MANUFACTURE OF A SODERBERG ELECTRODE INCORPORATING A HIGH CARBON-CONTRIBUTING PHENOLIC SACRIFICIAL BINDER

摘要

TITLE OF THE INVENTIONMANUFACTURE OF A SODERBERG ELECTRODE INCORPORATING AHIGH CARBON-CONTRIBUTING PHENOLIC SACRIFICIAL BINDERABSTRACTThe invention is a novel Soderberg electrode pastecomposition. The composition is a mixture comprisingcarbonaceous aggregate, novolac resin binder,plasticizer and optionally hexamethylenetetramine. Thenovolac resin of the binder ha a melting point of atleast 100°C and a free phenol content of not more than4% by weight based on the weight of novolac resinsolids. The residual coking value of the composition ofthe invention is at least as great as the minimumpreferred coking value of traditional Soderberg pasteswhich are based on coal tar pitch binder.