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Manager, Basundra Open cast Project (MCL); Sri M. Majhi, Sr Under Manager, Ananta Opencast Project (MCL) and Sri P. K. Mishra, Under Manager, Kalinga Opencast Project ... efforts to introduce mechanization in the opencast mines, blasting continue to dominate the production. Explosives contribute currently about 5% of the direct cost of ...
Burden movement plays very important role in the bench blasting for the effective utilization of the explosive energy. The optimum burden for a blast face varies with the nature of the strata and explosive quantity & quality. There are various experimental and empirical approaches for the estimation of optimum burden. However, there is a need for the site …
.Key Words: Optimization, Drilling, Blasting, Opencast mine, Blast model, Explosives, Machinery. 1. INTRODUCTION Rock breaking by drilling and blasting is the first phase of the …
The blast furnace appeared in Europe in the 15th century when it was realized that cast iron could be used to make one-piece guns with good pressure-retaining properties, but whether its introduction was due to Chinese influence …
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 …
Both units now comprise five underground mining areas, each with a hoisting shaft, while WCM also includes an open-cut mine. Overall capacity is approximately 5.8Mtpa of run-of-mine ore. Underground, Samancor relies mainly on room-and-pillar mining, typically with low-angle adits connecting to a horizontal access level.
As regarding, this research aims to develop an ANN model for predicting blast-produced PPV at an open-pit coal mine of Vietnam (Fig. 1). Explosives used at the mine are mainly ANFO with an explosive capacity of 1360–6700 kg. The mine used non-electric delay blasting method for fragmentation of rock. The geologica…
Open-pit mining is a type of surface mining used to extract coal, gold, and other minerals. It creates immense water and air pollution, disfigures landscapes, and destroys habitats.
Drill & Blasting. We offer comprehensive mineral mining services, including exploration, extraction, and processing of various minerals. Open Cast Mining. Our open-cast mining services involve extracting minerals from the surface …
Keywords: Blasting; Environment; Open Cast Mining; Flyrocks; Drilling Introduction Blasting is the most accepted and practiced technique for the breakage of rock. During blasting, the energy transformation takes place in the explosive. Rock breakage during blasting process is accompanied by the generation of ground vibrations, noise, dust ...
Drilling and blasting are the two most significant operations in open pit mines that play a crucial role in downstream stages. While previous research has focused on optimizing these operations as two separate parts or merely in a specific parameter, this paper proposes a system dynamic model (SDM) for drilling and blasting operations as an interactive system.
The blasting operations play a pivotal role in the overall economics of open-cast mines. The blasting subsystem affects all the other associated subsystems, i.e. loading, …
1. Introduction. At present, drilling equipment with 200-mm hole diameter and above is widely used in large open-pit mine. The blasthole diameter has significant effect on rock fragmentation, since it is the primary blast design parameter and has influence on the choice of burden, spacing, stemming length, etc. [1], [2], [3].In order to choose the proper blasthole size …
India is among the top producers of iron ore in the world with the total resources of over 33.276 billion tonnes. 2 India is the third largest steel producer and fourth largest iron ore producer in the world. 1 According to the data available with Indian Bureau of Mines (IBM), there were 296 reporting mines in 2016-17. Among them, 34 mines were ...
For this purpose, the data obtained from 90 blasting operations in the Chadormalu iron ore mine are collected by considering the parameters of the blast pattern design.
In order to overcome these dangers, the Open Cast Projects have been developed. In addition to the advantage of safety, the manpower requirement in these projects is also less as compared to that for the underground mines. Machines only in Open Cast Mines carry out almost total work. The most vital operation in open cast coal mining is blasting.
Controlled blasting has become imperative in many Indian open cast mines as the workings benches are within/approaching the danger zone of 500 m. Accordingly the blasting impacts in the form of ground vibration, flyrock and air overpressure/noise should be...
The blasting operations play a pivotal role in the overall economics of open-cast mines. The blasting subsystem affects all the other associated subsystems, i.e. loading, transport, crushing and ...
In open-pit mining, blasting operation is one of the essential business processes of open-pit mining technology 19,20,21,22,23, which is related to the production capacity and economic benefits of ...
In an open cast mining of Iron ore; Exhaust Emission (EE), during transporta- tion of ore, overburden, etc. Ambient Dust (AD), Noise (N) & Fly Rock (FR), Emission of gasses during blasting (SO
This document provides guidance for the assessment and certification of Blasting Certificate holders for opencast mines. It outlines the syllabus, …
Drilling and blasting play a vital roles in open cast mining, these operations do not affect the cost of production directly but the overall operational cost (Busuyi, 2009). The …
Estimating the costs of blasting operations is an important parameter in open-pit mining. Blasting and rock fragmentation depend on two groups of variables. ... 30, (3), 208–215. Monjezi, M., Rezaei, M., Yazdian Varjani, A. 2009. Prediction of rock fragmentation due to blasting in Gol-E-Gohar iron mine using fuzzy logic, Int. J. Rock Mech ...
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 …
As the diagrams and table indicate, the empirical relation defined by Konya [15] and shown below presents the least variance with the blasting patterns used in the main pit of Chadormalu mine: (1) B = 3. 15 D (ρ e / ρ r) 0. 33 where B is the burden (foot), ρ e is the specific gravity of explosive, ρ r is the specific gravity of rock, and D is the diameter of explosive (inch).
The line drilling is established at the mine for dragline bench blast. The mining through blasting is now being operated more safely as the line drill resulted in to more stable highwall and implementation of electronic delay detonators in dragline benches providing desirable outcomes. 1.1 Principle of line drilling
Mining and processing of iron ore. The Sishen mine employs the open-pit mining method involving drill and blast. The mined ore is trucked to the nearby beneficiation plant. The mine uses a fleet of P101-4100 shovels and 960 trucks. Strong performance of the 2,800 shovel fleet in 2019 allowed the mine to exceed equipment efficiency targets.
Blasting has been one of the most important contributors of mining since the start of mineral extraction and excavation. Along with fragmentation of the rocks, blasting also …
Mining is a geotechnical industry. Geologist explore the economic mineral deposits for mining. A lot of methods are adopted to exploit the valuable economic mineral resources through open cast ...
This document provides guidance for the assessment and certification of Blasting Certificate holders for opencast mines. It outlines the syllabus, assessment guidelines, score sheets, and sample questions and answers. …
