莱芜钢铁总厂第二铁厂２＃７５０ｍ３高炉在生产中采取提高烧结矿碱度、配用高品位进口矿、减少入炉粉末、稳定焦炭质量及稳定炉温、适当提高炉渣碱度、提高风温和顶压等一系列措施，使生铁含硅量由０．８４１％降为０．６３７％，生铁一级品率由４２．６７％提高到５４．６１％，高炉综合技术经济指标提高。 2 # 750m3 blast furnace of the second ironworks of Laiwu Iron and Steel Plant Take improving alkalinity of sinter in production, allocating high-grade imported ore, reducing input powder, stabilizing coke quality and stabilizing temperature, raising slag basicity properly, Moderate pressure and a series of measures to reduce the silicon content of pig iron from 0.841% to 0.637%, pig iron first grade product rate from 42.67% to 54.61%, blast furnace comprehensive technical and economic indicators.