Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iiia metal or beryllium
Patent
1975-12-29
1977-08-02
Vertiz, O. R.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group iiia metal or beryllium
23295R, 23301R, 23305A, 423111, 423132, 423556, C01F 774, B01D 902
Patent
active
040396150
ABSTRACT:
Hexagonal plate crystals of aluminum sulfate are produced in chemically pure form by a process which comprises cooling a heated saturated solution of chemically impure aluminum sulfate acidified with sulfuric acid to precipitate crystals of aluminum sulfate, heating the slurry of the cooled solution containing the precipitated aluminum sulfate crystals to a predetermined temperature wherein the temperature is maintained for a time sufficient to dissolve a portion of the crystals in the solution, cooling the heated slurry to precipitate aluminum sulfate crystals, and separating the precipitated crystals from the slurry.
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patent: 2958580 (1960-11-01), Loevenstein
patent: 3141743 (1964-06-01), Marsh
patent: 3143392 (1964-08-01), Saeman
patent: 3397951 (1968-08-01), Jamey et al.
Skoog & West, Fundamentals of Analytical Chemistry, Holt, Rinehart & Winston, N.Y., N.Y. 1963 pp. 175-187.
Kirk-Othmer, Encyclopedia of Chemical Technology, 2nd edition, John Wiley & Sons, Inc., N.Y., N.Y., 1963, pp. 59-63.
Mikami Yasuie
Morimoto Yasuo
Soma Kazuo
Takei Ippo
Nittetsu Mining Company, Limited
Straub Gary P.
Vertiz O. R.
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