A PROCESS FOR THE PREPARATION OF CARBON REFRACTORIES FROM SPENT CATHODES OF ALUMINIUM SMELTING PLANT

摘要

The present invention relates to a process for the preparation of carbon-refractories from spent cathodes of aluminum smelting plant. The process steps comprises : mixing graphite powder with a dry refractory mix of china clay, ball clay, feldspar and quartz powder to obtain mixture of equal volume of the said graphite powder and refractory mix, diluting the mixture with water to obtain a dough, the cast was allowed to dry and fired in inert gas atmosphere first at 600 deg C and then at 1200 deg C to obtain the desired carbon-refractory brick.