摘要
研究了浸入式水口堵塞的形成机理。堵塞沉积主要是由于氧化物颗粒附着到浸入式水口耐火材料的内表面,继而烧结在一起所致。小沉积颗粒的烧结形成不规则的网状物。耐火材料和钢水间反应层的形成,尤其是当耐火材料中含二氧化硅可还原组分,则加速沉积。另外,采取改善水口材质、改善和维护水口形状、提高钢水清洁度、对钢水夹杂物进行变性处理等措施,可有效防止水口堵塞。
The forming mechanism of the submerged nozzle clogging is investigated. The clogging deposit is mainly due to the attachment of oxide particles onto the inner surface of the submerged nozzle refractory followed by sintering. Sintering of the small deposited particles creates an irregular network. The formation of a reaction layer between refractory material and liguid steel enhances deposition, in particular if the refractory contains reducible Qomponents, e.g. SiO2. The measures for preventing nozzle clogging, are improving nozzle materials,improving and maintaining nozzle shape,increasing steel cleanliness and modificating the inclusions in steel.
出处
《中国冶金》
CAS
2006年第3期8-9,20,共3页
China Metallurgy
关键词
连铸
浸入式水口
堵塞
改善措施
continuous casting
submerged nozzle
clogging
improvement measure
