Currently the main technology key of emulsion liquid membrane is the stability and membrane bursting technology. It’s different required for the stability of the liquid membrane extraction and bursting membrane phase , the former one requires a high stability while the latter one want a low stability. Currently it’s difficult to control the stability and longevity; rupture technology and organic reuse and recycling phases within phase related, which directly affect the economic effects of liquid film method, the effect of different formulations of liquid membrane rupture is not the same, and therefore rupture technology also needs to be tested. For the study of surfactant and a carrier, but also directly affect the technical and economic effects of liquid film. In addition, industrial wastewater treatment, since the dissolution of membrane components may cause secondary pollution, these problems can be in research and development in the film is further resolved.

 

With crude sodium tungstate or tungsten concentrates obtained tungsten fine mud alkali fusion dissolved in water as feed solution pH adjusted to 8-9 after removing impurities of silicon, without removal of phosphorus, arsenic, molybdenum at room temperature for a laboratory directly Intermittent Liquid Membrane ,, according to the orthogonal design of optimum operating conditions, within 5min inner aqueous phase directly from ammonium paratungstate (APT) crystallization. Extraction rate of 99.85%, the purity level of product standards. Article on various factors depth study, proposed a level of continuous countercurrent flow, low cost, it is a promising new approach.