烧结熔剂的同化行为试验
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摘要
为了更好地利用各种烧结熔剂,使用"座滴法"研究了6种烧结熔剂的同化行为。结果表明,活性度高的生石灰比活性度低的生石灰同化行为好;活性度相同的生石灰MgO质量分数低的同化行为好;石灰石与Fe_2O_3纯试剂反应的同化行为较好,这主要是由于高温下生成了高活性的CaO;白云石的同化行为较差,这主要是由于白云石中的MgO形成了MgO·Fe_2O_3高熔点物质。6种烧结熔剂的同化行为中生石灰A的同化行为好于生石灰B,生石灰B、石灰石A和石灰石B的同化行为非常接近,生石灰B的同化行为好于生石灰C,白云石的同化行为最差。
In order to make better use of all kinds of sinter fluxes,the assimilation behavior of six sinter fluxes was studied by the seat drop method.The results displayed that the assimilation behavior of the high activity quicklime was better than the low activity quicklime.The assimilation behavior of the low MgO quicklime is better.The assimilation behavior of limestone is better,which is mainly due to the formation of highly active CaO at high temperature.The assimilation behavior of dolomite is poor,which is mainly due to the formation of MgO·Fe_2O_3.The assimilation behavior of quicklime A is better than that of quicklime B,the assimilation behavior of quicklime B,limestone A and limestone B is very close.The assimilation behavior of quicklime B is better than that of quicklime C,the assimilation behavior of dolomite is the worst.
In order to make better use of all kinds of sinter fluxes,the assimilation behavior of six sinter fluxes was studied by the seat drop method.The results displayed that the assimilation behavior of the high activity quicklime was better than the low activity quicklime.The assimilation behavior of the low MgO quicklime is better.The assimilation behavior of limestone is better,which is mainly due to the formation of highly active CaO at high temperature.The assimilation behavior of dolomite is poor,which is mainly due to the formation of MgO·Fe_2O_3.The assimilation behavior of quicklime A is better than that of quicklime B,the assimilation behavior of quicklime B,limestone A and limestone B is very close.The assimilation behavior of quicklime B is better than that of quicklime C,the assimilation behavior of dolomite is the worst.
引文
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[2]张建良,李净,蒋海冰,等.进一步降低烧结工艺成本的优化配矿试验[J].钢铁,2013,48(3):9.
[3]邵俊,孟君,桑蓉栎,等.论节能降耗型烧结工序的设计要点及发展趋势[J].中国冶金,2015,25(2):58.
[4]吴胜利,刘宇,杜建新,等.铁矿石的烧结基础特性之新概念[J].北京科技大学学报,2002,24(3):254.
[5]李超,钱菁,杨瑞霞.酸碱滴定法测定石灰中活性度影响因素的探讨[J].冶金分析,2006,26(6):1.
[6]左海滨,徐承飞,张建良,等.烧结熔剂的活性度和显微结构研究[J].武汉科技大学学报,2013,36(4):246.
[7]吴胜利,贝纪承,朱娟,等.化学成分对铁酸盐烧结液相流动性的影响[J].钢铁研究学报,2015,27(9):7.
[8]Kasai E,Sakano Y,Kawaguchi T,et al.Influence of properties of fluxing materials on the flow of melt formed in the sintering process[J].ISIJ International,2000,40(9):857.
[9]祁成林,张建良,陈永星,等.烧结熔剂高温特性的实验研究[J].过程工程学报,2009(增刊1):266.
[10]李光森,金明芳,姜鑫,等.烧结矿粘结相的熔化特性[J].东北大学学报:自然科学版,2008,29(5):697.
[11]江吉惠,洪灶熬.煤灰熔融性国家标准测定方法的探讨[J].烧结球团,2005,30(5):14.
[12]陈先勇,周贵云.小颗粒石灰石煅烧制备高活性度石灰的研究[J].化工矿物与加工,2004,33(2):15.
[13]冯佳,胡龙飞,朱少楠,等.不同条件下石灰石煅烧的产物特性研究[J].炼钢,2015,31(6):73.
[14]汪筱渊,薛正良,李建立.不同性质石灰石高温煅烧后的石灰活性度研究[J].炼钢,2016,32(3):73.