云南省某高岭土矿的工艺矿物学研究

以云南省某高岭土矿为研究对象, 通过XRD、XRF、光学显微镜、扫描电镜(SEM)和电子探针(EPMA)等测试手段对该矿进行了系统的工艺矿物学研究。结果表明: 该高岭土矿的矿物组成主要是高岭石、石英和少量的白云母。高岭土-0.045 mm的产率为55.72%。分级后高岭石主要富集在-0.020 mm粒级, 高岭石形貌多为结合紧密的叠片状或蠕虫状, 少量呈管状。煅烧后白度由63.96%提高到85.92%。铁和钛杂质元素主要赋存在赤褐铁矿、金红石等独立矿物中。高岭土矿通过简单的分级提纯, 可达到陶瓷工业和橡塑工业的相关标准。 

Study on Process Mineralogy of the Kaolin Ore in Yunnan Province

Taking a kaolin ore in Yunnan Province as the research object, a systematic process mineralogy study was carried out by XRD, XRF, optical microscope, scanning electron microscope (SEM) and electron probe microanalyzer (EPMA). The results showed that the mineral composition of the kaolin ore was mainly kaolinite, quartz and a small amount of muscovite. The yield of kaolin-0.045 mm class was 55.72%. After classification, kaolinite was mainly enriched in -0.020 mm classes. The morphology of kaolinite was mostly laminated or wormlike, and a small amount was tubular. Whiteness increased from 63.96% to 85.92% after calcination. Iron and titanium impurity elements mainly occur in independent minerals such as hematite and rutile. Through simple classification and purification, kaolin ore can meet the relevant standards of ceramic industry and rubber and plastic industry.