Study on electrolytic aluminium carbon anode preparation with calcined anthracite

Abstract

In order to release increasingly scarcity of petroleum resources and make full use of anthracite resources, calcined anthracite was adopted to replace partly petroleum coke to produce electrolytic aluminium carbon anode in this paper. The results showed that when ash content is 0.95%, the volume density (1.452g/cm3) and the porosity (22.77%) match well. The compression strength (37.59MPa) and electrical resistivity (54.72μΩ·m) are all in the range of the first class standard of carbon anode in China when carbon anode contains 40% of calcined anthracite and 18% of coal pitch. The reactivity of calcined anthracite carbon anode at 970℃ is superior to complete petroleum coke.