Hearth arrangement for melting furnace

Details Hearth arrangement for melting furnace Hearth arrangement for melting furnace

F - Mech Eng,Light,Heat,Weapons

23

G

49/53, 39/89

F23G 5/14 (2006.01) C03B 5/16 (2006.01) F23G 5/00 (2006.01) F23G 5/08 (2006.01) F23J 9/00 (2006.01) F27B 3/00 (2006.01) F27B 3/04 (2006.01) F27B 3/18 (2006.01) F27B 3/22 (2006.01) F27D 1/00 (2006.01) F27D 3/00 (2006.01) F27D 99/00 (2010.01) F27B 3/12 (2006.01)

Patent

CA 2029118

A hearth arrangement for a furnace which melts refuses carried on the hearth arrangement comprises a plurality of hearth blocks arranged like a stair. The hearth blocks are inclined stepwise in a refuse carrying direction and each hearth block has a width direction perpendicular to the refuse carrying direction. Each hearth block is divided into two block elements in the width direction of the hearth block and the two block elements are joined to each other by springs which exerts a biasing force on the block elements in the width direction of the hearth block. A clearance is formed between each two adjacent hearth blocks to tolerate heat expansion of the hearth blocks. Each block has a protuberance extending over a next hearth block located in the ash carrying direction such that the ash does not flow into the clearance between the hearth blocks. A convex portion is formed on a contacting plane of one block element and a concave portion is formed in a contacting plane of the other block element such that the convex portion engages with the concave portion to ensure a tight engagement of two block elements.

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