Method of making a grate plate
AssigneeKrupp Polysius AG
InventorsOtto Heinemann, Hermann Niemerg, Norbert Bredenhöller, Ludger Brentrup
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Abstract
A method of forming a grate plate for installation as part of a grate assembly in which free flowing abrasive material is supported for movement along a path while treatment gas flows upwardly through such material. The grate plate includes a relatively thin carrier plate modified to present a highly wear resistant upper surface, the carrier plate having slots formed therein through which treatment gas flows for passage through the material. The method is one which is economical even though the carrier plate itself is formed from relatively expensive material.
Claims16
A method of making a grate plate assembly for installation in grate apparatus for heat exchange between a treating gas and a freely-flowable abrasive material movable along a path defined by said grate apparatus, said method comprising forming a material carrier plate from rolled steel sheet material having at one side thereof a supporting surface for said abrasive material;
- modifying said carrier plate to harden said supporting surface to an extent sufficient to increase resistance to wear resulting from movement of said abrasive material across said surface;
- forming a frame structure;
- supporting said carrier plate from below by supports spanning said frame structure;
- securing said supports to said carrier plate beneath the latter and to said frame structure in such manner as to provide a passage between each of said supports and said carrier plate;
- and
- forming through said carrier plate a plurality of gas flow slots spaced from one another longitudinally of the direction of said path and extending transversely of the direction of said path, each of said gas flow slots being in communication with a respective one of said passages.
Dependencies are inferred from the claim text.