Author:Barrass, GDate:1978A 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
Author:Barrass, G; Davidtz, JC; Gray, D; Jezko, J; Kershaw, JR; Meinjes, AADate:1977The +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
Author:Gaigher, JLDate:1976Zircon, 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
Author:Gaigher, JLDate:1977This 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
Author:Gaigher, JLDate:1976The 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
Author:Clark, D; Darazas, MDate:1978During 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
Author:Erasmus, TCDate:1972The present study is confined to investigation of the ignition phase of the combustion process and deductions must be seen in that light.Read more
Author:Wolff, WTEDate:1975The 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
Author:Meinjes, AADate:1976This report describes the apparatus used to determine the low-temperature carbonisation properties of South Africa.Read more
Author:Moodie, BDate:1974A 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
Author:Von Wolff, WTE; Kessler, IIMDate:1966This report discusses the measurement of the magnetic properties of magnetic according to the Twin Isthmus method.Read more
Author:Gaigher, JLDate:1977The regional variation of mineral matter to ash ratios for some coal product samples is discussed by means of frequency weighted histograms.Read more
Author:Joubert, FEDate:1976A 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
Author:Petrick, AJDate:1971This report discusses the importance of fuel research institute as an industrial research institution, and emphasis on how problems of direct interest to the industries served by the Institute fall directly to their responsibility to undertake ...Read more
Author:Bonapace, ACDate:1973This paper discusses the potential function, critical conditions governing the phenomena of particle deposition, saltation, and the formation of dunes.Read more
Author:Erasmus, TCDate:1975This report is intended to be read at the fifth international coal preparation congress in sydney, Australia, in May, 1976.Read more
Author:Erasmus, TCDate:1972A 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
Author:Darazs, M; Clark, DDate:1976A literature survey has been carried out. Investigation into the growth of phosphatic deposits, using the Institute's experimental boiler plant, are reported.Read more
Author:Viljoen, GA; Kuhn, AH; Erasmus, TCDate:1974A 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
Author:Bonapace, AC; du Toit, PDate:1975Some physical expressions relating the parameters of the magnetic field have been derived. A description of the magnetic field was carried out by measuring the magnetic flux intensity at various points along the drum circumference and at ...Read more