The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 31, 2010
Filed:
Jan. 29, 2007
Amir A. Mirchi, Jonquière, CA;
Weixia Chen, Chicoutimi, CA;
Lise Lavigne, Chicoutimi, CA;
Emmanuel Bergeron, Alma, CA;
Jules Bergeron, Jonquière, CA;
Amir A. Mirchi, Jonquière, CA;
Weixia Chen, Chicoutimi, CA;
Lise Lavigne, Chicoutimi, CA;
Emmanuel Bergeron, Alma, CA;
Jules Bergeron, Jonquière, CA;
Alcan International Limited, Montreal, Quebec, CA;
Abstract
A new ramming paste for aluminum reduction cell cathodes is a high swelling cold ramming paste made of a blend of pitch, light oil diluent and an aggregate comprising a mixture of anthracite and crushed anode butts or calcined coke. The presence of the crushed anode butts or calcined coke increases the sodium swelling index of the paste by about four times higher than that of regular ramming pastes. This new high swelling cold ramming paste may also contain an amount of a refractory hard material, such as TiB.