How can lead and bismuth be purified?
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Liquation Method
Explanation:
It is a metallurgical technique for isolating metals from a mineral or composite. The material must be warmed until one of the metals begins to dissolve and drain away out of the other and can be then collected. This strategy was to a great extent used to expel lead-containing silver from copper, yet it can likewise be utilized to expel bismuth and antimony minerals from metal and refine tin. It is also used to purify the crude bismuth.
Pure lead melts at 327 degree Celsius and bismuth will melt at 271 degrees. Crude metal will add and after passing from hearth and pure metal will be collected at last. The impure metal will be separated as residue.
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