AROUND PIT SYSTEM – bucket wheel excavator, beltwagon, conveyors…
A continuous soft rock process starts with a bucket wheel excavator.The mined material, overburden or other material, such as lignite, is then transported from the pit on conveyors. Overburden material is typically dumped on the other side of the pit across from the mine face. LIMING has a long history as a leading supplier of soft rock mining systems. We supply a multitude of different machines, with various purposes and capabilities to facilitate the continuous process. Our engineering and mining experts design the correct system for each specific mine, using one of the two following techniques.
AROUND THE PIT SYSTEM
In this technique, the conveyor system transports the material along three sides of the pit. Because each mine operation is unique, LIMING’s engineering and mining experts design the correct system for each specific operation.
The bucket wheel excavator, through an installed conveyor system, discharges overburden into the receiving chute of a hopper car. To minimize distance and height issues, a beltwagon can work as a mobile link to the mobile hopper offering greater flexibility. A conveyor system, specially adapted to the topographic conditions, transfers the material around the pit to a crawler-mounted spreader which discharges the waste material in the dumping area. LIMING’s around the pit systems:
1. Adapt to different mining and deposit conditions
2.Provide shiftable or mobile conveyors
3.Accommodate long distances between mines and dump areas
CROSS PIT SYSTEM
In this specialized system, to be used as an across the pit conveyor, the excavator extracts overburden material and feeds it via conveyors to a spreader. The spreader conveys the waste material directly across the open pit and onto the developing dumping area. LIMING’s cross pit systems:
1. Produce the shortest distance and time for conveying material
2. Mines deeper reserves economically
3. Meet requirements of certain geographical conditions at the dump site
CROSS PIT SYSTEM – bucket wheel excavator and spreader
…and spreader for continuous mining
IPCC systems
In a continuous hard rock process, drilling and blasting are still utilized. But unlike the traditional load and truck haul process, the materials transportation from the pit is continuous. The process includes in-pit crushing plants, a conveying system and spreader to dispose of waste material in a dumping area.