Hatch Ltd.

Sean Southall

Bert O Wasmund

Maciej Urban Jastrzebski

Afshin Sadri

Robert J Veenstra

Terry Gerritsen

John Andrew Ferguson Shaw

Ehsan Shameli

Michael Parravani

Roberto Venditti

Andrei Kepes

Bruce Uyeda

Frank Stober

Felim Patrick McCaffrey

Nils W Voermann

Maurizio Darini

Michael Trovant

Weiguo Wang

Blair Nakatsu

Anthony Porretta

A furnace is provided suitable for metallurgical processes, comprising at least one section comprised of refractory bricks with an outer shell plate adjacent to the refractory bricks, including exterior bricks whose external faces adjacent the shell plate define gaseous media cooling channels extending along the exterior of the refractory bricks between them and the shell plate. The furnace further comprises cooling plates within the cooling channels and joints between the successive courses of bricks. Advantageously, the conductivity of the cooling plates is at least 5 times the conductivity of the refractory lining into which it is inserted. Suitable materials include copper and copper-based alloys, brasses, bronzes, cast irons, aluminum alloys, silver, high-temperature steels, refractory metals and their alloys, graphite, silicon carbide, and aluminum nitride.

Furnace with refractory bricks that define cooling channels for gaseous media

Various systems and methods for monitoring the level of a feed material layer in a metallurgical furnace are described. At least one non-contact sensor is used to sense a distance between the feed layer and a reference position. A process controller linked to the sensor provides a control signal based upon the sensed distance. The control signal may be used to control various factors in the operation of the metallurgical furnace.

Measurement of charge bank level in a metallurgical furnace

A system for controlling emissions of gas and dust during transfer of a hot feed material from a movable transfer container to a stationary feed bin of a furnace. The system includes an upper duct section which is associated with the movable transfer container, and a lower duct section associated with the feed bin. The lower duct section is attached to a main collection duct with a dust collection fan. The two duct sections are brought into close proximity with one another when the transfer container is brought into position for discharge to the feed bin, so as to form a continuous gas passage throughout the duct sections.

Dust collection system for calcine transfer container

A system is disclosed for lowering ('slipping') and/or raising ('back slipping') electrodes relative to an electrode column. The system includes an electrode column having at least one slipping sleeve and a power clamp, each of which apply a radial clamping force to the electrode. The magnitudes of the clamping forces are selected such that application of a downwardly directed axial force on the one or more slipping sleeves, in combination with the weight of the electrode, are sufficient to overcome the resistive force of the power clamp, resulting in downward movement of the electrode without release of the clamping forces. Electrode columns having two movable slipping sleeves are also capable of raising the electrode relative to the furnace without release of the clamping forces.

Electrode column

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Acton, CA, United States of America

Sean Southall