从锑精矿制备焦锑酸钠的工业试验

介绍了用空气氧化法制备焦锑酸钠的工业试验情况。以单一的辉锑矿精矿和铅锑精矿为原料，通过硫化钠浸出锑精矿使锑形成硫代亚锑酸钠进入溶液，往溶液中鼓入空气，使锑生成焦锑酸钠产品。氧化后液的主要成分为硫代硫酸钠，通过中和、浓缩和结晶，可以副产出硫代硫酸钠。该方法生产焦锑酸钠，处理的原料来源广，综合利用程度高，尤其是可以处理用火法冶炼不好处理的脆硫铅锑精矿，是我国复杂锑矿资源提高综合经济效益的一条较佳的途径。

TRIAL PRODUCTION OF SODIUM PYROANTIMONATE FROM ANTIMONY CONCENTRATE

The results that sodium pyroantimonate was prepared by air oxidation was introduced in this paper. With unity stibnite concentrate and lead-antimony concentrate act as the raw material, sodium sulfide was used to leach antimony concentrate to form sodium thioantimonite solution, sodium pyroantimonate was precipitated by blasting air into the solution. The main component of oxidation raffinate was sodium thiosulfite. By neutralizating, evaporating and crystallizing by-product sodium thiosulfate could be prepared from the raffinate. Different antimony concentrates could be used to prepare sodium pyroantimonate by air oxidation, especially for treating complex antimony concentrate which was not easily smelt in pyrometallurgical process. Air oxidation was good way to benefit from complex antimony resource.