近年来,我国竖炉球团矿质量有了显著的提高。生产时间较长的济南钢铁厂与杭州钢铁厂球团矿转鼓指数(大于5毫米%)分别达到87.52%和94.22%,杭钢抗压强度达235公斤/球(80年1～10月平均数),竖炉球团矿已成为高炉炼铁的优质原料。我们安阳钢铁厂水冶分厂竖炉78年投产,现在球团矿转鼓指数也已达到84.4%(80年11月～ In recent years, China’s shaft furnace pellet quality has been significantly improved. The drum index (more than 5 mm%) of the long-term production of Jinan Steel Plant and Hangzhou Iron & Steel Works pellets reached 87.52% and 94.22% respectively, and the Hangchuang compressive strength reached 235 kg / ball (from January to October in 1980) Number), shaft furnace pellet has become a high-quality blast furnace raw materials. We Anyang Iron and Steel Plant hydrometallurgical plant shaft furnace put into operation 78 years, and now the pellet drum index has reached 84.4% (November 80 ~