铁液碱性熔渣脱砷

中国储藏有大量的含砷铁矿。由于目前国内外钢铁生产流程中没有成熟的脱砷工艺。因此，开展钢铁脱砷技术研究对充分利用含砷铁矿资源，提高钢纯净度等有着迫切的现实意义。通过电阻炉上一系列实验研究，结果表明：CaO碱性熔渣对铁水可取得较好的脱砷效果；脱砷炉渣的X射线衍射分析表明CaO基碱性熔渣对铁液脱砷的产物是Ca3As2，脱砷反应为还原反应；脱砷的热力学条件是：W本系的氧位越低，铁注中硫含量越低、脱砷温度越高，熔渣碱度越高，脱砷效果越好。

Study on the Dearsenization of Hot Metal Using CaO Basis Fluxes

There is plenty of iron ore with arsenic in China. Because a proven dearsenization technique does not come into existence in now iron making and steel making processes and it is necessary for developing the dearsenization of hot metal technologics. A serial of dearsenization experiments are carried out on electric resistance heated furnace, it's found that arsenic in hot metal can be removed by CaO basis fluxes. X ray qualitative analysis of CaO basis slag after dearsenization revealed that the product of hot metal dearsenization with CaO slag is Ca 3As 2 and the dearsenization reaction is a reducing one. The thermodynamic conditions of dearsenization of hot metal using CaO basis fluxes are that the lower of oxygen fraction pressure of the system and s] in hot metal, the higher of temperature of the system and basically of the slag, the dearsenization efficiency is better.