首钢水钢菱铁矿大配比配加试验研究及生产实践

Experimental Study and Productive Application with Addition of Large Proportion of Siderite in Shuigang of Shougang

贵州省属于铁矿石资源相对贫乏的省份，铁矿石贮量少，且相对分散，铁矿石品住低，矿石多属于烧结性能较差的菱铁矿、褐铁矿，为充分利用这些资源，在烧结矿生产中多配加菱铁粉，可以起到降低生产成本的目的，但菱铁粉配比过高后，由于烧损大，烧结矿中形成大量的孔洞会影响到烧结矿强度，首钢水钢通过本试验研究大配比菱铁矿情况下通过合理的配矿及烧结生产参数的调整达到保证烧结矿强度的情况下增大菱铁矿配矿比的可能性。

Guizhou is a province with less and dispersive iron ore resources. Furthermore, the grade of iron ore is low and most of iron ore is siderite and limonite with poor sintering character in Guizhou. In order to make full use of theses iron ore resources, much siderite powder is added in sin- tering process to decrease production cost. However, ff too much siderite powder is added into sinter, the strength of sinter decreases due to large burning loss and a lot of holes arising during sintering process. With experimental study of sintering test with large proportion of siderite in Suigang, it is shown that, in the ease of large proportion of siderite, with rational ore mixing and sintering parameter adjusting, the strength of sinter is ensured so that it is feasible to increase proportion of siderite.