Apparatus for continuous refining of metals

Details Apparatus for continuous refining of metals Apparatus for continuous refining of metals

1975-07-24

1977-02-15

Envall, Jr., R. N.

13 31, F27B 1700, F27D 706

Patent

active

040083640

ABSTRACT:
Apparatus for the continuous refining of metals, such as, lead, tin, comprising a distillation column built up of identical boxes set up one upon another and forming evaporation stages along which the metal flows off sequentially in the form of a thin film. Extending through all the column boxes are preferably three graphite heater rods set up in a row, the heater being preferable connected in a three-phase electric circuit. The heating of the metal film is conducive to the distillation of impurity vapors, referred to as volatilized impurities, flowing to condensing shields.

REFERENCES:
patent: 1242337 (1917-10-01), Fulton
patent: 3803335 (1974-04-01), Esjutin et al.

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