Blasting Pattern is staggered/ rectangular 8 Depth of Blast hole = 13 14m 9 length of face = 40 100m 10 explosives Site Mixed Slurry VOD = 4500m/s Relative Weight Strength = 97 11 Avg Charge/hole = 200 220kg 12 Charge Length = 4 5m 13 Specific Charge = 0 55 0 65 kg/m3 of blasted rock 14
Get PriceInspite 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 aggregate cost of drilling and blasting is taken together this may go as high as 30% of direct cost of production
Get PriceThe 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
Get PriceThe Purpose and utility boreholes in mines Safe Handling and use of Explosives; Simultaneous short firing; Blasting in Fire areas in Opencast Mines; Safety Precautions Suppression and treatment of mines Dust and Other C Elements of Mining Machinery Safety Aspects and safe use of different kinds of Machinery used in Opencast Mines
Get PricePhoto about Mining industry Big explosion blast on ground for extracting granite rock or metal iron ore at opencast quarry mine Image of destruction blast gold 84681125 Abstract cosmic colorful fire work explosion blast on dark background closeup view textured pattern abstract closeup view of a fire work explosion blast on dark
Get PriceThe pattern of shot holes drilled for solid blasting in coal in galleries of bord and pillar working is 1 Wedge cut or 2 Fan cut Drivage of a narrow gallery in coal without an undercut can be compared with drivage of a drift in stone Blasting out coal in the centre of the face in the wedge cut pattern gives free face for the remaining
Get PriceDrilling the blast pattern in an opencast goldmine in Nevada mining blast hole drilling rig blast hole drill stock pictures royalty free photos & images Blast hole drill operates in the pit at Rio Tinto Group s West Angelas iron ore mine in Pilbara Australia on Sunday Feb 19 2024 Rio Tinto of 2 NEXT United States
Get PriceMost of the high explosives permitted explosives and slurry explosives used in the mines have a velocity of detonation ranging between 2500 and 5000 metres per second For high explosives which are used as boosters the V O D is high e g O C G 6000 m/s; Primer 7000 m/s
Get PriceA Study on Application of Strategic Planning Models and Operations Research Techniques in Opencast Mining By KSHIROD BRAHMA IRJET A Critical Review of Indian Underground Thick Coal Seam Mining Technologies and Future Prospects By IRJET Journal COURSE BOOK B Tech Mining Engg for Admission Batch of 2024 onwards Department of Mining
Get Pricelist of equipments required for manganese ores mining No 416 Jianye Road South Jinqiao Area Pudong Shanghai China 0086 21 58386256 support pejaw com
Get PriceHoles are drilled in a staggered pattern 5 feet by 5 feet burrowing to the next benchmark some 25 feet down then capped with a plastic cover until ready to place the explosives Drill rigs in opencast gold mine preparing for blasting by drilling blast holes Ghana Mining operations for transporting & managing iron ore Pit with
Get PriceGuinea has the largest bauxite reserve in the world at more than 40 billion tons of bauxite reserve The bauxite mining and export from Guinea is fast picking up with present export of about 28 MTPA and a plan to reach 66 MTPA by 2024 Bauxite occurs in the low lying plateaus of 100 m to 300 m above mean sea level and formed by the laterisation
Get PriceThe Kolomela Mine is situated near Postmasburg Town in the Northern Cape Territory in South Africa Mining operation at Kolomela started in late 2024 A stacker reclaimer is used at Kolomela to blend different grades of processed ore before shipment Kolomela produced 13 2Mt of direct shipping iron ore in 2024
Get PriceDesigning analysing and visualising in 3D has never been easier ring to ring and hole to hole interactions and overall blast dynamics are at your fingertips allowing users to optimise and maximise output benefit and results Underground production blasting typically requires geometrically complex ring patterns
Get PriceOpencast mining is also known as open put mining open cut mining surface mining and also as strip mining the later term being commonly used in the U S A for opencast mining of coal like draglines power shovels rear dumping trucks common type being Haulpaks well hole drills etc are used The blast holes are 6 m to 18 m deep and
Get PriceIn an open cast mining operation the production cycle comprises drilling blasting loading hauling and coal preparation subsystems Significant cost savings can be achieved by minimizing the cost of these activities Kozan and Liu 2024 However optimizing a single subsystem does not mean that the whole system is optimized
