment is intended to for explaining the present invention, and is not considered as limiting the invention.
This application provides a kind of method removing calcium from the solution of zinc sulfate that zinc hydrometallurgy produces.The method removing calcium from the solution of zinc sulfate that zinc hydrometallurgy produces according to embodiments of the present invention comprises the following steps:
Cool down this solution of zinc sulfate；
In this solution of zinc sulfate, add thickener, and the pH of this solution of zinc sulfate is regulated to 4.0-4.5；With
This solution of zinc sulfate is joined in concentrator, and makes this solution of zinc sulfate stop 5 hours-30 hours in this concentrator, in order to obtain the overflow after the underflow of calcic and deliming.
Wherein it is possible to first add this thickener in this solution of zinc sulfate, then the pH of this solution of zinc sulfate is regulated to 4.0-4.5.First the pH of this solution of zinc sulfate can also be regulated to 4.0-4.5, then in this solution of zinc sulfate, add this thickener.If after adding this thickener, cause the pH of this solution of zinc sulfate to change, then the pH of this solution of zinc sulfate is adjusted.
The method of calcium that removes from the solution of zinc sulfate that zinc hydrometallurgy produces according to embodiments of the present invention is by reducing the temperature of this solution of zinc sulfate and extending this solution of zinc sulfate time of staying in this concentrator, thus is conducive to the calcium sulfate in this solution of zinc sulfate with the formation crystallization lentamente of calcium sulphate dihydrate.
What is more important, the method removing calcium from the solution of zinc sulfate that zinc hydrometallurgy produces according to embodiments of the present invention is by regulating the pH of this solution of zinc sulfate to 4.0-4.5, such that it is able to reduce the viscosity of this solution of zinc sulfate, thus it is possible not only to reduce the quantity of slag, and the deposition of beneficially calcium sulphate dihydrate crystal.Additionally, by adding thickener in this solution of zinc sulfate, such that it is able to promote the crystallization of small calcium sulphate dihydrate.
That is, by cooling down this solution of zinc sulfate, extending this solution of zinc sulfate time of staying in this concentrator, add this thickener in this solution of zinc sulfate and regulate the pH of this solution of zinc sulfate, the rate of settling of calcium sulfate can be significantly increased, thus significantly decrease the concentration of the calcium ion in this solution of zinc sulfate.
Therefore, by utilizing the method removing calcium from the solution of zinc sulfate that zinc hydrometallurgy produces according to embodiments of the present invention, can be on the premise of not changing existing technological process, greatly alleviate calcium salt crystallization in electrolysis process, reduce power consumption, decrease cleaning calcium fouling labour, improve productivity effect.
This solution of zinc sulfate can be the solution of zinc sulfate after the purification that zinc dust precipitation purification and impurity removal technique obtains, liquid after i.e. purifying.Wherein, the concentration of the calcium in this solution of zinc sulfate be 400mg/L-800mg/L, zinc concentration be 130g/L-180g/L, the concentration of magnesium be 5g/L-30g/L.
In some examples of the present invention, the zinc concentration in this solution of zinc sulfate is 170g/L-180g/L, the concentration of magnesium is 20g/L-30g/L.
Present inventor has important relationship by the concentration of discovery, the solubility of the calcium sulfate in solution of zinc sulfate and the rate of settling after studying and grope in depth, repeatedly with the sulfuric acid zinc concentration in this solution of zinc sulfate and magnesium sulfate.Specifically, for this solution of zinc sulfate, the concentration of the calcium ion in this solution of zinc sulfate reduces along with the increase of the concentration of the sulfate such as the zinc sulfate in this solution of zinc sulfate, magnesium sulfate.
Therefore, by make the zinc concentration in this solution of zinc sulfate be 170g/L-180g/L, the concentration of magnesium is 20g/L-30g/L, such that it is able to the concentration of the calcium ion significantly decreased in this solution of zinc sulfate.Specifically, this concentrator the concentration of the calcium in the overflow obtained is less than 100mg/L.In other words, after removing calcium, the concentration of the calcium ion in this solution of zinc sulfate is less than 100mg/L.
And, the concentration of the sulfate such as zinc sulfate in this solution of zinc sulfate, magnesium sulfate is the highest, and after removing calcium, the concentration of the calcium ion in this solution of zinc sulfate is the least, i.e. deliming effect is the best.
