测定刚玉型硅线石矿中硅线石及刚玉

Determination Sillimanite and Corundum in Corundum-Type Sillimanite Ore

本文针对河北某地刚玉型硅线石矿物的共生组合特征进行了化学物相分析方法的研究。利用硅线石和刚玉难溶于氢氟酸的特性,进行了选择性溶矿,在分离干扰矿物后测定不溶矿物中的硅和铝,经换算分别求得硅线石和刚玉含量。批量生产证明,方法简单、易行、重现性良好。

The phase analysis of the ore was investigated to accomodate the actual paragenetic association of minerals.Advantage was taken of the fact that silli-manite and corundum resist HF attack.The sample was treated with HF+HC1,and the insoluble residue analyzed for silica and alumina.The amounts of silli-manite and corundum were calculated from the corresponding silica and alumina values.The method is easy and gives reproducible results.