用两液分选法精选高岭土

• 作 者: H.L.Shergold 晓辉
• 出 处: 国外金属矿选矿
• 发表日期: 1979年12期
• 关键词: 高岭土 微米 白度 泡沫浮选 粘土 亲油性 捕收剂 颗粒物料 电气石 细粒

处理美国沉积高岭土粘土的其中一个问题就是除去细粒的(<5微米)二氧化钛以及铁氧化物。现行的处理方法只是在—2微米颗粒物料不超过60％时才有效。所研究的两液分选法是用来从极细的粘土(90％—2微米)中除去矿物杂质。这个方法包括将带捕收剂的非极性油加到分散的粘土矿浆中,使杂质产生亲油性。分离油和水相便得到粘土产品,其白度要比用其他选别法,诸如泡沫浮选和磁选法好。

One of the problems with dealing with U.S. sedimentary kaolin clays is the removal of fine-grained (<5 microns) titanium dioxide and iron oxides. The current treatment is only effective when the -2 micron particle material does not exceed 60%. The two-liquid separation method studied was used to remove mineral impurities from very fine clays (90% -2 microns). This process involves adding a non-polar oil with a collector to the dispersed clay slurry to make the impurities oleophilic. Separating the oil from the aqueous phase results in a clay product which is more white than other sorting methods such as froth flotation and magnetic separation.