宜昌中间坪磷钾矿矿物学研究

Study on Process Mineralogy for Phosphate Potassium Ore in Zhongjianping,Yichang

对宜昌中间坪的磷钾伴生矿的化学组成、矿物组成及嵌布特征进行了研究。结果表明,该矿的主要矿物为钾长石(27%)、石英(51%),以及少量的胶磷矿(7%),黄铁矿(6%)、白云母(9%),杂质含量较高。形貌分析显示,钾长石为零星分布的细粒状结构,胶磷矿为不规则粒状嵌布。有用矿物与石英、黄铁矿等脉石矿物共生关系十分密切。根据矿石工艺性质,回收利用该磷钾矿,要考察磨矿细度,尽量使钾长石、胶磷矿与石英等脉石矿物解离。

In this paper, we analyzed the chemical composition, mineral composition, embedded features of phos- phate potassium ore in Zhongjianping, Yichang were analyze in this paper. The results indicate that the main miner- als distributed in the ore are 27% of potash feldspar,51% of quartz and and small quantity of collophanite ,pyrite and muscovite ,which are 7% ,6% and 9% respectively. While the content of impurities is relatively high. The morpholo- gy analysis indicates potash feldspar exists in the form of grain and collophanite in the form of irregular grain dis- semination. The relationship between desired minerals and gangue minerals such as quartz and pyrite is close. To re- cover the phosphate potassium ore better, a fine grinding of the potash feldspar should be investigated to dissociate potash feldspar, collophane and quartz according to the processing characteristics of the ore.