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| Title | Date | Subject | Description | ||
|---|---|---|---|---|---|
| 1 |
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Process for separating high viscosity bitumen from tar sands | 1984-12-04 | separating bitumen from tar sand; high viscosity bitumen; tar sand; bitumen recovery; patent | A novel process for separating high viscosity bitumen from tar sand. The process includes grinding the tar sand to obtain phase disengagement of the bitumen phase from the sand phase and thereafter using flotation techniques to obtain phase separation of the bitumen phase from the sand phase. Phase ... |
| 2 |
 |
Tar sand processing apparatus | 1976-04-20 | processing tar sand; tar sand; bitumen recovery; oil recovery; patent | Apparatus for processing tar sands to recover bitumen therefrom, and without the use of heat of steam, such apparatus including a processing tank having a concave, upwardly facing bottom constructed for receiving the upper flight of an endless conveyor thereat. Structure is provided for admitting ta... |
| 3 |
 |
Process for recovering products from tar sand | 1983-10-11 | physical separation process; thermal fluidized bed process; tar sands; patent | A combination physical separation process and thermal fluidized bed process for recovering products from tar sands. The process includes initially separating a portion of the sand from the tar sand through a physical separation process, yielding a bitumen-rich concentrate. The bitumen-rich concentra... |
| 4 |
 |
Separation of bitumen from dry tar sands | 1978-10-17 | bitumen separation; bitumen recovery; dry tar sands | A process for the separation and recovery of bitumen from dry tar sands or sands with negligible quantities of connate water. The process includes comminuting the tar sands to an average particle size of approximately one centimeter in diameter and digesting the comminuted tar sand in a hot, aqueous... |
| 5 |
 |
Bitumen recovery from tar sands | 1984-09-11 | Patent; Bitumen recovery; Tar sands; Kerosene; Flotation cell; Bitumen | A process for recovering bitumen from tar sands wherein the tar sands are pretreated with a diluent, such as kerosene in the preferred embodiment, to lower the viscosity of the bitumen such that it is in the range of about 5 to about 20 poise at the digestion temperature. The tar sands are then dige... |
| 6 |
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Ambient froth flotation process for the recovery of bitumen from tar sand | 1984-01-10 | Patent; Bitumen; Tar sand; Admixing raw tar sand; Tar sand slurry; Milling; Froth flotations; Ambient temperatures; Concentrated bitumen tar sand product; Oil; Recycle and recovery | A method for upgrading the bitumen content of tar sands, wherein a raw tar sand slurry admixture of tar sands, water, collectors, and dispersing/wetting agents is milled; conditioned and then separated by a series of froth flotations at ambient temperatures from about 2.degree. C. to about 25.degree... |
| 7 |
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Process for recovering bitumen from tar sand | 1980-12-02 | oil sand; slurry; bitumen; bitumen recovery | Oil sand is mixed with steam and water in a tumbler to produce a slurry. The slurry is then transferred to the immersed portion of an apertured inclined surface in a water bath. The inclined surface may be in the form of a rotating drum, a tilted rotating dish or an inclined moving endless conveyor ... |
| 8 |
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Methods of tar sand bitumen recovery | 1992-09-01 | Bitumen recovery; Tar sand; Water displacement extraction; Patent | Methods for the recovery of bitumen from tar sands comprising the steps of mixing tar sand, solvent and a displacing amount of aqueous medium to form a mixture, followed by separating a bitumen-rich solvent phase from the mixture and recovering bitumen from the bitumen-rich solvent phase are disclos... |
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