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1984年上半年,攀钢炼铁厂生铁产量首次突破百万吨大关,与去年同期相比,高炉利用系数提高0.049tFe/m~3·d,焦比下降6kg/tFe。同时还完成科研、双革项目十项,创造、节约经济价值621万元。现将其中有代表性的、效益较大的项目介绍如下: （一）采用大批重正分装装料制度 为了强化高炉冶炼、降低焦比、提高煤气利用率,攀钢炼铁厂先后在三座高炉上进行了大批重分装试验。试验目的在于探索现有原料条件（烧结矿含铁量为46.13％,小于5mm粉末达17％）下,高炉采用大批重分装的可行性、合适的批重
In the first half of 1984, the pig iron production of Panzhihua Iron and Steel (Group) Co., Ltd. exceeded the 1-megaton mark for the first time. Compared with the same period of last year, the blast furnace utilization coefficient increased by 0.049tFe / m ~ 3 · d and the coke ratio decreased by 6kg / tFe. At the same time also completed scientific research, double leather project ten, create, save economic value 6.221 million yuan. Here are some of the representative and more effective projects are described below: (a) the use of a large number of heavy sub-sub-loading system In order to strengthen the blast furnace smelting, reduce coke ratio and improve gas utilization, Panzhihua Iron and Steel Works has in the three Block blast furnace carried out a large number of re-sub-test. The purpose of the test is to explore the feasibility of using a large number of re-subassembly in a blast furnace under the conditions of the existing raw materials (46.13% of the iron content of the sinter and 17% of the less than 5 mm of the powder)