Zinc oxide 99.7 for EVA foaming

原料：

锌锭

外观：

白色

包装：

25公斤

The zinc oxide of the method is more than 3 times lower. It has a wide range of uses. [Abstract]: In order to measure the activity of active zinc oxide, we have established several methods for measuring the activity of active zinc oxide. Among them are the determination of specific surface area, determination of iodine adsorption value, determination of activity reactivity and determination of ammonia water solubility, etc. The above-mentioned activity determination methods are now introduced as follows for the reference of relevant units and personnel. 1. Determination of specific surface area of active zinc oxide Specific surface area is the main indicator for measuring various active substances. There are many methods for measuring specific surface area. The most commonly used method is gas adsorption. Gas adsorption methods are divided into B classical methods, chromatography methods, flow methods, etc. However, these methods use complex instruments and have high operating requirements
The raw material of indirect zinc oxide is metal zinc ingots or zinc slag obtained through smelting. Zinc is converted into zinc vapor in the graphite crucible at a high temperature of 10 degrees Celsius, and is then oxidized into zinc oxide by the blown air, and zinc oxide particles are collected in the cooling tube. The indirect method was promoted by the French scientist Leclair in 2000, so it is called the French method! The process technology of zinc oxide produced by the indirect method is simple, but it is greatly affected by the raw materials! The zinc oxide produced by the indirect method has a particle size between microns and a content in.! In terms of output, the indirect method is the most important method for producing zinc oxide!
Indirect method zinc oxide can be used in rubber, varistor, phosphating solution, film, thermal conductive materials and other industries! The heavy metal content of zinc ingots or zinc slag directly affects the heavy metal content of the product. Zinc oxide with low heavy metal content can also be used in livestock feed, pharmaceuticals, healthcare and other industries!
Direct method zinc oxide is produced from zinc-containing minerals or impurities as raw materials! When zinc oxide reacts with coke when heated, it is reduced to metallic zinc vapor and is oxidized into zinc oxide by oxygen in the air. The zinc oxide particles obtained by the direct method are coarse and the purity is between!
Direct method zinc oxide is generally used in ceramics, glazes, glass, pigments, frit and other industries!
Ceramic grade zinc oxide
Zinc oxide, also known as zinc white, is an important ceramic chemical flux raw material. In the ceramic industry, zinc oxide is widely used in brick glazes and translucent glazes and stoneware. Transparent rough glaze for craft tableware. Especially in building ceramic wall and floor tiles glazes and low-temperature porcelain glazes are used in large amounts.
The role and use of zinc oxide in glaze: Zinc oxide has a strong fluxing effect in glaze, which can reduce the expansion coefficient of the glaze, improve the thermal stability of the product, and at the same time increase the gloss and whiteness of the glaze. degree and improve the elasticity of the glaze. It can increase the brilliance of glaze color while expanding the melting range. But in those containing chromium