Question

Write the principles involved in the following metallurgical processes.
(1) Leaching (2) Vapour phase refining.

Answer 1

Answer:

1.)Leaching is the process of extracting minerals from a solid by dissolving them in a liquid(not always a solvent). The soluble particles dissolve in to the liquid leaving back insoluble particles which may be seperated comfortably. Then the particles dissolved in the liquid areextracted using suitable methods. This is the basic principle of leaching.

2.)Vapour Phase Refining is based on the principle that the impure metal is converted into a volatile compound and which can be collected elsewhere. It is then decomposed used to give back the pure metal.

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