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Dust Control on a Longwall Face With a Shearer-mounted Dust Collector.

Authors
Jayaraman-NI; Grigal-D
Source
NTIS: PB 271 876 :10 pages
Link
NIOSHTIC No.
10000093
Abstract
A field study was conducted by the Bureau of Mines to determine the feasibility and effectiveness of a secondary ventilation system retrofitted onto an eickhoff edw 340l double-drum shearer as a technique for controlling respirable dust generated during a longwall mining operation. An airflow duct was formed by enclosing the bottom of the undercarriage with steel plate and cutting air channels through the ends of the undercarriage frame. Air intakes were provided behind each cutting drum and at several locations along the undercarriage. Grills were installed at the intakes to prevent the broken coal from entering the ducting. A dust collector consisting of a 5,000-ft3/min fan, water sprays, and a minicyclone panel was installed on the shearer at the tailgate end. Field results indicated that the secondary ventilation system reduced respirable dust more than 60% along the face. Reduction was less near the intake airway and when secondary dust sources occurred.
Publication Date
19770101
Document Type
IH; Report of Investigations
Fiscal Year
1977
NTIS Accession No.
PB-271876
NTIS Price
A02
Identifying No.
RI-8248
NIOSH Division
PRC;
Source Name
NTIS: PB 271 876
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