A key to ore dressing of quartz sands includes rude ores of high or low quality, occurrence and distribution of detrimental impurity such as iron and aluminium in size grades of placer deposits. 石英砂原矿质量的优劣,有害杂质铁、铝的赋存状态及其在各粒级砂矿中的分布,是决定选矿效果的关键。
This paper has studied the cleaning process for extracting phosphoric acid that is produced by hydrochloric acid by means of optimizing several technology parameters so decreasing the dissolve of detrimental impurity. 利用盐酸浸取磷矿石,通过优化各工艺参数,控制有害杂质的浸出,实现了盐酸萃取磷酸的清洁工艺。
Lead is the detrimental impurity in molybdenum concentrate. 铅是钼精矿中的有害杂质。