Studies of smelting products of high-sulfur low copper concentrates

High-sulfur and relatively copper-poor Boshchekul Concentrate (BC) were smelted together with copper concentrates of Zhezkazgan (ZhBP) in Aktogay (AC) Beneficiation plants. The experimental melts were carried out with a mixture of concentrates of copper-containing materials - converter slag (CS) of Zhezkazgan Copper Plant (ZhCP) and concentrate obtained by flotation of converter slag (CSC) of the Balkhash Copper Plant (BCP). At the same time, it was experimentally established that it is possible to obtain mattes containing 50.06 to 52.14 % copper and suitable for their conversion under the conditions of ZhCP. Thus, an X-ray phase analysis of a sample of low-iron and high-calcium slag showed that its main part is an amorphous phase, represented by a glass type on the polished sections of the sample in reflected light, small (0.01 to 0.015 mm) and several larger grains (up to 0.1 mm) in matte composition were found. Thermal analysis of all investigated slag found that the smelting point of the slags takes place in the range of 992.9 to 1,120.4 °C. © 2020 GDMB Gesellschaft fur Bergbau, Metallurgie, Rohstoff- und Umwelttechnik e.V.. All rights reserved.