Carbothermal method of producing cobalt-boron and/or nickel-boron

US4623386A · kind A · utility

Assignee

• GfE Gesellschaft fur Elektrometallurgie mbH · DE

Inventors

• Reinhard Hahn · Vilsheim, DE
• Hans-Joachim Retelsdorf · Zirndorf, DE
• Rudolf Fichte · Nuremberg, DE
• Siegfried Sattelberger · Nuremberg, DE

Key dates

• Filing date: Dec 13, 1985
• Grant date: Nov 18, 1986
• Expiry date: Dec 13, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C1/023
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method of making cobalt-boron and/or nickel-boron alloys in a low-shaft electrical furnace wherein the burden or charge has a height of at least 500 mm and at least a portion of its carbon carrier consists of wood chips which are carbonized to wood charcoal during the process so that the wood charcoal which is produced can adsorb volatilized boron compounds and tap them so that they do not escape. The volatilized boron compounds thus tapped are carried to the reduction zone by the wood charcoal so that a high yield is obtained and the product has a low aluminum content.