Foaming Behavior in Molten Slag Caused by Decomposition of Carbonate Minerals  

作　　者：牛强 储少军 吴铿 王颖 

机构地区：[1]Institute of Chemical Metallurgy, Chinese Academy of Sciences, [2]Metall. Eng. School, Univ. Sci. Technol. Beijing,

出　　处：《过程工程学报》2001年第3期262-267,共6页The Chinese Journal of Process Engineering

基　　金：Supported by the National Natural Science Foundation of China (No. 59574026);Postd℃toral Science Foundation of China

摘　　要：The average foam life is proposed as an index to the foaming behavior in molten slag. The molten slag system of Na2B4O7-CaO-MgO is foamed by the gas from the thermal decomposition of carbonate minerals as the foamer. The experimental results show that foamer type and particle size have influence upon the average foam life of slag. The concentration of CaO and MgO in molten slag not only varies the physical properties of melt but also influences directly the decomposition rate of carbonate and the bubble size of gas, thus playing an important role in foaming and to foam stability of slag.The average foam life is proposed as an index to the foaming behavior in molten slag. The molten slag system of Na_2B_4O_7-CaO-MgO is foamed by the gas from the thermal decomposition of carbonate minerals as the foamer. The experimental results show that foamer type and particle size have influence upon the average foam life of slag. The concentration of CaO and MgO in molten slag not only varies the physical properties of melt but also influences directly the decomposition rate of carbonate and the bubble size of gas, thus playing an important role in foaming and to foam stability of slag.

关 键 词：冶金熔渣 泡沫渣 泡沫寿命 特性 热解 碳酸盐 

分 类 号：TF534[冶金工程—钢铁冶金]