CN1170766A - Method for producing high-grade zinc oxide - Google Patents
Method for producing high-grade zinc oxide Download PDFInfo
- Publication number
- CN1170766A CN1170766A CN 96118258 CN96118258A CN1170766A CN 1170766 A CN1170766 A CN 1170766A CN 96118258 CN96118258 CN 96118258 CN 96118258 A CN96118258 A CN 96118258A CN 1170766 A CN1170766 A CN 1170766A
- Authority
- CN
- China
- Prior art keywords
- zinc oxide
- air flue
- grade
- producing high
- cyclonic separator
- 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
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000011787 zinc oxide Substances 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000004744 fabric Substances 0.000 claims abstract description 11
- 238000000926 separation method Methods 0.000 abstract description 8
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 description 12
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229960004424 carbon dioxide Drugs 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a method for producing high-grade zinc oxide by using a direct method. The main characteristic is that in the technological process of producing zinc oxide by direct method, cyclone separator is set between air channel and blower or between blower and cloth bag chamber, and the secondary zinc oxide powder collected by the cone bottom of cyclone separator is fed into air channel by means of feeding device set at inlet of air channel to make it undergo the process of secondary separation and recovery. The invention improves the purity of the product, and the grade of the product can reach more than 98.5 percent.
Description
The present invention relates to a kind of method of producing high-grade zinc oxide.
The production method of zinc oxide adopts indirect method and direct method usually.Direct method is to mix by a certain percentage with coal with the breeze that contains zinc oxide, places on the smelting stove fire grate, is covered with the scorching hot coal of one deck on the fire grate.Make coal combustion heating breeze with gas blower drum air in stove.At high temperature, the zinc oxide in the breeze is reduced into metallic zinc by carbon or carbon monoxide, and metallic zinc is evaporated to be left burner hearth and enter oxidizing chamber and be oxidized into Zinc oxide powder.Zinc oxide powder is removed and is collected zinc oxide product by gas blower suction cloth bag chamber with cloth bag after partial impurities enters the further settlement separate impurity of air flue with air-flow cooling and gravity settling.
With the impurity of carrying secretly in the gravity settling separation Zinc oxide powder, depend on the settling velocity of impurity particle to a great extent, and settling velocity is relevant with quality, granularity and the density of impurity particle.If the granularity that gas velocity becomes big or impurity and density is above certain limitation, then impurity can't separatedly fall in that gravity settling is indoor.Therefore, with the zinc oxide product of direct method production, its zinc oxide content belongs to secondary oxidative zinc generally at 86-92% at present.
The object of the present invention is to provide a kind of less investment, profitable, method that technology is simply produced high-grade zinc oxide.
Technical scheme of the present invention is: producing with direct method in the traditional technology of zinc oxide, behind the settling methods separating impurity, again through the further separation of oxygenated zinc impurity of cyclonic separator to improve product purity, it is characterized in that: setting up cyclonic separator between air flue and the gas blower or between gas blower and cloth bag chamber, and setting up the feeding device that communicates with air flue at top, air flue ingress.
Enter cyclonic separator or after the gas blower pressurization, enter cyclonic separator through air flue through the air-flow that contains Zinc oxide powder after the separation of gravity settling separation chamber among the present invention, make the impurity in the air-flow in cyclonic separator, further obtain separating, thereby improved the purity of product, its grade reaches more than 98.5%, belongs to high-grade zinc oxide.Simultaneously, will bore the secondary oxidative zinc powder that comes out at the end, and join by feeding device and carry out Separation and Recovery again in the air flue from cyclonic separator.
Fig. 1 produces the zinc oxide schematic flow sheet for direct method;
Fig. 2 is for being arranged on cyclonic separator among the present invention the schematic flow sheet between air flue and the blower fan;
Fig. 3 is for being arranged on cyclonic separator among the present invention the schematic flow sheet between blower fan and the cloth bag chamber.
Below in conjunction with the description of drawings embodiments of the invention.
Embodiment 1:
As shown in Figure 2, between air flue 1 and gas blower 2, by pipe connection cyclonic separator 5.The air-flow that contains Zinc oxide powder and impurity that comes out in the settling pocket enters the cooling bend pipe and enters into air flue 1 again, tangential direction by pipeline is to be launched the inward turning line and enters cyclonic separator 5, because action of centrifugal force, bigger particle is thrown on the inwall of separator and drops to the awl end, less Zinc oxide powder is crossed gas blower 2 with air communication and is entered cloth bag chamber 3, is collected by cloth bag 4.Be provided with closed rotating paddle feeding machine 6 in the ingress of air flue, be provided with multihole lamina 7 in the air flue below feeding machine.Cyclonic separator is bored the Zinc oxide powder of collecting at the end, be added to and make it carry out secondary separation in the feeding machine 6.
Embodiment 7:
As shown in Figure 3, air flue 1 connects gas blower 2, uses pipe connection cyclonic separator 5 between gas blower 2 and cloth bag chamber 3.The air-flow that contains Zinc oxide powder and impurity that comes out in the settling pocket enters the cooling bend pipe and enters into air flue 1 again, be expansion inward turning line by gas blower 2 with tangential direction by pipeline and enter cyclonic separator 5, because action of centrifugal force, bigger particle is thrown on the inwall of separator and drops to the awl end, less Zinc oxide powder enters cloth bag chamber 3 with air-flow, is collected by cloth bag 4.Be provided with closed rotating paddle feeding machine 6 in the ingress of air flue, be provided with multihole lamina 7 in the air flue below feeding machine.Cyclonic separator is bored the Zinc oxide powder of collecting at the end, be added to and make it carry out secondary separation in the feeding machine 6.
Claims (2)
1, a kind of method of producing high-grade zinc oxide, have direct method and produce the technical process of zinc oxide, it is characterized in that: setting up cyclonic separator between air flue and the gas blower or between gas blower and cloth bag chamber, and the feeding device that communicates with air flue is being set at top, air flue ingress.
2, method according to claim 1 is characterized in that: its feeding device is closed rotating paddle feeding machine, is provided with multihole lamina in the air flue below feeding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96118258 CN1170766A (en) | 1996-07-11 | 1996-07-11 | Method for producing high-grade zinc oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96118258 CN1170766A (en) | 1996-07-11 | 1996-07-11 | Method for producing high-grade zinc oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1170766A true CN1170766A (en) | 1998-01-21 |
Family
ID=5124934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96118258 Pending CN1170766A (en) | 1996-07-11 | 1996-07-11 | Method for producing high-grade zinc oxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1170766A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1325556C (en) * | 2004-09-24 | 2007-07-11 | 中国石油化工股份有限公司 | Large hole nano-composite resin material and its preparation method |
| CN116216356A (en) * | 2023-02-21 | 2023-06-06 | 杭州广恒锌业有限公司 | Indirect zinc oxide particle collection equipment and operation method thereof |
-
1996
- 1996-07-11 CN CN 96118258 patent/CN1170766A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1325556C (en) * | 2004-09-24 | 2007-07-11 | 中国石油化工股份有限公司 | Large hole nano-composite resin material and its preparation method |
| CN116216356A (en) * | 2023-02-21 | 2023-06-06 | 杭州广恒锌业有限公司 | Indirect zinc oxide particle collection equipment and operation method thereof |
| CN116216356B (en) * | 2023-02-21 | 2023-09-08 | 杭州广恒锌业有限公司 | Indirect zinc oxide particle collection equipment and operation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |