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转炉出钢后,钢包中的渣子是造成钢水再氧化,导致钢水污染的主要原因之一。为了进一步提高钢水的洁净度,日本新日铁公司广烟钢厂开发了一项在钢包中加入“RS除渣块”(Reducing Slag Briquet)对渣子改质的新技术,从而使连铸板坯的质量明显提高。“RS除渣块”由Al和CaCO_2组成,在转炉出钢后二次精炼实施前加入钢包。渣子改质的主要机理为:通过CaCO_2高温分解产生的搅拌作用,使Al在熔渣中的还原反应更均匀、更有效。渣子改质处理结果表明:添
After the tapping of the converter, the slag in the ladle is one of the main causes of re-oxidation of the molten steel and lead to the contamination of molten steel. In order to further improve the cleanliness of molten steel, Japan’s Nippon Steel Company, Guangyan Steel, has developed a new technology to modify the slag by adding “RS Slag Briquet” to the ladle, so that the continuous casting slab The quality is obviously improved. The “RS Cleaner Block” consists of Al and CaCO 2 and is added to the ladle before the secondary refining of the converter after tapping. The main mechanism of slag modification is as follows: the reduction reaction of Al in the slag is more uniform and effective through the stirring effect caused by the pyrolysis of CaCO 2. Residue modification results show: Tim