High-aluminum slag modifier for LF and preparation method thereof

• Main Authors: XIE PING, DENG XIAOBING, QING GUANGHONG, ZHAO JIE, LIU SONG, HU ZHIHAO, CHEN CHAO, GAO LIANG, BIAN CHENGJUN, CHEN ZE
• Format: Patent
• Language: Chinese; English
• Published: 20.04.2021
• Subjects: CHEMISTRY; METALLURGY; METALLURGY OF IRON; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS

The invention relates to a high-aluminum slag modifier for an LF and a preparation method of the high-aluminum slag modifier. The high-aluminum slag modifier comprises, by mass, 40-43% of aluminum particles, 15-19% of iron particles, 10-12% of casting residues, 24-26% of corundum slag, 2-3% of sodium carbonate, 5-7% of limestone and 0.8-1% of a binding agent. The preparation method comprises the following steps: uniformly mixing the aluminum particles, the iron particles, the casting residues, the corundum slag, the sodium carbonate and the limestone in proportion, adding the binding agent and water, and stirring to obtain a slag modifier mixture; pressing and molding the slag modifier mixture; and airing the slag modifier mixture, and dividing the air-dried slag modifier mixture into pellets to obtain the high-aluminum slag modifier. Therefore, the problem of poor deoxidation effect of a slag modifier in the prior art is solved. 本发明涉及一种LF炉用高铝调渣剂及其制备方法。该高铝调渣剂包括以下质量百分比的原料：铝粒40～43％、铁粒15～19％、铸余渣10～12％、刚玉渣24～26％、