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就黑钨精矿的综合利用,本文提出了萃取提钪的新工艺流程,并做了10公斤/槽规模的扩大全流程试验。结果表明,该流程处理黑钨精矿是有效而可行的,它具有流程短,工艺简单,一次酸作业即可实现钨和钪的有效分离;不受精矿钙含量的限制,钨矿物分离程度高;酸解液直接萃取可以制取纯度99.5％的Sc_2O_3,实现了钪的有效回收;粗钨酸用现行生产工艺可制取纯净的钨化合物;钽、铌、锡富集于残渣,有利于回收利用。
With regard to the comprehensive utilization of wolframite concentrate, a new technological process of extracting and extracting scandium was proposed in this paper, and an all-encompassing test of 10 kg / t of scale was conducted. The results show that this process is effective and feasible for the treatment of wolframite concentrate. It has the advantages of short process flow, simple process, effective separation of tungsten and scandium by one acid operation, no limitation of calcium content of concentrate, High; the direct extraction of acid solution can produce Sc_2O_3 with a purity of 99.5%, thereby realizing the effective recovery of scandium; the crude tungsten acid can be used to produce pure tungsten compounds by using the current production technology; the tantalum, niobium and tin are enriched in the residue, recycle and re-use.