Optimization of Preparation Process of High-Purity Niobium Hydroxide for Niobium Oxalate Synthesis AITranslate

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Chinese Library Classification Number:TF841.6[冶金工程—有色金属冶金]

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The preparation process was optimized of high-purity niobium hydroxide from high-purity nio-bium solution(H₂NbF₇ solution)for niobium oxalate synthesis.The results demonstrate that under the optimal process conditions,including a feed solution concentration(Nb₂O₅ content)of 120 g/L,ammonia neutralization time of 5 h,blowing time of 16 h,drying temperature of 60℃,and drying time of 5 h,the prepared niobium hydroxide product exhibits excellent quality with a Nb₂O₅ content exceeding 73%and superior solubility in oxalic acid solution.In addition,the process operates stably.