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US 4,156,593 AGranted
Ultrasonic wet grinding coal
AssigneeEnergy and Minerals Research Co.
InventorWilliam B. Tarpley, Jr.
Life of this patent
Estimating the term…
Abstract
A slurry of coal and a liquid which includes a leaching agent is directed through a chamber. The coal particles are comminuted and cavitation is induced in said slurry while the slurry is in the chamber by contact in the slurry with a resonant vibration transmitting member. Thereafter, the liquid is separated from the comminuted particles.
Claims8
A method of comminuting solid particles comprising:
- (a) forming a slurry of solid particles and a liquid,
- (b) directing the slurry through a chamber,
- (c) comminuting said particles and inducing cavitation in said slurry while said slurry is moving through said chamber by contacting said slurry with a resonant vibration transmitting member, and
- (d) positioning said member in said chamber so that there are no inactive regions of vibratory energy through which the slurry can flow,
- (e) supporting said member by a mount which minimizes loss of vibratory energy to the support,
- (f) separating the liquid from the comminuted particles.
3 more elements
A method of comminuting solid particles comprising:
- (a) forming a slurry of coal containing contaminants in the form of pyrites with a liquid containing a leaching agent capable of extracting said contaminants,
- (b) pumping a slurry through a chamber having an inlet spaced from an outlet,
- (c) comminuting said coal and inducing cavitation in said slurry while said slurry is moving through said chamber by contacting said slurry with a resonant vibration-transmitting member thereby exposing said contaminants,
- (d) positioning said member in said chamber so that there are no inactive regions of vibratory energy through which the slurry can flow,
- (e) supporting said member by a mount which minimizes loss of vibratory energy to the support,
- (f) extracting the contaminants by said leaching agent, and
- (g) separating the liquid from the comminuted coal particles.
4 more elements
Dependencies are inferred from the claim text.