CN1122111C - Method for preparing high-purity zinc oxide by using smithsonite - Google Patents
Method for preparing high-purity zinc oxide by using smithsonite Download PDFInfo
- Publication number
- CN1122111C CN1122111C CN01114554A CN01114554A CN1122111C CN 1122111 C CN1122111 C CN 1122111C CN 01114554 A CN01114554 A CN 01114554A CN 01114554 A CN01114554 A CN 01114554A CN 1122111 C CN1122111 C CN 1122111C
- Authority
- CN
- China
- Prior art keywords
- temperature
- smithsonite
- znso
- zinc oxide
- zinc
- 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.)
- Expired - Fee Related
Links
Classifications
-
- 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
Landscapes
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The present invention relates to a method for preparing zinc oxide with high purity of at least 99.7% from smithsonite, which is characterized in that the present invention adopts smithsonite stones as base materials and prepares zinc oxides with high purity of at least 99.7% by the steps: leaching H2 SO4, doping Zn powder for removing impurities to prepare zinc carbonate hydroxide and finally vaporizing at the high temperature of 1700 DEG C to 2000 DEG C.The recovery rate of zinc is 90%. The present invention has the advantages of simple manufacturing process, little investment, largely lowered cost, widened application range of raw materials, realized low cost production and possession of strong market competitiveness, and the quality of products is superior to the standard of GB/T3185-92.
Description
The present invention relates to a kind of method of producing height 〉=99.7% pure zinc oxide by smithsonite.
The method of the high-purity zinc oxide of China's production at present (content is 〉=99.7%) is to adopt 1
#Zinc ingot metal is a raw material, produces under 1000 ℃ of left and right sides temperature through indirect method, and this method production cost height adopts the ingredient requirement height, deficiency in economic performance, and the market competitiveness is low.
The objective of the invention is to overcome above-mentioned defective, the method by preparing high-purity zinc oxide by using smithsonite that a kind of raw material is wide, low-grade, production cost is low is provided.
Technical scheme of the present invention: the method by preparing high-purity zinc oxide by using smithsonite is that the low-grade smithsonite masonry of employing is a base-material, through H
2SO
4Leaching, removal of impurities transform produces zinc subcarbonate, obtains 〉=99.7% high pure zinc oxide through the high-temperature evaporation zinc subcarbonate again, and its concrete steps are as follows:
A, base-material screening are that low-grade smithsonite stone is pulverized, and screen as base-material through 120 eye mesh screens then;
B, employing concentration are the H of 60g/L~100g/L
2SO
4Solution mixes with screening base-material well, carries out the stirring reaction leaching in steel basin, and stirring leaching temperature is 80 ℃~90 ℃, refilters and obtains ZnSO
4Solution, with the lime neutralization, its pH value is 4.5~5.2;
C, employing are mixed the method for Zn powder and are removed impurity, promptly at ZnSO
4Mix Zn powder and CuSO in the solution
4Stir, its whipping temp is 80 ℃~90 ℃, and the stirring reaction time is 1~2 hour, thereby removes Cu, Co and Ni impurity, mixes Zn powder and CuSO
4Stir, whipping temp is 50 ℃~60 ℃, removes Cu and Cd impurity, and the time is 1 hour, mixes hydrogen peroxide at last and reacted 1 hour when temperature is 60 ℃, removes remaining manganese, iron contamination, and obtains ZnSO
4Scavenging solution;
D, at ZnSO
4Mix NH in the scavenging solution
4HCO
3To pH value be 7~8, i.e. ZnSO
4Be converted into zinc subcarbonate;
E, zinc subcarbonate is placed the vaporization of heating in the High Temperature Furnaces Heating Apparatus, Heating temperature is 1700 ℃~2000 ℃, and zinc subcarbonate is 1700 ℃~2000 ℃ and high-temperature evaporation receives 〉=99.7% high-purity zinc oxide through the cooling bag collection again in temperature.
In sum, technology of the present invention is simple, less investment, reduced production cost, widen the raw material scope of application, non-environmental-pollution in process of production, through high-temperature evaporation method (1700 ℃~2000 ℃) but production purity is 〉=99.7% zinc oxide, quality product is better than the standard of GB/T3185-92, realized low cost production, the very strong market competitiveness has been arranged.
Below in conjunction with embodiment the present invention is further described.
Embodiment: as make 0.98 kilogram, content is that 〉=99.7% zinc oxide step is as follows:
1, getting 4.5 kilograms in the smithsonite stone that contains zinc 20%, through ball milling to 120 order, is the H of 60g/L with concentration
2SO
4Solution 28L, temperature are 85 ℃~90 ℃, put into steel basin and stir leaching 1 hour, filter and obtain ZnSO
4Solution, being neutralized to pH value with lime is 5.
2, removal of impurities divides three steps to carry out, and the first step adds Zn powder and CuSO respectively
4Each 15 gram, temperature of reaction is controlled to be 85 ℃~90 ℃, and stirring reaction 1.5 hours can be removed Cu, Co, Ni impurity; Second step was got Zn powder and CuSO again
4Each 5 gram adds ZnSO
4In the solution, temperature of reaction is controlled at 50 ℃~55 ℃, can remove Cu, Cd impurity; The 3rd step added hydrogen peroxide 10 grams, and temperature of reaction is 60 ℃, reacts 1 hour, removes remaining Mn, Fe, obtains ZnSO
4Scavenging solution.
3, at ZnSO
4Add NH in the scavenging solution
4HCO
3To pH value be 7.5, i.e. ZnSO
4Be converted into zinc subcarbonate.
