论文部分内容阅读
本专利为有关从钢铁厂的高炉、转炉、电炉等的炉渣中回收高品位粒状铁的方法。过去钢铁厂的炉渣是用于填筑、或是通过手选、磁选等将铁块回收后,返回作炼铁原料,而将炉渣扔掉。本发明的要点是由两步工序构成。第一步工序是将钢铁厂的炉渣破碎后,用网眼为10毫米的筛子对经磁选而得到的精矿部分进行筛分;第二步工序是将第一步工序中经筛分得到的大于10毫米的部分和小于10毫米的部分分别做如下处理,即:大于10毫米的部
This patent is a method for recovering high-grade granular iron from slag of blast furnaces, converters, electric furnaces and the like in steel mills. In the past, the steelworks’ slag was used for filling, or the iron was recovered by hand selection, magnetic separation, etc., returned to the ironmaking raw material, and the slag was thrown away. The gist of the present invention consists of two steps. The first step is to crush the slag of the steel plant, and the part of the concentrate obtained by magnetic separation is sieved with a sieve with a mesh of 10 mm. The second step is to sieve the concentrate obtained through the first step Parts larger than 10 mm and parts smaller than 10 mm are respectively treated as follows, that is, portions larger than 10 mm