CN105692684A - High-purity zinc oxide production technology - Google Patents
High-purity zinc oxide production technology Download PDFInfo
- Publication number
- CN105692684A CN105692684A CN201610152881.8A CN201610152881A CN105692684A CN 105692684 A CN105692684 A CN 105692684A CN 201610152881 A CN201610152881 A CN 201610152881A CN 105692684 A CN105692684 A CN 105692684A
- Authority
- CN
- China
- Prior art keywords
- enters
- roasting
- zinc oxide
- purity
- zinc carbonate
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G9/00—Compounds of zinc
- C01G9/02—Oxides; Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G9/00—Compounds of zinc
- C01G9/02—Oxides; Hydroxides
- C01G9/03—Processes of production using dry methods, e.g. vapour phase processes
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a high-purity zinc oxide production technology. According to the technology, raw ore pretreatment and compounding are carried out, a mineralizing agent and ore concentrate are mixed according to a certain proportion, and the mixed material enters a low-temperature roasting furnace; roasting is carried out, lime milk is added into filter liquor under certain conditions, the mixture is stirred for 20 min, then the pH value is adjusted to be 8-10, the mixture continues to be stirred for one hour and filtered, and the filter liquor enters a zinc depositing system; residue filtering, pulping, washing and dehydrating are carried out, basic zinc carbonate is fed into a fluid bed drier through a disk feeder after being smashed, and dried in a pneumatic mode with hot air, dried basic zinc carbonate enters a material collecting device along with air flow to be collected, tail gas is exhausted completely through an exhaust fan after passing through a cyclone separator and a bag-type dust collector, and activated zinc oxide obtained after roasting and drying can be packaged when being cooled to 40-50 DEG C. By the adoption of the calcination temperature of 500-580 DEG C, purity of obtained zinc oxide can reach 99.7 or above and zinc oxide has high economic value.
Description
Technical field
The present invention relates to zinc oxide production technical field, particularly belong to a kind of high-purity zinc oxide production technology。
Background technology
The high ore deposit of general zinc content that produces of current zinc oxide product carries out roasting and becomes zinc calcine to make raw material, because its rate containing zinc is higher, lixiviate is relatively easy。Along with exploitation all the year round, high-grade mineral resources is fewer and feweri, and grade is gradually lowered, and people are existing, and oneself starts to note the utilization of zinc oxide ore。But relatively low (valuable element below the content Zn30% of the zinc oxide ore generally rate containing zinc；Pb0.15%；Cu0.008%；Mn0.06%), and complicated component, how to exist with smithsonite, franklinite and smithsonite, gangue content ferrum oxide, silicon oxide, calcium oxide, high (the about Fe2O34-7% respectively of content of magnesia in Ore；SiO23-5%；CaO30-32%；MgO7-8%)。Comprehensive reutilization is worth little, and the ore dressing of zinc, acidleach is all more difficult, and beneficiation cost is high, is the long-standing significant technology issues of domestic and international ore dressing。Zinc oxide ore to the method for the lixiviate of zinc oxide ore mostly, is leached, although zinc leaching rate increases by recent domestic with the solution of zinc sulfate containing strong acid, but it is also high to enter the ferrum of solution, silicon amount, deironing difficulty, and it is big to consume amount of reagent, and it is many that zinc taken away by cleaning mixture。
Summary of the invention
For the problems referred to above, having it is an object of the invention to provide a kind of high-purity zinc oxide production technology, overcome the deficiencies in the prior art, the present invention adopts the calcining heat of 500-580 DEG C, namely available purity zinc oxide can reach more than 99.7%, has significantly high economic worth；It addition, the processing method energy consumption of the present invention is low, efficiency is high, leaching agent recycles。
The technical solution used in the present invention is as follows:
