Metal distillation method utilizing double vaporization

Details Metal distillation method utilizing double vaporization Metal distillation method utilizing double vaporization

1985-07-26

1987-09-22

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 1033, 75 67A, C22B 2622

Patent

active

046953191

ABSTRACT:
A method for separating a certain metal from a raw material including a mixture of the metal and an element which has a lower vapor pressure than the metal. The raw material including the mixture of the metal and the element is heated so as to cause a first vapor including the metal to be evolved. This first vapor is passed through a throttling means in which it undergoes adiabatic expansion and is rapidly cooled so that at least part of it is reduced to a liquid containing the metal. This liquid is reheated so as to cause a second vapor including the metal to be evolved. And the second vapor is cooled to collect the metal. An apparatus is also disclosed for performing this method.

REFERENCES:
patent: 4488904 (1984-12-01), Miura et al.

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