ON THE POTENTIAL OF USING SULFUR-CONTAINING PETROLEUM PITCHES IN ANODE MIXES

摘要

It was established that high sulfur contents in initial materials (cokes and pitches), and consequently in anode (electrode) mixes, can lead to surface corrosion of steel, current-conducting pins, and -when there are inadequate ventilating and scrubbing systems - to contamination of shop atmospheres as well as of adjacent territories. At the same time, it was shown [1] that an increase of the sulfur content in raw material - particularly in pitch binder - will have a positive effect on the quality of roasted electrode articles, since - during the anode formation process - sulfur plays a positive role, intensifying the compaction of resinous-asphalt substances [2]. It is considered [3] that a sulfur content in petroleum cokes of up to 2 percent would be no obstacle to its use in the aluminum industry. It is well known that the presence - in anode mix - of a considerable amount of sulfur will reduce its consumption when producing aluminum.