A kind of high-purity zinc oxide production technology, (1) raw ore pretreatment, Ore enters crusher in crushing, screening, grinding, ore dressing, and the classified ore pulp reaching 200 orders 90% enters reverse flotation, and the concentrate after thick four sweeps two essences enters thickening filtration system；
(2) dispensing, mixes according to a certain percentage by mineralizer and concentrate, and the material mixed enters low-temperature bake stove；
(3) roasting, compound is at the temperature of 450～500 DEG C, and roasting 2h, roasting material water is cooled to 60 DEG C, enters Dynamic Water soaking system and test；The flue gas removing dust of roasting sends into basic zinc carbonate settling system with blower fan after processing；
(4) adding lime cream under certain condition in filtrate, stir 20min, then regulate pH value to 8-10, continue stirring 1h, filter, filtrate enters heavy Zn system；
(5)
(5) because containing Na2SO4, therefore carrying out pulling an oar and washing with the hot water of 50～60 DEG C in filtering residue making beating, washing, dehydration filtering residue, to be removed by impurity, the purity of basic zinc carbonate is improved；
(6) fluid bed dryer is sent into disk feeder after being smashed by basic zinc carbonate, pneumatic conveying drying is carried out by hot-air, control baking temperature 105～120 DEG C, outlet temperature 95～105 DEG C, dried basic zinc carbonate enters loading head with air-flow and collects, tail gas, after cyclone separator and sack cleaner, is extracted out emptying by air exhauster；
(7) the dried basic zinc carbonate of roasting is sent in eddy flow dynamic roasting stove, calcines 3h at 500～580 DEG C, and the activated zinc oxide obtained is cooled to 40～50 DEG C and can pack。
(5) washings 6%BaCl2 solution。
Compared with the prior art, beneficial effects of the present invention is as follows:
The present invention is by suspension calcining process, the effect of air-flow makes intergranular making contact probability reduce, it is to avoid granule is reunited because of hydrogen bond action, improves the dispersibility of granule。
Detailed description of the invention
A kind of high-purity zinc oxide production technology, (1) raw ore pretreatment, Ore enters crusher in crushing, screening, grinding, ore dressing, and the classified ore pulp reaching 200 orders 90% enters reverse flotation, and the concentrate after thick four sweeps two essences enters thickening filtration system；
(2) dispensing, mixes according to a certain percentage by mineralizer and concentrate, and the material mixed enters low-temperature bake stove；
(3) roasting, compound is at the temperature of 450～500 DEG C, and roasting 2h, roasting material water is cooled to 60 DEG C, enters Dynamic Water soaking system and test；The flue gas removing dust of roasting sends into basic zinc carbonate settling system with blower fan after processing；
(4) adding lime cream under certain condition in filtrate, stir 20min, then regulate pH value to 8-10, continue stirring 1h, filter, filtrate enters heavy Zn system；
(5) because containing Na2SO4, therefore carrying out pulling an oar and washing with the hot water of 50～60 DEG C in filtering residue making beating, washing, dehydration filtering residue, to be removed by impurity, the purity of basic zinc carbonate is improved；Washings 6%BaCl2 solution；
(6) fluid bed dryer is sent into disk feeder after being smashed by basic zinc carbonate, pneumatic conveying drying is carried out by hot-air, control baking temperature 105～120 DEG C, outlet temperature 95～105 DEG C, dried basic zinc carbonate enters loading head with air-flow and collects, tail gas, after cyclone separator and sack cleaner, is extracted out emptying by air exhauster；
(7) the dried basic zinc carbonate of roasting is sent in eddy flow dynamic roasting stove, calcines 3h at 500～580 DEG C, and the activated zinc oxide obtained is cooled to 40～50 DEG C and can pack。The present invention adopts the calcining heat of 500-580 DEG C, and namely available purity zinc oxide can reach more than 99.7%, has significantly high economic worth；It addition, the processing method energy consumption of the present invention is low, efficiency is high, leaching agent recycles。
