Leco Corporation

Ward S Kaler

Larry S O'Brien

An ash fusion analyzer for determining the ASTM defined fusion temperatures of coal and coke ash includes a furnace chamber with a viewport. A rotatable sample-supporting platform is positioned within the chamber such that samples on the platform are viewable through the viewport. An optical system is aligned with the viewport for directing images of the moving samples onto a solid state line scan array. A microprocessor is coupled to the array for periodically sampling data from the array and calculating shape information relating to the samples.

Ash fusion system

The specification discloses an analyzer having a furnace defining a furnace chamber and including a floor with an aperture communicating with the chamber. A sample-supporting platform is provided and movable between an analyzing position within said furnace chamber and a loading position below the level of, and out from under, the furnace. A plurality of heating elements extend into the furnace chamber and are insulatively sealed therein by a pair of slotted members which cooperate to reduce airflow along the elements.

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Benton Harbor, MI, United States of America

Ward S Kaler