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2 086 675

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C1

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IPC

(21) (22)

Application

94030108/02, 1994-08-11

(22)

Actual filing date

1994-08-11

(45)

Published

1997-08-10

(72)

Inventor

Tolstoguzov N.V.Proshunin I.E.Gumennyj V.F.Nokhrina O.I.

(73)

Holder

Sibirskaja Gosudarstvennaja Gorno-Metallurgicheskaja Akademija

METHOD OF MANUFACTURING BRIQUETS FOR DIRECTLY ALLOYING STEEL WITH MANGANESE Russian patent published in 1997 - IPC

Abstract RU 2086675 C1

FIELD: ferrous metallurgy. SUBSTANCE: manganese mineral is first mixed with fired dolomite at ratio (CaO+1.4MgO)/Mn 9.5-1.0, whereupon is baked under oxidizing atmosphere to produce mix of manganite-maroquite concentrate which is further mixed with aluminium-silicon-manganese-iron alloy and a binder and briquetted. According to invention, mix of concentrate is baked in oxidizing atmosphere at 920-950 C for 1-2 h and obtained concentrate is cooled in the temperature range 920-680 C with rate 100-120 C/h. Method may be used for deoxidation and alloying of steel with manganese. EFFECT: increased yield of manganese and decreased hygroscopicity of briquets. 2 cl, 3 tbl

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RU 2 086 675 C1

Authors

Tolstoguzov N.V.

Proshunin I.E.

Gumennyj V.F.

Nokhrina O.I.

Dates

1997-08-10—Published

1994-08-11—Filed

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