The ultimate principle of the present invention, principal character and advantages of the present invention have more than been shown and described。Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; described in above-described embodiment and description is that principles of the invention is described; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements both fall within the claimed scope of the invention。Claimed scope is defined by appending claims and equivalent thereof。
Claims (2)
1. a high-purity zinc oxide production technology, it is characterized in that: (1) raw ore pretreatment, Ore enters crusher in crushing, screening, grinding, ore dressing, the classified ore pulp reaching 200 orders 90% enters reverse flotation, and the concentrate after thick four sweeps two essences enters thickening filtration system；
(2) dispensing, mixes according to a certain percentage by mineralizer and concentrate, and the material mixed enters low-temperature bake stove；
(3) roasting, compound is at the temperature of 450～500 DEG C, and roasting 2h, roasting material water is cooled to 60 DEG C, enters Dynamic Water soaking system and test；The flue gas removing dust of roasting sends into basic zinc carbonate settling system with blower fan after processing；
(4) adding lime cream under certain condition in filtrate, stir 20min, then regulate pH value to 8-10, continue stirring 1h, filter, filtrate enters heavy Zn system；
(5) because containing Na2SO4, therefore carrying out pulling an oar and washing with the hot water of 50～60 DEG C in filtering residue making beating, washing, dehydration filtering residue, to be removed by impurity, the purity of basic zinc carbonate is improved；
(6) fluid bed dryer is sent into disk feeder after being smashed by basic zinc carbonate, pneumatic conveying drying is carried out by hot-air, control baking temperature 105～120 DEG C, outlet temperature 95～105 DEG C, dried basic zinc carbonate enters loading head with air-flow and collects, tail gas, after cyclone separator and sack cleaner, is extracted out emptying by air exhauster；
(7) the dried basic zinc carbonate of roasting is sent in eddy flow dynamic roasting stove, calcines 3h at 500～580 DEG C, and the activated zinc oxide obtained is cooled to 40～50 DEG C and can pack。
2. a kind of high-purity zinc oxide production technology according to claim 1, it is characterised in that: (5) washings 6%BaCl2 solution。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610152881.8A CN105692684A (en) | 2016-03-17 | 2016-03-17 | High-purity zinc oxide production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610152881.8A CN105692684A (en) | 2016-03-17 | 2016-03-17 | High-purity zinc oxide production technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105692684A true CN105692684A (en) | 2016-06-22 |
Family
ID=56221723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610152881.8A Pending CN105692684A (en) | 2016-03-17 | 2016-03-17 | High-purity zinc oxide production technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105692684A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106006716A (en) * | 2016-07-01 | 2016-10-12 | 赫章县金川锌业有限公司 | Method for producing direct-method zinc oxide by utilizing belt type roasting machine |
| CN107190159A (en) * | 2017-06-16 | 2017-09-22 | 河北长力金属制品有限公司 | A kind of method that zinc-containing alloy is prepared containing Zn scrap returns |
| CN109574650A (en) * | 2019-01-31 | 2019-04-05 | 武汉工程大学 | A kind of preparation method of the porous zinc aluminate ceramics of high wave |
| CN110791663A (en) * | 2019-11-05 | 2020-02-14 | 张艳芳 | Process for pre-treating and floating zinc oxide concentrate by utilizing residual heat of fluidized roasting |
| CN110921696A (en) * | 2019-12-06 | 2020-03-27 | 于宗春 | Drying and calcining processing technology of basic zinc carbonate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1210813A (en) * | 1998-07-24 | 1999-03-17 | 山西省稷山县福利化工厂 | Alkaline process for producing active zinc oxide |
| CN1321783A (en) * | 2001-06-22 | 2001-11-14 | 黄查清 | Method for preparing high-purity zinc oxide by using smithsonite |
| CN102181654A (en) * | 2011-03-14 | 2011-09-14 | 云南罗平锌电股份有限公司 | Method for recovering zinc, silver and copper from zinc leaching residue |
-
2016
