CN101270416A - Zincium bayer process for processing zinc oxide material - Google Patents
Zincium bayer process for processing zinc oxide material Download PDFInfo
- Publication number
- CN101270416A CN101270416A CNA2008100312012A CN200810031201A CN101270416A CN 101270416 A CN101270416 A CN 101270416A CN A2008100312012 A CNA2008100312012 A CN A2008100312012A CN 200810031201 A CN200810031201 A CN 200810031201A CN 101270416 A CN101270416 A CN 101270416A
- Authority
- CN
- China
- Prior art keywords
- zinc oxide
- zinc
- oxide material
- zincium
- solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses a zinc Bayer process of processing zinc oxide material, which is characterized by comprising the following procedures: A. zinc oxide is added into sodium zincate solution and the solution is heated up to 60 to 160 DEG C, the molar ratio of Na2O to ZnO in the obtained solution is 1 to 3; B. the sodium zincate solution of the molar ratio of Na2O to ZnO at 1 to 3, which is obtained from Step A, is cooled and mixed for precipitating zinc hydroxide, till the molar ratio of Na2O to ZnO in the solution is increased to 3 to 7; The Step A and the Step B are repeated, the zinc hydroxide obtained can be roasted to obtain zinc oxide. The method can effectively enrich and separate zinc oxide from the zinc oxide material and is beneficial to further refine the zinc.
Description
Technical field
The present invention relates to a kind of method from zinc oxide material extraction zinc, particularly a kind of alkaline process is handled the method that zinc oxide material extracts zinc.
Background technology
Relatively low, the complicated component of zinc oxide ore ore grade, and contain a large amount of basic gangues, when directly ore being entered the smelting program, the difficulty of recycling is very big, and production cost is higher relatively.Just present, the zinc oxide material processing mode has two classes: the one, and zinc oxide material enters the smelting program and gets metallic zinc behind beneficiation enrichment; The 2nd, zinc oxide material is directly entered the smelting routine processes, directly the method for smelting zinc can be divided into pyrogenic process and wet method two classes again.
Up to now, to zinc oxide ore, mineral processing index is all not so good, and the rate of recovery only is 60%～70%.Pyrogenic attack is generally directly volatilized by equipment such as rotary kilns, though can obtain to contain the zinc oxide of zinc 50%～60%, the thermal process link is many, long flow path, pyrogenic process equipment is huge, and power consumption is high, 1t zinc consumption coal 10～15t, the rate of recovery only is 50%～60%, and envrionment conditions is bad.
Wet method leaches generally that acidleach goes out, alkali leaches.
The shortcoming that acidleach goes out zinc oxide technology is that technology condition control is strict, technical difficulty is big, in addition, economic benefit is restricted by ore zinc grade, according to present state of the art, the external processing contains Zn about 25%, and domestic processing contains Zn＞30% zinc oxide ore, and better economic results is just arranged.But also exist such as a large amount of acid of consumption such as basic gangue calcium, magnesium, leach liquor contain that zinc is low, in the leaching and problem such as the quantity of slag is big, solution equilibria is wayward:
Basic gangue did not react when alkaline process leached, and selectivity is good, did not have good method but how to reclaim zinc from alkaline leach liquor.
Therefore the smelting of zinc oxide ore need be explored new processing method.
Summary of the invention
Technical problem to be solved by this invention is, a kind of Zincium bayer process of handling zinc oxide material is provided, thus obtain enrichment zinc oxide product, be beneficial to the further refinement of zinc.
The present invention solves the problems of the technologies described above the technical scheme that is adopted to be:
A kind of Zincium bayer process of handling zinc oxide material is characterized in that, may further comprise the steps:
A: zinc oxide material is joined in the sodium zincate solution and this solution is heated to 60～160 ℃, the Na of gained solution
2O and ZnO mol ratio are 1～3;
B: will be through the Na of steps A gained
2O and ZnO mol ratio are that 1～3 sodium zincate solution is cooled to 10～60 ℃, stir, and zinc hydroxide is separated out, up to Na wherein
2The mol ratio of O and ZnO is brought up to till 3～7;
Repeating step A and step B, and the zinc hydroxide roasting that obtains obtained zinc oxide.
Described zinc oxide material is zinc oxide ore or zinc oxide fumes (mixture that promptly contains zinc oxide and impurity).In the described steps A, dissolution time is 0.1～5 hour.In the steps A, the liquid-solid ratio of stripping 0.6: 1～10: 1.
As improvement, when separating out zinc hydroxide, add the zinc hydroxide crystal seed.The add-on of described zinc hydroxide crystal seed is 0.8～8kg/m
3
Principle of the present invention is:
Key of the present invention is to utilize the special chemical property of zinc oxide: zinc oxide solubility height under the high temperature in the sodium hydroxide solution of higher concentration, zinc oxide solubility is low under the low temperature.Make the zinc oxide stripping in the ore deposit and separate by the control comparatively high temps, purer zinc oxide supersaturation is separated out, thereby reach the purpose of concentration and separation with gangue.