In some embodiments of the invention, it is possible to use the temperature of this solution of zinc sulfate is cooled to 35 DEG C-40 DEG C by 60 DEG C-80 DEG C by air cooling compressor.Specifically, by the solution of zinc sulfate (60-80 DEG C) containing Ca400-800mg/L, Zn140-180g/L, Mg10-30g/L through transport pump to air cooling compressor, this solution of zinc sulfate in this air cooling compressor forced cooling to 35-40 DEG C.
Regulate the pH of this solution of zinc sulfate after cooling and add thickener.Wherein it is possible to utilize sulfuric acid to regulate the pH of this solution of zinc sulfate.In one embodiment of the invention, the pH of this solution of zinc sulfate is regulated to 4.35.Thus can reduce the viscosity of this solution of zinc sulfate further, thus be possible not only to reduce further the quantity of slag, and advantageously in the deposition of calcium sulphate dihydrate crystal.
In a concrete example of the present invention, at least one in organic thickening agent #920, polyaluminium sulfate, aluminium polychloride and organic thickening agent #4125 of described thickener.In other words, a kind of thickener can be added in this solution of zinc sulfate, it is also possible in this solution of zinc sulfate, add multiple thickener.
Advantageously, the consumption of this thickener is 5ppm-100ppm.It is to say, the concentration of the thickener in this solution of zinc sulfate is 5ppm-100ppm.
Then, utilizing pump to be transported in concentrator by this solution of zinc sulfate, this solution of zinc sulfate stops 10 hours-30 hours in this concentrator.Finally, releasing calcium and magnesium sulfate underflow termly from the bottom of this concentrator, the solution of zinc sulfate gone out from this concentrator overflow enters electrolysis workshop section.
Wherein, release the content of the zinc content less than 20wt%, calcium calcium and magnesium sulfate underflow from the bottom of this concentrator and be more than 10wt%.The concentration of the calcium from the solution of zinc sulfate that this concentrator overflow goes out is less than 200mg/L.Advantageously, the concentration of the calcium from the solution of zinc sulfate that this concentrator overflow goes out is less than 100mg/L.
Embodiment 1
Taking 2L solution of zinc sulfate, the temperature of this solution of zinc sulfate is 75 DEG C, and the concentration of the calcium in this solution of zinc sulfate is 500mg/L, zinc concentration is 170g/L, the concentration of magnesium is 30g/L.Utilize sulfuric acid to regulate the pH of this solution of zinc sulfate to 4.0-4.5, in this solution of zinc sulfate, add the thickener of 20ppm, and be slowly stirred 2 minutes with glass bar.
This solution of zinc sulfate is placed in water-bath, and the temperature of this solution of zinc sulfate is maintained 35 DEG C-40 DEG C.After this solution of zinc sulfate stops about 20 hours in water-bath, overflow send the concentration of the calcium in the solution of zinc sulfate that analysis, overflow go out to be down to 120mg/L.
Embodiment 2
Taking 2L solution of zinc sulfate, the temperature of this solution of zinc sulfate is 75 DEG C, and the concentration of the calcium in this solution of zinc sulfate is 500mg/L, zinc concentration is 160g/L, the concentration of magnesium is 30g/L.Utilize sulfuric acid to regulate the pH of this solution of zinc sulfate to 4.0-4.5, in this solution of zinc sulfate, add the thickener of 20ppm, and be slowly stirred 2 minutes with glass bar.
This solution of zinc sulfate is placed in water-bath, and the temperature of this solution of zinc sulfate is maintained 35 DEG C-40 DEG C.After this solution of zinc sulfate stops about 20 hours in water-bath, overflow send the concentration of the calcium in the solution of zinc sulfate that analysis, overflow go out to be down to 180mg/L.
Embodiment 3
Taking 2L solution of zinc sulfate, the temperature of this solution of zinc sulfate is 75 DEG C, and the concentration of the calcium in this solution of zinc sulfate is 500mg/L, zinc concentration is 160g/L, the concentration of magnesium is 10g/L.Utilize sulfuric acid to regulate the pH of this solution of zinc sulfate to 4.0-4.5, in this solution of zinc sulfate, add the thickener of 20ppm, and be slowly stirred 2 minutes with glass bar.
This solution of zinc sulfate is placed in water-bath, and the temperature of this solution of zinc sulfate is maintained 35 DEG C-40 DEG C.After this solution of zinc sulfate stops about 20 hours in water-bath, overflow send the concentration of the calcium in the solution of zinc sulfate that analysis, overflow go out to be down to 200mg/L.
