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二十三年来,我国钢铁工业在毛主席无产阶级革命路线指引下,获得了飞跃发展。钢年产量由建国初期的几十万吨增长到1972年的2300万吨。同时,铁矿石的开采和选矿也得到了迅速发展。我国大、中型铁矿选矿厂,建国初仅有两处,1970年已发展到几十处,地方中小型矿山星罗棋布。1970年入选的贫铁矿相当于1950年的六十倍。入选矿石由单一磁铁矿石发展到同时能处理磁铁矿石和弱磁性铁矿石,且其比例逐步增加,从1958年到1971年,处理的弱磁性铁矿石占入选贫矿石总量的18%。
Twenty-three years ago, our country's steel industry gained rapid progress under the guidance of Chairman Mao's proletarian revolutionary line. Annual output of steel increased from a few hundred thousand tons in the early days of the founding of New China to 23 million tons in 1972. At the same time, the mining and beneficiation of iron ore have also been rapidly developed. China's large and medium-sized iron ore concentrator, only two at the beginning of the founding, 1970 has grown to dozens of local small and medium-sized mines dotted. The iron-poor mine selected in 1970 is equivalent to sixty times of 1950's. The selected ore was developed from a single magnetite ore to both magnetite ore and weakly magnetic iron ore, and its proportion increased gradually. From 1958 to 1971, the treated weak-magnetism iron ore accounted for 18% of the total amount of selected ores.