METHOD FOR OBTAINING OF HIGH-PURITY FERROBORON FOR PRODUCING OF NEODYMIUM-IRON-BORON MAGNETIC ALLOYS Russian patent published in 2004 - IPC

Abstract RU 2242529 C2

FIELD: foundry, non-ferrous and alloy metallurgy.

SUBSTANCE: method involves mixing boron-bearing material with powdered aluminum and providing reduction of reaction mixture in chill mold outside furnace; before mixing with powdered aluminum, roasting boron-bearing material in air at temperature of 300-5000C for 3 hours; using boron-bearing material, such as mixture of boric acid with powdered iron oxide, in the ratio of 1:1.

EFFECT: improved quality of ferroboron, reduced production cost owing to usage of non-expensive boron-bearing material and powdered aluminum produced at enterprise, reduced power consumption owing to employment of standard processing equipment not requiring additional retooling.

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Authors

Trikhaev S.V.

Stukalov V.F.

Beljaev I.V.

Kutepov A.V.

Fomin V.V.

Kim A.K.

Dates

2004-12-20Published

2002-12-30Filed