Abstract

The “Orinoco Oil Belt” in Venezuela is one of the largest oil deposits in the world. The special characteristic of this heavy oil is its high asphaltene and vanadium content. Together with the Venezuelan oil industry represented by INTEVEP, Swiss Aluminium Ltd. has conducted a joint research and development program, to investigate the influence of vanadium on the various steps in aluminium production. The interrelationship of petroleum coke quality, anode manufacture, cell performance and metal quality was investigated. The influence of high vanadium contents on aluminum and its alloys was studied in detail. The results obtained with a 500 ton heavy oil coke sample, produced in a specially designed delayed coker pilot plant in Venezuela indicate that high vanadium coke anodes can be produced which are suitable for use in the reduction process.

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