REGENERATION METHOD OF MOLYBDENUM FROM WASTE SOLUTION FOR ETCHING OF MOLYBDENUM CORE IN MANUFACTURING OF LIGHT BULBS AND ELECTRONIC DEVICES AND INSTALLATION FOR ITS IMPLEMENTATION Russian patent published in 2009 - IPC C22B34/34 C22B3/22 C22B3/02 C23F1/46 

FIELD: metallurgy.

SUBSTANCE: group of inventions relates to extraction of molybdenum from acid liquors, containing mixture of nitric and sulfur acid and molybdenum in wide range of concentration and also other admixtures and can be used at regeneration of molybdenum from waste colution for etching of molybdenum cores in manufacturing of electric bulbs and electronic devices and solutions of hydrometallurgy manufacturing. Extraction of molybdenum is implemented from solutions with diferent content in it of molybdenum. Acid solution is treated by electromagnetic field with frequency selected in the area of mid-range radio waves, formed water is driven off, laid-down sediment is filtered. Extracted acid is returned into etching process. Installation includes reactor block, filtration unit, tanks for solutions, pipelines, stop and variable valves. Reactor block includes reactor, electromagnetic field generator, inductor and matching device. Inductor is located inside or outside thru reactor. Installation additionally contains rectifying still for distillation of water, direct connected to reactor.

EFFECT: increasing of extraction ratio subject to circulation of colutions, process is ecologically safe, industrial sewages are not formed.

7 cl, 1 dwg, 2 tbl, 2 ex