how to improve e plosive efficiency in opencast mines

Optimization of Blasting Parameters in opencast Mines

1. Introduction. Rock fragmentation distribution influences a range of mining and milling processes including load and haul rates, crushing and grinding performance and ore recovery in beneficiation processes (Michaud et al., 1997).In opencast mining, where blasting is employed for excavation, the overall cost effectiveness of the production operations is compatible with optimization of ...

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explosive energy to improve blasting efficiency and he has found that there was an increase in explosive energy transmitted to rock mass, resulting in better fragmentation. Rampura Agucha opencast mine of HZL, India and Aditya Limestone mine of Aditya Birla Group, India are also

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(PDF) New blasting techniques for productivity …

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blasting pattern in opencast iron mines

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2015-7-14 · Study of efficiency and productivity growth in opencast and underground coal mining in India: a DEA analysis Mudit Kulshreshtha , Jyoti K. Parikh Indira Gandhi Institute of De elopment Research, Gen.A.K. Vaidya Marg, Goregaon East ,() Mumbai 400065, India Abstract This paper attempts to study efficiency and productivity of coal mining in the ...

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2019-3-28 · explosive energy transmitted to rock mass, resulting in better fragmentation. Rampura Agucha opencast mine of HZL, India and Aditya Limestone mine of Aditya Birla Group, India are also practicing the usage of plastic funnel in blast hole (between explosive and stemming) to improve their blasting efficiency. THEORY OF PLASTIC FUNNEL

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Drilling and blasting are the major unit operations in opencast mining. In spite of the best efforts to introduce mechanization in the opencast mines, blasting continue to dominate the production. Beside the production in open cast …

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Productivity Improvement in Underground Coal Mines …

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