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安徽省含山县陶厂石膏矿资源储量大,石膏质量较好,但石膏层的化学组分在垂向上及横向上有较大变化。为了研究矿石品位的分布,对陶厂石膏矿首采区硬石膏的井下钻孔、巷道以及采房取样,测试了硬石膏中SO3、CaO、MgO含量及烧失量(LOSS),并分析了各之间的关系。分析结果表明:首采区-400 m水平矿石SO3含量由底到顶有降低的趋势;随着CaO含量的增加,SO3含量明显增加;随着MgO含量的增加,样品的烧失量增加。首采区-400 m水平矿石品位变化原因一方面与沉积相的变化有关,另一方面与地质构造有关。
Gaoshan County, Anhui Province pottery gypsum ore reserves, gypsum quality is good, but gypsum layer chemical composition in the vertical and horizontal have greater changes. In order to study the distribution of ore grade, the underground boreholes, tunnels and mining houses in the first mining area of pottery plant gypsum ore were sampled and the content of SO3, CaO, MgO and the loss on ignition (LOSS) in anhydrite were tested. The relationship between each. The results show that the content of SO3 in the ore of -400 m in the first mining area tends to decrease from the bottom to the top, and the content of SO3 increases obviously with the increase of CaO content. The loss on ignition increases with the increase of MgO content. The reason for the change of ore grade at the level of -400 m in the first mining area is related to the change of sedimentary facies and the geological structure on the other hand.