Bonding of bodies of refractory hard materials to carbonaceous s

Details Bonding of bodies of refractory hard materials to carbonaceous s Bonding of bodies of refractory hard materials to carbonaceous s

1993-03-09

1994-06-14

Niebling, John

Chemistry: electrical and wave energy

Processes and products

204294, 427113, 4274197, C25C 306, B05D 700

Patent

active

053207173

ABSTRACT:
Bodies (3) such as tiles, plates, slabs or bricks of Refractory Hard Material (RHM) or other refractory composites are bonded to the cathodes or to other components, in particular to a carbon cell bottom (1), of a cell for the production of aluminium by electrolysis of a cryolite-based molten electrolyte, made of carbonaceous or other electrically conductive refractory material, by a non-reactive colloidal slurry (4) comprising particulate preformed RHM in a colloidal carrier selected from colloidal alumina, colloidal yttria and colloidal ceria. The slurry usually comprises preformed particulate TiB.sub.2 in colloidal alumina. The bodies (3) are usually TiB.sub.2 --Al.sub.2 O.sub.3 composites. The bonding is achieved simply by applying the slurry and allowing it to dry.

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