NON-TRADITIONAL METHODS OF HEAVY METALS PRECIPITATION FROM SOLUTION IN THE FORM OF SULFIDE

摘要

In hydrometallurgical technological flowsheets several methods of target components removal from solution are used. One of these methods is non-ferrous metals removal in the form of rich selective or collective concentrates. In the present work pyrometallugical mattes, thiosulphate containing solutions and pulps, iron powder with elemental sulphur and calcium sulphate were used as the precipitator. It was shown that depending on precipitator compound and process parameters non-ferrous metals precipitate from solution in the different forms with varying content of components including Ni_3S_2, NiS, Ni_3S_4, NiS_2, (Ni,Co)S_2, CuS; Cu_(1,765)S; Cu_(1,97)S.