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摘自《耐火材料》1983年,No.2,p.6～15, 北京钢铁研究总院九室和北京重型机器厂的文章。国外在炉外精炼设备中主要采用高纯镁砖、直
Excerpt from “refractory” 1983, No.2, p.6 ~ 15, Beijing Iron and Steel Research Institute Room 9 and Beijing Heavy Machinery Plant article. Abroad outside the furnace refining equipment mainly used high-purity magnesium brick, straight