作者：GUO Zongqi1ZAMBONI Stefano1GAO Jianying2GAN Feifang3
作者單位：1. Trasteel International SA 2. Imerys (China) Co., Ltd. 3. Baoshan Iron & Steel Co., Ltd.
刊名：China’s Refractories
ISSN：1004-4493
出版年：2021-03-15
卷：30
期：1
起頁：41-48
止頁：
分類號：TQ175.1
語種：英文
關鍵詞：
內容簡介The residual expansion of in-situ spinel formation in using of alumina-magnesia-carbon（AMC） bricks monolizes the lining of steel-making ladles with the closure of their joints, which has been an effective solution avoiding washing out of the joints in ladle lining by the reduction of the penetration of liquid slag and molten steel. Alumina-magnesiacarbon refractories are overall reviewed, in terms of major raw materials, thermal evolution, corrosion and oxidation, and thermomechanical behavior, as well as type, addition and fraction of magnesia used. General commercial products contain 5%-10% MgO and 5%-10% C with a certain amount of metallic aluminum powder, which is believed to facilitate spinel formation at early stage of heating-up, although high magnesia containing AMC bricks are studied and used sometimes. With low ratio of Al2O3/C=12.9 and the carbon content of 6.4% C, AMC brick exhibits the highest corrosion resistance. It is important to determine the type, addition and fraction of magnesia used in AMC refractories for demonstrating high corrosion resistance and superior thermomechanical behavior.
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