关键词: 鳞片石墨;提纯;氢氟酸法;碱酸法;固定碳含量

Abstract: The chemical purification methods were used according to the properties of the flotation concentrates of Ancuabe graphite ore in Mozambique.The appropriate reaction conditions were determined by the experimental study of the amount of alkali, roasting temperature, the type and amount of acid, reaction temperature and time, and other factors.The results show that the flake graphite of grade 95.99％ is purified to 99.98％ by hydrofluoric acid method, and purified to 99.96％ by alkali acid method.

Key words: flake graphite;purification;hydrofluoric acid method;alkali acid method;fixed carbon content