Preparation of High-purity Quartz Sand by Purifying a White Pegmatite in Inner Mongolia
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摘要:
这是一篇矿物加工工程领域的文章。针对内蒙古某白伟晶岩样品进行工艺矿物学研究，采用“焙烧水淬-热压混合酸浸”实验工艺流程对内蒙古某地白伟晶岩进行选矿实验研究。通过条件实验研究得到较佳工艺条件，高纯石英砂中SiO2含量由99.917%提高到99.994%，杂质元素总含量从419.9 g/t下降到54.79 g/t，总去除率达86.95%；主要杂质元素Al含量从250.9 g/t下降到26.09 g/t，Al元素去除率达到了89.60%，取得了较好的纯化效果。
Abstract:This is an essay in the field of mineral processing engineering. Based on the process mineralogy, a mixed process containing roasting-water quenching-hot pressure leaching was applied to purify a white pegmatite ore from Inner Mongolia. The optimum condition was obtained via various tests. The content of SiO2 in the final product was increased from 99.917% to 99.994%, while the total impurity content was decreased from 419.9 to 54.79 g/t, with a total removal of 86.95%. The main impurity element of Al was decreased from 250.9 g/t to 26.09 g/t, with a removal of 89.60%. Therefore, this study provides a good purification approach for high-purity quart preparation.
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表 1 白伟晶岩石英砂中主要杂质元素含量/(g/t)
Table 1. Contents of main impurity elements in white pegmatite quartz
Al B Fe Li Ti K Na S 总量 SiO2/% 250.90 37.90 14.00 34.40 6.60 15.80 42.30 18.00 419.90 99.917 
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表 2 精矿元素含量/(g/t)
Table 2. Chemical composition of concentrate
名称 Al B Fe Li Ti K Na S 总量 SiO2含量/% 含量 23.85 1.30 2.20 6.70 3.20 5.80 8.60 0.90 52.55 99.994 热压酸浸去除率/% 90.50 96.60 84.30 80.50 51.50 63.30 79.70 95.00 87.46
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