6 stripping ratio the main factor in designing a n open pit mine which largely determines the cost of mining is the stripping ratio stripping is the removal of waste rock from above and around the orebody stripping ratio is defined as the tonnage of waste rock to be mined divided by the tonnage of ore to be mined from the pit.
A abutment in coal mining 1 the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides which act as abutments of the arch of strata spanning the roadway and 2 the weight of the rocks over a longwall face is transferred to the front abutment that is the solid coal ahead of the face and the back abutment that is the settled packs behind the
Apr 01 the dip of the coal seam is 1 –4 in northerly direction the block has mt of coal reserves in turra and purewa bottom top and combined seams the average stripping ratio is ie 376 m 3 of overburden is to be removed for extraction of 1 t of coal the mine is currently producing 14 mt of coal per
Coal ash calculation – onemine mining and minerals library coal ash calculation gives the ratio of mineral values for the other coalblend weight will be lower than for
Crusher and conveying open pit mining inpit crushing and conveying ipcc systems are receiving more attention today due to current characteristics of openpit mining operations and what is expected to occur in the future today it has become more necessary than ever to reduce the cost of truck haulage which accounts for roughly half the operating costs of mining
Effect of stripping ratio in coal mining solution for ore effects of strip mining a ll mining operations have a disruptive effect on the so long as the ratio between the overburden and the coal seam called the stripping ratio in coal mining what is a good strip ratio – the qampa wiki 1 overburden ob
In general coal crushers are categorized into two types and three types of primary crushers as follows primary coal crusher used for larger coal size the primary coal crushers may be of different types such as 1 coal jaw 2 coal hammer and 3 ring granulator secondary coal crusher used when the coal coming from the supplier is
Mar 19 crusher reduction ratio i have mentioned the fact that as the of voids in the crushing chamber decreases the production of fines by attrition increases this is like saying that as the crusher reduction ratio in any given crusher is increased the of fines in the product will increase even though the discharge setting remains
Stripping ratio calculation in mining bbnonnapinaeu after coal comes out of the ground it typically goes on a conveyor belt to a preparation plant that is located at the mining
Stripping ratios – surface mining coal mining and geology 24 nov coal miners measure waste in bcm or bcy and coal in tonnes or tons thus in coal sr is the number of bcm of waste that needs to be more
The coal as a fuel and cause environmental problems in its use the depth thickness and configuration of the coal seams determine the mode of extraction shallow flat coal deposits are mined by surface processes which are generally less costly per ton of coal than underground mines of similar capacity strip mining is one of
What is stripping ratio coal mining crusher mczb heavy coal strip mine crusher plant benbbennekomnl aug 31 chapter 2 the environmental effects of strip mining the strip effects of strip mining a ll mining operations have a disruptive effect on the so long as the ratio between the overburden and the coal seam called the stripping ratio in coal mining what is a good strip ratio
What is stripping ratio coal mining crusher coal ton to bcm binq mining stripping ratiossurface mining coal mining and geology 24 nov coal miners measure waste in bcm or bcy and coal in tonnes or tonsthus in coal sr is the number of bcm of waste that needs to be more
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