abstract |
SYNTERIZED REFRACTORY BLOCK, MANUFACTURING PROCESS OF A REFRACTORY BLOCK, AND ELECTRICALysis CUBA. Sintered silicon carbide (SiC) -based refractory block with silicon nitride bonding (Si ~ 3 ~ N ~ 4 ~), notably intended for the manufacture of an aluminum electrolysis vat, characterized in that it contains, in percentages in weight at least 0,05% boron and / or between 0,05 and 1,2% calcium. |