摘要
依据相似定理,通过二维水模型模拟顶吹转炉吹炼过程.利用数码相机进行摄影,通过对图像的计算机处理,研究了顶吹过程中炉渣与钢液母相边界的变化.应用分形理论对其边界的织构分维数及无量纲长度进行了计算.结果表明,吹炼过程中枪位、吹气流量及渣金比对炉渣与钢液母相边界的织构分维数影响较大,其中流量为主要影响因素.得出了三者对织构分维数的影响及织构分维数对无量纲长度影响的经验关系式,渣金母相边界织构维数是评价二维渣金母相边界长度的重要依据.分形理论可以为转炉吹炼过程中渣金母相边界的量化计算提供一种有效的方法.
Based on the law of similarity, a top-blowing converter is simulated with water modeling. A digital camera is used to take pictures. Digital image processing is carried out with computer. The length of slag-metal boundary in a top-blowing steelmaking converter is experimentally studied with fractal dimension theory, aiming to examine its variation with blowing parameters. The textural fractal dimensions and dimensionless length of the slag-metal boundary are calculated from the mixing images under various blowing conditions. The result shows that the lance position, gas flowrate and slag quantity have great influence on the transition of texture fractal. Furthermore, gas flowrate is primary factor. Experimental relationships between the transition textural fractal dimension and the blowing parameters are obtained. Empirical formulae for calculating the dimensionless length and fractal dimension are discussed. The experiment proves that textural fractal dimension is important basis for estimating dimensionless length of the slag-metal boundary. The fractal theory is one of effective ways used to quantitatively calculate the slag-metal boundary.
出处
《过程工程学报》
EI
CAS
CSCD
北大核心
2005年第1期103-106,共4页
The Chinese Journal of Process Engineering
关键词
炼钢转炉
水模型
渣金边界
织构分维数
steelmaking converter
water model
slag-metal boundary
textural fractal dimension