Because zinc oxide and aluminum oxide character are similar, all belong to intermediate oxide.Be extensive use of Bayer process in the extraction metallurgy of aluminum current and handled bauxite (oxidized ore of aluminium), widespread use at home and abroad, zinc oxide is the same with aluminum oxide, presents acidity in the sodium hydroxide solution of comparatively high temps and concentration, is converted into acid ion and dissolves; And under lower temperature and concentration, solution can become again supersaturation and the oxyhydroxide of precipitating metal.In the metallurgy of aluminium, these two processes are moved in circles has just constituted the Bayer process circulation.So, the metallurgy of zinc also can form the circulation of similar Bayer process, is called " Zincium bayer process ", and this working cycle is called " circulation of zinc Bayer ".This zinc Bayer circulation comprises following 2 steps:
The A kind is divided process: Na
2O and ZnO mol ratio be 1～3 sodium zincate solution at normal temperatures, as long as constantly stir, the ZnO in the solution just can be zinc hydroxide and slowly separate out, up to Na wherein
2The mol ratio of O: ZnO is brought up to till 3～6.
The B process in leaching: separated out the solution of most of zinc hydroxide, after the heating, the zinc oxide in again can the stripping zinc oxide material, this just utilizes the process of seed precipitation solution stripping zinc oxide material.
Beneficial effect of the present invention has:
Zincium bayer process involved in the present invention has advantages such as the selectivity of leaching is good, production cost is low, technology is simple, can effectively handle zinc oxide material, significantly with the zinc oxide enrichment in the zinc oxide material, original zinc oxide ore that contains zinc oxide about 10% can obtain containing the zinc oxide product of zinc more than 90% after this method is handled.
Embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1
Zinc oxide ore contains Zn 26.2% (amount to and contain zinc oxide 32.6%), is used for the solution of stripping to contain ZnO5.2%, contain Na
2O 21.7%, (its Na
2O and ZnO mol ratio are 5.5), the liquid-solid ratio of stripping is 2: 1 (liquid-solid ratioes: the volume m of one ton of used infusion solution of dried mineral
3/ t), temperature is 95 ℃, stripping 1.5 hours, and the solubility rate of zinc is 87.9%; Behind the filtering separation stripping slag, cool to 25 ℃, press 5kg/m
3Amount add Zn (OH)
2Crystal seed constantly stirs, wherein m
3Be liquor capacity, the zinc in the solution just can be zinc hydroxide slowly separates out, and obtains containing ZnO 5.4%, Na
2The decomposition nut liquid of O 21.03% (its Na
2O and ZnO mol ratio are 5.1), return stripping next batch zinc oxide ore.The zinc hydroxide of separating out obtains zinc oxide through roasting, contains Zn 75.86%, amounts to contain ZnO 94.53%, can incorporate the neutral leaching process of conventional wet zinc metallurgy into.
Embodiment 2
Zinc oxide fumes contains Zn 42.6%, is used for the solution of stripping to contain ZnO 6.8%, contain Na
2O 22.1%, (its Na
2O and ZnO mol ratio are 4.2), the liquid-solid ratio of stripping is 3: 1, temperature is 145 ℃, stripping 2.5 hours, the solubility rate of zinc is 79.6%; Behind the filtering separation stripping slag, cool to 25 ℃, press 4.75kg/m
3Amount add Zn (OH)
2Crystal seed constantly stirs, and the zinc in the solution just can be zinc hydroxide slowly separates out, and obtains containing ZnO 4.38%, Na
2The decomposition nut liquid of O 21.47%, (its Na
2O and ZnO mol ratio are 6.4), return and handle the next batch zinc oxide fumes.The zinc hydroxide of separating out obtains zinc oxide through roasting, contains Zn 76.35%, amounts to contain ZnO 95.14%, can incorporate the neutral leaching process of conventional wet zinc metallurgy into.
Claims (6)
1, a kind of Zincium bayer process of handling zinc oxide material is characterized in that, may further comprise the steps:
A: zinc oxide material is joined in the sodium zincate solution and this solution is heated to 60～160 ℃, the Na of gained solution
2O and ZnO mol ratio are 1～3;
B: will be through the Na of steps A gained
2O and ZnO mol ratio are that 1～3 sodium zincate solution is cooled to 10～60 ℃, stir, and zinc hydroxide is separated out, up to Na wherein
2The mol ratio of O and ZnO is brought up to till 3～7;
Repeating step A and step B, and the zinc hydroxide roasting that obtains obtained zinc oxide.
2, a kind of Zincium bayer process of handling zinc oxide material as claimed in claim 1, described zinc oxide material is zinc oxide ore or zinc oxide fumes.
3, a kind of Zincium bayer process of handling zinc oxide material as claimed in claim 1, in the described steps A, dissolution time is 0.1～5 hour.
