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WITH the Australian coal industry keeping a close eye on the developments in longwall top coal caving, it will be of interest that Russia recently ordered and ramped up a system from China National Coal Mining Equipment which is now achieving up to 10,000 tons per day.
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| Equipment supplied to Russian mine Aolireasji by China National Coal Mining Equipment. |
China Coal Overseas Development Co, a subsidiary of China National Coal Mining Equipment, supplied Russian mine Aolireasji with a complete set of fully mechanised sub-level caving equipment.
Equipment exported included sub-level caving power supports, the front and rear heavy-duty armoured face conveyors, shearer and stage loader. The total installed power of the system is about 3500kW.
China Coal Overseas Development Co guaranteed the system would achieve 6000t per day over a 12-month period. The guaranteed production was achieved by the mine in about six months with a maximum daily output of more than 10,000t.
Total cost for the 150m turnkey longwall mining system was about $A30 million.
"The system was ordered in November 2005 and was supplied to the mine in June 2006 with guaranteed production achieved in December 2006 – not a bad feat in anyone's books," Ellton Longwall managing director Mark Newton said.
In Australia Ellton Longwall is the official agent for China National Coal Mining Equipment – the largest longwall equipment manufacturer in China.
The specific equipment that can be supplied by Ellton includes:
Complete turnkey longwall systems
Powered roof supports
Sub-level caving roof supports
Shield roof supports
Heavy-duty armoured face conveyors
Beam stage loaders
Crushers
Gearboxes
Mining chains
Industrial chains
Chain connectors
Flight bars
Shearers
Hydraulic props
Newton said a number of the products would be showcased at the upcoming AIMEX 2007.
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