Patent ID: 8911794
Filing Date: 2014-12-16
Classification: A01N,C01G

Abstract:
1. A hydroxosulfate mixture of both brochantite (Cu 4 (OH) 6 SO 4 ) and antlerite (Cu 3 (OH) 4 SO 4 ), wherein the copper content of the mixture attributable to brochantite and antlerite is between 30% and 45% by weight of the mixture, wherein the mixture is made by a process which comprises reacting an aqueous solution of copper sulphate (CuSO 4 ) with an aqueous suspension of solid particles of copper oxide in a total SO 4 /Cu molar ratio ranging from 0.25 to 0.40, the aqueous solution of CuSO 4 having a concentration by weight of copper of between 6% and 10% and the aqueous suspension of solid particles of copper oxide having a concentration of copper oxide between 15% and 50% by weight wherein the mean diameter of the solid particles of copper oxide in the suspension is less than 25 μm, and wherein the reaction is carried out at a controlled temperature between 40° C. and 100° C.