锑精矿与锑金矿火法炼锑的技术对比

Comparison of antimony pyrometallurgy technologies for Sb concentrate and Sb-Au mineral

本文在简要介绍锑精矿与锑金矿成分差别的基础上,详细对比了2种矿物在鼓风炉熔炼-反射炉精炼工艺处理过程的技术参数。首先,锑精矿和锑金矿因砷含量和金含量的不同,给制粒过程带来不利影响;其次,2种矿物在鼓风炉熔炼过程中,大部分锑、铅和砷会进入锑氧粉,锑金矿中的金大部分会富集进入贵锑;最后,2种精矿熔炼产出的锑氧粉经过还原熔炼和氧化精炼可以产出合格锑锭,但是锑金矿锑氧粉中的金会继续富集进入锑锭,增加了后处理的难度。锑精矿与锑金矿火法炼锑工艺过程基本相同,不同点在于砷碱渣产量不同和各个产物中金分配不同,锑金矿熔炼出的贵锑是提取金的重要原料。

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.