Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal
Patent
1983-08-19
1985-11-26
Doll, John
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group ib metal
423 27, 423 29, 75101R, 75105, 75118R, 266168, 266267, 406 25, 406120, 406124, 422110, 422112, 422219, 422233, 422281, 422293, 422295, B01D 1102, C01C 308, C22B 302, G05D 900
Patent
active
045553858
ABSTRACT:
An introduction process and apparatus is described concerning the continuous elution of a value, i.e. a metal value such as gold, from a particulate carrier by a counterflow of stripping liquid through the pressurized vessel in which the loaded particulate carrier is introduced to the vessel as a low velocity plug in a liquid carrier. The extraction process is also used with the continuous elution process in which the particulate material is extracted from the bottom part of a pressure vessel through a discharge pipe extending therefrom and in which a discharge liquid is introduced into the discharge pipe upstream of the discharge end under such pressure as to maintain a head of the discharge liquid upstream of that location and a flow of the liquid downstream from the location to transport the particulate material through the discharge pipe. The length of the pipe allows a pressure drop in the particulate material whereby it is discharged at ambient pressure without mechanical working of the material and the discharge liquid may also act to cool the material.
REFERENCES:
patent: 2813781 (1957-11-01), Mertes
patent: 3880598 (1975-04-01), van der Toorn et al.
patent: 3920403 (1975-11-01), Ross
patent: 3990857 (1976-11-01), Vandenhoek
patent: 4188208 (1980-02-01), Guay
Doll John
Ok Tedi Mining Limited
Russel Jeffrey E.
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