A Polish miner has set the world record for daily production from a longwall system using plows, churning out 24 400 tonnes of coal from a single face.
Polish coal miner Lubelski Wegiel Bogdanka achieved the record on 16 February.
It used a Cat plow equipped automated longwall at the Bogdanka coal mine.
The miner commissioned the longwall system in March 2010 and within six months had lifted output close to 17 000 tonnes of coal for day.
While achieving these records, the plow face also advanced more than 267 metres at a cutting height of 1.63 metres.
"We thought this achievement would be impossible for any shearer in seam heights as low as this," Zbigniew Stopa, Bogdanka’s vice president, said.
Michael Myszkowski, product support manager for Cat plow systems, said, “The fact that Bogdanka uses arch supports makes the world record even more impressive. Bogdanka is very ambitious, and they have been putting a lot of effort into technical and organisational improvements at the mine".
The Gleithobel GH 1600 plow system installed at Bogdanka has two sets of210/630 kW of installed power for the plow, and two sets of 800 kW for the armored face conveyor (AFC) equipped with the intelligent CST drive system.
Each of the 173 roof supports – with a support range of 950–2,000 mm – is equipped with its own PMC-R electrohydraulic roof support control.
The longwall is equipped with a PF4/1032 face conveyor, a PF4/1132 entry conveyor, and a SK 1111 crusher.
Caterpillar also provided the power supply and pump station equipment.
The mine itself produced 5.8 million tonnes of coal in 2011, and is planning to increase its output to 11.5 million tonnes in 2014.