首页> 外国专利> PROCESS FOR LOWERING CARBON ANODES CONSUMPTION IN THE PROCESS OF ALUMINIUM PRODUCTION BY ELECTROLYSIS OF ALUMINA SOLUBILIZED IN CRYOLITE MELT

PROCESS FOR LOWERING CARBON ANODES CONSUMPTION IN THE PROCESS OF ALUMINIUM PRODUCTION BY ELECTROLYSIS OF ALUMINA SOLUBILIZED IN CRYOLITE MELT

机译:溶解在冰晶石熔体中的氧化铝电解生产铝过程中的碳阳极耗散过程

摘要

The invention relates to a process lowering the carbon anode consumption in the process for producing aluminium, by the alumina electrolysis in cryolite melt, using the blowing of a carbon oxide reducing gas into the melt, which accelerates the oxygen release from the active surface of the anodes, better homogenizes the melt and reduces the corroding of all components immersed or non-immersed in the electrolysis bath. The process claimed by the invention consists in passing the alumina from the alumina bin (1) through a dry purification system (6) towards the gas treating station (5), wherefrom the alumina is taken over , dosed by means of some pneumatic feeding devices and introduced into the electrolysis cell where it is melted by means of the carbon anodes (2) provided with some longitudinal channels through which a reducing gas with the concentration of 70...100% CO, and the flow rate of 1.00...1.50 Nm/ produced metal aluminium ton and a pressure of 1.1...1.2 barr is blown into the melt, the electrolysis cell is supplied with electric energy produced by a rectifier power station (4) and the gases discharged from the electrolysis cell are sucked from the gas treating station (5) with a compressor (8) and passed through a global purification system (7) wherefrom they are sent to a gas separator (9), where there takes place the separation of CO from CO, CO being subsequently reheated in a heat exchanger (10) and reintroduced into the process and COis sent into the burnt gases collector (11).
机译:本发明涉及一种通过在冰晶石熔体中进行氧化铝电解,使用氧化碳还原气体吹入熔体中来降低铝阳极生产过程中碳阳极消耗的方法,该方法可将氧还原性气体吹入熔体中,从而加速氧气从活性表面的释放。阳极,可以更好地使熔体均匀化,并减少所有浸入或未浸入电解槽中的成分的腐蚀。本发明所要求保护的方法包括使氧化铝从氧化铝仓(1)通过干法提纯系统(6)流向气体处理站(5),在该处处理氧化铝,并通过一些气动进料装置进行配料。然后引入电解槽,在电解槽中通过带有一些纵向通道的碳阳极(2)进行熔化,通过该通道,浓度为70 ... 100%CO的还原气体和1.00 ...向熔体中吹入1.50 Nm /生成的金属铝吨和1.1 ... 1.2 barr的压力,向电解池供应由整流器发电站(4)产生的电能,并吸入从电解池排出的气体气体从带有压缩机(8)的气体处理站(5)并经过整体净化系统(7),然后从那里被送至气体分离器(9),在那里从一氧化碳中分离出一氧化碳,随后将一氧化碳在热交换机中重新加热愤怒(10)并重新引入过程中,COis被送入已燃烧的气体收集器(11)。

著录项

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