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宝钢炼钢厂1号转炉第22炉役使用国产圆芯炉底全镁碳砖,自1990年8月28日开炉到12月1日按计划停炉,共产钢水44万余吨,炉龄达1505炉(复吹炉次1061炉),创造了宝钢开工投产以来的最高炉龄记录,同时也打破了1989年5月19日1号转炉16炉役使用日本品川株式会社提供的炉衬砖冶炼1502炉的记录。
Baosteel Steel Works No. 1 converter 22 furnaces use domestically produced round core furnace full magnesium carbon brick, since August 28, 1990 open to December 1, according to the scheduled shutdown, the communal molten steel more than 440,000 tons, furnace age Up to 1,505 furnaces (1061 furnaces with multiple blowing furnaces), setting the record of the highest furnace age since Baosteel started its operation, and also broke the furnace lining brick provided by Japan's Shinagawa Co., Ltd. on January 19, 1989 1502 furnace records.