METHOD AND APPARATUS FOR CONTROLLING ROLLER MILL

Japanese Patent JP3742205

B2

PROBLEM TO BE SOLVED: To avoid self-exitated vibration by a method in which in an apparatus for crushing a raw material by crushing rollers, the supply of the raw material, after being made excess temporarily at the start of the supply, is reduced, and a crushing load is set up low at the start of the supply of the raw material, and the crushing load is increased with the passage of time.
SOLUTION: A crushing raw material 5 supplied from a raw material supply pipe 4 to the center of a rotary table 2 is moved to the periphery of the table 2 by centrifugal force to be crushed between a crushing lace 6 and a crushing roller 3. A crushed powder and granular material are dried while being lifted in a housing 1 by hot air 7 from an air throat. In order to avoid self-excited vibration generated with the actuation and stop of a roller mill, a quantitative overshoot is implemented temporarily simultaneously with the start of the supply of the crushed raw material 5. Next, the supply of the raw material, after being reduced close to a lower limit, is elevated again. The crushing load is set up low at the start of the supply of the crushed raw material 5 and increased again corresponding to the amount of the supplied raw material.

Kazunori Sato
Nobuyasu
Kazuki Masaji
Eiichi Nishida
Chew Hasegawa
Teruma Tachima
Hiroaki Kanemoto
Kazuki Tanimoto

JP31543497A

February 01, 2006

November 17, 1997

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Babcock Hitachi Ltd.

B02C15/04; B02C25/00; (IPC1-7): B02C15/04; B02C25/00

JP7328464A
JP6079191A
JP62095742U
JP9047679A
JP1127054A
JP9206614A
JP4277038A
JP4083541A
JP7080338A

Kenjiro Take

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