Embodiment 4
Taking 2L solution of zinc sulfate, the temperature of this solution of zinc sulfate is 75 DEG C, and the concentration of the calcium in this solution of zinc sulfate is 500mg/L, zinc concentration is 150g/L, the concentration of magnesium is 10g/L.Utilize sulfuric acid to regulate the pH of this solution of zinc sulfate to 4.0-4.5, in this solution of zinc sulfate, add the thickener of 20ppm, and be slowly stirred 2 minutes with glass bar.
This solution of zinc sulfate is placed in water-bath, and the temperature of this solution of zinc sulfate is maintained 35 DEG C-40 DEG C.After this solution of zinc sulfate stops about 30 hours in water-bath, overflow send the concentration of the calcium in the solution of zinc sulfate that analysis, overflow go out to be down to 200mg/L.
Embodiment 5
Taking 2L solution of zinc sulfate, the temperature of this solution of zinc sulfate is 65 DEG C, and the concentration of the calcium in this solution of zinc sulfate is 500mg/L, zinc concentration is 150g/L, the concentration of magnesium is 10g/L.Sulfuric acid is utilized to regulate the pH of this solution of zinc sulfate to 4.0-4.5.Utilize pump to be delivered in the concentrator of 180L by this solution of zinc sulfate, use three-way pipe to be passed through thickener 30ppm in course of conveying, by flow velocity, the temperature of this solution of zinc sulfate in this concentrator is maintained 35 DEG C-40 DEG C.
This solution of zinc sulfate is in this concentrator after middle stop about 10 hours, and overflow send the concentration of the calcium in the solution of zinc sulfate that analysis, overflow go out to be down to 220mg/L.
In describing the invention, it is to be understood that term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " is installed ", " being connected ", " connection ", the term such as " fixing " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be mechanically connected, it is also possible to be electrical connection or each other can communication；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be connection or the interaction relationship of two elements of two element internals, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means that the specific features, structure, material or the feature that combine this embodiment or example description are contained at least one embodiment or the example of the present invention.In this manual, the schematic representation of above-mentioned term is necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be to combine in one or more embodiments in office or example in an appropriate manner.Additionally, in the case of the most conflicting, the feature of the different embodiments described in this specification or example and different embodiment or example can be combined and combine by those skilled in the art.
Although above it has been shown and described that embodiments of the invention, it is understandable that, above-described embodiment is exemplary, it is impossible to be interpreted as limitation of the present invention, and above-described embodiment can be changed, revises, replace and modification by those of ordinary skill in the art within the scope of the invention.
Claims (9)
1. the method removing calcium from the solution of zinc sulfate that zinc hydrometallurgy produces, it is characterised in that comprise the following steps:
Cool down described solution of zinc sulfate；
In described solution of zinc sulfate, add thickener, and the pH of described solution of zinc sulfate is regulated to 4.0-4.5；With
Described solution of zinc sulfate is joined in concentrator, and makes described solution of zinc sulfate stop 5 hours in described concentrator
-30 hours, in order to obtain the overflow after the underflow of calcic and deliming.
The method removing calcium from the solution of zinc sulfate that zinc hydrometallurgy produces the most according to claim 1, its feature exists
In, utilize air cooling compressor that by 60 DEG C-80 DEG C, the temperature of described solution of zinc sulfate is cooled to 35 DEG C-40 DEG C.
The method removing calcium from the solution of zinc sulfate that zinc hydrometallurgy produces the most according to claim 1, its feature exists
In, the pH of described solution of zinc sulfate is regulated to 4.35.
The method removing calcium from the solution of zinc sulfate that zinc hydrometallurgy produces the most according to claim 1, its feature exists
In, described thickener is in organic thickening agent #920, polyaluminium sulfate, aluminium polychloride and organic thickening agent #4125
At least one.
The method removing calcium from the solution of zinc sulfate that zinc hydrometallurgy produces the most according to claim 1, its feature exists
In, the consumption of described thickener is 5ppm-100ppm.
The method removing calcium from the solution of zinc sulfate that zinc hydrometallurgy produces the most according to claim 1, its feature exists
In, the concentration of the calcium in described solution of zinc sulfate is 400mg/L-800mg/L, zinc concentration is 130g/L-180g/L, magnesium
Concentration is 5g/L-30g/L.
