Design of controlled blasting (pre-splitting) in Golegohar iron ore mine, Iran S. R. Dindarloo*1, N.-A. Askarnejad2 and M. Ataei2 Pre-splitting is a controlled blasting technique with applications ...
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Drill depths are accounted for more accurately, making it easier to assign the right amount of explosives in blasting. New GPS-enabled applications have improved strata …
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— Abstract. Pre-splitting is a controlled blasting technique with applications in open pit mines. The main objectives of pre-splitting in open pit mining are: preventing/controlling back-break; controlling excessive ground vibrations; and filtering the effects of explosive gases from production blasting.
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Finally, the conclusion of the case study is summarised. Case study Golegohar iron ore mine is located in southern Iran, 50 km from Sirjan, in southwest of Kerman Province. This iron ore complex includes six known reserves and is one of the largest producers and exporters of iron concentrate in the country; it is mined by open pit mining.
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— The drilling and blasting method realizes rock fragmentation through mechanical drilling and explosive blasting and has consistently been an important construction method in related fields, such ...
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Reference blasting fundamentals, properties of explosives and blasting principles in this section. For more specific requirements, reach out to our Orica specialists for an in-depth discussion today.
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— Blast furnace - A large structure in which iron ore is smelted into iron metal. Blasthole: A hole drilled for the purpose of blasting rather than for exploration or geological information. Blister copper - A crude form of copper (assaying about 99%) produced in a smelter that requires further refining before being used for industrial purposes.
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Iron Ore Processing, General 1 Introduction Iron is the world's most commonly used metal–steel, of which iron ore is the key ... Rock breakage is usually accomplished by drilling and blasting for consolidated materials and ripping or direct removal by excavators for unconsolidated soil and/or decomposed rock, followed by materials handling ...
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Reduce drill and blast costs. Advanced blasting technology and clever blast design can improve the utilisation of the drilling fleet and reduce capital and operating costs without compromising productivity. Matching explosive energy to geology enables expanded patterns without affecting fragmentation.
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— During the analytical analysis of the blasting data and the comparison of their results, which was performed to determine the change in the cost of blasting depending on the drilling angle, and it ...
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Making iron and steel from iron ore requires a long process of mining, crushing, separating, concentrating, mixing, agglomeration (sintering and pelletizing), and shipping to steel …
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— [Show full abstract] and blasting operations in iron ore open pits have 30% of wastes and more. At the same time, storaging, transportation and use of explosive materials is related to the ...
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— The successful delivery of a complex drill and blast operation at an iron ore project in Western Australia's Pilbara region has built a blueprint for best practice blasting in close proximity to ...
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Theory of rock blasting. 3. Practical Challenges with rock blasting. 4. Blasting Practices at large opencast coal mines. 5. Charge factor and dimensional parameters for excavation in openpit iron ore mines. 6. Excavation using drilling and blasting in limestone quarries. 7. Rock blasting for laying foundation of an industrial establishment.
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— The experience of blasting with 311 mm diameter holes on 14 m high benches at Kudremukh Iron Ore Project has revealed that expanded drillhole patterns have a tendency to crater. Drilling holes too close was not feasible as the drilling cost and powder factor increased. The larger diameter holes also resulted in higher consumption of …
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— 's base drill control systems found in its 320XPC, ZR77 and ZR122 blast drill models already contain automated capabilities such as Auto Drill, Auto Level and Auto Mast Angle (a ZR-specific feature) applications that support tele-remote operations.
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— • Massive deposit, flat terrain (e.g., iron-ore or sulfide deposits), as shown in. Figure 2. ... 2.2 Drilling and blasting. The ore deposit can be mined by means of drilling and blasting in ...
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Opencast Blasting. We have successfully completed mining projects which involved the extraction of valuable minerals such as diamonds, iron ore and manganese. Our skilled staff and blasting techniques will deliver cost …
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— The services contract with PRG relates to the provision of drilling and blasting services at GWR Group Ltd's Wiluna West iron ore project, where PRG is also a contractor. It will see DDB provide services from November for Stage 1 of the C4 iron ore deposit, part of Wiluna West.
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— 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 …
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— 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 …
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— A general flow of production would be drilling blast holes and blasting. Then the fractured rock and ore would be loaded and hauled to the primary crusher to be crushed and undergo comminution. Next, it would be transported to the next stage of that mine's processing setup. Potential issues mines may face could be at the drilling and blasting ...
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— "Being able to correlate rock type, ore grade, drill penetration rates and blast design allows more informed value-in-use decisions to be made," Maptek blast accuracy solutions manager Mark ...
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— Once prepared, the mine site is cleared of workers and equipment, and the blast is detonated. Each of the holes is detonated just a millisecond apart, resulting in a pile of crude iron ore that is broken apart to a minus 2 m x 2 m size. The wide holes in the ground created by drilling, blasting, and ore removal are referred to as 'open pits'.
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— the blasting directly affects not only the drilling, displacement, and the ore control needed but also the needs and requirements of the crushing and grinding, i.e., mine to mill. There
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The results of this study show that the drilling pattern with a spacing of 5 m, burden 4 m, hole depth 10 m, and hole diameter 15 cm is the most suitable one. The stemming length and powder factor of the sug-gested pattern are 2.3 m and 2.6 gr/cm3, respectively. Keywords: Drilling and blasting pattern; Sangan Iron Ore Mine; AHP; TOPSIS ...
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— The results of this study show that the drilling pattern with a spacing of 5 m, burden 4 m, hole depth 10 m, and hole diameter 15 cm is the most suitable one. The stemming length and powder...
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Blasting performance is influenced by mechanical and structural properties of the rock, on one side, and blast design parameters on the other. This paper describes a new methodology to assess rock mass quality from …
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— The activities at this truckless mine consist of drilling and blasting, loading and primary crushing. In this study, the calibration of the mine-to-crusher model was based on rock fragmentation from the …
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