Nickel recovery using a fluidized bed process

Details Nickel recovery using a fluidized bed process Nickel recovery using a fluidized bed process

1990-04-18

1992-09-15

Heller, Gregory A.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Iron group metal

423 74, 75628, 502 41, C22B 2300, B01J 3830

Patent

active

051476193

ABSTRACT:
A process for the recovery of nickel catalyst metal from a top portion of a fluidized bed consists essentially of the steps of providing a sludge material including spent catalyst including recoverable catalyst metal in the form of particles which are finely divided, and an organic material consisting essentially of fat, the organic material being combustible or otherwise degradable under conditions attainable by fluidized bed techniques; feeding the sludge material into a base portion of a fluidized bed including a bed of inert carrier material; converting the organic material to waste gases in the fluidized bed; maintaining the fluidized bed under conditions which cause the particles of recoverable catalyst metal to rise to a top portion of the fluidized bed, the recoverable catalyst metal comprising particles having an average particle size of less than 50 microns; removing the particles of recoverable catalyst metal and the waste gases from the top portion of the fluidized bed; and separating the particles of recoverable catalyst metal from the waste gases.

REFERENCES:
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Leva, Max Fluidization McGraw-Hill, 1959, pp. 3, 5, 8-13 and 114-120.
von Bogdandy, Ludwig and Engell, Hans-Jurgen, Die Reduktion der Eisenerze, 1967, pp. 200, 201, 227,228 and 238.
Othmer, Donald F, Fluidization, Reinhold Publishing Co., New York, 1956, pp. 20-22.
Hackh's Chemical Dictionary, 1974, 4th Edition, p. 261.

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