Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Alkali metal
Patent
1980-04-23
1981-08-25
Straub, Gary P.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Alkali metal
23302T, 299 5, 423421, C22B 2610, C01D 700, F21B 4328
Patent
active
042859158
ABSTRACT:
Alkali values are recovered in a cyclic method from mechanically mined trona ore or from trona deposits by a solution mining technique utilizing a solvent comprising an aqueous solution of sodium sulfide. The ore is solubilized as sodium carbonate which is precipitated as sodium sesquicarbonate and/or sodium bicarbonate by treating the solution with hydrogen sulfide and the precipitated salt separated from the mother liquor. In the process, sodium sulfide and hydrogen sulfide become converted into sodium hydrosulfide which is contained in the mother liquor. Heat treatment of the mother liquor converts the sodium hydrosulfide into sodium sulfide thereby regenerating a solution of sodium sulfide which is recycled to the trona ore and into hydrogen sulfide which is evolved and recycled to the sodium carbonate solution.
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Cohen Bernard
Saldick Jerome
Ianno Frank
Intermountain Research and Development Corp.
Mueller George F.
Straub Gary P.
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