Get Pricethe mine greater is the quantum of waste generated Opencast mines are therefore more pollution intensive as they generate much higher quantities of waste compared to the underground mines Open pit mines produce 8 to 10 times as much waste as underground mines [1] II LAND DEGRADATION The ratio of overburden excavated to the amount of
Get PriceBLAST DESIGN Figure 8 2 Staggered pattern Figure 8 3 Sing Figure 8 1 Square or rectangular pattern 114 DELAY PATTERNS 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
Get PriceIron Copper Lead and Zinc Manganese Aluminum Chromium Occurrence and distribution of mines Blast design Primary and secondary blasting Rock fragmentation studies Dangers associated with blasting in opencast mines and preventive measures Environmental impacts ; Faculty of Engineering &Technology KU ; 2024 202 ;
Get PriceIt is especially predominant in obtaining items such as coal copper sand gravel crushed stone iron aluminum and phosphates There are five basic types of surface mining including open pit mining strip mining dredging mountaintop removal and high wall mining
Get PriceAug 10 2024 That is to fill blast holes on a mine site into which the liquid mixture of ammonium nitrate and fuel oil explosive charges have already been inserted to produce stemming unit that increases blasting efficiencies across the open cast mining sector in Sothern Africa which in turn can increase production get price
Get PriceTechno economic assessment of drilling and blasting parameters in opencast mines Mass production blasting in underground metal mines for improved production with safety to underground openings and nearby surface features Induced caving by blasting for effective strata management in underground coal mines Designing of solid blasting patterns
Get PriceOpencast Mining Opencast mining destroys landscapes forest and wildlife habitat at the mining site when trees plants and topsoil are cleared from the mining area A pattern of blast holes has been drilled into the overburden on the right of the image The coal is removed by a power shovel and placed into trucks for haulage from the
Get PriceThe Purpose and utility boreholes in mines Safe Handling and use of Explosives; Simultaneous short firing; Blasting in Fire areas in Opencast Mines; Safety Precautions Suppression and treatment of mines Dust and Other C Elements of Mining Machinery Safety Aspects and safe use of different kinds of Machinery used in Opencast Mines
Get PriceGround vibration induced by blasting practices in mines has become a serious environmental issue in today s scenario Various factors influence the blast vibration being produced from the blasting practices such as the pattern of blasting drilling pattern quality and quantity of explosives being used delay pattern etc
Get PriceDate 14/09/2024 It gives me immense pride to join as the Chief Inspector of Mines & Head of the Directorate General of Mines Safety an organization with a legacy of untiringly serving the nation for more than 119 years with mandate to regulate enforcement of the Mines Act 1952 and the legislations framed there under
Get PriceIn order to control production blasting and optimize mining operation it is important to study the step topography vibration amplification and attenuation effect in the open pit mine The vibration monitoring test was carried out at the Sijiaying Iron Mine which belongs to Hebei Iron and Steel Group Mining Co Ltd and locates to the east
Get Priceza/article/2024 02 07 arcelormittal reports years headline loss/ 1927 1937 development of the pig iron processing sector 3 million tons of steel Arcelormittal USA Ispat Inland at 3210 WATLING ST MC2 980 #7 BLAST FURNACE MANITENANCE SHOP EAST CHICAGO IN 46312 During the 1970s three of the six blast furnaces were refurbished and their capacities increased During
Get PriceOpen pit mining also known as open cast or open cut mining and in larger contexts mega mining is a surface mining technique of extracting rock or minerals from the earth from an open air pit sometimes known as a borrow This form of mining differs from extractive methods that require tunnelling into the earth such as long wall mining Open pit mines are used when deposits of commercially
Get PriceThe mine develop in order to produce iron ore by adopting opencast method of mining alongwith deployment of HEMM for different purposes Machines deployed are Drill Machine IBH 10 3 5 CuM 2 8 CuM and 2 4 capacity shovels 35 tonne and 31 tonner dumper motor grader 24 blade Loader Excavator Dumper and Dozer etc Mine development and
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