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近年来,杭钢通过改善原料条件,提高操作水平,加强管理等措施,生铁产量提高,质量改善,能耗、成本下降.两座255米~3高炉在矿石入炉品位与风温水平不高,以及没有喷吹的条件下,1980-1981年年平均焦比降到560公斤左右,生铁合格率达99.98%.近几年的炼铁主要技术经济指标见表1.杭钢的实践表明:中小型炼铁厂只要坚持精料为基础,重视技术改造,发展生产有着广阔的前景.
In recent years, Hangzhou Iron and Steel by improving the raw material conditions, improve operational levels, strengthen management and other measures, pig iron production increased, quality improvement, energy consumption, cost decline.Which two 255 meters to 3 blast furnace into the furnace grade and air temperature is not high , And without blowing conditions, the annual average coke ratio in 1980-1981 dropped to about 560 kg, the pass rate of 99.98% pig iron in recent years, the main technical and economic indicators of iron in Table 1. Hangang practice shows that: As long as the iron and steel works in small and medium-sized iron-making plant adhere to concentrate on the basis of emphasis on technological innovation, development of production has broad prospects.