Systems and methods for grinding coal with secondary air...

Details Systems and methods for grinding coal with secondary air... Systems and methods for grinding coal with secondary air...

2011-04-19

2011-04-19

Francis, Faye (Department: 3725)

Solid material comminution or disintegration

Apparatus

With automatic control

C241S117000

Reexamination Certificate

active

07926751

ABSTRACT:
A grinding system includes a mill housing. A milling unit in the housing has a moveable milling member operable to grind coal. A drive system includes a drive shaft and at least one gear in a gear case drivingly connecting the milling member to the drive shaft. An exhauster is operable to draw air into the housing through an inlet and draw a mixture of air and powdered coal out of the housing through an outlet. A pressurization system is operable to maintain the gear case pressure at a higher pressure than an air pressure in the housing. In one method of grinding coal a gear case pressure is maintained at a pressure higher than a pressure at the housing inlet while the milling member grinds coal into a powder and the exhauster draws a mixture of powdered coal and air out of the housing.

REFERENCES:
patent: 3205843 (1965-09-01), Bogot
patent: 4184640 (1980-01-01), Williams
patent: 4402462 (1983-09-01), Lohnherr
patent: 4498633 (1985-02-01), Williams
patent: 5095827 (1992-03-01), Williams
patent: 5137218 (1992-08-01), Sutherland et al.
patent: 5277134 (1994-01-01), Schlessing et al.
patent: 5839673 (1998-11-01), Williams
patent: 5873156 (1999-02-01), Wark
patent: 5944270 (1999-08-01), Farris
patent: 6820829 (2004-11-01), Oder et al.
patent: 7028931 (2006-04-01), Lin et al.
www.turbinesales.com website page printed on Sep. 15, 2006.
www.pulverizers.net website page.

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