Method of controlling a grinding roller mill

Details Method of controlling a grinding roller mill Method of controlling a grinding roller mill

1985-06-17

1986-07-29

Goldberg, Howard N.

Solid material comminution or disintegration

Processes

Miscellaneous

B02C 2500

Patent

active

046027440

ABSTRACT:
Roller mill control system for a centrifugally swung roller grinding mill to grind fuel in quantity to exactly match a burner fuel demand, driving the roller mill at a speed which varies as the fourth power of the percentage of burner demand for fuel so as to substantially match the mill grinding capability with variations in the percentage of the burner fuel demand, supplying air through the grinding mill for transporting the ground fuel to the burner at a substantially constant ratio of air to fuel from a minimum air velocity which maintains the ground fuel moving in the air stream, and monitoring the pressure differential across the roller mill between its air supply and outlet for detecting abnormal changes in the differential pressure as a safety net.

REFERENCES:
patent: 2003985 (1935-06-01), Wallene
patent: 2439721 (1948-04-01), Dickey
patent: 4184640 (1980-01-01), Williams
patent: 4382558 (1983-05-01), Svensson

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