Blast-Casting Mechanism and Parameter Optimization of a ...

During the research on bench deep-hole blast casting, the blast-casting parameters are directly related to the blast-casting results, so it could reveal the mechanism for improving the effect thereof. Based on the principle of the plane charge method, both the stress wave and detonation gas were considered to affect rock fragmentation and casting, a model of overburden fragmentation and ...

Optimization of Blasting Parameters in opencast Mines

Drilling and blasting are the major unit operations in opencast mining. Inspite of the best efforts to introduce mechanization in the opencast mines, blasting continue to dominate the production. Explosives contribute currently about 5% of the direct cost of production and if the

Explosives -

Our Explosives division markets and distributes commercial explosives, a wide range of specialised blasting accessories, a diversified range of bulk explosives used in underground mines, opencast mines and quarries, as well as supplying value add services to Southern Africa's leading mining …

New technology to reduce coal mine operating costs

Australian mining technology company Emergent Mining Technologies (EMT) launched its Reduced Energy Mining System (REMS) in May to increase the energy efficiency of opencast coal mines. The ...

Blasting in Open Cast Mines - Mining Technology - Blasting ...

Aug 24, 2009· Explosives and Blasting in Mines to Increase the Production, control Fragmentation and Reduce Ground Vibration. Mining Technology,

Environmental impact analysis of heavy blasting in large ...

Explosives and blasting techniques play a significant role in efficient opencast mining operations. There have been constant technological developments towards safer, faster, economical and more ...

Chapter 8 BLAST DESIGN

The explosive column illustrated in Figure 8-6 on the right will produce the best fragmentation. EXPLOSIVES ECONOMICS The economic analysis of the use of explosives is an important part of blasting operations in mining and construction. Explosives are energy, and the efficient use of this energy is a major factor in keeping rock blasting

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opencast blasting Blasting practices in underground mines has limited flexibility due to many safety criteria, statutory and field constraints. This has narrowed the scope of major modifications in the solid blasting design vis-à-vis the efficiency and yield per However, it is high time to balance the Opencast and underground mine production, in

List of Equipment Used in Opencast Coal Mining | Mining

The machines deployed in the opencast mines, at the crushing and ore preparation plant have to be of matching capacities. At Kudremukh Iron Ore Project, one of the largest opencast mines in India, the capacities of some of the machines are : shovels 10.7 m 3, production trucks 108 te, front end loaders 10 m 3, electric drills for 310 mm dia ...

Optmization of blasting parameters in open cast mines

Aug 20, 2016· Optmization of blasting parameters in open cast mines ... patterns must be applied for optimal fragmentation of rocks to minimize the cost of production . it leads to an increase in economic efficiency for exploitation of mineral resource. ..., Class—8 : Liquid Oxygen Explosive (LOX) The commonly used explosives in the opencast mines of our ...

Autonomous drills improve safety for contract miner

Basil Read Mining B&E will take delivery of the first unit in the first quarter of this year and, once commissioned, will begin trial operations at an opencast mine in Botswana. Advertisement

Effects of soil and topographic ... - Scientific Reports

How to cite this article: Wang, J. et al. Effects of soil and topographic factors on vegetation restoration in opencast coal mine dumps located in a loess area. Sci. Rep. 6, 22058; doi: 10.1038 ...

Quality and Performance of Permitted Explosives and ...

an explosive system, two main aims are to maximize safety and to minimize the total cost of mining. Although, stiff competition amongst the explosive suppliers has brought the prices of the explosives items down, but there has been concern over the quality of the explosives being supplied to the mining industry. Therefore,

Explosives and Blasting in Opencast Mines – Mining and ...

May 28, 2009· This entry was posted in blasting, explosives, mining and tagged blasting, blasting in mines, explosives, mines, mines blasting. Bookmark the permalink . Post navigation

Blast Hole Drilling: The Basic Process | RPM Drilling

Blast hole Drilling is a technique used in mining whereby a hole is drilled into the surface of the rock, packed with explosive material, and detonated. The aim of this technique is to induce cracks in the inner geology of the surrounding rock, in order to facilitate further drilling and associated mining activity.

Enhancement of Drilling & Blasting efficiency in Opencast ...

underground and opencast mines / quarries, it has taken a major leap forward in enhancement of Techno-Economics advantages in working of mines. Drilling and Blasting is the most important activities in working of any mines. In particular, electronics are bringing a level of unprecedented precision to the process of breaking rock in the mines.

