Study on Active Lime Carbonation

摘要：

　　In order to prevent active lime from absorbing water from the air,laboratory experiments of surface passivation of active lime have been carried out in conditions of different temperatures(700℃,600℃,500℃,400℃ and 300℃)and CO2 pressure((PCO =1atm,PCO =0.5atm and PCO =0.3atm).After carbonation,properties of active lime had been test.It can be concluded from the experiments result that active lime carbonation reaction goes fast when reaction temperature is above 500℃.The result also reveals that active limes anti-pressing increase a lot(from 10.2kg to 22.2kg)in condition of passivation degree reaching 8%by weight.It also shows out that active lime without carbonation absorbs water from the air more easily compared with the active lime after carbonation.When D reaches 8%,active limes absorbing water can be greatly slowed down.Meanwhile,its activity is lowered by 15%from 386ml to 327ml,which still satisfies the national technical requirements for active lime.This study result has practical sense for the active lime producers which have a long way to transport their lime to steelmaking plants.

关键词： active lime carbonation passivation anti-moisture

作者: Tongyou CAO

作者单位: Research and Development Center of WISCO,Wuhan 430080,China

会议类型: 国际会议

会议名称: the 6th International Congress on the Science and Technology of Steelmaking,ICS2015(第六届国际炼钢科技大会)

会议地点: 北京

会议语种:英文

页码: 225-227

在线出版日期: 2015-05-12（万方平台首次上网日期，不代表论文的发表时间）