Preparation and Consolidation Technology of Vanadium Slag Pellets

In order to solve the production problem of poor performances of vanadium slag pellets during the process of sodium salt roasting and hot water leaching of vanadium slag pellets,the technology of pelletizing and drying for vanadium slag fine powder was studied.The laboratorial and industrial test results show that the pellets could meet the technical requirements of sodium salt roasting at the following conditions:solution containing binder A as the additive for pelletizing,85~95℃ of reaction temperature for 3~4 h,more than 80% of particles below 124 μm for vanadium slag fine powder,10~15 min of wet mix,1.5~2.0 t/h of feed rate,6%~8% of moisture for wet pellets,ladder drying system(100~150℃ for 20 min,250~300℃ for 20 min),less than 0.50% of moisture and 45~60 N/piece of compressive strength for dried pellets.