Search Documents
Search Again
Search Again
Refine Search
Refine Search
-
Composite Failure Mechanisms In Coal Measures Rock Masses - Myths And Reality - 1. Introduction
By John V. Simmons, Peter J. Simpson
Excavated slopes in open pit coal mines are designed to be as steep as possible consistent with stability and safety requirements. Slope failures occur for many reasons, including oversteepening. Th
Jan 1, 2006
-
Study of the Dissolution of Chalcopyrite in Solutions of Different Ammonium Salts
By Jochen Petersen, Thandazile Moyo
"The oxidative leaching of chalcopyrite in ammoniacal solutions has been evaluated using electro-analytical techniques. The anodic dissolution process has been established to be a seven-electron trans
Jan 1, 2015
-
Development Of A Risk-Based Mine Closure Cost Calculation Model
By A. du Plessis
The study summarized in this paper focused on expanding existing South African mine closure cost calculation models to provide a new model that incorporates risks, which could have an effect on the cl
Jan 1, 2006
-
The effect of feed-coal particle size on the separating characteristics of a gas-solid fluidized bed - Synopsis
By Y. M. Zhao
The separating performance of a pilot dry beneficiation system using a gas-solid fluidized bed was investigated with coal from South Africa. The coal used for the study has a low inherent moisture con
Jan 1, 2010
-
Annual Report - For The Year Ended 30th June 2006
Council for 2005/2006 President W.H. van Niekerk President-elect R.P.H. Willis Vice-presidents Senior R.G.B. Pickering Junior A.M. Garbers-Craig Immediate Past-president F.M.G.
Jan 1, 2006
-
Chromium distribution between slag and non-carbon saturated metal phases under changing partial pressure of carbon monoxide
By X. Pan
Slag-metal equilibrium experiments were conducted at 1500ºC and 1580ºC under 0.03 atm, 0.05atm and 0.83 atm CO partial pressures using silica and Cr-oxide crucibles. The complex slags belonged to SiO2
Jan 1, 2004
-
Mould Fluxes In Continuous Casting Of Steel - Characterization And Performance Tuning
By M. Görnerup, M. Hayashi, S. Seetharaman, C. -Å Däcker
The mould flux plays a crucial role in the continuous casting operation of steel due to its multi-functional assignment as lubricator and heat flux controller. In reality, the commercial fluxes can fa
Jan 1, 2004
-
The Application Of The Q-Tunnelling Quality Index To Rock Mass Assessment At Impala Platinum Mine
Publications on hard rock tunnel support design in the South African mining industry have originated primarily from the goldmines during the past 50 years. Little has been published to date on the pla
Jan 1, 2002
-
The Benefit To Open Pit Rock Slope Design Of Geotechnical Databases
By M. J. Little
Potgietersrust Platinums Ltd is Anglo Platinum?s only open pit operation and annually extracts 57 million tonnes of rock from 2 open pits. Over the past 3 years ~220 km of exploration drilling has bee
Jan 1, 2006
-
Modelling of fluid flow phenomena in Peirce-Smith copper converters and analysis of combined blowing concept (04487fac-e28a-4af4-ae69-1eae63554822)
By D. K. Chibwe, P. Taskinen
"This investigation consists of a numerical and physical modelling exercise on flow patterns, mixing, solid-liquid mass transfer, and slag-matte phase distribution in a 0.2-scale cold model of an indu
Jan 1, 2015
-
Observations Of Behaviour Of Oxide Inclusions At Molten Slag/Steel Interfaces
By Y. Wang, S. Sridhar, B. Coletti, G. N. Shannon, S. Vantilt
The final removal of inclusions in the ladle, tundish, and mold in a continuous casting process involves the kinetic steps of liquid film drainage, interface rupture, and absorption of the inclusion i
Jan 1, 2004
-
The Role Of Metal And Slag Films Stabilization Phenomena With Respect To Clean Steel
By I. A. Minaev
The conditions of a stability of metallurgical films on a surface of solid on the basis of classical regularities of a thermodynamics are considered. For specific conditions of metallurgical processes
Jan 1, 2004
-
Annual Report - For The Year Ended 30th June 2004
Council for 2003/2004 President T.R. Stacey President-elect F. M. G. Egerton Vice-presidents Senior W. H. van Niekerk Junior R.P.H. Willis Immediate Past-president S.J. Ramokgo
Jan 1, 2004
-
Physical Modelling Of Slag-Metal Dispersion (37ad1f35-f1c2-4487-a9f7-50a53447b856)
A physical modelling study has been carried out to simulate the slag-metal dispersion induced by a high-strength bottom gas injection. Water and kerosene were utilized to simulate metal and slag respe
Jan 1, 2004
-
National and international codes for reporting mineral resources and reserves: Their relevance, future and comparison
By F. A. Camisani-Calzolari
The latter half of the 20th century has seen the proliferation of a series of codes to address commodity needs which were brought about by rapidly advancing technologies and the globalization of marke
Jan 1, 2003
-
Mine Operational Planning As The Driver For Determining And Managing Energy Demand
By Dave Capstick, Ken Garner, Jim Porter
Technologies and systems used in the management of energy consumption in the mining and metal processing industry are well understood and documented from the supply side of the business. It is our con
Jan 1, 2005
-
Development Of A Vibration-Absorbing Handle For Rock Drills
By J. P. D. Strydom
The transmission of excessive vibration to the human body can cause physical stress that may result in crippling pain or permanent disability. Rock drills are known to transmit high levels of vibratio
Jan 1, 2002
-
Liquidus temperature and viscosity of melter slags
By M. Somerville, S. Sun
The liquidus temperature and viscosity of a range of melter slags produced in South Africa were determined. Drop-quench experiments were carried out on the supplied plant samples to determine the liqu
Jan 1, 2004
-
Nugget effect, artificial or natural? - Synopsis
By P. C. Carrasco
Knowing the origin of the relevant and irrelevant components of the nugget effect is essential to optimize the process under study. This paper describes the causes of the nugget effect and, its depend
Jan 1, 2010
-
Integration of seismic observations from deep level gold mines with dynamic numerical modelling
By M. W. Hildyard, M. O. Kataka
Seismic integration schemes aim to incorporate the rock mass response provided by the historical seismic activity to improve the ability of numerical models to reproduce future response to mining. Up
Jan 1, 2003