Technology Of Mining Limestone With Surface Miner

In our country, the limestone is very rich, and it's the primary material of the production of cement and lime. Among the mineral products of class A, its output is only after coal. In present, the major mining method of China's limestone is drilling and blasting, and then the loading shovel, crushing and transport. The mining arts and crafts are complex, and they have low production efficiency and greater energy resources.As the advances of our society, the directions of the world's mining industry are the large-scale and intelligent equipment, exploitation continuous, automatic operation, digital resources, sound mining, and self-service mining. As the rise equipment of open pit mining in past thirty to forty years, Surface miner has significant advantages such as simple operation, high efficiency, large capacity, and lower environmental pollution. it can act in concert with cars, the belt conveyor well.Through the application of RFPA2D software, we have make numerical simulation research about mechanical cutting tools cutting and broken heterogeneous brittle rocks, and it can help us understand the whole process and mechanism of surface miner cutting rocks better, and thus we can design the equipment and optimize to engage in the of a reasonable set of bit dip; In order to use the interaction between the drills a bit better and through anlehnung the research of interaction between drills at home and abroad, the reasonable spacing between the drill was analysed.In this article, the composition, classification, technical performance and advantages and disadvantages of surface miner are analyzed and summarized, and the mining technology is outlined. At present, surface miner is mainly used in soft rock mining at home and abroad and it is very limited on the hard rock mining. It is think that surface miner with high pressure water Jet technology can give full play to the strengths of the two, and it will greatly expanding the surface miner mining range of rock hardness, to achieve economic exploitation in medium hard rock or even hard rock. For the characteristics of limestone mine, we analyzed equipment selection under the continuous or semi-continuous mining technology, such as surface miner, conveyor, trucks and dump machine.