用卡拉加斯烧结矿和阿斯曼矿生产锰硅合金的中试试验比较研究

STUDY OF SiMn PRODUCTION IN PILOT SCALE EXPERIMENTS-COMPARING CARAJAS SINTER AND ASSMANG ORE

在150kW中试矿热炉(SAF)中,通过三次试验研究了锰硅合金的生产。其中两次试验是以卡拉加斯烧结矿为原料,第三次试验是以质量比为40/60的卡拉加斯烧结矿和阿斯曼矿混合物为原料。前两次试验生产的合金中Si含量低于阿斯曼矿石与卡拉加斯烧结矿混合物生产的合金中Si含量。锰原料的熔化性能测试结果表明,烧结矿比阿斯曼矿石的熔化温度低,烧结矿有助于生产低硅合金。

Production of SiMn has been studied by 3 experiments in a 150 kW pilot scale submerged arc furnace(SAF).Two of the experiments were with sinter form Carajas ore as raw material while the third experiment was with a 40/60 mixture of sinter from Carajas ore and ore from Assmang.Alloy produced in the two first experiments had a lower Si-content than alloy from the experiment where Assmang ore was mixed with Carajas sinter.Measurements of melting properties of the Mn-sources showed that the sinter melted at a lower temperature than the Assmang ore.This is believed to contribute to the lower%Si in alloy produced by sinter.