1. The tin slag grinding thoroughly and then dissolved in a mixture of formic acid hydrogen fluoride acid sulfonate as more with an ฟิวริ
2. Then add methyl isobutyl ketone into compounds of La and niobium instead of column to dissolve in layer of methyl isobutyl ketone.
3.Then the separation of methyl isobutyl ketone out
4. Then add sulfuric acid dilution in niobium to dissolve in a layer of acid
5. When the separation of the acid solution as medium and do with solvent, ammonia will precipitate.
6.When it burned to niobium penta oxide occurs
7. The tantalum dissolve in the layer of methyl isobutyl ketone. Separated by passing steam through to tantalum dissolve in layers of water in the form of a compound H2TaF7
8.When adding potassium chloride solution used for crystallization to substance. K2TaF7 which application you
.* * * ore extraction instead apply slide Columbia carbide. The release of water into the environment therefore must get rid of additives. And adjust water to neutral, also tin slags may have radioactive uranium and thorium, such as aluminum were mixed in.
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