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2 626 257

(13)

C1

(51)

IPC

C22B3/08(2006-01-01)

C22B23/00(2006-01-01)

C22B11/00(2006-01-01)

(21) (22)

Application

2016118601, 2016-05-13

(24)

Start date

2016-05-13

(22)

Actual filing date

2016-05-13

(45)

Published

2017-07-25

(72)

Inventor

Kalashnikova Mariya IgorevnaSaltykov Pavel MikhajlovichSaltykova Ekaterina Gennadievna

(73)

Holder

Publichnoe Aktsionernoe Obshchestvo Kompaniya Nikel"

PROCESSING METHOD OF SULPHIDE PYRRHOTINE-PENTLANDITE CONCENTRATES CONTAINING PRECIOUS METALS Russian patent published in 2017 - IPC C22B3/08 C22B23/00 C22B11/00 

Abstract RU 2626257 C1

FIELD: metallurgy.

SUBSTANCE: for carrying out the leaching process of pentlandite-pyrrhotite concentrate at a temperature of 90-105°C with the feeding of sulfuric acid and sodium sulfate into the autoclave, the oxygen partial pressure is increased from more than 0.5 to 1.5 MPa. The oxidated pulp is delivered for separation to solid and liquid phases. The metal containing solution is sent for processing, and solid phase - for floatation, during it sulfur sulphide concentrate and tails of dump quality are produced, to them maximum 5% of non-ferrous and maximum 5-15% of precious metal are transferred. The method is applicable for the leaching of pyrrhotite-pentlandite concentrates at any nickel content in the range of 0.5-20%.

EFFECT: intensification of the leaching process.

2 cl, 3 tbl, 3 ex

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RU 2 626 257 C1

Authors

Kalashnikova Mariya Igorevna

Saltykov Pavel Mikhajlovich

Saltykova Ekaterina Gennadievna

Dates

2017-07-25—Published

2016-05-13—Filed

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