Bauxite digestion by caustic alkali with improved heat transfer

Details Bauxite digestion by caustic alkali with improved heat transfer Bauxite digestion by caustic alkali with improved heat transfer

1976-12-27

1979-03-20

Myhre, Charles J.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

165 1, 165DIG5, C01F 706

Patent

active

041453980

ABSTRACT:
A first substance and a liquid are conveyed along a conduit at least part of which is arranged in heat-exchange relationship with a second substance. Upstream of this part of the conduit, a suspension of the first substance in the liquid is formed wherein the first substance has an average particle size between 10 and 150 microns and a concentration between 1 and 6 volume percent. The suspension is conveyed along the conduit under conditions of turbulent flow. In this manner, the efficiency of the heat-exchange between the suspension and the second substance is increased. The method may be used to increase the heat-exchange efficiency in the extraction of bauxite so that an apparatus of given size can extract greater quantities of bauxite or, conversely, so that a given quantity of bauxite can be extracted with an apparatus of smaller size.

REFERENCES:
patent: 2992893 (1961-07-01), Soudan et al.
patent: 3579294 (1971-05-01), Tamise et al.
patent: 3723073 (1973-03-01), Conti

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