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Browsing Fuel Research Institute of South Africa (FRI) Collection by Title

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The analysis of oils from the hydrogenation and supercritical gas extraction

Author: Kershaw, JR Date: 1976 The oils from dynamic and static hydrogenation, supercritical gas extraction and soxhlet extraction were separated into a number of fractions by absorption chromatography on silica-gel. The fractions from this chromatographic separation were ... Read more
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
The carbonization of coal and the production of coke, Char, Gas, and by-products in South Africa up to 1972

Author: Mullier, EFE Date: 1974 This report gives a reflection of the carbonization of coal and the production of metallurgical coke, gas coke, char, gas, and by-products in South Africa during the period 1915 to 1972. Data prior to 1954 is relatively incomplete, but from ... Read more
Catalytic coal hydrogenation zinc slimes

Author: Davidtz, JC ; Gray, D Date: 1977 The selection and utilization of South African raw materials as catalysts in coal conversion depend on the availability of catalysts. Equally important is the -selectivity and activity of these materials for coal conversion. Read more
Char production from bank coal for gas producer

Author: Myburhg, JJ Date: 1975 In August 1974, it was requested by the Combustion Department to produce a suitable char for use in their gas producer. It was decided to use Bank coal. The coal was washed at the Coal Preparation Pilot Plant on 19th Jul½ 1974 at a relative ... Read more
A criterion of classification of piston operated machines with prticular reference to Hydraulic piston pumps

Author: Bonapace, AC Date: 1975 This presentation fairly sums up the possibilities and the limitations of the present manufacturing technology of these as industrial products. 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
The dual fuel operation of a diesel engine, using ethyl alcohol as the secondary fuel

Author: Heim, FO ; Clark, D Date: 1977 In view of the desire to conserve oil products, it was decided to attempt to use ethyl alcohol in the place of petrol in a duel-fuel operated diesel engine. Apart from the change of fuel, test conditions have been as described in Report No. ... Read more
Evaluation of the reactivity of low temperature coke and char, containing volatile matter, towards carbon dioxide Part 1

Author: Von Woff, WTE Date: 1978 In the last few years there has been a growing interest in the reactivity of low temperature coke and char towards carbon dioxide. The equation of Hedden, derived for the calculation of the reactivity of metallurgical coke containing negligible ... Read more
Fluorescence spectroscopy in the characterisations of coal-derived liquids

Author: Kershaw, JR Date: 1977 The use of fluorescence spectroscopy as a qualitative analytical technique for the analysis of polyaromatic hydrocarbons in coal-derived liquids is reported. Read more
The hydropyrolysis (dry hydrogenation) of a selection of South Africa

Author: Barrass, G Date: 1978 A method utilising the "hot-rod" reactor has been employed to study the hydropyrolysis characteristics of a selection of South African coals. The effects of various operating parameters involved in this process have been investigated such as ... Read more
Hydrotreating of a coal-derived liquid. Part 1

Author: Barrass, G ; Davidtz, JC ; Gray, D ; Jezko, J ; Kershaw, JR ; Meinjes, AA Date: 1977 The +300 degrees Celsius boiling fraction of a coal-derived liquid produced by direct dry non-catalytic hydrogenation of Sigma coal was hydrotreated in the presence of a tailored Ni/W oxide on a synthetic layered silicate catalyst. Read more
Identification of zircon from a deister table concentrate

Author: Gaigher, JL Date: 1976 Zircon, ilmenite and rutile have been identified by X-ray diffraction in a pyrite concentrate prepared from a Witbank coal by means of the Deister Table. Read more
Interim report on mineral matter in coal - the reactivity of the mineral matter at room temperature

Author: Gaigher, JL Date: 1977 This report deals with the reactivity of mineral matter prepared from coal by the radio-frequency oxidation method, with the using X-ray diffraction to detect mineral phase changes, and possible react ion mechanisms. Read more
Interim report on minerals in coal - The direct determination of the mineral matter content in some coal product samples

Author: Gaigher, JL Date: 1976 The mineral matter factors for some coal product samples determined by the method of radio--frequency oxidation, compared with results from an earlier survey (Technical Memorandum No021 of 1971), appear to have an acceptable precision. Read more
An investigation into improvement of coal ignition in chain grate stoker fired boilers

Author: Clark, D ; Darazas, M Date: 1978 During the investigation, three methods of preheating the green coal in the guillotine door area of the stoker have been tried. One of these has proved successful. In addition, a series of preliminary laboratory tests have been carried out ... 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
Investigation of various properties affecting settling rates dense-medium suspensions using magnetite

Author: Wolff, WTE Date: 1975 The settling rate of dense-medium suspensions of three different magnetite ore samples was investigated. The result of the investigation indicates that the settling rate increases with (i) the increase in temperature of the suspension and 9 ... Read more
Low-temperature carbonisation assay of South African coals in a laboratory scale test apparatus: Part 1 The apparatus and experimental procedure

Author: Meinjes, AA Date: 1976 This report describes the apparatus used to determine the low-temperature carbonisation properties of South Africa. Read more
The Maceral composition of the products prepared by the Collieries in the Orange Free State and at New Springfield in the Transvaal

Author: Moodie, B Date: 1974 A survey of the Maceral composition of the products prepared by the collieries in the Republic was initiated a number of years ago. The first report (Report No. 10 of 1974) dealt with the Maceral composition of the products prepared by the ... Read more

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