explain about zone refining
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Posted by Veda Ravela 5 years, 6 months ago
- 2 answers
Yogita Ingle 5 years, 6 months ago
It is used for refining Si,B,Ga,In etc. Impurities are more soluble in the molten state of metal than in solid state. There is a circular mobile heater at one end of a rod of impure metal. Heater and the molten zone moves from one end to another end. Pure metal crystallizes out of the melt and the impurities pass onto the adjacent molten zone. Repetition of this process several times segregates impurities at one end of a rod. The end with impurities can then be cut off.
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Khushi....? ??? 5 years, 6 months ago
1Thank You