Practical techniques for longwall dust suppression

Journal Article · Wed Dec 01 04:00:00 EST 1982 · Coal Min. Process.; (United States)

OSTI ID:5950262

Scott, F E

This paper reports results of research on dust suppression from a seminar on Longwall Health and Safety. It suggests design features for dust control such as: longwall water supply should provide 100 gpm with at least 60 gpm available to shearer at drum spray pressure of 150 psig; shearer water should be directed toward the drum sprays, with an external spray system to hold dust against the face; optimal cutting should be unidirectional downwind with support advance on return side of shearer during cleanup pass; when cutting conditions permit, drum rotation speeds should not exceed 45 rpm with lower speeds desirable; airflow should be coursed from tail to head (otherwise, a ventilation velocity of 400 fpm should be attempted); to maximize ventilation, a gob curtain will prevent air leakage between the first shield and the rib, while a ''cut-out'' curtain at the end of the panel can prevent dust exposure to shearer operators.

• OSTI ID: 5950262
• Journal Information: Coal Min. Process.; (United States), Journal Name: Coal Min. Process.; (United States) Vol. 19:12; ISSN CMPRB
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
016000 -- Coal
Lignite
& Peat-- Health & Safety
AIR FLOW
CONTROL
CONVEYORS
CUTTER LOADERS
CUTTING
DUST COLLECTORS
DUSTS
EQUIPMENT
FLUID FLOW
GAS FLOW
HAULAGE EQUIPMENT
LONGWALL MINING
MACHINING
MATERIALS HANDLING EQUIPMENT
MINING
MINING EQUIPMENT
NATIONAL ORGANIZATIONS
POLLUTION CONTROL EQUIPMENT
SCRUBBERS
SHEARER LOADERS
SPRAYS
UNDERGROUND MINING
US BUREAU OF MINES
US DOI
US ORGANIZATIONS
VENTILATION
WATER SUPPLY