Development of recycling process of alloying elements for steel

在1673 K时，在控制氧分压和硫分压的条件下，测定了Mn、Fe在Fe-Mn-Ca-S-O系和FeO-MnO-CaO-SiO2-MgO-P2 O 5渣系中的平衡分配。发现磷没有分配到与熔渣平衡的冰铜中。实验研究了炉渣成分、温度、气相氧势和硫势对锰和铁在冰铜和炉渣之间分配行为的影响。（C2 S-C3 P）ss在水中的溶解行为与样品中C3 P比例和矿物相有关。研究结果为钢渣硫化提锰奠定了基础。

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.