Metallurgical apparatus – Means for melting or vaporizing metal or treating liquefied... – Continuous refining
Patent
1976-08-18
1977-08-16
Dost, Gerald A.
Metallurgical apparatus
Means for melting or vaporizing metal or treating liquefied...
Continuous refining
75 78, 266216, 266227, 266235, C22B 1306
Patent
active
040422283
ABSTRACT:
Apparatus for debismuthising lead containing one or more alkaline earth metals or alloys thereof, including a separation vessel having independently temperature-controlled upper liquation and lower separation zones, devices for adding a reagent selected from the group consisting of antimony, arsenic and alloys containing antimony and/or arsenic to the input lead to form a crust/bullion mixture and continuously and directly introducing the crust/bullion mixture into the lower separation zone of the vessel at a point below the upper liquation zone, the crust particles being separated from the bullion in the lower separation zone and moving upwardly in the vessel, the entrained lead being separated from the crust particles in the upper liquation zone and moving downwardly in the vessel, the enriched crusts being removed from the upper surface of the material in the vessel, and the debismuthised product lead being withdrawn from near the lower end of the lower separation zone. The input lead and the reagent may be mixed in a mixing chamber in the separation vessel or in one or more separate mixing pots.
REFERENCES:
patent: 1687187 (1928-10-01), Williams
patent: 1774688 (1930-09-01), Williams
patent: 1856678 (1932-05-01), Williams
Iley James Dixon
Ward Denby Harcourt
Dost Gerald A.
The Broken Hill Associated Smelters Proprietary Limited
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