BLASTING IN FIRE AREAS IN OPENCAST MINES | Mine …

2022-5-16 · Conditions for conducting blasting in fire areas in an opencast coal mine (1) Blasting operations shall be carried out under direct supervision of an Assistant manager in charge of Blasting operations. (2) Persons trained in the job of blasting in Fire area only shall be deputed for the said operation. (3) No explosive other than slurry or emulsion explosives shall be used. (4) …

METHODS AND TECHNIQUES FOR ENERGY EFFICIENCY …

2021-7-30 · to improving energy efficiency of mining and haulage opera-tions in opencast mines, the comprehensive energy audit was carried out for the coal mines of Shubarkol-Komir LLP. The West and Central opencast mines of Shobarkol-Komir use dump trucks – 9 BelAZ-75306 machines with service life Fi g. 1. Concept of ener y efficiency in opencast mines.

Operational safety for mining and quarrying

2021-12-13 · GooD PrACTICe GUIDeLINeS // HEALTH AND SAFETY AT OPENCAST MINES, ALLUIAL MINES AND QUARRIES 72 The use of explosives to break rock at a mine or quarry is a hazardous process. The blasting procedure must be managed to protect workers and the general public from the adverse consequences of a blast. This section describes:

How Mining Companies Improve Production Efficiencies …

2018-9-25 · The Laiva gold mine located in Finland, the Nordic world''s most prolific gold producing jurisdiction, offers a good example of a mining operation crippled and closed by poor mining practices ...

how to improve explosive efficiency in opencast mines

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 blastingget price

Health and Safety at Opencast Mines, Alluvial Mines and …

2021-12-13 · GooD PrACTICe GUIDeLINeS // HEALTH AND SAFETY AT OPENCAST MINES, ALLUVIAL MINES AND QUARRIES 14 > quarries in a forest, on a farm or on Crown or public land (eg council reserves or river beds) regardless of whether

Explosives Engineers'' Guide

2020-4-22 · the detonation of explosives. Back break Rock broken beyond the limits of the last row. Blasthole pressure The pressure which the gasses of detonation exert on the blasthole wall. Burden The distance between adjacent rows. Charge weight The amount of explosive charge in kilograms. Column charge A continuous charge of explosives in a blasthole.

Attributes affecting production and productivity in …

2016-12-28 · Ramulu, M., Sangode, A.G. and Sinha, A. (2012) ''Blast optimisation with in situ rock mass characterization by seismic profiling at an opencast coal …

Energy efficiency in opencast mine production systems; …

2009-3-15 · @misc{etde_21169659, title = {Energy efficiency in opencast mine production systems; Energieeffizienz in Tagebauproduktionsanlagen} author = {To Baben, Ralf, Niemeyer, Juergen, and Krudewig, Walter} abstractNote = {The ambitious targets for the reduction of CO{sub 2} emissions in the EU and the fundamental trend of increasing prices for primary …

Mining Efficiency

2015-9-15 · Mining for efficiency How a focus on equipment performance promises to unlock billions of dollars in productivity returns for miners. August 2014. ... best practice would increase annual output by 6.1 million tonnes and generate cost savings of between $1.50-2.00 per tonne. (ie a return of $9 – 12 million per annum

Optimization of Blasting Operation in Opencast Mine

2020-5-22 · 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

Development and Application of Blast Casting Technique …

Blast casting is a high-efficiency technique applied in surface mines for overburden removal and results in stripping cost savings. According to ballistic theory and center-of-mass frame basic movement principles, key factors influencing blast casting effect were analyzed, which include bench height and mining panel width, inclined angle of blast holes, explosive unit consumption …

A system-wide approach to minimize the operational cost …

2018-12-12 · 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 …

Increasing productivity, efficiency and safety in mining

Mining is currently seeing the start of what will be the great convergence of IT and operational technologies. Many observers have touted it as the foundation for the industry''s next technological step change, which will be focused on an effort to facilitate productivity gains, efficiency, and safety. A study by consultancy firm McKinsey ...

Chapter 8 BLAST DESIGN

2022-4-21 · 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

8 strategies for reclaiming efficiency and lowering costs in …

2015-2-5 · Here are some strategies to consider, from Deloitte''s "Mining spotlight on sliding productivity and spiraling costs.". 1. Strengthen mine planning. Refocus on high quality production by increasing cut off grades. Reduce capital expenditures in properties with lower production potential and shorter mine lives.

