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Mineral Processing Equipment : Mechanized cut and fill ore dressing method - A type of mining equipment that can trigger the development and change of the beneficiation technology industry. The main core machines are ball mills, rod mills, flotation machines, magnetic separators, etc.
12.4 underground mining method •bench-and-fill stoping-developed in early 1990s as a more productive alternative to cut-and-fill method.-initially drilling and extraction drives are mined along the ore length and width.-a bench slot is created between these two horizons at the end of.
Essential features of the role of the fill material in mechanized cut and fill mining are discussed, with particular emphasis on its dewatering and strength development after emplacement. the fill material is regarded as a chemically-reactive porous medium, the most important property of which is permeability. methods are described for measurement of permeability and.
The wpm method showed that conventional cut and fill is the optimum one with the value of 0.973, followed by mechanized cut and fill and shrinkage stoping.
In line with mining operations throughout australia, western mining corporation limiter’ is striving to increase productivity by intro- ducing mechanized mining techniques wherever possible. kambalda nickel operations’ (k.n.o.) largest operating nickel mine, long shaft, is currently introducing mechanized cut and fill methods which must provide flexibility to cater for an orebody that.
Mechanized cut-and-fill replaced conventional cut-and-fill. a specific example of the evolution in mining methods is in the recovery of rib pillars between backfilled stopes. in the 1960's undercut-and-fill replaced square set mining and by the late 1970's vertical retreat mining started to replace undercut-and-fill.
Evaluating two of the applicable methods (i.e. cut and fill, and shrinkage mining methods) traditionally show that cut and fill mining method is the best option with development efficiency.
Mechanized cut-and-fill stoping and it is this operation that is studied in this paper. a typical cut-and-fill mining sequence of an isolated orebody is des-3 cribed by brady and illustrated in fig. 1. the operation occurs between the 11 (495 m depth) and 15b (730 m depth) levels of the mine. a general.
The use of the mechanized apparent dip destress method started in 2008. this was the first mechanized destress method implemented and it involved mining a combination of apparent dip drives to excavate the target destress cut horizon in the plane of the reef (see figure 4). development was 2 m high and 4 m.
The length, width and dip of the orebody play a major role in the using cut and fill mining. generally, cut and fill stopes are 600' - 1000' long, vary from a minimum width of ( 8 ' mines act) to 35' and are particularly suited to areas where the dip varies or is shallow. wher the ore exceeds safe width, pillars are left as.
Open stoping in which the excavation is left as a permanent void with or without artificial support cut and fill methods in which the void left after ore is removed is filled with waste rock or tailings from the processing plant and caving methods in which the country rock is allowed or induced to collapse or cave to fill.
The mainstream of ore created at the stillwater mine is resultant from mechanized access ramp and fill mining. other mechanized mining techniques also used are sub-level stopping. in areas where the reef is constricted, stillwater mining uses a more discriminating; less productive technique of slushier cut and fills mining to haul out.
Table of contentsfactors affecting choice of methodreview of stoping methodsunderhand stoping mining methodoverhand stoping methodlongitudinal back, flat-back mining methodlong-wall stopingmmining methodrill-cut stoping miningsaw-tooth back stopingshrinkage stopingmining by combination stopingside stopingbreast stopingsublevel stopingsquare-set stopingfilling methodscaving methods.
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