Testing modified coal-cutting bit designs for reduced energy, dust, and incendivity. Report of investigations/1983

Technical Report · Tue Nov 01 04:00:00 EST 1983

OSTI ID:5167272

Roepe, W W; Hanson, B D

Four bit designs, two conical and two radial, were tested in coal against a 60 degrees conical reference bit to obtain data on orthogonal cutting forces and primary respirable dust generation. One concial and one radial design were modified by the Bureau of Mines for these tests. Results were mixed: One radial bit used substantially lower overall cutting forces and specific energy than the other bits and was the only cutter lower on energy and most forces than the standard 60 degrees bit. However, it generated more specific and total dust than any other bit. The four bits were also tested for incendivity, with a 90 degrees plumb-bob bit as the reference. The frictional ignition tests were designed to simulate both trimming top rock and cutting such rock during advance on-sump.

• Research Organization: Bureau of Mines, Twin Cities, MN (USA). Twin Cities Research Center
• OSTI ID: 5167272
• Report Number(s): PB-84-140300; BM-RI-8801
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
AIR POLLUTION CONTROL
COAL MINING
CONTROL
CUTTING TOOLS
DUSTS
EQUIPMENT
FRICTION FACTOR
IGNITION
MINING
MINING EQUIPMENT
PERFORMANCE TESTING
POLLUTION CONTROL
TESTING
TOOLS