微波加热含碳氧化锰矿粉固态还原过程中硫的分配

Sulphur Distribution of Reduction on Solid of Manganese Ore Fines Containing Coal by Microwave Heating

在rC：rO原子摩尔比为1．06、rCaO：rSiO2分子摩尔比为1．27的条件下，通过电子探针面扫描成分分析，对微波加热含碳氧化锰矿粉固态还原过程中硫的分配进行了研究。结果表明：加热温度为1000～1300℃时，88％-96％的硫分配于气相中，锰铁金属化物中的平均硫含量为0．002％～0．017％；随着微波加热温度的提高和保温时间的延长，锰铁金属化物中的含硫量与含铁量呈负消长的关系，而与含锰量呈正消长的关系；提高微波加热温度和延长保温时间，有利于进一步改善含碳锰矿粉的气化脱硫效果。与传统冶炼方法相比，微波加热含碳锰矿粉以气化脱硫为主，并可以获得良好的脱硫效果。

Under the condition of an atomic molar ratio of rC： rO as 1.06： 1 and a molecular molar ratio of rCaO ： rSiO2 as 1.27 ： 1, sulphur distribution reduction on solid state of manganese ore fines containing coal by microwave heating has been researched through electronic probe facescanning composition analysis. The results show that reducing desulphurization percentage on solid state is 88 to 96 percent,and the average sulfur content in ferromanganese metals is 0.002 to 0.017 percent. In company with material temperature and holding time increasing, the sulphur content in ferromanganese metals increases with the increment of manganese content, but decreases with the increment of iron content. It＇s helpful to further improve the gasification desulphurization effect of manganese ore fines containing coal to increase material temperature and the holding time. Compared with the traditional method of smelting, microwave heating manganese ore fines containing coal is gasification-based desulfurization, and get good results.