Year1
- 含量：
- 99
- 外观：
- 白色
- 包装：
- 25公斤
At present, the production methods of zinc oxide in the world can be roughly divided into two categories: fire method and wet method. Fire methods are divided into two types: indirect methods and direct methods. The direct method, also known as the American method, uses ore as raw material to directly obtain zinc oxide products through high-temperature reduction and oxidation. Although this method can use ores as raw materials, its disadvantage is that it consumes a lot of energy and the product quality is unstable and the first-grade product rate is very low. The indirect method, also known as the French method, uses high-purity zinc ingots as raw materials to produce zinc oxide through high-temperature sublimation and oxidation. The advantage of this method is the high purity of the product. The disadvantage is that zinc ingots are expensive and consume a lot of energy
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