Method and apparatus for grinding and drying a material or a mixture of materials
AssigneeAirgrinder AB
InventorErik Bäcklund
Life of this patent
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Abstract
The invention relates to a method for grinding and drying a material or material mixture (M), using a cyclone device (10) which communicates with an outlet line (52) for gas (G) and material (M) processed in the cyclone device (10), wherein at least a portion of the gas (G) and material (M) in the outlet line (52) are returned into a lower opening (14) of the cyclone device (10) for further cyclone treatment. The invention relates also to an apparatus.
Claims11
A method for processing a material or a mixture of materials using a single cyclone device communicating with an outlet line for gas and material processed in the single cyclone device, the method comprising:
- processing the material in the single cyclone device;
- and
- returning at least a portion of the gas in the outlet line directly into a lower opening of said single cyclone device via a return line extending between the outlet line and the lower opening of the single cyclone device for energy saving,
- wherein a rate of return of said gas is controlled by a valve assembly arranged in the return line.
An apparatus for processing a material or material mixture, the apparatus comprising:
- a single cyclone device for processing the material, the single cyclone device communicating with an outlet line for gas and material, wherein a return line with a valve assembly is arranged between the outlet line and a lower opening of said single cyclone device, wherein at least a portion of the gas exiting the single cyclone device is returned directly into the lower opening of the single cyclone device via the return line for energy saving, and wherein a rate of return of said gas is controlled by the valve assembly in the return line.
Dependencies are inferred from the claim text.