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Observations on the Impact of Furnace Dimensions and Power Density on Taphole Integrity
By R. J. Hundermark, K. van der Merwe, L. R. Nelson
Taphole integrity is critical to all furnaces, but it is especially important in high intensity electric furnaces processing matte and metal of high superheat. Key furnace dimensions are the electrod
Jan 1, 2015
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Multiphysics Couplings and Stability of Fault Zones
By I. Stefanou, J. Sulem
"In the last thirty years, the study of earthquake mechanisms has emphasized the major role of rock friction. Earthquakes appear to be the result of a frictional instability and occur by sudden slippa
Jan 1, 2015
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Improvement of the Cobalt Process at the Chemicals of Africa (Chemaf) Usoke Plant – Effect of Seed Recycle
By Jo Katembo, Patty Bwando, Patient K. Ilunga, Yves Kalubi, Emman Mulaj
"From 2010, the dolomite concentration in the ore fed to the Usoke Plant increased, resulting in a significant increase in the gangue acid consumption and Mg build-up in the circuit, and thus an incre
Jan 1, 2015
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The Significance of Modeling the Excavation Sequence in Numerical Analysis of Underground Openings
By X. T. Feng, Y. H. Hatzor, Y. Tal, G. Yagoda-Biran
"When studying jointed rock mass deformation around underground openings it is of great importance to model correctly the excavation sequence during the numerical simulation. This is because for effec
Jan 1, 2015
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A Simple Numerical Approach for Modelling Time Dependent Swelling Mechanisms in Shales
By José L. Carvalho
"Time-dependent swelling deformation of several shaley rock formations in Ontario is a wellknown phenomenon. In shales and mudstones with a higher salt concentration in the pore fluid than the ambient
Jan 1, 2015
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Splitting of Mudrocks/Shales by Gypsum Growth
By A. Brian Hawkins
"When pyrite oxidizes in dark grey/black, calcareous, mudrocks or in argillaceous limestones, ferrous sulfate is formed and sulfuric acid is released. The sulfuric acid combines with the calcite prese
Jan 1, 2015
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Artificial Geo-Hydrological Zonation
By J. A. López-Molina, S. García, V. Castellanos-Pedroza
"Groundwater inflow into underground constructions may cause hazardous working conditions and environmental problems. It is essential to localize and characterize potential flow paths and to estimate
Jan 1, 2015
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Lepidolite Flotation from Low Grade Ores Using a Cationic Surfactant (82d1724f-f630-43e2-8d8a-1285e17f2772)
By S. B. Kim, J. Hong, K. Park, W. Kim, H. Kim, Y. Han, J. Choi
"For the first time, the influence of stearyl trimethyl ammonium chloride (STAC) as a collector, on the flotation behavior of lepidolite (Uljin, South Korea) was systematically examined in Denver Sub-
Jan 1, 2015
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A Geometallurgical Approach of the Copper-Nickel-Platinum Group Elements Maturi Deposit, Minnesota, USA, Using Quantitative Mineralogy
By Charles Knilans, Tassos Grammatikopoulos, Nicole Hoffmann
"Twin Metals Minnesota LLC, (TMM) has recently completed a prefeasibility study evaluating the development and operation of an underground copper (Cu), nickel (Ni), platinum (Pt), palladium (Pd), and
Jan 1, 2015
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Modelling Heavy-Tailed Coarse Gold Deposits with a Spatial Point Process
By J. B. Boisvert, W. Board, C. R. Mooney
"Traditional geostatistical modelling methods are difficult to apply to heavy-tailed deposits because the extreme positive skew of the grade distribution leads to bias. The focus here is on an innovat
Jan 1, 2015
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A Variable Parameter-Based Creep Damage Model for Rock Salt Considering the Effect of Loading Frequency
By Ning Zhang, Yan Chen, Qikang Yi, Linjian Ma, Guoan Wang
Laboratory tests were performed to explore the effects of frequency on the deformation property of rock salt subjected to cyclic loading under confining stress condition. A two-stage (transient and st
Jan 1, 2015
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Study on the Fabrication and Joining Technologies of Advanced Oxide Dispersion Strengthened Steel
By B. K. Choi, S. H. Kang, G. E. Kim, K. B. Kim, S. Noh, T. K. Kim, H. J. Jin
Oxide dispersion strengthened (ODS) steel is being considered as an in-core structural material of future nuclear reactor systems because of its excellent creep and irradiation resistance on the basis
Jan 1, 2015
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Mechanism Analysis and Control Technology for Strong Strata Behaviors in Shallow Depth Seams While Mining out of the Concentrated Coal Pillar in Upper Room and Pillar Goaf
By Yin Wang, Lin Li, Zhongwei Bi, Like Wei, Wen Li, Shaogang Li, Bin Zhang, Hongjie Li
Presently,Many long-wall fully-mechanized faces in shallow depth coal seams are below room and pillar goaf in Shendong mining area. When the working face is advanced out of concentrated coal pillar in
Jan 1, 2015
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Modern Air Pollution Control in Iron Ore Pelletizing
In the last five years, new iron ore pellet plants have been built with significantly reduced air pollution levels compared to the older generation of plants. European and American pollution controls
Jan 1, 2015
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Massive Blasting in Chuquicamata Mine
By Sergio Segovia Parra, Victor Hernan Sheen Uriol
This contribution of the concept of mass blasting both closing and production allows breaking paradigms, to limit the number of tons to thunder. The areas of geotechnical different mining large mining
Jan 1, 2015
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Characteristic Features of Deep Excavations in the Metropolis and the Probable Hazards.
By Sudhir Kumar Das
"The exorbitant price of the land in the metropolis has restricted the horizontal expansion and compelled the owners, the developers and the engineers to opt for vertical expansion. This has resulted
Jan 1, 2015
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Spatial Modelling of Geological Domains with Multiple Training Images: Application to the Red Dog mine, Alaska, United States
By K. J. Palmer, D. A. Silva
"Evaluating resources and reserves requires the reliable modelling of geological domains and their grades. “Multiple point statistics” simulation is a relatively new geostatistical method to generate
Jan 1, 2015
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Incorporating Rock Reinforcement Elements into Numerical Analyses Based on the Hybrid Finite-Discrete Element Method (FDEM)
By O. K. Mahabadi, A. Lisjak, B. S. A. Tatone, N. Vlachopoulos
"Numerical simulations are widely adopted in the design of several types of rock structures, including tunnels, caverns, rock cuts, and open pit and underground mines. In recent years, analyses based
Jan 1, 2015
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Seismic Remediation of Perris Dam
By Michael W. Driller, Wen Yan (Grace) Chen, Steven J. Friesen
"Remediation for Perris Dam has been proposed in response to deficiencies identified in a seismic stability study prepared by the California Department of Water Resources (DWR) in 2005. Lenses of pote
Jan 1, 2015
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Full Scale Lab Testing for the Determination of Rock Bolt Contribution to Reinforced Joint Shear Strength
By F. L. Pellet, S. Maiolino
"The determination of rock bolt contribution to reinforced joint shear strength is still a challenge, especially for assessing reinforced rock mass stability. For this purpose, several experimental st
Jan 1, 2015