Research the Tail Gas Treatment of Baotou Rare Earth Concentrate by Concentrated Sulfuric Acid Roasting

Baotou rare earth concentrate by concentrated sulfuric acid roasting is the main process method of Baotou rare earth concentrate decomposition.In the concentrated sulfuric acid roasting,it will produce mass tail gas,such as rich sulfuric acid,sulfurous acid,hydrofluoric acid and another acid gas.The article discusses traditional process of tail gas treatment,and proposal the new technology which of multistage concentrated sulfuric acid roasting and tail gas subsection recovery treatment.