A Comminution Model for Secondary Fragmentation
rock size distribution using input data as: primary frag-mentation outcomes, aspect ratio of blocks, block strength, ... When a block is under breakage in BCF, it is split into two new equal
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rock size distribution using input data as: primary frag-mentation outcomes, aspect ratio of blocks, block strength, ... When a block is under breakage in BCF, it is split into two new equal
Get Price2017-7-3 · BCF also considers the rounding of block and fine material generation. Although it is being used around the globe, there are several shortcomings of BCF in estimating secondary fragmentation as it is based on rule of thumb to estimate how rocks fragments during flow. Furthermore, the model does not consider the rock’s fracture mechanics, or ...
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Get Price2019-6-14 · the rock fragments is expected within the first 50 m of draw from the drawpoints and the fragment size distributions may be closer to the primary fragmentation. The observations of fragmentation at the drawpoints in a block cave mine in Indonesia during the period from 2004 to 2007 were used to validate the outputs from the BSE program.
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Get Pricerock size distribution using input data as: primary frag-mentation outcomes, aspect ratio of blocks, block strength, ... When a block is under breakage in BCF, it is split into two new equal
Get Price2017-7-3 · BCF also considers the rounding of block and fine material generation. Although it is being used around the globe, there are several shortcomings of BCF in estimating secondary fragmentation as it is based on rule of thumb to estimate how rocks fragments during flow. Furthermore, the model does not consider the rock’s fracture mechanics, or ...
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Get Price2019-6-14 · the rock fragments is expected within the first 50 m of draw from the drawpoints and the fragment size distributions may be closer to the primary fragmentation. The observations of fragmentation at the drawpoints in a block cave mine in Indonesia during the period from 2004 to 2007 were used to validate the outputs from the BSE program.
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Get Price2011-7-5 · The Palabora block cave was originally designed for 30,000 t/d mined from 20 crosscuts. Current target tonnages range from 32,000 to 34,000 t/d. Originally, the mine was using a daily draw order system developed by Robin Kear. This was replaced in 2004 with Gemcom s PC-BC and CMS systems, the latter being used for the daily draw order.
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Get Price2011-7-5 · The Palabora block cave was originally designed for 30,000 t/d mined from 20 crosscuts. Current target tonnages range from 32,000 to 34,000 t/d. Originally, the mine was using a daily draw order system developed by Robin Kear. This was replaced in 2004 with Gemcom s PC-BC and CMS systems, the latter being used for the daily draw order.
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Get Price2015-9-23 · Fragmentation Prediction. Fundamentals of Block Caving Geomechanics May 5-9 2008. Definitions Primary fragmentation the fragmentation defined by the blocks in the vicinity of the cave back as they separate from the cave back when the undercut is mined and caving is initiated. Secondary fragmentation the fragmentation produced in caved ore or rock during residence in the ore column …
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Get Price2015-9-23 · Fragmentation Prediction. Fundamentals of Block Caving Geomechanics May 5-9 2008. Definitions Primary fragmentation the fragmentation defined by the blocks in the vicinity of the cave back as they separate from the cave back when the undercut is mined and caving is initiated. Secondary fragmentation the fragmentation produced in caved ore or rock during residence in the ore column …
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Get Price2009-12-9 · A similar fibre scintillation block array is also used on the D-100 system which relies on the use of an array of CCD cameras to collect the scintillation light from the 40 x 40 cm 2 detector area, see Figure 5. The light from the array is effectively split into four segments by using a multiple mirror in the shape of a pyramid. The light from
Get Price2015-9-23 · Fragmentation Prediction. Fundamentals of Block Caving Geomechanics May 5-9 2008. Definitions Primary fragmentation the fragmentation defined by the blocks in the vicinity of the cave back as they separate from the cave back when the undercut is mined and caving is initiated. Secondary fragmentation the fragmentation produced in caved ore or rock during residence in the ore column …
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