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›› 2001, Vol. 1 ›› Issue (3): 0-0.

• 3 •    

Foaming Behavior in Molten Slag Caused by Decomposition of Carbonate Minerals

NIU Qiang, CHU Shao-jun, WU Keng, WANG Ying   

  1. 1. Institute of Chemical Metallurgy, Chinese Academy of Sciences, Beijing 100080, China;2. Metall. Eng. School, Univ. Sci. & Technol. Beijing, Beijing 100083, China
  • 出版日期:2001-06-20 发布日期:2001-06-20

Foaming Behavior in Molten Slag Caused by Decomposition of Carbonate Minerals

NIU Qiang, CHU Shao-jun, WU Keng, WANG Ying   

  1. 1. Institute of Chemical Metallurgy, Chinese Academy of Sciences, Beijing 100080, China;2. Metall. Eng. School, Univ. Sci. & Technol. Beijing, Beijing 100083, China
  • Online:2001-06-20 Published:2001-06-20

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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.

关键词: foaming slag, foam life, carbonate, thermal decomposition, Na2B4O7-CaO-MgO

Abstract: 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.

Key words: foaming slag, foam life, carbonate, thermal decomposition, Na2B4O7-CaO-MgO

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