Refractory hard metal containing tiles for aluminum cell...

Details Refractory hard metal containing tiles for aluminum cell... Refractory hard metal containing tiles for aluminum cell...

C - Chemistry, Metallurgy

25

C

204/195.3

C25C 3/08 (2006.01) C04B 35/48 (2006.01) C04B 35/58 (2006.01)

Patent

CA 1254856

61293-135 REFRACTORY HARD METAL CONTAINING TILES FOR ALUMINUM CELL CATHODES Abstract of the Disclosure This invention relates to electrolytic reduction cells for aluminum production wherein tiles have been placed upon the cathode surfaces to improve the cell operation. These tiles have aluminum- wettable surfaces, which reduce electrical losses and increase cathode life. The tiles are produced from a mixture of refractory hard metal (RHM), a thermosetting resin, carbonaceous fillers and carbonaceous additives. The tiles are physically formed, polymer- ized and/or cross linked, and carbonized so that they can be inser- ted into a cell. The tile may have the RHM homogeneously dispersed throughout the tile structure, or it may have the RHM concentrated in layered form.

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