Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group vib metal
Patent
1978-12-15
1979-09-11
Carter, Herbert T.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group vib metal
423 61, 75101R, 75103, C01G 4100
Patent
active
041675550
ABSTRACT:
Tungsten is extracted from hot springs tungsten ores by means of a process comprising (1) calcining the ore, (2) quenching the calcined ore in aqueous alkaline solution and (3) treating the resulting slurry at elevated temperature and pressure to extract the tungsten values from the ore.
REFERENCES:
patent: 1431559 (1922-10-01), Becket
patent: 2351678 (1944-06-01), Hall
patent: 3800025 (1974-03-01), Fox
Gomes John M.
O'Keefe Daniel A.
Raddatz Andrea E.
Brown William S.
Carter Herbert T.
Gardiner Donald A.
The United States of America as represented by the Secretary of
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