在烧结混料过程中喷吹轻烧白云石粉工艺试验  

Technological Test on Injection of Light-Burned Dolomite Powder During Material Mixing of Sintering Process

作　　者：刘成伟[1] 欧阳代刚 刘清才[1] 卫敏[1] 胡钢 陆震 

机构地区：[1]重庆大学材料科学与工程学院,重庆400030 [2]重庆市合川排水有限公司,重庆401521 [3]重庆钢铁股份有限公司烧结厂,重庆401258

出　　处：《钢铁》2011年第8期12-16,21,共6页Iron and Steel

基　　金：国家自然科学基金资助项目(50774107);重庆市科委自然科学基金计划(CSTC:2010BB0234)

摘　　要：研究了在烧结混料时运用喷吹轻烧白云石粉工艺,以及不同轻烧白云石粉添加量、水分添加量对烧结混料情况、混料机粘料率和烧结矿冷态强度的影响规律。在此基础上与传统熔剂的添加工艺进行了比较分析并进行了烧结杯试验研究。结果表明：采用喷吹方式加入轻烧白云石粉,与传统配入方式相比,烧结混料情况改善,混合料制粒效果和混匀情况变好,同时粘料率降低0.69%~0.97%,烧结矿的冷态强度略有升高,但变化不大。得出保证烧结矿最佳混料情况和冷态强度的轻烧白云石喷吹量为4.64%,最佳喷吹位置为一混时及w（H2O）=7.5%时。The effect of addition of light-burned dolomite and water addition amount in mixture of sintering on material sticking condition in sinter mixture and cold strength of sinter was investigated for the process of injection of light-burned dolomite in sintering.The comparative analysis between the new technology and traditional flux addition and sinter pot experiments were carried out.Comparing with traditional application,the results show that after injecting light-burned dolomite powder,the condition of material mixing of sintering is improved,and the pelleting results and uniform mixing of sintering effect become better,meanwhile the rate of material sticking is reduced 0.69%-0.97%,the cold strength of sinter is slightly increased but it changes very little.For the best cold strength,the injection amount is 4.64%.Furthermore,the best injecting position is the primary mixer when water content in mixture is about 7.5%.

关 键 词：喷吹 烧结 轻烧白云石 冷态强度 

分 类 号：TF046.4[冶金工程—冶金物理化学]