论文部分内容阅读
研究了石煤空白焙烧料NaOH溶液浸出过程中液固比、NaOH溶液初始浓度、反应搅拌速率、矿石粒径、温度对浸出速率的影响,确定了石煤提钒碱浸过程动力学方程式,计算了反应的表观活化能。结果表明:液固比、反应搅拌速率对浸出速率的影响不大,NaOH溶液初始浓度、矿石粒径、浸出温度对浸出速率的影响显著;V2O5的浸出动力学适用于收缩未反应芯模型,浸出反应服从化学反应控制过程;根据Ar-rhenius公式,使用曲线拟合法,近似求得该反应表观活化能约为58.5k.Jmol-1,进一步表明该反应属于化学反应控制。
The effects of liquid-solid ratio, initial concentration of NaOH solution, reaction stirring rate, ore particle size and temperature on the leaching rate during the leaching process of NaOH roasting solution were studied, and the kinetic equation of vanadium-alkali leaching process was established. The apparent activation energy of the reaction. The results show that the ratio of liquid to solid and reaction agitation have little effect on the leaching rate. The initial concentration of NaOH solution, the size of ore and the leaching temperature have significant effects on the leaching rate. The leaching kinetics of V2O5 is suitable for the shrinkage of unreacted core. According to the Ar-rhenius formula, the curve fitting method was used to approximate the apparent activation energy of the reaction to be about 58.5k.Jmol-1, further indicating that the reaction belongs to the chemical reaction control.