CN103817339B - The way of distillation produces nanoscale high-purity zinc powder technique - Google Patents
The way of distillation produces nanoscale high-purity zinc powder technique Download PDFInfo
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- CN103817339B CN103817339B CN201410041583.2A CN201410041583A CN103817339B CN 103817339 B CN103817339 B CN 103817339B CN 201410041583 A CN201410041583 A CN 201410041583A CN 103817339 B CN103817339 B CN 103817339B
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Abstract
A kind of way of distillation produces nanoscale high-purity zinc powder technique, it is characterized in that through fusing, distillation, backflow, hyperthermia and superheating, condensation process step.Used device is few, and production technology is simple, processes continuously, and production capacity is large, and cost is low, pollution-free, and the zinc powder particle size of production is controlled at 50-100nm, high purity more than 99.9995%, active good.
Description
Technical field
The present invention relates to a kind of metal deep working method, particularly a kind of way of distillation produces nanoscale high-purity zinc powder technique.
Background technology
Nanoscale zinc powder is able to increasing application in hydrometallurgy purification and impurity removal, and purity requirement is also more and more higher.But mainly contain in the method for existing production zinc powder: super-fine zinc dust is the tower retort of carborundum and flame-insulating type reflection retort distillating method, and purification zinc powder is ore-smelting electric furnace reduction distillation method and air atomizing blowing process.These methods really cannot realize nanoscale high-purity zinc powder and produce, and the product granularity of production is thick, purity is not high, poor activity, clean-up effect are bad.
Summary of the invention
The object of the invention is the weak point in order to overcome above-mentioned technique, and provide a kind of used device few, production technology is simple, cost is low, pollution-free, production capacity is large, and the zinc powder particle size of production is controlled, purity is high, the active good way of distillation produces nanoscale high-purity zinc powder technique.
For achieving the above object, the concrete technology step of the present invention's employing is as follows:
1. melt: grade zinc or useless assorted zinc are placed in crucible type melting furnace, melt at 500 DEG C ~ 550 DEG C temperature and remove surface oxidation slag.
2. distill: above-mentioned gained added in induction type electric heating crucible retort without slag metallic zinc liquid, distill at 900 DEG C ~ 910 DEG C temperature.
3. reflux: imported by the zinc fume of output in above-mentioned distillation in backflow and hyperthermia and superheating dish, reflux section temperature 900 DEG C ~ 910 DEG C, realize zinc fume partial condensation backflow decontamination, the high-boiling-point impurity in zinc fume returns with backflow zinc again and distills.
4. hyperthermia and superheating: the pure zinc fume after above-mentioned backflow enters in the superheat section in backflow and hyperthermia and superheating dish, carries out hyperthermia and superheating process at 1200 DEG C ~ 1600 DEG C temperature.
5. condensation: by the high temperature zinc steam after above-mentioned hyperthermia and superheating under pure nitrogen gas atmosphere, sharply condensation at 50 DEG C ~ 80 DEG C temperature, output nanoscale high-purity zinc powder.
The present invention is owing to adopting above process, and used device is few, and production technology is simple, processes continuously, and production capacity is large, and cost is low, pollution-free, and the zinc powder particle size of production is controlled at 50-100nm, high purity more than 99.9995%, active good.
Accompanying drawing explanation
Fig. 1 is present invention process flow chart.
Detailed description of the invention
1. choosing grade zinc is placed in crucible type melting furnace, melts and remove surface oxidation slag at 500 DEG C ~ 550 DEG C temperature, in fusion process, within every 10 minutes, drops into zinc ingot metal 25kg, carries out continuous dosing, melt processed.
2. add in induction type electric heating crucible retort by above-mentioned gained without slag metallic zinc liquid, distill at 900 DEG C ~ 910 DEG C temperature.
3. import in backflow and hyperthermia and superheating dish by the zinc fume of output in above-mentioned distillation, reflux section temperature 900 DEG C ~ 910 DEG C, realize zinc fume partial condensation backflow decontamination, the high-boiling-point impurity in zinc fume returns with backflow zinc again and distills.
4. the pure zinc fume after above-mentioned backflow enters in the superheat section in backflow and hyperthermia and superheating dish, at 1200 DEG C ~ 1600 DEG C temperature, carry out hyperthermia and superheating process.
5. by the high temperature zinc steam after above-mentioned hyperthermia and superheating under pure nitrogen gas atmosphere, 700 ~ 1000 times of sharply condensations are carried out at 50 DEG C ~ 80 DEG C temperature, namely the unit interval transferring energy of condenser is 700 ~ 1000 times that zinc fume is condensed into that zinc powder releases energy, the zinc powder purity of output more than 99.9995%, granularity is at the nanoscale high-purity zinc powder of 50-100nm.
