首页> 外国专利> Method and apparatus for treatment of dust recovered from off gases in metallurgical processes

Method and apparatus for treatment of dust recovered from off gases in metallurgical processes

机译:在冶金过程中处理从废气中回收的粉尘的方法和设备

摘要

The method for treating the dust entails the following steps:P P(a) supplying a combination of dust, a reducing agent and flux to a gastight electrothermic smelting furnace,P P(b) smelting, reducing and volatilizing certain metals in the smelting furnace,PP(c) tapping of an inert slag phase and a liquid metal phase from the smelting furnace,PP(d) continuous removal from the smelting furnace of a gas phase containing chiefly CO- gas, metal fumes, sulphur, chlorides and fluorides together with entrained unreacted dust,PP(e) further treatment of the gas phase.PPThe process produces an inert slag phase which can be safely deposited in a landfill. The process also allows for recovery of valuable metal components from the dust.
机译:灰尘的处理方法包括以下步骤:(P)

(a)将粉尘,还原剂和助熔剂的混合物供应到气密电热熔炼炉中,

(b)进行熔融,还原使熔炉中的某些金属挥发,

(c)从熔炉中排出惰性炉渣相和液态金属相,

(d)从熔炉中连续除去主要包含CO气,金属烟气,硫,氯化物和氟化物以及夹带的未反应粉尘的气相,

(e)进一步处理气相。

渣相,可以安全地沉积在垃圾填埋场中。该过程还允许从灰尘中回收有价值的金属成分。

著录项

  • 公开/公告号US5004496A

    专利类型

  • 公开/公告日1991-04-02

    原文格式PDF

  • 申请/专利权人 ELKEM A/S;

    申请/专利号US19900555653

  • 发明设计人 JAN A. AUNE;THOR PEDERSEN;

    申请日1990-07-20

  • 分类号C22B7/02;F27D17/00;

  • 国家 US

  • 入库时间 2022-08-22 05:46:44

相似文献

  • 专利
  • 外文文献
  • 中文文献
获取专利

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号