B - Operations – Transporting – 07 – B
Patent
B - Operations, Transporting
07
B
B07B 15/00 (2006.01) B03B 9/00 (2006.01) B07B 9/00 (2006.01) C10C 3/18 (2006.01) C10G 1/00 (2006.01)
Patent
CA 2738011
Separation of bitumen from mined ore employs cooling of the mined ore at a temperature where all the species contained in the ore become solid and brittle. Ore is maintained solid by appropriate continuous injection of cold air and/or carbon dioxide in the processing plant through the process. Difference in thermal expansion coefficient between bitumen and other ore species creates thermal stresses at interfaces of bitumen and other materials. The stresses favor separation of bitumen from other materials along species interfaces during comminution. The breaking of existing ore particles tends to occur at interfaces between different species, creating a mix of particles where bitumen particles are not aggregated with any other ore constituents such as ice or sand particles. The particles are maintained cold, loose and unattached. Ore particles are sorted and separated while still frozen in solid phase, creating a stream of frozen bitumen particles. The process is stopped when bitumen concentration is large enough for economical treatment by other bitumen existing processing techniques.
Galtenco Technology Ltd.
R. William Wray & Associates
LandOfFree
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