Title:
炭素熱還元炉用の耐破壊性電極
Document Type and Number:
Japanese Patent JP5101277
Kind Code:
B2
Abstract:
Graphite electrodes for the production of aluminum by carbothermic reduction of alumina are either submerged in the molten bath in the low temperature compartment or they are horizontally arranged in the side walls of the high temperature compartment. The electrodes are manufactured by using a mixture of coke particles covering the complete particle size range between 25 μm to 3 mm and by using an intensive mixer to effectively wet all coke particles with pitch. The electrodes have a flexural strength of at least 20 N/mm2. By using a complete range (continuum) of particle sizes in conjunction with an intensive mixer, the geometric packing of the particles is significantly improved, hence the material density is increased and thus a higher mechanical strength as well as improved electrical conductivity in comparison to conventional graphite electrodes is achieved.
Inventors:
Daimler, Johann
Application Number:
JP2007517042A
Publication Date:
December 19, 2012
Filing Date:
May 13, 2005
Export Citation:
Assignee:
SGL CARBON SE
International Classes:
C22B21/02; C04B35/532; C10L5/02; C22B4/08; C22B5/10; C25C3/12; F27B3/20; H05B7/085
Domestic Patent References:
| JP62108721A | ||||
| JP59121107A | ||||
| JP47049991B1 | ||||
| JP49008798B1 | ||||
| JP6092730A | ||||
| JP2004124229A | ||||
| JP2000233423A | ||||
| JP49018392A | ||||
| JP2005523344A |
Foreign References:
| US3554830 | ||||
| US6440193 | ||||
| US20040041291 |
Attorney, Agent or Firm:
Ryoichi Shino
Shuichi Sumiyoshi
Kawabe Sachiyo
Yasushi Miyagi
Kiyoshi Kuruma
Takuya Kuno
Toshio Yano
Kimihiro Hoshi
Hiroyasu Ninomiya
Einzel Felix-Reinhard
Shuichi Sumiyoshi
Kawabe Sachiyo
Yasushi Miyagi
Kiyoshi Kuruma
Takuya Kuno
Toshio Yano
Kimihiro Hoshi
Hiroyasu Ninomiya
Einzel Felix-Reinhard