Method for recovering potassium hydroxide and zinc oxide from po

Details Method for recovering potassium hydroxide and zinc oxide from po Method for recovering potassium hydroxide and zinc oxide from po

1976-02-23

1977-01-25

Vertiz, Oscar R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iib metal

423183, 429206, 423186, C01G 902, C01D 132

Patent

active

040050610

ABSTRACT:
Method for recovering potassium hydroxide and zinc oxide from potassium zincate solutions, characterized in that a selective solvent of potassium hydroxide, which is miscible with water, is added to the zincate solution, in that the zinc oxide precipitate thus obtained is filtered and in that the mother liquors for separating the potassium hydroxide solution from the solvent are treated. The invention applies to all electrochemical storage cell batteries having a zinc negative electrode in which it is required to purify the electrolyte with a view to scavenging it.

REFERENCES:
patent: 1719056 (1929-07-01), Horsch
patent: 1783086 (1930-11-01), Haner
patent: 2446868 (1948-08-01), Cunningham
patent: 3424562 (1969-01-01), Gaska
Mellor, Inorganic and Theoretical Chemistry, Longmans Green & Co., vol. II (1922) pp. 757, 758, vol. IV (1929) pp. 528, 529.

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