Effects of Roasting Process on Extraction of Vanadium from Stone Coal at Fangshankou

Abstract

The influence of roasting temperature,time,atmosphere and organics in stone coal,percentage of additive (NaCl),particle size of stone coal sample on leaching rate of vanadium are studied.Experiment results show that the leaching rate of vanadium in roasted stone coal in water is lower when mass fraction of calcium in stone coal is higher.After being leached with water,it is releached with 1% sulphuric acid,the leaching rate of vanadium can be increased by 10%.