METAL EXTRACTION METHOD Russian patent published in 2008 - IPC C22B3/20 

FIELD: processes and equipment for extracting metals out of solutions, mainly separation of metals such as lithium, aluminum, chrome, manganese, iron, cobalt, nickel, molybdenum, cadmium, vanadium and others from raw material with low content of useful components, particularly from sea water and passing waters of gas and oil fields.

SUBSTANCE: method comprises steps of dissolving polymer whose macromolecules are uniformly distributed in volume of solution; providing interaction of metal and polymer in solution for forming complex; extracting polymer complex out of solution by sorption or by electro-osmosis in order to produce metal in the form of metal-polymer complex; decomposing complex due to action of complexion agent, acid, salt or alkali for extracting metal in the form of salt solution; regenerating polymer remained after metal extraction by means of other solution having affinity to said polymer; again using polymer.

EFFECT: usage of raw materials with low concentration of metal, possibility for using wide assortment of sorbents, extracting metal out of media contaminated with suspended matters, complete extraction of metal without contamination of environment, prevention of soil contamination caused by linking of heavy metal with polymer.

3 cl, 9 ex