粗砷烟尘是黄金焙烧冶炼工艺处理复杂含砷金精矿的必然产物，如何实现粗砷烟尘的安全、环保、资源化有效处置，已成为黄金及有色金属冶炼行业亟待攻克的技术难题。某黄金冶炼企业生产过程中产出的粗砷烟尘中三氧化二砷、金、银质量分数分别为86.50 %、1.1 g/t和11 g/t，采用密闭流态化输送、多段可控蒸馏提纯、三氧化二砷蒸气缓冷结晶、含金脱砷渣综合利用、脱砷尾气循环利用技术进行处理，并实现工业化应用。该技术产出质量分数为99.51 %的三氧化二砷一级产品，砷回收率达到99.10 %，金、银回收率分别达到81.17 %、79.94 %。“粗砷烟尘提纯生产三氧化二砷关键技术集成”工业化应用项目，成功地将粗砷烟尘危废转化为二次高价值资源，突破了粗砷烟尘提纯生产高纯三氧化二砷的国内外技术瓶颈，实现了粗砷烟尘资源综合回收、循环利用、清洁生产，环保效益、经济效益、社会效益显著，具有广泛的推广应用价值。

The coarse arsenic fume is an inevitable product of the gold roasting and smelting process in the treatment of complex arsenic-containing gold concentrate.The way it is effectively disposed of safely,environmentally friendly,and recovered as resources,has become a technical problem for the gold and non-ferrous metal smelting industry.In the production process of a gold smelting company,the mass fractions of arsenic trioxide,gold,and silver in the coarse arsenic fume are 86.50 %,1.1 g/t,and 11 g/t,respectively.The coarse arsenic fume is treated using closed fluidization transportation of coarse arsenic fume,multi-stage gradient temperature-controlled distillation,multi-stage slow-cooling crystallization of arsenic,leaching of gold and silver from arsenic-removal slag and recycling of arsenic-removal tail gas.This technology has been successfully applied on an industrial scale.The primary product obtained has an arsenic trioxide mass fraction of 99.51 %,and the arsenic recovery rate reaches 99.10 %.The gold and silver recovery rates are 81.17 % and 79.94 % respectively.The industrial application of the purification and production of arsenic trioxide from coarse arsenic fume successfully transforms coarse arsenic fume hazardous waste into a secondary high-value resource,overcoming the technical bottlenecks of producing high-purity arsenic trioxide from coarse arsenic fume both domestically and internationally.The comprehensive recovery,recycling,and clean production of coarse arsenic fume resources have significant environmental,economic,and social benefits,demonstrating wide-ranging value for promotion and application.