Life cycle assessment of opencast coal mine production: a …

Both dust and global warming were mainly affected in mining stage in Yimin opencast coal mine based on comprehensive analysis of environmental impact. Some economic and feasible measures should be used to mitigate the environmental impacts of opencast coal mine production, such as water spraying, clean transportation, increasing processing ...

Skip-Conveying in Opencast Mines: Approach to optimise …

 · Skip-Conveying in Opencast Mines: Approach to optimise Cost and Energy Efficiency in Hard Rock Mines bulk solids handling Vol. 32 (2012) No. 5, pp. 16−21 Article Download:

Optimization of the cycle time to increase productivity at …

2019-9-3 · opencast mining, cycle time, optimization, productivity. Introduction The aim of the project was to increase Ruashi Mining''s productivity by 39%, from about 7.537 Mt of broken material mined to 12..367 Mt targeted in 2017. Background Ruashi Mining is a copper (main commodity), cobalt (by-product), and acid producer located in the

how to improve e plosive efficiency in opencast mines

How To Improve Explosive Efficiency In Opencast Mines . Global mining equipment 2018119global sales of surface mining machinery such as excavators and loaders are forecast to climb 45 per annum through 2022 bolstered by growing strip mining of aggregates coal and other materials the drills and breakers crushing pulverizing and . See More

[PDF] Optimization of blasting parameters in opencast …

Optimization and Determination of Blast Design Parameters for an Opencast Mine. H. Naik, Rahul Kumar. Materials Science. 2018. According to the study of performance analysis of various unit operations on opencast mines, transporting and excavating equipments are primarily dependent upon the blast results, most importantly to…. PDF.

Explosives

2022-7-17 · 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, …

Optimization of Blasting Parameters in opencast Mines

2021-10-6 · complicated, more efficient, and more cost effective than it was before. Singh and Dhillon (1996) pointed out that to optimize the cost in an opencast mine, there is a need to optimize the drilling and blasting parameters. Incase of blasting operations; for optimization of explosives, the first step is to

(PDF) IRJET

The consistent necessity to improve the utilization of costly HEMM and the ... 2395-0072 Enhancing Productivity in Opencast Mines – A Quantified Approach Prashant K. Nayak1, M. Bharath Simha Reddy2, S. Sai Kumar Reddy2, S. Malleshwar Reddy2, N. Chatinaya Sai Ram Reddy2 1 Assistant Professor, Dept. of Mining Engineering, Godavari Institute of ...

Blasting Techniques Used in Underground and Opencast …

2022-7-20 · Pull per round – 1.06 m. Coal yield/kg of explosive – 2.0 te (soligex) Coal yield/detonator – 0.9 te. One driller and two helpers drill 60-70 holes in a shift of 8 hours; one shot firer, 2 explosive carriers and 1 stemming material carrier constitute the blasting crew and fire nearly 60 shots in a shift of 8 hours.

Application of plastic funnel in blast hole to improve …

2020-10-13 · the explosives energy for more breaking of the rock. . Figure 1: Plastic funnel . D. Karakus has studied the impact of stemming plug to maximize the utilization of . et al. 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.

Rock fragmentation control in opencast blasting

2016-4-1 · The Kuznetsov equation relates the mean fragment size to the quantity of explosives needed to blast for a given volume of rock. The Kuznetsov equation is (2) k 50 = A ( V Q) 0.8 Q 1 / 6 where k50 is the average fragment in cm, A is a rock factor, V is the rock volume in m 3 broken per hole (burden × spacing × bench height), and Q is the mass ...

Productivity Improvement in Underground Coal Mines

2013-1-1 · While the coal production from underground mining in countries like China, USA and Australia are about 95, 33 and 20% respectively, India produces only about 15% of coal from underground mines (Prasad 2009). Of the total output of coal from underground mines, more than 90% of coal is obtained by the bord and pillar method, the predominant ...

Opencast Mining (Quarrying): Methods, Advantages & …

2022-7-19 · Opencast mining or quarrying of minerals is easier than mining by underground methods. During quarrying the alluvium and rocks below which the minerals lie, are removed and dumped, in the initial stages, in a place which is not required in future for quarrying, residential or other purposes. The mineral exposed is completely extracted.

How To Improve Explosive Efficiency In Opencast Mines

how to improve e plosive efficiency in opencast mines. Mine Legislation MCQ Multiple Choice Questions Answer . Aug 08 2017 a) To increase the conductance of the earthing b) To reduce the conductance of the earthing. c) To increase the resistance of the earthin d) All of the above.