| 简介 |
FIELD : metallurgy.SUBSTANCE : invention can be used for extraction, concentration and cleaning of molybdenum from companion elements (Fe, Cu, Zn, Ni, Co, Al, Sn, Sb, rare-earth elements, etc.) at processing of different liquid and solid molybdenum-containing wastes and middling products. Extraction method of molybdenum from diluted acid solutions containing companion elements of molybdenum involves molybdenum deposition in the form of its salt. Besides, deposition with molybdenum purification is performed in the form of its cesium salt of 12-molybdophosphoric acid containing the following : CsHPMoO·nHO (x=0-1, n=9-12). Deposition is performed at heating up to 40-80°C by subsequent addition of orthophosphate-ion in the form of soluble phosphate or orthophosphoric acid, strong acid, for example sulphuric acid or sodium hydroxide up to pH 1-3 and soluble cesium salt, including mother solutions obtained during leaching of pollucite.EFFECT : increasing extraction degree of molybdenum from process and effluent solutions.2 dwg, 3 ex |
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