4, with zinc subcarbonate in High Temperature Furnaces Heating Apparatus internal heating to 1700 ℃~2000 ℃ of vaporizations, obtain 0.98 kilogram through the cooling bag collection, content is 〉=99.7% zinc oxide, its quality is better than (GB/T3185-92) standard.
Claims (1)
1, by the method for preparing high-purity zinc oxide by using smithsonite, it is characterized in that adopting low-grade smithsonite masonry is base-material, through H
2SO
4Zinc subcarbonate is produced in leaching, removal of impurities, obtains 〉=99.7% high-purity zinc oxide through the high-temperature evaporation zinc subcarbonate again, and its concrete steps are as follows:
A, base-material screening are that low-grade smithsonite stone is pulverized, and screen as base-material through 120 eye mesh screens then;
B, employing concentration are the H of 60g/L~100g/L
2SO
4Solution mixes with screening base-material well, carries out the stirring reaction leaching in steel basin, and stirring leaching temperature is 80 ℃~90 ℃, refilters and obtains ZnSO
4Solution, with the lime neutralization, its pH value is 4.5~5.2;
C, employing are mixed the method for Zn powder and are removed impurity, promptly at ZnSO
4Mix Zn powder and CuSO in the solution
4Stir, its whipping temp is 80 ℃~90 ℃, and the stirring reaction time is 1~2 hour, thereby removes Cu, Co and Ni, mixes Zn powder and CuSO again
4Stir, whipping temp is 50 ℃~60 ℃, removes Cu and Cd, and the time is 1 hour, mixes hydrogen peroxide at last and reacted 1 hour when temperature is 60 ℃, removes remaining manganese, iron contamination, and obtains ZnSO
4Scavenging solution.
D, at ZnSO
4Mix NH in the scavenging solution
4HCO
3To pH value be 7~8, i.e. ZnSO
4Be converted into zinc subcarbonate;
E, zinc subcarbonate placed heat vaporization in the High Temperature Furnaces Heating Apparatus, Heating temperature is 1700 ℃~2000 ℃, and zinc subcarbonate is 1700 ℃~2000 ℃ and high-temperature evaporation receives 〉=99.7% high-purity zinc oxide through the cooling bag collection again in temperature.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN01114554A CN1122111C (en) | 2001-06-22 | 2001-06-22 | Method for preparing high-purity zinc oxide by using smithsonite |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN01114554A CN1122111C (en) | 2001-06-22 | 2001-06-22 | Method for preparing high-purity zinc oxide by using smithsonite |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1321783A CN1321783A (en) | 2001-11-14 |
CN1122111C true CN1122111C (en) | 2003-09-24 |
Family
ID=4661192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN01114554A Expired - Fee Related CN1122111C (en) | 2001-06-22 | 2001-06-22 | Method for preparing high-purity zinc oxide by using smithsonite |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN1122111C (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105692684A (en) * | 2016-03-17 | 2016-06-22 | 安徽颖达锌业发展有限公司 | High-purity zinc oxide production technology |
CN106241857B (en) * | 2016-08-18 | 2018-07-24 | 江苏万祥锌业有限公司 | A kind of nano zine oxide preparation process |
CN106745195B (en) * | 2017-01-21 | 2018-06-08 | 宁夏京成天宝饲料添加剂有限公司 | The closed cycle new preparation process of zinc sulfate and zinc oxide |
-
2001
- 2001-06-22 CN CN01114554A patent/CN1122111C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN1321783A (en) | 2001-11-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101348280B (en) | Method for preparing electronic grade non-selenium manganomanganic oxide from dialogite | |
JP6610425B2 (en) | Method for producing nickel powder | |
JPS59146920A (en) | Manufacture of pure metal silicon | |
KR101386245B1 (en) | separation method of silicon dioxide and magnesia using ferronickel slag, Menufacturing method of a fertilizer containing silicic acid and magnesia | |
JP2017150063A5 (en) | ||
CN100336924C (en) | Method for preparing primary titanium-rich material from high calcium-magnesium-titanium headings | |
CN115583641A (en) | Method for preparing battery-grade iron phosphate by cooperation of pyrite cinder and waste lithium iron phosphate cores | |
CN1122111C (en) | Method for preparing high-purity zinc oxide by using smithsonite | |
CN110358926A (en) | The method that vanadium slag short route prepares vanadyl oxalate | |
CN1644513A (en) | Direct production of electron grade high purity trimangnese tetraoxide from ores | |
CN113528826A (en) | Method for recovering metal in laterite-nickel ore slag | |
WO2001042136A1 (en) | Refining of metallurgical grade silicon | |
AU2017223933B2 (en) | Method for producing nickel powder | |
CN103449482B (en) | A kind of method utilizing serpentine to prepare magnesium oxide, nickel, cobalt and white carbon black | |
CN110195159A (en) | A kind of method that spodumene prepares alusil alloy and enriching lithium | |
KR20010084867A (en) | Process for the production of extra fine powder of Cobalt | |
CN1365948A (en) | Process for preparing industrial beryllium oxide by sulfuric acid method | |
JPH08311510A (en) | Production of copper-tungsten mixed powder | |
CN106892455A (en) | The green clean method for preparing of vanadium compounds | |
KR20100041183A (en) | Method for leaching magnesium and preparing glass water using sulfuric acid from nickel-slag | |
KR102508854B1 (en) | Manufacturing method of zeolite using lithium residue | |
CN118086695A (en) | Method for recycling metal arsenic from arsenic sulfide slag by adopting zinc powder | |
CN115108574B (en) | High-purity purification process of 4N high-purity calcium carbonate | |
CN1111510C (en) | Process for preparing activated zinc oxide | |
KR101486669B1 (en) | Production of metalic tin from waste materials of the contain tin |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C06 | Publication | ||
PB01 | Publication | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |