Rotative grizzly for oil sand separation
OwnerJan Kruyerinventor
Life of this patent
Estimating the term…
Abstract
A rotating grizzly having a downwardly slanting axis of rotation for reducing the size of agglomerated mineral particles comprising a rotatable framework made up from a series of spaced axial baffles interconnected by a series of parallel spaced bars wherein the baffles extend inwardly toward the axis of rotation a greater distance than the bars.
Claims15
A grizzly assembly for particle size reduction of agglomerated mineral materials consisting of a mined tar sands mixture composed of particulate solids and viscous liquid hydrocarbon bitumen with or without water comprising:
- (a) A rotatable grizzly framework having an entrance at one end and an exit at the opposite end consisting of a series of equidistantly spaced axial baffles, each being interconnected to an adjacent baffle by a series of parallel bars which bars are secured at either end thereof to said adjacent baffles and which are spaced to create apertures between the bars, said baffles extending inwardly toward the framework axis a greater distance than do said parallel spaced bars,
- (b) support means for rotatably holding said framework in a near horizontal position such that the framework axis slants downwardly from the entrance end to the exit end,
- (c) drive means to rotate said framework in said suport means,
- (d) receiving means below said grizzly framework to receive mineral particles falling through the framework apertures,
- (e) cover means surrounding said grizzly framework, and
- (f) means to introduce heat into the interior of the grizzly framework.
A method for reducing the particle size of agglomerated mineral materials consisting of a mined tar sands mixture composed of particulate solids and viscous liquid hydrocarbon bitumen with or without water comprising:
- (a) providing a grizzly assembly comprising:
- (i) a rotatable grizzly framework having an entrance at one end and an exit at the opposite end consisting of a series of equidistantly spaced axial baffles, each being interconnected to an adjacent baffle by a series of parallel bars which bars are secured at either end thereof to said adjacent baffles and which are spaced to create apertures between the bars, said baffles extending inwardly toward the framework axis a greater distance than do said parallel spaced bars,
- (ii) support means for rotatably holding said framework in a near horizontal position such that the framework axis slants downwardly from the entrance end to the exit end,
- (iii) drive means to rotate said framework in said support means,
- (iv) receiving means below said grizzly framework to receive mineral particles falling through the framework apertures,
- (v) cover means surrounding said grizzly framework, and
- (vi) means to introduce heat into the interior of the grizzly framework,
- (b) introducing agglomerated mineral particles into the entrance end of said rotatable grizzly framework,
- (c) causing said agglomerated mineral particles in said rotating grizzly framework to be lifted by the rotating framework until such particles fall by gravity to a lower portion of the rotating framework and are broken upon impact into smaller particles which either fall through the apertures of the framework onto said receiving means or are again lifted by rotation of the framework with the particles not falling through the apertures migrating from the entrance end toward the exit end of the framework as they pass through successive lifting and falling cycles caused by the rotating framework,
- (d) directing said particles falling onto said receiving means onto conveying means for recovery, and
- (e) removing particles which do not pass through the apertures of said rotating framework through the exit end of said framework.
Dependencies are inferred from the claim text.