A method, system, and device for separating oil from oil sands or oil shale is disclosed. The method includes heating the oil sands, spinning the heated oil sands, confining the sand particles mechanically, and recovering the oil substantially free of the sand. The method can be used without the addition of chemical extraction agents. The system includes a source of centrifugal force, a heat source, a separation device, and a recovery device. The separation device includes a method of confining the sands while allowing the oil to escape, such as through an aperture.

Provided is an apparatus for manufacturing base layer slurry for forming a porous base layer, the apparatus including a base container configured to accommodate base slurry including first slurry particles, and second slurry particles having larger particle sizes than the first slurry particles, and a centrifugation part provided in the base container and configured to centrifuge the base slurry into first base layer slurry including the first slurry particles and second base layer slurry including the second slurry particles, thereby obtaining an advantageous effect of simplifying structure and manufacturing process and improving productivity.