Micronized grinding apparatus

Patent · Tue Jun 11 04:00:00 EDT 1985

OSTI ID:6162215

Williams, R M

Apparatus for grinding coal to micron fineness having a grinding chamber with a grinding surface supported by a circumferential wall in the grinding chamber, a plurality of grinding rolls orbiting in the grinding chamber for grinding the coal, air supply bustle surrounding the grinding chamber, air flow restrictor means opening from the air supply bustle to the grinding chamber to create a back pressure in the air supply bustle for substantially evenly distributing the air supplied to the grinding chamber around the circumference of the grinding chamber, and wherein the restrictor means directs the air flow tangentially relative to the circumferential wall of the grinding chamber so that the coal particles are caught up in a cyclonic movement having a large initial horizontally directed force to maintain a body of coal particles in the orbit of the grinding rolls, which horizontal force gradually diminishes as the vertical force component of the air flow lifts the ground coal particles out of the grinding chamber.

• Assignee: Williams Patent Crusher and Pulverizer Co.
• Patent Number(s): US 4522343
• OSTI ID: 6162215
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
AIR FLOW
CARBONACEOUS MATERIALS
COAL
COAL FINES
COAL PREPARATION
COMMINUTION
CONTROL EQUIPMENT
ENERGY SOURCES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FOSSIL FUELS
FUELS
GAS FLOW
GRINDING
GRINDING MACHINES
MACHINE TOOLS
MACHINING
MATERIALS
PARTICLE SIZE
POWDERS
PRODUCTION
SIZE
TOOLS