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METHOD FOR GOLD RECOVERY AND EXTRACTION FROM ELECTRONIC WASTE OR GOLD CONTAINING MINERALS, ORES AND SANDS
METHOD FOR GOLD RECOVERY AND EXTRACTION FROM ELECTRONIC WASTE OR GOLD CONTAINING MINERALS, ORES AND SANDS
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机译:从电子废物或含有矿物质,矿石和沙子的金的金回收和提取方法
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摘要
A method for recovery of gold from gold-containing materials, such as electronic waste material, minerals and sands is described. The method includes crushing the gold containing material to obtain a particulate material. The particulate material is then preheated in an oxygen-containing gas environment in a preheating zone. The method also includes mixing the oxidized particulate material with a chlorine-containing material and treating the mixture in a reaction zone. The treatment is carried out by heating the mixture to provide thermal decomposition of the chlorine-containing material and produce a chlorine-containing gas mixture, and by applying an electromagnetic field to the chlorine-containing gas mixture to provide ionization of chlorine. A volatile gold-containing chloride product, produced in the reaction zone as a result of a chemical reaction between gold and chlorine ions, is then cooled to convert the volatile gold-containing chloride product into solid phase gold-containing materials.
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