高硅白云石皮江法炼镁实验

High Silica Dolomite Pidgeon Smelt Magnesium Experiment

皮江法炼镁要求白云石中SiO_2应小于0.5%。前人研究认为SiO_2在高温时与MgO生成2MgO·SiO_2,这是一种低熔点化合物,它会使白云石烧结,使煅烧后的白云石达不到炼镁的要求,在一定程度上降低收得率。本文研究了高硅(SiO_2为4.51%)白云石皮江法炼镁镁收率低的原因,提出并通过实验验证了高硅白云石采用皮江法炼镁,也可以达到高的镁收率。使高硅白云石采用皮江法炼镁成为可能。

Magnesium smelting by Pidgeon process requirements SiO2 should be less than 0.5% in dolomite. Previous studies that SiO2 with MgO style in the high temperature generated 2MgO. SiO2, It＇s a kind of low melting point compound. It can make the dolomite sintering. It lets the calcined dolomite could not reach the requirements of smelting magnesium, a certain extent, reduce the yield. This paper studies the reason of low yield in magnesium smelting by Pidgeon process used high silica （SiO2 4.51%） dolomite. And proposed and verified by the experimental it can achieve high magnesium yield high by Pidgeon process used high silica （SiO2 4.51%） dolomite. It is possible of magnesium smelting by Pidgeon process used high silica dolomite.