Method and apparatus for removal of gaseous, liquid and particulate contaminants from molten metals

Patent · Mon Nov 21 23:00:00 EST 1988

OSTI ID:6231724

Hobson, D O; Sikka, V K

This patent describes a device for removing contaminants from a molten metal composition, the contaminants being characterized in having less electrical conductivity than the molen metal, comprising a body of toroidal configuration having an outer wall and a toroidal cavity, the toroidal body having inlet and outlet ends adapted to receive and discharge a stream of the molten metal composition and means for applying a magnetic field to the molten metal composition within the toroidal cavity which magnetic field simultaneously induces an electric current which flows perpendicular to the magnetic field so as to impose a force on the molten metal composition at right angles to a plane containing the magnetic field and current flow direction, thereby causing an increase in the apparent density of the molten metal component of the composition in the direction of the force while the contaminants contained in the composition move in a direction opposite to the imposed force.

• Assignee: Dept. of Energy, Washington, DC
• Patent Number(s): US 4786320
• OSTI ID: 6231724
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
CURRENTS
DEGASSING
DENSITY
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELEMENTS
FLUIDS
IMPURITIES
LIQUID METALS
LIQUIDS
MAGNETIC FIELDS
METALS
PARTICLES
PARTICULATES
PHYSICAL PROPERTIES
PURIFICATION
REMOVAL
SEPARATION PROCESSES