Browsing by Advisor/Supervisor
Now showing items 1-16 of 16
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Adsorbent assisted drying of spiral and flotation coal fines
(North-West University (South Africa)., 2021)Collieries inevitably have ever-increasing wet coal fines, which cannot be sold since it is difficult to handle, has a consequently lower heating value and relates to higher transportation costs. Recently, due to the energy ... -
Application of a magnetic cyclone on a magnetite dense medium separation process
(North-West University (South Africa), 2020)The face of coal supply and demand is ever-changing, with the demand for clean coal rising and with a dwindling supply of high quality ore. Methods to efficiently clean the coal of worsening run-of-mine quality are ... -
The characterisation of the corrosion and degradation of atomised ferrosilicon in a dense medium circuit
(North-West University, 2003)The Kumba Resources Sishen Iron Ore Mine is one of the biggest iron ore producers in South Afica, where beneficiation of the iron ore is done using a dense medium separation process. Ferrosilicon is used as the dense medium ... -
Dry beneficiation of fine coal using a fluidized dense medium bed
(2013)Beneficiation of fine coal (+500 μm –2000 μm) is a worldwide problem in the mining industry, especially dry beneficiation of fine coal. Coal beneficiation can be divided primarily into two methods, namely wet- and dry ... -
Drying of fine coal using warm air in a dense medium fluidised bed
(2014)Fluidised bed drying is currently receiving much attention as a dewatering option after the beneficiation of fine coal (defined in this study as between 1mm and 2mm particles). The aim of this study was to investigate the ... -
Experimental investigation into the application of a magnetic dense medium cyclone in a production environment
(Potchefstroom University for Christian Higher Education, 2001)The magnetic dense medium cyclone project was undertaken at Koingnaas Mine on a 250 mm diameter cyclone during 1998 and a 510 mm cyclone during 2000. The aim of the project was to evaluate the performance of a magnetic ... -
An investigation into an improved method of dewatering fine coal
(Potchefstroom University for Christian Higher Education, 2003)Dewatering coal, and especially fine coal (-600μm), is a significant problem in the preparation of coal. The final moisture level of fine coal can be anything up to 30% by weight, depending on the type of dewatering equipment ... -
Investigation of coal agglomeration in a non-pressurized gasifier
(North-West University, 2008)The gasification process is vital to various applications, such as the manufacture of products in the petrochemical industry, for example chemicals, diesel and petrol. The importance of gasification to the coal industry ... -
Ionizing radiation as imaging tool for coal characterization and gasification research
(North-West University, 2012)In this study, imaging with ionizing radiation was evaluated as a research technique in coal research. Part of the evaluation was to conduct a thorough literature survey as well as a preliminary investigation into coal ... -
An optimisation approach to investigate quality control of a product coal stockpile
(North-West University, 2012)For any coal beneficiation group to reach the full financial potential in coal production, optimal coal cleaning processes are of great importance. The heterogenic nature of coal is the main constraint in producing a ... -
The preparation of activated carbon from South African coal for use in PGM extraction
(North-West University, 2007)Activated carbons used in the Platinum Group Metals extraction industry are characterised by large internal surface areas and a great affinity for platinum, palladium and ruthenium. It is therefore necessary in this study ... -
Process sensitivity of the hybrid sulphur thermochemical cycle
(North-West University, 2010)A simple flowsheet of the hybrid sulphur cycle was devised and a steady state simulation thereof was built in Aspen. A sensitivity analysis was done and the snowball effect was identified as a significant process control ... -
Simulation and control of a small scale sodium sulphate salt splitting plant
(North-West University (South Africa)., 2022)Base metal refineries produce sodium sulphate solutions as a waste product in the precipitation step. The solution that is formed generally has a concentration of around 100 g Na2SO4/L. Discharging solutions with such high ... -
A study of the influence of thermal drying on physical coal properties
(North-West University, 2009)One of the major issues facing the coal industry today is the decline in economically recoverable reserves, especially in the Witbank 1 Mpumalanga region of South Africa. This necessitates a critical review of alternate ... -
Water transport mechanisms in coal stockpiles
(North-West University (South Africa) , Potchefstroom Campus, 2015)One of the key indicators of coal product quality is the moisture content. Excess moisture can have a negative effect as it results in handling problems and a reduction in coal value by decreasing the heating value. The ... -
Winnowing as a dry separation method for fine coal
(North-West University (South Africa), 2020)Dry coal processing is fast becoming favoured as a fine coal beneficiation technique. The decline in suitable good-quality coal, as well as the ongoing decrease in usable process water, makes dry beneficiation of the fine ...