The method for calculating drilling-and-blasting parameters can be used only during underground mining using emulsion explosives, while determination of stoping operations parameters requires modeling of compression and fracturing zones, studying the changes of emulsion explosives density and mass as well as detonation velocity along the charge ...
Many investigations, concerning the initiation location or detonation direction, have been carried out by various researchers. Long et al. ( 2012) analyzed the usage ratio of the explosive energy under differing initiation locations and its effect on rock fragmentation in his field blasting experiments in an iron mine.
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 …
This paper presents an approach to improve overall blasting efficiency in an iron ore mine. The problems existing in the mines were oversize fragmentation, severe backbreak, frequent secondary drilling and blasting operations, sloping bench faces and irregular bench profiles.
Drill and Blast Engineer. Oct 2022 - Present 1 year 7 months. Kathu, Northern Cape, South Africa. • Company and operation: Kumba Iron Ore (Sishen Mine) • Commodity: Iron Ore. • Work/experience: The purpose of this role is to optimise drilling and blasting processes by monitoring, analysing and implementing changes to achieve optimum ...
In drilling, there is now available advanced use of GPS guided drilling systems that continue to grow and improve precision and effi ciency. Drill depths are accounted for more accurately, making it easier to assign the right amount of explosives in blasting.
The ability to safely execute drill and blast operations in cooperation with ongoing piling, excavation, concrete pouring and ground support activities is important for keeping the project on schedule.
Abstract. Iron ore is regarded as the second most important commodity behind oil. As an essential input for the production of crude steel, iron ore feeds the world's largest trillion-dollar-a-year metal market and is the backbone of global infrastructure. To meet the growing demand for steel products, world iron ore production has increased ...
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 ...
Optimal fragmentation minimizes any negative impact on the mixing (ore and waste) with. the maximum integrity of the wall and the floor of the bench. In spite of this, the output of. the blasting ...
Drilling and blasting are commonly adopted techniques for overburden removal and ore excavation in opencast as well as underground mining operations. Blast hole drilling …
The contract includes mobilization and site establishment, clearing, drilling and blasting, as well as construction of access roads and in-pit facilities.
Practical v alue. Drilling and blasting parameters can be corrected depending on changes of the ore massif stress-
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. This in turn increases the drilling yield, providing more tonnes per drill …
Iron ore sintering is the iron ore powder agglomeration process that changes fine iron ore powder into the lumpy iron-bearing raw material used for blast furnace ironmaking. High …
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 drill-monitoring data to guide blasting in open pit operations. Principal component analysis has been used to combine …
Afrimat Mining Services specialises in mine planning, bulk drilling and blasting, load and haul, crushing and screening, beneficiation of products, rehabilitation, rail loadout management, and logistics.
This section is devoted to the selection of the most proper drilling and blasting pattern for the Sangan Iron Ore mine. In the first step, the degree of importance (or weight) of …
Commodity: Iron ore Service: Drilling and Blasting, Load and Haul View our current major projects.
Tier 1 companies in Australia, North America, Africa and Asia are also experiencing similar benefits at coal, iron ore, copper, zinc, gold and diamond mines.
All the iron ore mines in Australia are open cut and the ore is usually extracted by conventional drilling and blasting methods. These methods generate a lot of fugitive dust which is both inhalable and respirable metalliferous dust. Although Australia produces direct shipping ores, their transport from pit to port generates a significant …
Rock on Ground provides specialist drilling, blasting, explosives supply and RC grade control drilling services for Australian mining projects.
ROCK BLASTING FOR MINING. Prof. A. Balasubramanian. Centre for Advanced Studies in Earth Science. University of Mysore. Mysore-6. Objectives: You are all aware that Mining is a major econom ic ...
Maintaining blasting schedules and reducing blasting costs can deliver downstream operational benefits to a project. Orica can support or manage all aspects of charging to agreed terms enabling improved outcomes using …
The excavation costs from the used patterns and the secondary blasting, including blasting costs (explosives, primer and detonator), drilling costs (depreciation, fuel, personnel, and maintenance) and bulldozer use, that are the main excavation costs in Chadormalu iron ore mine, were calculated.
Rock blasting objectives in mining are achieving desired fragmentation size for ore and required size for waste at minimum cost, controlling and minimizing ore dilution to increase the value of the extracted ore, and minimizing unwanted blasting results, including ground vibration and airblast.
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 …
This paper presents an economic analysis of a mine-to-crusher model to estimate and minimize the operating expenses of an open-pit iron mine located in northern Brazil. The activities at this truckless mine consist of drilling and blasting, loading and primary crushing.
Give your business an edge with our leading industry insights.
The worldwide mining industry consumes a vast amount of energy in reduction of fragment size from mining to mineral processing with an extremely low-energy efficiency, …
