南钢高炉从1984年元月起配用澳矿,澳矿配比一直在5～10%.因为每次较大的变料都使软融带根部大幅度移动,加之澳矿含粉较多和具有低温爆裂性,如大量使用将恶化炉况.断料时一度澳矿配比达到20～30%,全生矿入炉,往往连续崩料不止,造成顽固悬料.所以,在有其他料时,高炉一般都不愿意使用澳矿.1985年澳矿配比在5～8%,1986年在3～10%,1987年为5～15%,为提高矿石综合品位,增加澳矿配比,自1987年10月起实行了澳矿入炉前集中过筛.澳矿过筛前平均含粉为19.5%,最高时达28%, Nangang blast furnace from January 1984 with the Australian mining, ore ratio has been in the 5 to 10% .As each of the larger variables make the root of soft and molten substantial movement, combined with Australian ore more powder And has a low temperature burst, such as heavy use will worsen the furnace condition.Once the material was cut ore Australia ratio of 20 to 30%, all-ore into the furnace, often more than continuous collapse, resulting in stubborn suspended material.So, in other The blast furnace is generally not willing to use the ore .In 1985, the proportion of Australian mining is 5 to 8%, in 1986 in 3 to 10%, 1987 to 5 to 15%, in order to improve the comprehensive grade of ore, increase ore mining Compared with the centralized screening of the Australian ore before it was put into operation in October 1987. The average powder content of the ore before sieving was 19.5% and the highest was 28%