EXTRACTION OF FE, MN, NI, CO, CU, AL BY SULPHATIZATION AND HYDROCHLORINATION FROM CAKE OBTAINED AFTER SODA SINTERING AND LEACHING OF TUNGSTEN CONCENTRATE Russian patent published in 2019 - IPC C22B3/00 C22B34/36 C22B47/00 

Abstract RU 2695689 C1

FIELD: metallurgy.

SUBSTANCE: invention relates to hydrometallurgy of non-ferrous metals and can be used in processing concentrates, industrial products and solid wastes containing metals. Metal ions are extracted from cake obtained after sintering and leaching of tungsten concentrate by sulphatising calcination, which is carried out by oleum at L:S = 1:1, temperature = 250–300 °C and time 4 hours followed by hydrochlorination of sulphate sintered mass 2 n HCl solution, 240 g/l NaCl.

EFFECT: method allows intensifying the leaching process with more complete extraction of metals into the solution.

1 cl, 2 dwg, 5 tbl

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RU 2 695 689 C1

Authors

Voropanova Lidiya Alekseevna

Kokoeva Natalya Borisovna

Gagieva Fatima Akimovna

Dates

2019-07-25Published

2019-04-03Filed