铁水包顶底喷粉脱硫对比试验研究  

Comparative Study of Desulphurization with Powder Injected into Hot Iron Through Lance and Slot Porous Plug

作　　者：周建安[1] 孙中强[2] 战东平[1] 刘春明[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819 [2]东北大学冶金技术研究所有限公司,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2012年第1期90-93,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(50804009);国家高技术研究发展计划项目(2009AA03Z530)

摘　　要：通过狭缝式喷粉透气砖底喷吹和常规喷枪顶喷吹两种方式,将电石基粉喷入20 t铁水包中对含镍铁水进行脱硫对比试验.结果表明：在每吨铁脱硫粉剂消耗量为4 kg铁条件下,底喷粉工艺脱硫率为81%~90%,铁水温降为23~36℃;顶喷粉工艺脱硫率为59%~73%,铁水温降为45~70℃.顶、底喷粉处理时间无明显区别,底喷粉处理总时间始终比顶喷粉处理时间短约5 min.底喷吹脱硫工艺具有脱硫效率高、铁水温降小、处理周期短等优点.A comparative experimental study on injecting powder through slot porous plug fixed desulphurization of hot iron with nickel by at the bottom of ladle and a usual overhead injecting technology was carried out in an industrial 20 tones ladle. The results showed that when the consumption of calcium carbide powder is 4 kg/t, the desulphurization ratio of the bottom powder injection is 81% --90%, and the heat loss is 23--36 ~C; the desulphurization ratio of overhead powder injection is 59 % --73 % and the heat loss is 45--70 ~C. Although the difference of injecting time between them can be neglected, the total processing time of bottom injection technology is 5 min shorter than that of top injection technology. Therefore, compared with the other desulphurization technologies, the technology of injecting powder with the bottom position has a number of advantages, such as, the higher desulphurization efficiency, the less heat loss and the short recycle time.

关 键 词：脱硫 狭缝式喷粉透气砖 底喷粉 铁水预处理 顶喷粉 

分 类 号：TB35[一般工业技术—材料科学与工程]