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Now showing items 21-40 of 1225

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
The mobile gas analysis laboratory of the Institute

Author: Joubert, FE Date: 1976 A mobile gas analysis laboratory has been acquired by the Fuel Research Institute. The purpose of this facility is to provide to the Inspectors of mines and to colliery managements an on-site gas analysis service during fire control operations. Read more
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
The correlation between certain parameters used to characteristics wrinkling properties

Author: Kelly, IW Date: May 1976 Good correlation was found between the AATCC Wrinkle Recovery Rating and the mean wrinkle for a series of cotton/polyester blend fabrics. 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
The combing performance of different types of comb cylinders for rectilinear combs

Author: Aldrich, De V Date: Feb 1971 The combing performance of three types of comb cylinders were investigated, and compared on the basis of top cleanliness, mean fibre length of the top and fibre breakage. 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
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
A report on investigations into the single - fuel, dual fuel and triple - fuel operation of a diesel engine

Author: Heim, FO ; Clark, D Date: 1978 This report discusses about an investigation which was aimed at improvement in fuel efficiency as a means of reducing smoke emission. 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
Mineral matter factors for fifty size coal product samples

Author: Gaigher, JL Date: 1977 The regional variation of mineral matter to ash ratios for some coal product samples is discussed by means of frequency weighted histograms. Read more
Stream transport of particles in full suspension. The energy dissipation function as an invariant of the concentration

Author: Bonapace, AC Date: 1977 In this paper some hydraulic phenomena are discussed which are relevant to the hydraulic transport of particles in a fully suspended state. 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
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
The continuous shrinkresistant treatment of wool tops using chlorine gas in a conventional suction drum backwash

Author: Van Rensburg, NJJ ; Barkenhuysen, FA Date: Sep 1983 Wool tops were shrinkresistant successfully on a conventional suction drum back wash using chlorine gas dissolved in water. Read more
The contamination of wool by high density polyethylene (HDPE) woolpack material

Author: Strydom, MA Date: Jun 1985 Pilot scale processing trials were carried out with wool which had been packed in a new low fibrillating, high density polyethylne. Read more
The cleanliness of rectilinear combed tops. Part III: The influence of a double top comb and a burr beater

Author: Aldrich, De V ; Kruger, PJ Date: Dec 1972 The combing performance of a double top comb was compared with that of a single top comb. Read more
The cleanliness of rectilinear combed tops. Part 2: The influence of the top comb and comb cylinder

Author: Aldrich, De V ; Kruger, PJ Date: Dec 1972 The influence of the gap between pins, percentage void, pin and pin thickness on the combing performance of comb was investigated. Read more
The cleanliness of rectilinear combed tops. Part 1: The influence of gauge setting and gill feed

Author: Aldrich, De V ; Kruger, PJ Date: Nov 1972 The influence of gauge setting and gill-feed on the efficiency with which the rectilinear comb removes impurities was investigated. Read more
The characteristics of double pique wool fabrics knitted at different ratios of yarn intake. Part II Some additional physical properties

Author: Schulze, JE Date: Sep 1968 This paper which is a continuation of technical report no .95, reports on some additional physical properties of Swiss and French double pique fabrics knitted with the same yarn at three different ratios of yarn. Read more

Now showing items 21-40 of 1225

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