explain ZONE REFINING PROCESS
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Principle - The impurities in the molten state are more soluble than in the solid state of the metal . ... As the heater moves forward ,pure metal crystallizes out of the melt and the impurities pass on into the adjacent molten zone. The process is repeated several times and heater is moved in the same direction.
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Definition of zone refining. : a technique for the purification of a crystalline material and especially a metal in which a molten region travels through the material to be refined, picks up impurities at its advancing edge, and then allows the purified part to recrystallize at its opposite edge
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