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2 565 174

(13)

(51)

IPC

C01G33/00(2006-01-01)

C01G35/00(2006-01-01)

C22B3/04(2006-01-01)

C22B3/26(2006-01-01)

C22B34/20(2006-01-01)

C22B34/24(2006-01-01)

(21) (22)

Application

2013130384/05, 2013-07-02

(24)

Start date

2013-07-02

(22)

Actual filing date

2013-07-02

(45)

Published

2015-10-20

(72)

Inventor

Gerasimenko Aleksandr SergeevichKozlov Nikolaj Anatol'EvichNefed'Ev Anatolij SergeevichPetrov Denis AleksandrovichTurnaev Anton MikhajlovichShinkarkin Nikolaj Leonidovich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Ehlektroliznyj Khimicheskij Kombinat"

METHOD OF PRODUCING OF NIOBIUM AND TANTALUM OXIDES FROM ORE CONCENTRATES Russian patent published in 2015 - IPC C01G33/00 C01G35/00 C22B3/04 C22B3/26 C22B34/20 C22B34/24

Abstract RU 2565174 C2

FIELD: metallurgy.

SUBSTANCE: invention relates to hydrometallurgy, in particular to the technology of processing of ore concentrates of niobium and tantalum. The method of producing of niobium and tantalum oxides from columbite (tantalite) concentrate includes its opening by ammonium fluorides and sulphuric acid, subsequent release, purification and separation of niobium and tantalum salts by extraction. Note that the concentrate is fluorinated by melting of a mix of fluorides of ammonium at a temperature of 110-240°C within 0.5-5 hours, the discharged gases are absorbed by water with producing of an ammonia solution.

EFFECT: invention provides the cost-saving and low-waste method of processing of niobium and tantalum ore concentrates, and also low specific consumption of chemicals.

4 cl, 1 dwg, 2 ex

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RU 2 565 174 C2

Authors

Gerasimenko Aleksandr Sergeevich

Kozlov Nikolaj Anatol'Evich

Nefed'Ev Anatolij Sergeevich

Petrov Denis Aleksandrovich

Turnaev Anton Mikhajlovich

Shinkarkin Nikolaj Leonidovich

Dates

2015-10-20—Published

2013-07-02—Filed