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基于SO3浓度控制的火法炼铜技术研究

  • 沈艳敏|刘文晔|郭春丽
  • 作者单位:
  • 杭州安全生产科学技术有限公司|杭州安全生产科学技术有限公司|杭州安全生产科学技术有限公司
  • 基金项目:

  • 国家自然科学基金项目(GDKJXM20210069)
  • 详细信息:

  • 作者简介:
  • 沈艳敏(1988—),女,工程师,研究方向为化学工程;E-mail:zifeng2030@163.com
  • 通讯作者:
  • isnull
  • PDF下载

Research on pyrometallurgical copper smelting technology based on SO3 concentration control

  • English Author:
  • Hangzhou Safe Production Science and Technology Co.,Ltd.|Hangzhou Safe Production Science and Technology Co.,Ltd.|Hangzhou Safe Production Science and Technology Co.,Ltd.
  • Unit:
  • 摘要
  • 在线预览
  • 参考文献

摘要:

针对火法炼铜过程中产生大量的SO3,对设备造成严重腐蚀,影响最终产品质量问题,提出一种利用耗氧剂闪锌矿和方铅矿进行SO3浓度控制的火法炼铜技术。在充分分析影响SO3生成温度和组分的基础上,通过向锅炉烟道喷吹耗氧剂闪锌矿和方铅矿降低氧气浓度,以达到控制烟气中SO3浓度的目的。试验结果显示,与原来0.5 % SO3浓度相比,加入耗氧剂闪锌矿与方铅矿后,试验中SO3浓度整体未超出0.01  %,铜品位为99.9 %~100.0 %,而未加任何耗氧剂所得铜品位为99.4 %~99.6 %。该方法对火法炼铜产品质量控制具有积极意义。

关键词:

铜冶炼;闪锌矿;方铅矿;火法炼铜;SO3;浓度控制

Abstract:

To address the issues of significant SO3 generation during pyrometallurgical copper smelting,which causes severe equipment corrosion and affects the quality of the final product,a method utilizing sphalerite and galena for SO3 concentration control in pyrometallurgical copper smelting is proposed.Based on a thorough analysis of the tempera-ture and components affecting SO3 formation,this method primarily involves spraying and blowing sphalerite and galena into the boiler flue to reduce oxygen concentration,thereby controlling SO3 levels in the flue gas.Experimental results indicate that,compared to the original SO3 concentration of 0.5 %,the addition of sphalerite and galena reduced the overall SO3 concentration to below 0.01 % in the tests.The copper grade ranged between 99.9 % and 100 %,whereas copper grades obtained without any oxygen-consuming agents ranged from 99.4 % to 99.6 %.Therefore,this  method has significant positive implications for controlling the quality of pyrometallurgical copper smelting products.

Keywords:

copper smelting;sphalerite;galena;pyrometallurgical copper smelting;SO3;concentration control