Chemically removing iron from grits

Details Chemically removing iron from grits Chemically removing iron from grits

1977-02-07

1978-10-03

Arnold, Donald J.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Iron group metal

51293, 51309R, 423150, C01G 4902, C01G 5310

Patent

active

041184599

ABSTRACT:
Iron is removed from grits, e.g. crushed corundum by contacting the grits with aqueous hydrochloric acid for dissolving of the iron and provision of a suspension of the grits in the acedic aqueous medium; water is added to the suspension and it is then centrifuged; water is added to the grit-rich fraction and the resulting suspension is subjected to a second centrifuging step.

REFERENCES:
patent: 2359401 (1944-10-01), Wulff
patent: 2368282 (1945-01-01), Wulff
patent: 3216792 (1965-11-01), Udy
patent: 3224874 (1965-12-01), Daugherty
patent: 3273997 (1966-09-01), Wilson
patent: 3497459 (1970-02-01), Nakamura et al.
patent: 3781405 (1973-12-01), Allan et al.
Practical Aspects of Design of Industrial Appl. of Hydrocyclone Part 1, Filtration and Separation Jul./Aug. 1969, pp. 361-367, Part II, Filtration and Separation Nov./Dec. 1969, pp. 651-657, Trawinski.
Trawinski, Chemie-Anglgen-Verfahren, Issues 4 and 5, 1970, pp. 84-86, 93, 94.

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