Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iiia metal or beryllium
Patent
1981-07-27
1984-01-31
Carter, Herbert T.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group iiia metal or beryllium
423135, 423136, 423155, 423202, 423482, C01F 722
Patent
active
044289120
ABSTRACT:
Alkali and alkaline earth metal chlorides contained in a residue of a chlorination process of a feed material of bauxite or clay associated with coal are removed by the addition of sulfuric acid which causes their conversion to their sulfate form, and the simultaneous production of hydrochloric acid. The residue, which has been rendered environmentally acceptable, can be disposed of readily, for example, to an ash pond or disposal area for flue gas desulfurization sludges. The hydrochloric acid is then recycled to the chlorination process. The hydrochloric acid may be utilized, for example, as a binder of the feed material, to prechloridize the feed material or as a portion of the leach solution when the chlorination process is a hydrochloric acid leach.
REFERENCES:
patent: 1581436 (1926-04-01), Galt
patent: 2040867 (1936-05-01), Mitchell et al.
patent: 3864458 (1975-02-01), Roberts
patent: 4120737 (1978-10-01), Berrie et al.
patent: 4237102 (1980-12-01), Cohen et al.
patent: 4239735 (1980-12-01), Eisele et al.
Reynolds James E.
Williams Alan R.
Carter Herbert T.
Public Service Company of New Mexico
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