The method removing calcium from the solution of zinc sulfate that zinc hydrometallurgy produces the most according to claim 6, its feature exists
In, the zinc concentration in described solution of zinc sulfate is 170g/L-180g/L, the concentration of magnesium is 20g/L-30g/L.
The method removing calcium from the solution of zinc sulfate that zinc hydrometallurgy produces the most according to claim 1, its feature exists
In, in described underflow, the content of the zinc content less than 20wt%, calcium is more than 10wt%.
The method removing calcium from the solution of zinc sulfate that zinc hydrometallurgy produces the most according to claim 1, its feature exists
In, the concentration of the calcium in described overflow is less than 100mg/L.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108821496A (en) * | 2018-08-31 | 2018-11-16 | 云南驰宏锌锗股份有限公司 | A kind of new process improving electrolysis solution of zinc sulfate transparency |
| CN110964914A (en) * | 2019-12-30 | 2020-04-07 | 南丹县南方有色金属有限责任公司 | Method for removing calcium and magnesium in zinc hydrometallurgy process |
| CN114438319A (en) * | 2021-12-30 | 2022-05-06 | 云锡文山锌铟冶炼有限公司 | Method for treating calcium and magnesium in zinc hydrometallurgy process |
| CN114836624A (en) * | 2022-04-20 | 2022-08-02 | 荆门市格林美新材料有限公司 | Calcium removal method for chloride or sulfate solution |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1496414A (en) * | 2001-03-09 | 2004-05-12 | ���п�ķ�����Ϲɷݹ�˾ | A method for removal of calcium from zinc frocess sulfate solution |
| CN1884092A (en) * | 2006-06-29 | 2006-12-27 | 株洲市兴民科技有限公司 | Method for removing calcium ion in zinc sulphate solution |
| CN102330152A (en) * | 2011-08-15 | 2012-01-25 | 武善东 | Continuous technological process for producing calcium sulfate whiskers on a large scale |
| CN105039694A (en) * | 2015-06-24 | 2015-11-11 | 山东国大黄金股份有限公司 | Method for reducing zinc powder replacement crystal substance and improving pregnant solution processing amount |
-
2016
- 2016-03-29 CN CN201610187765.XA patent/CN105755296B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1496414A (en) * | 2001-03-09 | 2004-05-12 | ���п�ķ�����Ϲɷݹ�˾ | A method for removal of calcium from zinc frocess sulfate solution |
| US20040089103A1 (en) * | 2001-03-09 | 2004-05-13 | Panu Talonen | Method for the removal of calcium from a zinc process sulfate solution |
| CN1884092A (en) * | 2006-06-29 | 2006-12-27 | 株洲市兴民科技有限公司 | Method for removing calcium ion in zinc sulphate solution |
| CN102330152A (en) * | 2011-08-15 | 2012-01-25 | 武善东 | Continuous technological process for producing calcium sulfate whiskers on a large scale |
| CN105039694A (en) * | 2015-06-24 | 2015-11-11 | 山东国大黄金股份有限公司 | Method for reducing zinc powder replacement crystal substance and improving pregnant solution processing amount |
Non-Patent Citations (3)
| Title |
|---|
| 孙明生: "硫酸锌溶液冷却结晶除钙镁生产实践", 《中国有色冶金》 * |
| 胡岳华: "《矿物浮选》", 31 March 2014 * |
| 雷霆: "《锌冶金》", 31 January 2013 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108821496A (en) * | 2018-08-31 | 2018-11-16 | 云南驰宏锌锗股份有限公司 | A kind of new process improving electrolysis solution of zinc sulfate transparency |
| CN110964914A (en) * | 2019-12-30 | 2020-04-07 | 南丹县南方有色金属有限责任公司 | Method for removing calcium and magnesium in zinc hydrometallurgy process |
| CN114438319A (en) * | 2021-12-30 | 2022-05-06 | 云锡文山锌铟冶炼有限公司 | Method for treating calcium and magnesium in zinc hydrometallurgy process |
| CN114438319B (en) * | 2021-12-30 | 2023-12-08 | 云锡文山锌铟冶炼有限公司 | Method for treating calcium and magnesium in zinc hydrometallurgy process |
| CN114836624A (en) * | 2022-04-20 | 2022-08-02 | 荆门市格林美新材料有限公司 | Calcium removal method for chloride or sulfate solution |
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