萤石含量对结晶器保护渣物理性质和渣膜矿相结构的影响

特殊钢 ›› 2016, Vol. 37 ›› Issue (1): 9-12.

萤石含量对结晶器保护渣物理性质和渣膜矿相结构的影响

王凯强¹, 韩秀丽¹, 刘丽娜¹, 丁宁², 张翼飞¹

1华北理工大学矿业工程学院，唐山063009
2唐钢中厚板有限公司，唐山063009

收稿日期:2016-08-31 出版日期:2016-02-01 发布日期:2022-08-16
作者简介:王凯强(199Q-),男,硕士生,2013年邯郸学院(本科)毕业,工艺矿物学研究。
基金资助:
国家自然科学基金资助(51174073) (U1360106)
华北理工大学科学研究基金项目(2201401)

Effect of Fluorite Content on Physical Properties of Mould Powder and Mineralogical Structure of Flux Film

Wang Kaiqiang¹, Han Xiuli¹, Liu Lina¹, Ding Ning², Zhang Yifei¹

1 College of Mining Engineering, North China University of Science and Technology, Tangshan 063009 ；
2 Tanggang Medium and Heavy Plate Co Ltd, Tangshan 063009

Received:2016-08-31 Published:2016-02-01 Online:2022-08-16

摘要/Abstract

摘要： 针对亚包晶钢连铸板坯易发生表面纵裂现象,研究和分析了萤石配加量对保护渣（/%:2937水泥熟料,8硼砂,20石英砂,15硅灰石,12纯碱,816萤石）熔化温度、黏度和平均热流密度以及渣膜矿相结构的影响。结果表明,随着萤石含量的增加,渣膜结晶率和枪晶石含量升高,硅灰石含量降低,同时保护渣熔化温度、黏度、平均热流密度降低;提出萤石配加量为12%时,能满足亚包晶连铸板坯对渣膜矿相结构的要求,并改善了铸坯质量。

Abstract: According to the issue of easily forming surface longitudinal crack on casting slab of hypo-peritectic steel, the effect of fluorite adding amount on melting temperature, viscosity and average heat flux of mould powder (/% ： 29 〜37 cement grog, 8 borax, 20 quartz sand, 15 wollastonite, 12 soda, 8 ~ 16 fluorite) , and mineralogical structure of flux film has been studied and analyzed. Results show that with increasing fluorite content the crystallization ratio of flux film and cuspidine content in film increase, the wollastonite content in film decreases, and the melting temperature, viscosity and average heat flux of mould powder decrease. It is obtained that adding fluorite content 12% in mould powder could satisfy the requirement on mineralogical structure of flux film for hypo-peritectic steel casting slab and improve the quality of casting slab.

王凯强, 韩秀丽, 刘丽娜, 丁宁, 张翼飞. 萤石含量对结晶器保护渣物理性质和渣膜矿相结构的影响[J]. 特殊钢, 2016, 37(1): 9-12.

Wang Kaiqiang, Han Xiuli, Liu Lina, Ding Ning, Zhang Yifei. Effect of Fluorite Content on Physical Properties of Mould Powder and Mineralogical Structure of Flux Film[J]. Special Steel, 2016, 37(1): 9-12.

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