选择性萃取被定义为优选出高选择性的萃取剂实现多萃钒少萃铁或不萃铁，并可

Selective extraction is preferably defined as a highly selective extraction of vanadium extraction agent multi little or no extraction of iron extraction of iron, and can increase a washing step between the extraction and stripping, in order to achieve complete separation of vanadium and iron.

Selective extraction is defined as the preferred highly selective extractor to achieve a multi-extract less extract or no iron, and can add a washing process between extraction and anti-extraction, thus achieving a complete separation of radon and iron.

Selective extraction is defined as the optimization of highly selective extractant to extract more vanadium and less iron or no iron, and a washing process can be added between extraction and stripping to realize the complete separation of vanadium and iron.<br>