中文摘要：

在 KOH 和 H2O 系统的 Ta2O5， Nb2O5 和他们的混合的溶解行为被调查。L9 (34 ) 直角的设计被用来在钽的溶解率上学习反应温度，到 Ta2O5 的 KOH 的集体比率，和反应时间的效果。钽的溶解率上的反应温度的效果比另外的因素的大得多，这被发现。因素的实验的结果证明 Ta2O5 主要在低温度被转变成不可溶解的钾 tantalate ( 350 他试验性的结果证明那纯铜盐水合物在 6.0 的批评 pH 价值下面被准备，而粉末转弯是盐在 pH 价值上与 NH3 相结合的复杂的铜。可能的化学公式， CuC2O4tural 进化是相对慢的，产生谷物尺寸是 relativ 鴌?鴌？？

英文摘要：

The dissolution behaviors of Ta2O5,Nb2O5 and their mixture in KOH and H2O system were investigated.A L9（34） orthogonal design was used to study the effects of reaction temperature,mass ratio of KOH to Ta2O5,and reaction time on the dissolution rate of tantalum.It was found that the effect of reaction temperature on the dissolution rate of tantalum was much greater than that of the other factors.The results of factorial experiments showed that Ta2O5 was mainly transformed into insoluble potassium tantalate at low temperature（350 ℃） and transformed into soluble potassium tantalate at high temperature（450 ℃）.The insoluble potassium tantalate was analyzed by XRD,which was proved to be KTaO3.Differently,almost all Nb2O5 was transformed into soluble potassium niobate at 350-450℃.As for the mixture of Ta2O5 and Nb2O5,the dissolution rate of tantalum increased and the dissolution rate of niobium decreased as an interaction existed between niobium and tantalum.And increasing the mole ratio of Nb2O5 to Ta2O5 in the mixture was beneficial to the dissolution of both Ta2O5 and Nb2O5.In addition,the mechanism of the interaction between niobium and tantalum was also investigated through phase and chemical analysis.