Ball milling apparatus

US5383615A · kind A · utility

Assignee

• The Australian National University · AU

Inventors

• Andrzej Calka · North Canberra, AU
• Barry Ninham · Belconnen, AU

Key dates

• Filing date: May 26, 1992
• Grant date: Jan 24, 1995
• Expiry date: May 26, 2012

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22F2009/041
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A ball mill for use in mechanical alloying and grinding comprising a plurality of ferromagnetic balls within a spherical or cylindrical chamber or cell of a paramagnetic material. The chamber has a substantially horizontal axis of rotation. At least one magnet is mounted outside the chamber to produce a magnetic field within the chamber. The magnet is physically moveable, relative to the chamber, between a plurality of locations on an arc centered on the axis of rotation of the chamber.