Claims (1)
1. the way of distillation produces a nanoscale high-purity zinc powder technique, it is characterized in that through following processing step:
(1) melt: grade zinc or useless assorted zinc are placed in crucible type melting furnace, melt at 500 DEG C ~ 550 DEG C temperature and remove surface oxidation slag;
(2) distill: above-mentioned gained added in induction type electric heating crucible retort without slag metallic zinc liquid, distill at 900 DEG C ~ 910 DEG C temperature;
(3) reflux: imported by the zinc fume of output in above-mentioned distillation in backflow and hyperthermia and superheating dish, reflux section temperature 900 DEG C ~ 910 DEG C, realize zinc fume partial condensation backflow decontamination, the high-boiling-point impurity in zinc fume returns with backflow zinc again and distills;
(4) hyperthermia and superheating: the pure zinc fume after above-mentioned backflow enters in the superheat section in backflow and hyperthermia and superheating dish, carries out hyperthermia and superheating process at 1200 DEG C ~ 1600 DEG C temperature;
(5) condensation: by the high temperature zinc steam after above-mentioned hyperthermia and superheating under pure nitrogen gas atmosphere, sharply condensation at 50 DEG C ~ 80 DEG C temperature, output nanoscale high-purity zinc powder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410041583.2A CN103817339B (en) | 2014-01-28 | 2014-01-28 | The way of distillation produces nanoscale high-purity zinc powder technique |
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| CN201410041583.2A CN103817339B (en) | 2014-01-28 | 2014-01-28 | The way of distillation produces nanoscale high-purity zinc powder technique |
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| Publication Number | Publication Date |
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| CN103817339A CN103817339A (en) | 2014-05-28 |
| CN103817339B true CN103817339B (en) | 2016-01-20 |
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| CN201410041583.2A Expired - Fee Related CN103817339B (en) | 2014-01-28 | 2014-01-28 | The way of distillation produces nanoscale high-purity zinc powder technique |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105728740B (en) * | 2014-12-08 | 2018-01-23 | 云南云铜锌业股份有限公司 | A kind of method for distilling zinc powder |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1262516A (en) * | 1968-07-08 | 1972-02-02 | Cie Metaux Doverpelt Lommel | Method for the manufacture of zinc dust |
| CN1431074A (en) * | 2003-01-24 | 2003-07-23 | 翟国华 | Method for producing zinc powder and its mfg. device |
| CN1994630A (en) * | 2005-12-28 | 2007-07-11 | 北京北矿锌业有限责任公司 | Production equipment of high-purity superfine active zinc powder and method for preparing same |
| CN102029398A (en) * | 2009-09-28 | 2011-04-27 | 江苏冶建锌业有限公司 | Preparation method of high-purity zinc powder |
| RU2457072C1 (en) * | 2011-05-27 | 2012-07-27 | Алексей Иванович Гончаров | Method of producing zinc powder and plant to this end |
| CN102615289A (en) * | 2011-01-28 | 2012-08-01 | 杭州华纳塔器科技有限公司 | Evaporation-condensation method for preparing superfine metal powder |
-
2014
- 2014-01-28 CN CN201410041583.2A patent/CN103817339B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1262516A (en) * | 1968-07-08 | 1972-02-02 | Cie Metaux Doverpelt Lommel | Method for the manufacture of zinc dust |
| CN1431074A (en) * | 2003-01-24 | 2003-07-23 | 翟国华 | Method for producing zinc powder and its mfg. device |
| CN1994630A (en) * | 2005-12-28 | 2007-07-11 | 北京北矿锌业有限责任公司 | Production equipment of high-purity superfine active zinc powder and method for preparing same |
| CN102029398A (en) * | 2009-09-28 | 2011-04-27 | 江苏冶建锌业有限公司 | Preparation method of high-purity zinc powder |
| CN102615289A (en) * | 2011-01-28 | 2012-08-01 | 杭州华纳塔器科技有限公司 | Evaporation-condensation method for preparing superfine metal powder |
| RU2457072C1 (en) * | 2011-05-27 | 2012-07-27 | Алексей Иванович Гончаров | Method of producing zinc powder and plant to this end |
Non-Patent Citations (1)
| Title |
|---|
| 超细锌粉的生产实践;陈志强;《湖南有色金属》;19990930;第15卷(第5期);第15-17页 * |
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