A METHOD FOR PRODUCING WETTABLE CATHODE CARBON BLOCKS

WIPO Patent Application WO/2008/046255

A1

A method for producing wettable cathode carbon blocks, which involves wettable cathode carbon blocks used in aluminum reduction cell, especially a method for producing drained carbon blocks used in diversion-type aluminum reduction cell. It includes formulating, vibratory compacting the cathode body, vibratory compacting the composite-layer on the cathode body and baking; It is characterized in that, TiB2 added into the formulation of the composite layer on the cathode body is grainy TiB2 –carbon composite material. The present method can effectively increase the TiB2 amount in the composite-layer, the thickness of the composite-layer can be up to 20-200mm. By changing the shape of the indentor of a mold, hetero- typical cathode-carbon blocks with reclining angles and grooves on its surface can be made. It can satisfy the requirements of making grooves and reclining angles of 2-15 º on the working surface of the cathode. The cathode carbon blocks can resist the abrasion of cryolite and have less deformity, so they can be used as the drained carbon blocks of diversion-type aluminum reduction cell.

LIU FENGQIN (CN)
YANG HONGJIE (CN)
CHEN KAIBIN (CN)
LUO YINGTAO (CN)

PCT/CN2006/003315

April 24, 2008

December 06, 2006

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ALUMINUM CORP OF CHINA LTD (CN)
LIU FENGQIN (CN)
YANG HONGJIE (CN)
CHEN KAIBIN (CN)
LUO YINGTAO (CN)

C25C3/08

US4526669A	1985-07-02
US5024793A	1991-06-18
US6180182B1	2001-01-30

CHINA PATENT AGENT (H.K.) LTD. (Great Eagle Centre23 Harbour Road,Wanchai, Hong Kong, CN)

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