China Nonferrous Metallurgy

In this paper, based on the brief introduction of component differences between Sb concentrate and Sb-Au mineral, the detailed comparison is made for the technical parameters of the two minerals in the technological process of blast furnace smelting-reverberatory furnace refining. At first, the most difference between Sb concentrate and Sb-Au mineral is the different contents of As and Au, which will bring adverse effects on the pelletizing process; secondly, during the blast furnace smelting process of the two minerals, most Sb, Pb and As will enter antimony-oxygen powder, and most Au in the Sb-Au mineral will be enriched and enter the precious Sb; finally, the two kinds of concentrate are smelted to produce antimony-oxygen powder, which is subject to reductive smelting and oxidizing refining to produce qualified antimony ingot. However, the Au in the antimony-oxygen powder produced from Sb-Au mineral will continue to be enriched and enter the antimony ingot, which will increase the difficulty of post-processing. The technological processes of antimony pyrometallurgy for Sb concentrate and Sb-Au mineral are almost the same, the differences are that the output of arsenic-alkali slag is different and the Au distribution in various products is different, the precious antimony smelted from the Sb-Au mineral is an important raw material for gold extraction.