滑石的干法分选工艺已有很长的历史了。干法分选包括干燥、研磨、空气分级。由于组成不同,滑石矿的比重也不同(通常为2.5～5之间),因而精确的空气分级和由此而达到精确的分选是很困难的。尽管近年来发展了高效率的空气分级机,但仍不能提供如湿法选矿那样好的效果。由于高纯度滑石需要量的增加,特别是造纸工业不仅要求滑石纯度高,而且还要求其中含有一定量的二氧化钛和含有较低的碳酸盐(二氧化碳的百分含量应小于2),干法选别不能满足这些要求,因而近年来很重视湿法的研究。湿法选别的试验研究包括湿 Talc dry separation process has a long history. Dry sorting includes drying, grinding, air classification. Due to the different compositions, the specific gravity of talcum is also different (usually between 2.5 and 5), so accurate air classification and thus precise sorting are difficult. In spite of the development of an efficient air classifier in recent years, it has not been able to provide as good a result as wet dressing. Due to the increasing demand for high-purity talc, especially the paper industry requires not only high purity of talc, but also a certain amount of titanium dioxide and a lower content of carbonates (the percentage of carbon dioxide should be less than 2), dry method Do not meet these requirements, so in recent years attaches great importance to wet research. Wet-type experimental studies include wetting