Method for processing wastes resulting from production of...

Details Method for processing wastes resulting from production of... Method for processing wastes resulting from production of...

C - Chemistry, Metallurgy

01

D

23/1, 23/324, 23

C01D 3/02 (2006.01) B01D 53/34 (2006.01) C01G 3/00 (2006.01) C02F 1/52 (2006.01) C02F 1/58 (2006.01) C02F 11/18 (2006.01) C05B 17/00 (2006.01) C22C 9/00 (2006.01) C22C 21/04 (2006.01)

Patent

CA 1132335

ABSTRACT OF THE DISCLOSURE The method comprises processing of the slime and off-gases resulting from the production of phosphorus by an aqueous solution of copper sulphate preferably at a concentra- tion of from 15 to 50% by weight. The process is preferably conducted at a temperature within the range of from 20 to 80°C to give two products, i.e. solid and liquid ones. The solid product containing mainly copper phosphide as well as fluorides, chlorides of alkali metals and silicon, calcium and aluminium silicates is used as a modifying and refining agent for hypereutectic silumines as well as for the production of a copper-phosphorus alloy. The liquid product containing phosphoric acid, sulphuric acid, and copper sulphate serves as the starting material for the manufacture of a copper-containing fertilizer therefrom. The method according to the present invention makes it possible to improve the production of phosphorus so as to eliminate the formation of secondary wastes and thereby contribute to a better control of the environment protection.

301553

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