4, as the described a kind of Zincium bayer process of handling zinc oxide material of one of claim 1 to 3, in the steps A, the liquid-solid ratio of stripping 0.6: 1～10: 1.
5, as claim 1 or 4 described a kind of Zincium bayer process of handling zinc oxide material, it is characterized in that, when separating out zinc hydroxide, add the zinc hydroxide crystal seed.
6, a kind of Zincium bayer process of handling zinc oxide material as claimed in claim 5 is characterized in that, the add-on of described zinc hydroxide crystal seed is 0.8～8kg/m
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810031201A CN100588726C (en) | 2008-05-05 | 2008-05-05 | Zincium bayer process for processing zinc oxide material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810031201A CN100588726C (en) | 2008-05-05 | 2008-05-05 | Zincium bayer process for processing zinc oxide material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101270416A true CN101270416A (en) | 2008-09-24 |
| CN100588726C CN100588726C (en) | 2010-02-10 |
Family
ID=40004640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810031201A Expired - Fee Related CN100588726C (en) | 2008-05-05 | 2008-05-05 | Zincium bayer process for processing zinc oxide material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100588726C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103320608A (en) * | 2012-03-19 | 2013-09-25 | 株式会社日立制作所 | Separation and recovery method of rare earth and apparatus employing the method |
| CN112158876A (en) * | 2020-10-16 | 2021-01-01 | 烟台中科恩吉科创新产业园管理有限公司 | Method for preparing one-dimensional nano zinc hydroxide rod |
| CN115161492A (en) * | 2022-07-07 | 2022-10-11 | 桂林理工大学 | Method for preparing high-grade zinc oxide by treating secondary zinc oxide in rotary kiln |
-
2008
- 2008-05-05 CN CN200810031201A patent/CN100588726C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103320608A (en) * | 2012-03-19 | 2013-09-25 | 株式会社日立制作所 | Separation and recovery method of rare earth and apparatus employing the method |
| CN112158876A (en) * | 2020-10-16 | 2021-01-01 | 烟台中科恩吉科创新产业园管理有限公司 | Method for preparing one-dimensional nano zinc hydroxide rod |
| CN115161492A (en) * | 2022-07-07 | 2022-10-11 | 桂林理工大学 | Method for preparing high-grade zinc oxide by treating secondary zinc oxide in rotary kiln |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100588726C (en) | 2010-02-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106745097B (en) | A kind of method from lepidolite concentrate extraction lithium | |
| CN100374593C (en) | Tech. of extracting metallic cobait from magnetic-iron ore tailing slag | |
| CN108165751B (en) | The method and system of recycling valuable metal are smelted in a kind of collaboration from waste printed circuit board, copper scap and copper-containing residue | |
| CN102168184B (en) | Method for extracting beryllium oxide from low-grade beryllium ore | |
| CN105293564A (en) | Method for recycling zinc-containing dust ash in steel plant | |
| CN104263955B (en) | Recovering method for molybdenum and copper in tungsten smelting molybdenum removing slag | |
| CN101597692B (en) | Technological method for extracting indium from zinc oxide generated from waste residue from zinc by hydro-smelting | |
| CN102443701A (en) | Clean metallurgic comprehensive utilization method of iron vitriol slags | |
| CN103773967B (en) | The method of recover silver, copper and zinc from steel works sintering dust | |
| CN106755967A (en) | A kind of sulfuric acid calcination processing lepidolite and the method for producing lithium carbonate | |
| CN109437255A (en) | A method of extracting lithium salts from lithium ore | |
| CN104404243B (en) | A kind of method of soda acid associating low-temperature decomposition low-grade Weishan rare earth ore concentrate | |
| CN102586608B (en) | Method for preparing sponge indium with indium-rich slag produced in lead-zinc smelting process | |
| CN104946896A (en) | Method for extracting rare earth from waste rare earth phosphors | |
| CN109593974A (en) | A method of extracting lithium from lithium mine | |
| CN101525696B (en) | Method for leaching indium from leaching residue containing indium | |
| CN100588726C (en) | Zincium bayer process for processing zinc oxide material | |
| CN106756060B (en) | A kind of recovery method of indium metal | |
| CN110295285A (en) | A method of zinc is recycled from oxygen-enriched solid sulphur reduction melting clinker | |
| CN103757424B (en) | A kind of comprehensive recovering process of high-arsenic antimony oxygen flue dust | |
| CN105399132B (en) | A kind of technique for preparing basic copper chloride and basic zinc chloride with brass clinker and flue dust containing zinc | |
| CN105907943B (en) | Lithium ore chlorinating agent inorganic base roasts organic solvent leaching and extracts lithium technique | |
| CN102417980A (en) | Method for producing nickel sulfate by leaching Lateritic nickle ores with both sulfuric acid and ammonia | |
| CN104451169B (en) | The extraction process of agglomeration for iron mine smoke dust valuable element | |
| CN101987733A (en) | Method for separating potassium and rubidium from lepidolite processing fluid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100210 Termination date: 20100505 |