Method for the recovery of zinc

Details Method for the recovery of zinc Method for the recovery of zinc

1977-10-27

1981-09-29

Hearn, Brian E.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iib metal

423109, C01G 906, C22B 516

Patent

active

042922836

ABSTRACT:
A method for the recovery of zinc from zinc oxide ores and/or roasted zinc sulfide or concentrates, wherein the zinc ore source is leached under substantially neutral conditions to produce a residue having a relatively high content of undissolved zinc, the residue is dried, and then suspended in a hot gas stream preferably in a smelting cyclone under reducing conditions to thereby volatilize off zinc and other readily volatile metals as their oxides. The oxide mixture thus produced is recovered and then subjected to a neutral leaching which selectively removes zinc values as well as other metal values.

REFERENCES:
patent: 669750 (1901-03-01), Jones
patent: 1255440 (1918-02-01), Laist
patent: 1496004 (1924-06-01), Laist
patent: 1912590 (1933-06-01), Murray

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