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Blast optimization at Kriel Colliery J r n a - SAIMM. the powder factor. When poor fragmentation occurs, the powder factor for the next blast is increased. Currently, the powder factor on the overburden is approximately 0.7 kg/BCM instead of the recommended 0.55 (Levings, 2008).

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Blast optimization at Kriel Colliery J r n a. Blast optimization at Kriel Colliery [5] Where: Af = rock factor Mh = mass of explosives per hole Vo = volume blasted per hole (m3) RWS = relative weight strength (relative to ANFO as 100) Next, x c is calculated by: [6] Using these equations together is known as the KuzRam model (Cunningham, 1986).

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Quantitative assessment of rock texture and correlation with drillability and strength properties Article in Rock Mechanics and Rock Engineering 20(1):57-85 · January 1987 with 88 Reads

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Oct 01, 2014· South Africa's coalfields — A 2014 perspective. Author links open overlay panel P. John Hancox a Annette E. Götz b c. ... The present name was proposed by N.J. Beukes (personal communication to the SACS Karoo working group) and derived from the village of Clarens in the north-eastern Free State. ... Floor rolls on the No. 2 Seam at Greenside ...

Saimm 201809 sep by SAIMM -

SAIMM Branch Chairpersons. Northern Cape Branch Fabian Clint Nieuwenhuys. Fabian Nieuwenhuys has been a Member of the SAIMM since 2014 and a member of …

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Blast optimization at Kriel Colliery J r n a - SciELO. surface and underground mining methods The underground operation was started in 1975 and is currently divided into six mechanized sections The opencast was commissioned in 1978 and consists of two dragline pits and a mini-pit Project background General information on blasting operations ...

Design Optimization Blast

Blast optimization at Kriel Colliery J r n a SAIMM to asses blast design variations. ... A literature study was completed on blast optimization and how to calculate the results of a blast.

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E c o n o m i c s of c o p p e r p r o c e s s i n g In 1835, the United Kingdom was the world's largest copper producer, mining around 15,000 t/y, just below half the world production. This leading position was held until the mid-1860s when the copper mines of Devon and Cornwall became exhausted and the great flood of American copper began to ...

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Blast optimization at Kriel Colliery J r n a - SciELO. surface and underground mining methods The, simulation results, it could be seen that a change of blast design could be beneficial As an example, smaller drilling patterns were, A literature study was completed on blast optimization and how to calculate the results of a blast

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... The use of limestone as a cheaper alternative was explored by Maree (1994), a combination of lime and limestone by Maree (1994) and Geldenhuys et al. (2001 ...

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Transcript. 1 Physicochemical Problems of Minera Processing 51(2), June l, 2015 Instructions for preparatlon of manuscripts lt is recommended that the following guidelines be followed by the authors ofthe manuscripts : original papers dealing with principles of minera processing and papers on technological aspects o f minera processing will be published in the joumal which appears twice a year ...

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Blast optimization at Kriel Colliery J r n a - SAIMM. General information on blasting operations This study was conducted in both Pit 5 and Pit 6. The overburden in Pit 5 is drilled on a 10 m x10 m blast hole pattern and a bench height in excess of 30 metres. The blast holes are loaded with explosives to an 8 metre stemming.

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Blast design in opencast mining SlideShare. Oct 12, 2017 · Blast design in opencast mining 7 Blasting There are two types of variables in blasting design 1 Uncontrollable variables geology, rock characteristics and local specifications 2 Controllable variables Burden and spacing, Hole diameter, hole depth, Number of holes in the blast, Sub …

Saimm 201601 jan by SAIMM -

Jan 01, 2016· ! N.A. Barcza R.D. Beck J.R. Dixon M. Dworzanowski F.M.G. Egerton H.E. James ... Dr Nelson illustrated the extent of the work that has been done in blast …

THE INTRODUCTION OF MULTI-TASKING THE …

The Kriel Colliery underground operation has been one of the leaders in coal production using drill and blast mining methods. This has been primarily due to the good mining conditions and high mining tempos. During the late 1980's there was a drive to increase productivity in the South African coal industry in order to

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Blast optimization at Kriel Colliery J r n a - SAIMM. the powder factor. When poor fragmentation occurs, the powder factor for the next blast is increased. Currently, the powder factor on the overburden is approximately 0.7 kg/BCM instead of the recommended 0.55 (Levings, 2008).

