金川铜合成炉处理复杂金精矿的工艺研究  

Process Study on Treating Complex Gold Concentrate in Jinchuan Copper Synthesis Furnace

作　　者：彭东清 曹涛 董旭 PENG Dong-qing;CAO Tao;DONG Xu(Jinchuan Group Copper Co.,Ltd.,Jinchang 737100,Gansu,China)

机构地区：[1]金川集团铜业有限公司,甘肃金昌737100

出　　处：《有色金属（冶炼部分）》2022年第3期56-59,共4页Nonferrous Metals（Extractive Metallurgy)

摘　　要：金川铜合成炉的铜精矿原料主要来自国外,矿源成分较复杂。铜冶炼行业的迅速扩能导致铜原料市场竞争形势日趋激烈、TC/RC(铜精矿加工费用)持续降低、原料采购难度增大、原料品质降低、企业利润降低。利用火法造锍捕金处理复杂金精矿成为铜合成炉降低成本、提高赢利点的一种新方式。根据金川铜合成炉处理复杂金精矿实际生产经验,从生产实践中存在的问题、提升装备结构、优化工艺过程等方面进行论述。采用单喷嘴结构优化、工艺参数优化措施后,料坝能够维持在850 mm,冻结层500~600 mm,烟灰率增加控制在7%以内,锅炉对流区温度受控,基本可以实现精矿在反应塔自热及完全反应,为闪速炉处理复杂金精矿提供指导。Copper concentrates raw materials of Jinchuan copper synthesis furnace(JCSF) mainly come from abroad, and the ore source composition is complex.The rapid expansion of copper smelting industry has led to increasingly fierce competition in copper raw material market, which results in continuous reduction of TC/RC(copper concentrate processing cost),difficulty in purchasing of raw material, and reduction of raw material quality and enterprise profits.It is a new way to reduce cost and improve profit point of JCSF through treat complex gold concentrates by pyrometallurgical matte-making to capture gold.Based on the actual production experience of JCSF in treating complex gold concentrate, the problems existing in production practice, improving equipment structure and optimizing process were comprehensively discussed.After optimization of single nozzle structure and process parameters, the material dam can be maintained at 850 mm, frozen layer is 500~600 mm, increase of smoke rate is controlled within 7%,temperature in convective zone of boiler is controlled, and the self heating and complete reaction of concentrates in the reaction tower can be basically realized, so as to provide guidance for treatment of complex gold concentrate by flash smelting furnace.

关 键 词：复杂金精矿 铜合成炉 工艺优化 生产实践 

分 类 号：TF831[冶金工程—有色金属冶金]