Optimization of Blasting Operation in Opencast Mine

Because modern mines require large amounts of explosives throughout the mine's life, the cost of blasting operation can be significantly reduced by reducing the cost of explosives. Key Words: Optimization, Drilling, Blasting, Opencast mine, Blast model, Explosives, Machinery. 1. INTRODUCTION Pre commencement of topic to introduce MINING

Small steps: safety and efficiency in mining explosives

Aug 23, 2011· Greg Sutton: Doe Run has educated explosives camp participants since Dr. Worsey introduced it to three students in 2004. By 2008, Doe Run and Dr. Worsey grew enrollment to three camps of 20 students each. Working with the mining engineering department at MS&T is a …

How To Improve E plosive Efficiency In Opencast Mines

How To Improve E plosive Efficiency In Opencast Mines For each project scheme design, we will use professional knowledge to help you, carefully listen to your demands, respect your opinions, and use our professional teams and exert our greatest efforts to create a more suitable project scheme for you and realize the project investment value and ...

ASK MINING: Blasting Practices at Open Cast Mines

Mar 02, 2012· 5. Depth of sub-grade drilling: In coal mines the length of sub-grade drilling for a bench height 8m is generally 0.3m. 6. Explosives: In Indian coal mines nitroglycerine based explosives, slurries, Ammonium Nitrate and Fuel Oil Mixture(ANFO) and Liquid oxygen type Explosive(LOX) are the main explosives which are used.

Advanced Techniques in Drilling and Blasting by Partha D ...

Dec 22, 2009· NOTE ON ELECTRONIC DETONATORS The mining and explosive industries rapidly adopting new technology, in all forms, in order to improve overall performance, efficiency …

Study of efficiency and productivity growth in opencast ...

behind productivity growth in opencast mining, while efficiency growth has been the most important factor in growth of underground mine productivity. Underground mines seem to have adopted a more efficient practice of operation to compensate for the lag in technical change. On the other hand, operational efficiency of opencast mines seems to ...

v118n5a1 Optimization of the load-and-haul operation at an ...

industry. Locally, the overall mining cost inflation indices shows a yearly increase of 2% over the national consumer inflation. In order for coal mines to survive and mine profitably, they need to capitalize on the opportunity to improve their productivity and focus on one factor they can control: operational efficiency.

how to improve explosive efficiency in opencast mines

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

Cost Of Production For Opencast

· as the opencast mining is efficient and cost-effective in the exploitation of mineral resource [1], more and more opencast mining are emerging with the rapid economic and technological development [2, 3]. at present, the opencast coal mine production occupies about 12% of the total production in china [2]. the way into the ore body ...

HANDLING OF MISFIRES IN MINES – Mining and Blasting

Dec 30, 2011· HANDLING OF MISFIRES IN MINES: Dealing with it is potentially most dangerous activity. 1. INTRODUCTION – Misfire means the complete or partial failure of a blasting charge to explode as planned.The explosive or pyrotechnical products that remain in the ground or in the muckpile might be triggered by any mechanical effect during the digging, milling or crushing stages of the mining …

"Application of plastic funnel in blast hole to improve ...

Publication Details. Ashutosh Bhaskar, Alok Kumar Baranwal, Praveen Ranjan, Tapan Kumar Jena, Mayank Shekhar and Debaprasad Chakraborty, Application of plastic funnel in blast hole to improve blasting efficiency of opencast coal mine at West Bokaro, in Naj Aziz and Bob Kininmonth (eds.), Proceedings of the 2019 Coal Operators Conference, Mining Engineering, University of Wollongong, …

explosives – Mining and Blasting

Jun 14, 2018· A change in the configuration or type of initiation, priming or boosting can lead to a significant increase in blasting efficiency. The terms "primer" and "booster" are often confused. Primer is a unit of cap-sensitive explosive used to initiate other explosives or blasting agents.

A system-wide approach to minimize the operational cost of ...

Dec 12, 2018· The production cycle of open-cast coal mines generally includes drilling, blasting, loading, hauling and coal preparation activities. Individual optimization of these activities does not mean that the whole system is optimized. This paper proposes a cost model considering all activities in mining cycle and system-wide approach to minimize the total mining cost of bench production.

CIL to develop 55 new coal mines in next 5 yrs: Minister ...

Nov 20, 2019· CIL to develop 55 new coal mines in next 5 yrs: Minister ... Dipka & Kusmunda opencast mines (and) introduction of surface miners in opencast mines to improve operational efficiency and to cater ...

Application of plastic funnel in blast hole to improve ...

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

How digital innovation can improve mining productivity ...

The mine made some small changes to increase the flow of oxygen, which, as predicted, generated a significant yield gain. The increase in yield translated into a sustainable $10 million to $20 million annual profit improvement, with no need for substantial capital outlays or reorganizations.