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本文研究了浙东某伊利石矿的物质组成、伊利石的晶体结构和化学组成，指出影响矿石白度的主要因素为深色石英和碳质物，提出重选脱除游离石英、控制一定粒度的矿石焙烧以及酸浸后焙烧，均是提高矿石白度的有效途径。
In this paper, the material composition of an illite in East Zhejiang and the crystal structure and chemical composition of illite were analyzed. The main factors influencing the whiteness of the ore were dark quartz and carbonaceous matter. It was proposed that heavy quartz could be removed by gravity separation, Ore roasting and acid leaching after roasting, are effective ways to improve the whiteness of ore.