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Browsing Archives collection by Author "Erasmus, TC"

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Beneficiation of fine coal in the republic of South Africa

Author: Fourie, PJF ; Erasmus, TC Date: 1977 The beneficiation of minus 0,5 mm coal in the Republic of South Africa is reviewed in terms of the availability of fines, the formidability of its cleaning, froth flotation, autogenous cyclones, tables, and dense medium cyclones. Read more
A brief description of the cerchar combustor and the subsequent improvements on the combustor

Author: Erasmus, TC Date: 1967 A study of the ignition of pulverized coal in a furnace was undertaken at the FRI of SA, along the lines set out by the French Fuel Research Centre. This report briefly describes the technique and the original apparatus. Read more
A computer programme for evaluating the dust burden of dust-laden gases flowing in large ducts

Author: Erasmus, TC Date: 1973 Since the conditions in the duct can vary, the data are recorded at the beginning, middle and end the sampling period for each sampling point. Read more
A description of the delayed coking apparatus

Author: Erasmus, TC Date: 1973 This report discusses an investigation conducted by the Fuel Research Institute to construct a small-scale version of the delayed-coking apparatus, and study the fundamentals involved and the essential features that characterize the delayed-coking ... Read more
Estimation of residence time distribution within the Drewboy washer

Author: Erasmus, TC ; Du Plessis, HSL Date: 1963 The objective of the report was to ascertain the order of the residence time distribution within the Drewboy washer. Read more
Experiments conducted to determine the reproduceability of washing tests and the significance of probable error determinations

Author: Erasmus, TC Date: 1962 The raw coal brought to the plant was reduced to minus three inches. The minus coal was passed over screens to eliminate minus 1/4 inch fines and -3 inch +1/4 inch coal was stored in service bunkers in the pilot plant building. Read more
Experiments conducted to determine the reproductibility of float and sink analysis and the effect of coal pretreatment on float and sink analysis

Author: Erasmus, TC ; Du Plessis, HSL Date: 1963 The raw coal brought to the pilot plant was reduced to minus three inches. The minus three inch coal was passed over screens to eliminate minus 1/4 inch fines. Read more
Flame propagation in pulverized coal-air mixture

Author: Erasmus, TC Date: 1965 Flame propagation in pulverized coal-air-mixtures may be studies by placing an ignition source in a pulverized-coal-air-stream. The fuel-air-mixture is ignites at the source and the flame propagates laterally into the stream to form a conical flame. Read more
Gaseous fuels for internal combustion engines

Author: Erasmus, TC Date: 1974 During 1972 the registered vehicles in the Republic totaled 2,39 million. All these vehicles, with the exception of the motor cycles, could be run on gas. To obtain some idea of the gas quantities involved, the gas consumption, expressed as ... Read more
The influence of near- gravity material on the performance of the Drewboy washer

Author: Erasmus, TC Date: 1964 These experiments were designed to assess the influence of near gravity material on the performance of the Drewboy washer. Read more
An investigation into the ignition properties of the South African Pulverized coals

Author: Erasmus, TC Date: 1972 The present study is confined to investigation of the ignition phase of the combustion process and deductions must be seen in that light. Read more
Predicting the performance of a coal washer with aid of a mathematical model

Author: Erasmus, TC Date: 1975 This report is intended to be read at the fifth international coal preparation congress in sydney, Australia, in May, 1976. Read more
The prediction of Tromp distribution curves for cyclone washers

Author: Erasmus, TC Date: 1972 A mathematical model has been developed by means of which it is possible to predict the Tromp distribution curve at any mean separation specific gravity within the range 1,3 to 1,5. These curves serve as a reference against which the efficiency ... Read more
The reactivity index of sample of coal submitted by the Somerset Mining Company

Author: Viljoen, GA ; Kuhn, AH ; Erasmus, TC Date: 1974 A sample of coal submitted by the Somerset Mining Company was treated in the Institute's coal preparation pilot plant as Pretoria West. The major portion of the relative density float product prepared in the Drewboy washer, was subsequently ... Read more
Report on dust collector tests at Highveld Power Station boiler no. 6 October 24th 1962

Author: Erasmus, TC Date: 1963 The tests reported herein were carried out on behalf of Messrs. Davidson & Co (Africa) Ltd., the suppliers of the Dust collector plant, for the purpose of determining the efficiency of the installation. Read more
Report on dust collector tests at Komati Power Station 21st December 1965

Author: Erasmus, TC Date: 1966 The tests reported herein were carried out on behalf of Messrs. Mitchell Engineering (Pty) Ltd., the suppliers of the Boiler Plant, to determine the quantity of fly-ash leaving the boiler. A preliminary test was carried out on the 20th December, ... Read more
Report on dust collector tests at Umgeni Power Station boiler no. 9 November 26th 1963

Author: Erasmus, TC ; Van Heerden, RB Date: 1964 The tests reported herein wee carried out on behalf of Messrs. Davidson & Co. (Africa) Ltd,. the suppliers of the Dust Collector Plant, for the purpose of determining the efficiency of the installation. Read more
The spontaneous combustion liability index of Anglo power kriel coal

Author: Erasmus, TC Date: 1976 The so-called reactivity index, a diminution of spontaneous combustion liability index, gives an indication of a coal's liability towards spontaneous combustion. Read more
Spontaneous heating of Landau coal

Author: Erasmus, TC Date: 1973 A sample of Landau low-ash coal was submitted by the T.C.O.A and was tested in the Institute's experimental bunkers to assess the liability of this coal towards spontaneous combustion. Read more
Spontaneous heating of Umgala coal

Author: Erasmus, TC Date: 1977 Earlier studies have indicated that Umgala coal is prone to spontaneous heating and that ignition is likely to occur unless special precautions are taken during stockpiling. Read more

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