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2 477 329

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(51)

IPC

C22B34/34(2006-01-01)

C22B3/46(2006-01-01)

(21) (22)

Application

2012100922/02, 2012-01-13

(24)

Start date

2012-01-13

(22)

Actual filing date

2012-01-13

(45)

Published

2013-03-10

(72)

Inventor

Maslov Leonid PavlovichMindrina Anastasija Evgen'EvnaL'Vovskij Aleksandr Igorevich

(73)

Holder

Federal'Noe Gosudarstvennoe Bjudzhetnoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Gosudarstvennyj Universitet Tonkikh Khimicheskikh Tekhnologij Imeni M.V. Lomonosova"

EXTRACTION METHOD OF MOLYBDENUM FROM DILUTED ACID SOLUTIONS OF COMPLEX COMPOSITION Russian patent published in 2013 - IPC C22B34/34 C22B3/46

Abstract RU 2477329 C1

FIELD: metallurgy.

SUBSTANCE: invention can be used for extraction, concentration and cleaning of molybdenum from companion elements (Fe³⁺, Cu²⁺, Zn²⁺, Ni²⁺, Co²⁺, Al³⁺, Sn⁴⁺, Sb³⁺, rare-earth elements³⁺, 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: Cs_3-xH_xPMo₁₂O₄₀·nH₂O (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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RU 2 477 329 C1

Authors

Maslov Leonid Pavlovich

Mindrina Anastasija Evgen'Evna

L'Vovskij Aleksandr Igorevich

Dates

2013-03-10—Published

2012-01-13—Filed