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通过单向加热炉模拟保护渣在结晶器内的熔化过程,研究了6种碳质材料对保护渣熔化速度和熔融结构的影响。结果表明:含量相同时对保护渣熔化速度的控制作用最强的是超细石墨,而后依次是半补强炭黑、390石墨、中超炭黑、土状石墨、增碳剂;配碳方式相同时,保护渣的熔化温度越高,其熔化速度越慢;采用炭黑加石墨的配碳方式时保护渣的烧结层厚度随碳含量增加而减薄,且若炭黑量小于2%时形成多层熔融结构,否则将形成不含半熔层的3层结构。
The melting process of mold flux in the mold was simulated by one-way heating furnace. The effects of six kinds of carbonaceous materials on the melting speed and melting structure of mold flux were studied. The results show that: the same content of the flux of flux control the strongest role of superfine graphite, followed by the semi-reinforcing carbon black, 390 graphite, super-black, earth graphite, carbon agent; with carbon phase At the same time, the higher the melting temperature of the mold flux, the slower the melting rate; the thickness of the sintered layer of the mold flux decreases with the increase of the carbon content when using carbon black with graphite, and forms when the amount of carbon black is less than 2% Multi-layer melting structure, otherwise it will form a three-layer structure without semi-melting layer.