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(一)绪言 近年来,炼铁技术有了显著进步,1973年是钢铁生产的高峰时期,日本年产生铁达9126万吨。其后由于经济形势的急剧变化,不得不采取相应的节油、节能和减产措施。现在以十年为一阶段来看看每个阶段炼铁技术的进步:1945～1955年是战后恢复时期;1955～1965年,高炉采用综合鼓风、高压操作技术和自熔性烧结矿,改善原料性质,加强原料整粒,为下一阶段做准备;1965～1970年,以上述新
(A) Introduction In recent years, iron making technology has made significant progress, 1973 is the peak of steel production, Japan’s annual output of 91.26 million tons of iron. Subsequently, due to the drastic changes in the economic situation, it was necessary to adopt appropriate fuel economy, energy saving and production reduction measures. Now take a decade as a stage to see the progress of each stage of ironmaking technology: 1945 ~ 1955 is the post-war recovery period; 1955 ~ 1965, the blast furnace using integrated blasting, high-pressure operation and self-fluxing sinter, Improve the nature of raw materials, raw materials to strengthen the whole grain for the next phase to prepare; 1965 ~ 1970, the above new