Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iiia metal or beryllium
Patent
1977-06-08
1978-09-05
Carter, Herbert T.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group iiia metal or beryllium
423111, 423119, 423121, 423138, C01F 706
Patent
active
041120477
ABSTRACT:
A pretreatment system is provided for transforming the goethite constituent [FeO(OH)] of goethitic bauxites to hematite and/or magnetite at high temperatures and pressures. The system employs a number of float-type, liquid displacement pressure pumps, both for charging caustic-containing bauxite slurries of high solids concentration to the system and for discharging the treated slurries. The system operates at temperatures in excess of 250.degree. C and up to temperatures required for the total conversion of the goethite content to hematite or magnetite which, in turn, significantly increases the yield of recoverable alumina. Since the slurry to be pretreated is of high solids concentration, e.g., in excess of 30% by weight and up to about 55-60% by weight, the size of the pressure-resistant equipment is considerably smaller than the size required for conventional pretreatment system operating at much lower solids concentrations and due to the use of the float-type pumps, maintenance, erosion and other mechanical problems associated with the use of customarily employed high pressure pumps and slurry pressure control valves are substantially eliminated.
REFERENCES:
patent: 3095280 (1963-06-01), Soudan et al.
patent: 3306216 (1967-02-01), Warman
patent: 3413087 (1968-11-01), Roberts
patent: 3497317 (1970-02-01), Tusche
patent: 3582268 (1971-06-01), Sato et al.
patent: 3737514 (1973-06-01), King
patent: 3738411 (1973-06-01), Lazar
patent: 3944648 (1976-03-01), Solymar et al.
patent: 3966874 (1976-06-01), Featherson et al.
patent: 4026989 (1977-05-01), Orban et al.
Barlay Andrew E.
Calrow Paul E.
Carter Herbert T.
Kaiser Aluminum & Chemical Corporation
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