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2 696 989

(13)

(51)

IPC

C22B34/34(2006-01-01)

C22B61/00(2006-01-01)

C22B1/04(2006-01-01)

C22B3/12(2006-01-01)

(21) (22)

Application

2018136245, 2018-10-15

(24)

Start date

2018-10-15

(22)

Actual filing date

2018-10-15

(45)

Published

2019-08-08

(72)

Inventor

Antropova Inna GermanovnaKhomoksonova Darya PetrovnaAlekseeva Ekaterina Nikolaevna

(73)

Holder

Federalnoe Gosudarstvennoe Byudzhetnoe Uchrezhdenie Nauki Bajkalskij Institut Prirodopolzovaniya Sibirskogo Otdeleniya Rossijskoj Akademii Nauk So Ran)

METHOD FOR PROCESSING MOLYBDENITE-CONTAINING CONCENTRATES Russian patent published in 2019 - IPC C22B34/34 C22B61/00 C22B1/04 C22B3/12

Abstract RU 2696989 C1

FIELD: metallurgy.

SUBSTANCE: invention relates to non-ferrous metallurgy, particularly, to extraction of molybdenum and rhenium from sulphide molybdenum-containing concentrates. Method of processing molybdenite concentrates involves preliminary mixing of concentrate with one of cheap magnesium-containing mineral rocks - magnesite MgCO₃ or brucite Mg(OH)₂ in amount of 110 % of stoichiometrically required for complete binding of molybdenum, rhenium and sulphur to non-volatile compounds. Then performing charge oxidation annealing at 600 °C for for 60 minutes and resulted stub is leached with solution of alkali metal carbonate.

EFFECT: technical result is higher efficiency of method for oxidizing firing rhenium-containing molybdenite concentrates.

1 cl, 1 dwg, 3 ex

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RU 2 696 989 C1

Authors

Antropova Inna Germanovna

Khomoksonova Darya Petrovna

Alekseeva Ekaterina Nikolaevna

Dates

2019-08-08—Published

2018-10-15—Filed