D. Fornasiero et al., Separation of enargite and tennantite from non-arsenic copper sulfide minerals by selective oxidation or dissolution, INT J MINER, 61(2), 2001, pp. 109-119
Selective oxidation of minerals was investigated as a means to separate by
flotation the copper sulfide minerals of chalcocite, covellite and chalcopy
rite from the arsenic copper sulfide minerals of enargite and tennantite in
mixed mineral systems. It was found that a separation of these minerals co
uld be feasible after selective oxidation of their surfaces in slightly aci
dic pH conditions, or after oxidation and selective dissolution of the surf
ace oxidation products with a complexant in basic pH conditions. (C) 2001 E
lsevier Science B.V. All rights reserved.