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US 6,572,040 B1Granted
Coal grinding, cleaning and drying processor
AssigneeHiMicro Incorporated
InventorCharles Kepler Brown, Jr.
Life of this patent
Estimating the term…
Abstract
A coal processing mill incorporates integral systems for coarse coal dewatering, grinding, injection of a peptizing agent into the ground coal stream before it enters an agitation zone (where the peptization process takes place), passing the treated coal and the peptized clay and ash through a separating valve and passing the separated coal on to final drying. In other embodiments, ash and pyrites (of much higher density than coal) are separated from coal and the coal can then be fired.
Claims19
A coal processing mill comprising:
- means for grinding the coal,
- means for peptizing the clay component of ash materials in the coal, and
- means for centrifugally removing the peptized clay ash component along with the insolvent remaining portions of ash.
A mill for processing material having components of differing densities, the mill comprising:
- means for blocking the more dense component while permitting the upward flow of less dense material,
- means for conducting the more dense component through a loop,
- means for injecting a liquid into the loop to maintain free movement of the particles of the more dense component within the loop, and
- means defining a separate stream for diversion of the more dense particles,
- wherein the mass of the particles of the more dense component in the loop and the lubricity of the liquid injected into the loop resist entry into the loop of particles of the less dense component while permitting entry into the loop of particles of the more dense component due to the capacity of their greater mass to exert force through the loop, displacing one or more particles of a similar size and mass at the other end of the loop, thereby completing the diversion of more dense particles from less dense particles into the separate stream.
2 more elements
Dependencies are inferred from the claim text.