The new process for extracting vanadium from the coal- fired ash (or stone coal ) acid leaching-intermediate salt method proposed by Zhejiang Research Institute of Chemical Industry is shown in the following figure. Figure Acid leaching - intermediate salt method for vanadium extraction process The main technical and economic indicators obtained in the semi-industrial test are: V 2 O 5 leaching rate 93.69%, intermediate salt recovery rate 99.07%, extraction rate 98.10%, stripping rate 98.16%, ammonium metavanadate precipitation rate 99.0%, V 2 O 5 total recovery rate is greater than 80%. Product quality in line 98 metallurgical requirements, 30.46t sulfuric acid consumption per tonne of product, P204 7.5kg, TBP60kg, kerosene 60kg, ammonia 9.09t, 20T of steam, electricity 8000kW · h, 48 byproduct ammonium alum. FR PE Sheath And Insulation Compounds Fibre Optics Cable Soft PE Sheath Compound,FR Soft PE Sheath Compound,Flame Retandant Sheath Compound,Fibre Optics Cable PE Sheath Compound Jiangsu Carrett Technology Co., LTD , https://www.jscarrett.com