He Wenyi, Wang Xiaojiang, Peng Yi, Yin Danfeng. Study on the Preparation Technology of High-density APV[J]. IRON STEEL VANADIUM TITANIUM, 2012, 33(2): 10-14.
Citation:
He Wenyi, Wang Xiaojiang, Peng Yi, Yin Danfeng. Study on the Preparation Technology of High-density APV[J]. IRON STEEL VANADIUM TITANIUM, 2012, 33(2): 10-14.
He Wenyi, Wang Xiaojiang, Peng Yi, Yin Danfeng. Study on the Preparation Technology of High-density APV[J]. IRON STEEL VANADIUM TITANIUM, 2012, 33(2): 10-14.
Citation:
He Wenyi, Wang Xiaojiang, Peng Yi, Yin Danfeng. Study on the Preparation Technology of High-density APV[J]. IRON STEEL VANADIUM TITANIUM, 2012, 33(2): 10-14.
1. Panzhihua Group Research Institute Co., Ltd., State Key Laboratory for Comprehensive Utilization of Vanadium and Titanium Resources, Panzhihua 61700, Sichuan, China;
2. Vanadium Products Factory, Pangang Group Steel Vanadium & Titanium Co., Ltd., Panzhihua 617023, Sichuan, China
A new process to prepare high-density APV is introduced and the effects of TV concentration,pH value,stirring rate,temperature before adding reagent and acid,ammonium adding coefficient and seed crystal on bulk density and precipitation ratio of APV are investigated.The results show that following adding seed crystal with its mass more than 1/50 time that of TV and（NH4）2SO4 with its mass more than 1.5~2.5 times that of TV to the solution containing 20~30 g/L of vanadium between 60~85 ℃,and adjusting pH value of the solution to 2.1~2.4,the solution is precipitated for 40 min at 350 r/min and 20 min at 200 r/min in boiling water bath under 95 ℃.Precipitation ratio and bulk density of dried APV can reach above 98.5% and 0.95 g/cm3 respectively.As a result,V2O5 powder contains more than 98.5% of V2O5 and less than 0.10% of Na2O after APV is roasted.
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