04057486 is referenced by 26 patents and cites 6 patents.

Tar sands and like mineral solids-plus petroleum deposits are separated into a petroleum fraction and a solids fraction by contacting with an organic solvent or diluent (in one or more stages) to give a liquid slurry, providing in the system a small amount of an aqueous agglomerating liquid, mixing and agitating until discrete compact agglomerates of hydrophilic solids form, separating the solid easily-handled agglomerates and recovering the petroleum fraction and solvent or diluent. This process avoids the large volumes of aqueous effluent inherent in the "hot water" and other processes using large amounts of water. The solid agglomerates may be used as clean fill, sintered to aggregate, or modified to serve as soil amendments.

Title
Separating organic material from tar sands or oil shale
Application Number
5/595762
Publication Number
4057486
Application Date
July 14, 1975
Publication Date
November 8, 1977
Inventor
J Redmond Farnand
Ottawa
CA
Ira E Puddington
Ottawa
CA
Bryan D Sparks
Ottawa
CA
F Weldon Meadus
Ottawa
CA
Agent
Alan A Thomson
Assignee
Canadian Patents and Development
CA
IPC
C10G 1/04
View Original Source