- 2016-03-17 CN CN201610152881.8A patent/CN105692684A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1210813A (en) * | 1998-07-24 | 1999-03-17 | 山西省稷山县福利化工厂 | Alkaline process for producing active zinc oxide |
| CN1321783A (en) * | 2001-06-22 | 2001-11-14 | 黄查清 | Method for preparing high-purity zinc oxide by using smithsonite |
| CN102181654A (en) * | 2011-03-14 | 2011-09-14 | 云南罗平锌电股份有限公司 | Method for recovering zinc, silver and copper from zinc leaching residue |
Non-Patent Citations (2)
| Title |
|---|
| 佚名: ""高纯氧化锌生产工艺描述"", 《百度文库》 * |
| 王光辉等: "《水处理工程 上》", 31 January 2015, 中国环境出版社 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106006716A (en) * | 2016-07-01 | 2016-10-12 | 赫章县金川锌业有限公司 | Method for producing direct-method zinc oxide by utilizing belt type roasting machine |
| CN107190159A (en) * | 2017-06-16 | 2017-09-22 | 河北长力金属制品有限公司 | A kind of method that zinc-containing alloy is prepared containing Zn scrap returns |
| CN107190159B (en) * | 2017-06-16 | 2019-03-29 | 河北长力环保科技有限公司 | A method of zinc-containing alloy is prepared containing Zn scrap returns |
| CN109574650A (en) * | 2019-01-31 | 2019-04-05 | 武汉工程大学 | A kind of preparation method of the porous zinc aluminate ceramics of high wave |
| CN109574650B (en) * | 2019-01-31 | 2021-09-03 | 武汉工程大学 | Preparation method of high-wave-permeability porous zinc aluminate ceramic |
| CN110791663A (en) * | 2019-11-05 | 2020-02-14 | 张艳芳 | Process for pre-treating and floating zinc oxide concentrate by utilizing residual heat of fluidized roasting |
| CN110921696A (en) * | 2019-12-06 | 2020-03-27 | 于宗春 | Drying and calcining processing technology of basic zinc carbonate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105692684A (en) | High-purity zinc oxide production technology | |
| CN106587116B (en) | A kind of method for extracting lithium carbonate and aluminium hydroxide using lepidolite and flyash | |
| CN110510620B (en) | Purification method of high-purity quartz sand tailings | |
| CN101306426B (en) | Method for extracting iron washed ore from fly ash or slag | |
| CN107032372B (en) | A kind of method from lepidolite concentrate extraction lithium | |
| CN107324670B (en) | Device for producing high-activity magnesium oxide by utilizing magnesite tailings | |
| CN109013051A (en) | A kind of method and device of coal-based direct reduction magnetic separation production Langaloy | |
| CN109234486A (en) | A kind of method and device thereof of coal-based direct reduction baked for producing reduced iron | |
| CN103252207B (en) | Method for continuously preparing activated clay | |
| CN208776332U (en) | The production technology device of vanadic anhydride | |
| CN106966410B (en) | Rotary hearth furnace flue gas ash removal ash handling process | |
| CN105734272A (en) | Mechanical dynamic suspension synchronous roasting beneficiation method and device | |
| CN101274782A (en) | Method and apparatus for preparing high-intensity cobaltic-cobaltous oxide power | |
| CN106669962A (en) | Beneficiation method and system for calcium or calcareous and siliceous phosphorite and application method of beneficiation system | |
| CN110306037B (en) | Device and method for suspension roasting, oxidation and desulfurization of high-sulfur bauxite | |
| CN106824546A (en) | A kind of magnesite ore puies forward the method that silicon drops in magnesium | |
| CN110396593A (en) | A kind of method of high phosphorus iron ore concentrate high-temperature vapor roasting-acidleach dephosphorization | |
| CN110218013A (en) | With the method and apparatus of modified vertical mill system production ardealite building gypsum plaster | |
| CN209161850U (en) | Red mud magnetizing roast utilization system | |
| CN112028093A (en) | Preparation method of high-activity high-purity magnesium oxide | |
| CN210826301U (en) | Comprehensive utilization equipment system for gold smelting slag | |
| CN114789085A (en) | Method for preparing high-whiteness superfine kaolin powder from weathered kaolin | |
| CN1609004A (en) | Process of producing iron oxide red with waste iron ore slime | |
| CN108751751A (en) | A kind of heat of magnesite tailings selects technique | |
| CN112442601A (en) | Process for improving leaching rate of carbon-containing tellurium-containing refractory limestone type gold ore |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160622 |