江西某低品质高岭土矿综合利用技术研究

以江西某低品质高岭土矿为研究对象，在原矿化学元素、矿物组成等分析的基础上，制定了高岭土提纯工艺及尾矿综合利用技术方案。原矿采用"捣浆—分级—提纯—磁选—化学漂白"工艺进行选别，得到高岭土深加工产品，其高岭石含量82%，自然白度79.8%、烧成白度90.1%，Fe2O3含量0.54%；尾砂经分级、磨矿、浮选，分离白云母与石英两种产品，其中白云母产品中K2O含量达到7.89%，白云母矿物含量85%，石英产品中SiO2含量达到97.78%，石英矿物含量96%。工艺流程对该高岭土矿实现了全组分综合利用，解决了低品质高岭土矿利用率低、尾矿大量排放的难题。

Study on Comprehensive Utilization Technology of a Low Quality Kaoline Ore in Jiangxi

Taking a low quality kaolin ore in Jiangxi as the research object, basing on the analysis of ore mineral composition, chemical elements and so on, a technological process of purification of kaoline and of comprehensive utilization technology of its tailings was put forward. By studing on the processing technology of raw ore, such as pulp purification, magnetic separation and chemical bleaching, highly processed products of kaoline was obtained. The content of kaolinite reaches 82%, the natural whiteness 79.8%, the burning whiteness 90.1%, and the content of Fe₂O₃ is reduced to 0.54%. Following by classification, grinding, flotation for tailings, two products namely muscovite and quartz can be obtained. The content of K₂O in muscovite obtained can reach 7.89% and the content of SiO₂ in quartz obtined reaches 97.78%.The mineral content of Muscovite reaches 85% and the mineral content of quartz reaches 96%, respectively. The technological process realizes the comprehensive utilization of the kaoline ore, and solves the problem of the low utilization rate of low quality kaoline ore and large accumulation of tailings.