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本文从原料准备这个侧面阐述了首钢精料的发展。50年代末首钢有铁无矿,炼铁连年亏损。60年代初期有了矿山和烧结厂,至中期首钢炼铁效益跨进先进行列。70年代后期首钢矿山大幅度提高了精矿品位,使高炉渣量逐步降到350kg以下,80年代坚持进一步提高精矿品位,使精矿成本保持在30元左右,使投资效益提高50％。
This article explains the development of Shougang concentrate from the aspect of raw material preparation. In the late 1950s, there was iron ore-free in Shougang, and the iron making suffered losses year after year. In the early 1960s, with mines and sinter plants, the efficiency of Shougang Iron and Steel Industry advanced into the advanced ranks in the medium term. In the late 1970s, Shougang Mine substantially improved its grade of concentrate and gradually reduced the amount of blast furnace slag to less than 350kg. In the 1980s, it continued to further improve the grade of concentrate and kept the cost of concentrate at around RMB 30, which increased the investment efficiency by 50%.