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金属学报  1998, Vol. 34 Issue (8): 875-879    
  论文 本期目录 | 过刊浏览 |
硼酸盐熔体发泡行为的研究
储少军;王颖;吴铿;潜伟
北京科技大学冶金学院;北京;100083;北京科技大学冶金学院;北京;100083;北京科技大学冶金学院;北京;100083;北京科技大学冶金学院;北京;100083
THE FOAMING BEHAVIOUR OF BORATE MELTS
CHU Shaojun; WANG ying; WU Keng; QIAN Wei(Metallurgical Engineering School; University of Science & Technology Beijing; Beijing 100083)Correspondent: CHU Shaojun; associate professon Tel: (010)62334692; Fax: (010)62322845
引用本文:

储少军;王颖;吴铿;潜伟. 硼酸盐熔体发泡行为的研究[J]. 金属学报, 1998, 34(8): 875-879.
, , , . THE FOAMING BEHAVIOUR OF BORATE MELTS[J]. Acta Metall Sin, 1998, 34(8): 875-879.

全文: PDF(493 KB)  
摘要: 本文测定了CaO—Na2B4O7熔渣体系的粘度.当CaO含量(mol分数,%)由0增至28.6时其粘度由0.759降至0.033Pa·s.采用外生气源(Ar气)和内生气源(CaCO3热分解)两种供气方式,分别研究了该渣系的发泡行为由外生气源发泡实验得到的发泡指数Σ值较为接近,而用熔渣物性参数计算公式所估算的发泡指数Σ值相差很大.由于发泡指数Σ不能描述内生气源发泡过程泡沫高度与时间的变化关系,建议采用平均发泡寿命来评价熔体的发泡行为
关键词 CaO—Na_2B_4O_7熔渣体系热分解发泡寿命泡沫指数    
Abstract:The measuring results for the viscosity of CaO--Na2B4O7 melts showed that the viscosity decreases from 0.759 to 0.033 Pa.s when the CaO contents Vary from 0 to 28.6mol%. The foaming behavior was investigated by means of injecting Ar and decomposing CaCO3 respectively. The foaming index Σ in the case of injecting Ar changes a little bit, but the values calculated with viscosity, density and surface tension have large deviation. With the average foaming life ,the foaming behavior of the melt in the decomposing CaCO3 could be described rationally, while in this case the foaming index Σ can not be applied to indicate the complicated measurement result.
Key wordsCa-Na2B4O7 melt    decomposition    average foaming life    foaming index
收稿日期: 1998-08-18     
基金资助:国家自然科学基金!59574026
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