从高岭土中富集地开石和珍珠陶石的实验研究

本文报道了用氢氟酸溶蚀的方法，从天然高岭土中分离和富集地开石或珍珠陶石。研究表明，用适当的氢氟酸溶蚀处理，与高岭石伴生的微生地开石或珍珠陶石被富集于残余粘土中，从而达到分离和富集地开石或珍珠陶石的目的．在高岭石、地开石和珍珠陶石中，以珍珠陶石耐氢氟酸的稳定性最好，地开石次之，高岭石最易被溶蚀。

AN EXPERIMENTAL STUDY OF ENRICHING DICKITE AND NACRITE FROM KAOLINS

It is more or less difficult to detect minor compoitions of dickite and nacrite in a mix-ture of kaolins.This paper is to introduce a method for separating and enriching dickite andnacrite from kaolins by the means of HF treatment.The study shows that dickite and nacrite canbe enriched by proper HP attack and then could be identified in detail from kaolins,even thoughthey are in minor compositions of bulk samples. The experiment also illustrates that nacrite is ofthe most stability mineral in kaolins while dickite is stabler than kaolinite according to the result ofthen HF attack.