Emissions-free Longwall System Designed For Low Seam Deposits
Caterpillar said the hard rock shearer uses Cat Activated Undercutting Technology. The 41-metric ton (mt) HRM220-based system features two cutting heads. Each of the units is powered by a 132-kilowatt (kW) (177-hp) motor and can cut rock exceeding 120 megapascal (MPa) (17,404 psi) uniaxial compressive strength. Electronic modules enable remote operation and diagnosis.
The HRC30 conveyor has a haulage capacity of 160 mt (176 tons) per hour, uses high-strength steel, and can be configured to suit different face lengths up to 100 meters (m) (328 ft).
The HRS1220 roof support features a working range of 1,060-2,155 mm (41.7- 84.8 in.) with a yield load of as much as 2,599 kiloNewton (kN) (377 psi).
The mining system is designed to replace
conventional drill-and-blast operations
in low heights, ranging from 1.3-2
m (4.2-6.6 ft) and in bedded deposits
such as some types of platinum, copper
and gold deposits, the company reported.
The diesel emissions-free system can
follow the seam and maximize ore mined
while keeping dilution to a minimum.