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Home › Process for selective recovery of relatively metals-free bitumen from tar sand using a halogenated aliphatic solvent in combination with a second solvent

Process for selective recovery of relatively metals-free bitumen from tar sand using a halogenated aliphatic solvent in combination with a second solvent

US Patent 4217202 · Granted Aug 12, 1980

Estimated economic value: $19,007,000 ⓘ

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