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Blast optimization at Kriel Colliery J r n a - SciELO. 10 m x10 m blast hole pattern and a bench height in excess of 30 metres. The blast holes ... can be done by determining the cost of each mine function (e.g., drill and blast, loading, hauling, etc.) related to the ...

Powder Factor For Aggregate Mining - ilovenysa.eu

In this case, the increased powder cost is . of blast optimization must consider mining and milling costs. Figure 1 Figure 2 Figure 3 . Get Support Online (PDF) A new mining method - researchgate. A new mining method. . A cell powder factor defines the local powder factor in a simple geometric procedure that accounts for the charge in each ...

blast design optimization surface and underground - fo-ca.nl

Blast optimization at Kriel Colliery J r n a - SciELO. surface and underground mining methods The, simulation results, it could be seen that a change of blast design could be beneficial As an example, smaller drilling patterns were, A literature study was completed on blast optimization and how to calculate the results of a blast

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and N Wormald 11 Economics of Mine Planning and Equipment Selection I C Runge 13 More than Coal Mining J Tourek 23 The Next Challenge in Optimising Mining Operations J Whittle 25 Advances in Surface Mine Planning Design and Computer Application A Simulation Approach for the Comparison of In-Pit Crushing and Conveying and Truck-Shovel Mining Methods

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Also, particle size e n l a r g e m e n t m e t h o d s, and fine-coal h a n d l e a b i l i t y d e p e n d on coal surface properties. C o a l - w a t e r fuels (or c o a l - w a t e r slurries) constitute p r o b a b l y the m o s t i n t e r e s t i n g industrial a p p l i c a t i o n of c o l l o i d chemistry.

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Blast optimization at Kriel Colliery J r n a - UPSpace, Kriel Colliery (Anglo Coal) is situated on the northern margin of the Highveld Coalfield area in Mpumalanga, 55 km south of Witbank The. KRIEL COLLIERY, Ga-Nala | Brabys 2018. Looking for KRIEL COLLIERY in Ga-Nala? Call or Enquire Now!

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Blast optimization at Kriel Colliery J r n a - SciELO. ... Colin R. Ward ©Encyclopedia of Life Support Systems (EOLSS) • Coal Marketing: the procuring of markets or development of facilities to use the coal that will come from the mine over its working life; • Mine Development: the acquisition, construction and commissioning of the plant ...

blast optimization at kriel colliery j r n a saimm

Blast optimization at Kriel Colliery J r n a SAIMM. blasting results while changing various parameters. From the simulation results it could be seen that a change of blast design costs explosives cost and the explosive properties were obtained from the suppliers. Blast parameter variations were simulated and

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Blast optimization at Kriel Colliery J r n a - SciELO. Mine background and general information Kriel Colliery (Anglo Coal) is situated on the ... blast, contamination of coal or loss of coal. A simulation was developed in Microsoft Excel to model ... to asses blast design variations.

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Mar 31, 2009· 329 New Add a cellphone number to the cellphone directory here. ... Du Toit N J LPG Autogas Cape cc Cape Town 021 948 9399 Not available 431 ... 48 Mr Kriel Francois CEO Ma'emsa (Pty) Ltd 011 674 2772 083 225 2116 011 672 1786 [email protected] 63 Die Ou Pad, Florida Extention 3, Gauteng 1709, South Africa Electricity savings ...

Open Pit Planning - saimm.co.za

Rapporteur: Mr P. R. JANISCH Papers: Optimum design of an open pit by D. A. Phillips An open pit design system for stratiform ore bodies by L. A. J. Pronk van Hoogeveen, J. R. Cutland and M. Weir An open pit design model by R. H. Robinson and N. B. Prenn The Otairman in opening the session highlighted the current

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Blast optimization at Kriel Colliery J r n a. General information on blasting operations This study was conducted in both Pit 5 and Pit 6. The overburden in Pit 5 is drilled on a 10 m x10 m blast hole pattern and a bench ... breakdowns, and poor drilling and blasting results on the adjacent blast, contamination of coal or loss of coal.