Process using carbonate reagent for recovering vanadium from cokes and ashes derived from heavy oils
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United States of America Patent
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Sep 18, 1984
Issued Date -
N/A
app pub date -
Jul 25, 1983
filing date -
Oct 14, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Vanadium values are recovered from sulphur-containing cokes and ashes derived from heavy oils by a novel process comprising heating in the presence of alkali metal carbonate, contacting the resulting solid residue with water to form a leach and recovering the vanadium values dissolved therein. The amount of alkali metal carbonate used is at least sufficient to convert the vanadium values present in the raw material into alkali metal vanadate, but insufficient to react in addition with all of the sulphur values therein. The heating step solubilizes only alkali metal vanadate and thus the leach solution is substantially free of contaminating substances.
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