Development of recycling process of alloying elements for steel

在1673K控制氧硫分压的条件下，测定了Fe-Mn-Ca-S-O系和FeO-MnO-CaO-SiO_2-Mg_2O-P_2O_5渣系中锰和铁的平衡分配。结果表明，磷在冰铜中的分布与熔渣的分布不平衡。实验考察了炉渣组成、温度和气相中氧、硫势对锰、铁在冰铜和炉渣之间分配行为的影响。还发现(C2S-C3P)ss在水中的溶解行为与样品中的C3P比例和矿物相有关。根据这些结果，确定了炼钢炉渣硫化制取锰的基本工艺。

The equilibrium distribution of Mn and Fe between Fe-Mn-Ca-S-O system and FeO-MnO-CaO-SiO2-MgO-P2O5 slag was determined under the controlled partial pressure of oxygen and sulfur at 1673K. It was found that phousphorus was not distributed to the matte in equilibrium with the molten slag. The effects of slag compositions, temperature, and oxygen and sulfur potential in gas phase on the distribution behavior of manganese and iron between the matte and slag were experimentally examined. It was also found dissolution behavior of (C2S-C3P)ss in water depended on the C3P ratio and mineral phase in sample. From these results, fundamental technique has been established to obtain manganese through sulfurization of the steelmaking slags.