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Build Your Online Product Catalogs?
| Product Name: |
Zinc oxide
|
| Supply Ability: |
20000tons |
| Related proudcts |
zinc white, zine oxide, flowers of zinc, |
| Specifications |
99.7%;99.5%;99;95 |
| Price Term: |
FOB |
| Port of loading: |
Tianjin Xin port |
| Minimum Order |
20tons |
| Unit Price: |
usd1620-2000/ton |
|
Chemical properties:
Characters white hexagonal system crystallization or powder. Tasteless, and quality is exquisite.
Melting point 1975 ℃
The relative density of 5.606
The refractive index of 2.008 ~ 2.029
Solubility soluble in acid, sodium hydroxide, ammonium chloride, insoluble in water, ethanol and ammonia water.
The production methods and zinc carbonate by firing.
By zinc oxide calcining decomposition hydrogen.
From rough zinc oxide into zinc smelting, then through high temperature air oxidation and into.
By melting zinc oxide.
Production methods currently USES the method have the zinc ingots of raw materials for indirect method (also says law), zinc ore as raw material to the direct method (also called the American law) and wet 3 kinds.
The indirect method. Response equation:
2 ZnO + O2-2 ZnO
Operating methods: electrolytic zinc ingots preparaed heating to 600 ~ 700 ℃ melting, in high temperature resistant crucible inside, make 1250 ~ 1300 ℃ high temperature melting gasification, into the hot air for oxidation, generated by cooling, a whirlwind zinc oxide separation, will fine particles with bag capture, namely the zinc oxide finished products.
The direct method. Response equation:
C + O2-CO2
CO2 + C, CO
ZnO + CO-Zn (steam) + CO2
Zn (steam) + CO + O2-ZnO + CO2
Operating methods: baking powder metal (or containing zinc material) and anthracite (or coke sad), limestone press 1-0. 5-0.05 proportion made into the ball. In 1300 ℃ the reduction smelting, kuangfen reduction of zinc oxide into zinc steam, and then the into the air for oxidation, by the capture of the generation of zinc oxide, the zinc oxide finished products.
Wet. With zinc sulfate zinc sulfate reacts with ash, again will separately and sodium carbonate and ammonia reaction to the of carbonate zinc and hydrogen zinc oxide as the raw material of zinc oxide. Reaction equations are as follows:
Zn + H2SO4-ZnSO4 + H2 ¡ü
ZnSO4 + Na2CO3-ZnCO3 + Na2SO4
ZnSO4 + 2 NH3 ¡¤ H2O and Zn (OH) 2 + (NH4) 2 SO4
With zinc carbonate as raw |
| Company: |
Xingtai Lang Bo Imp&Exp Trade Co.,Ltd
|
| Contact: |
Mr. Colin Lu |
| Address: |
Xiulan Road |
| Postcode: |
054000 |
| Tel: |
86 319 2603095 |
| Fax: |
86 319 2603095 |
| E-mail: |
|
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