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2 061 076

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C1

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IPC

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Application

93018572/02, 1993-04-06

(22)

Actual filing date

1993-04-06

(45)

Published

1996-05-27

(72)

Inventor

D'Jakonova L.A.Zajko V.P.Karnaukhov V.N.Voronov Ju.I.Iskhakov F.M.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Ehlektrometallurgicheskij Kombinat"

PROCESS OF PREPARATION OF MOLYBDENUM OXIDE CONCENTRATE Russian patent published in 1996 - IPC

Abstract RU 2061076 C1

FIELD: ferroalloy metallurgy. SUBSTANCE: sulphide molybdenum raw material is calcinated in fluidized bed furnace. Fluidized layer is created by supply of air and of waste gas of multihearth furnace. Temperature of layer is controlled by change of quantitative ratio of air and waste gas of multihearth furnace with their total flow rate being constant. Produced calcinated products are roasted in multihearth furnace with production of oxide concentrate containing 0.05-0.18 per cent by mass of sulphur suitable for subsequent smelting of ferromolybdenum. EFFECT: improved efficiency of process. 1 tbl

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RU 2 061 076 C1

Authors

D'Jakonova L.A.

Zajko V.P.

Karnaukhov V.N.

Voronov Ju.I.

Iskhakov F.M.

Dates

1996-05-27—Published

1993-04-06—Filed

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