Composition pour recuperer du bitume a partir de sables bitumineux

Composition for recovering bitumen from oil sands

Abstract

An improved composition for recovering bitumen from oil sands is used in the traditional "hot water extraction process. An aliquot of a solvent mixture is mixed with bitumen ore and water. A pH builder is added and following mixing primary and secondary froths are recovered. The solvent mixture contains a monoterpene, nonionic surfactant, a short chain alcohol and a short chain ketone. Primary and secondary froth recovery is at least 80% at temperatures of about 35°C. Only very small amounts of solvent are used, and all solvents are biodegradable.

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