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采用圆柱形硅铁试样 ,通过连续测量其浸入不同温度铁液后的体积和温度变化 ,对硅铁在铁液中的熔解动力学进行了研究 .结果表明 :硅铁浸入铁液至完全熔解分为两个时期 ,即铁壳期和熔解期 ;硅铁在高温铁液与低温铁液中的熔解机制不同 ,当铁液温度高于 1330℃时 ,硅铁的熔解主要为熔化机制 ,当铁液温度低于 130 0℃时 ,硅铁的熔解是两步溶解机制 ,即硅铁先与铁液反应生成包含多个高熔点固相的固液多相混合物 ,然后再以溶解方式溶入铁液 .
The cylindrical ferrosilicon samples were used to study the melting kinetics of ferrosilicon in molten iron by continuously measuring the volume and temperature changes of the molten ferrosilicon immersed in molten iron at different temperatures.The results show that the ferrosilicon is immersed in molten iron until it is completely melted Which is divided into two periods, namely, the shell phase and the melting phase. The melting mechanism of ferrosilicon in high temperature molten iron and low temperature molten iron is different. When the molten iron temperature is higher than 1330 ° C, the melting of ferrosilicon is mainly melted mechanism. Ferroalloy temperature is below 130 0 ℃, the melting of ferrosilicon is a two-step dissolution mechanism, that ferrosilicon first reaction with the molten iron to generate solid-liquid multi-phase mixture containing a number of high-melting point solid phase, and then dissolves dissolved Iron liquid.