Author:Erasmus, TCDate:1963The 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
Author:Erasmus, TC; Du Plessis, HSLDate:1963The object of this test was to ascertain whether there exists variation in the specific gravity with special position within the bath of the Drewboy dense medium washer.Read more
Author:Van Doornum, GAWDate:1967In the experiments covered in this report, a fury No. 3 hot water boiler was operated on Witbank bituminous coal (Waterpan), on anthracite (Natal Ammonium) and mixtures of these two fuels.Read more
Author:Van Eck, BDate:1960The FRI was approached by Messrs. Nortons Tividale SA (Pty) Limited, with the request to carry out certain tests on a dense medium washer supplied by them to the Carnarvon Anthracite Colliery.Read more
Author:Kuhn, AHDate:1973This report contains all the required information, but is kept as condensed as possible to facilitate the making of similar tests on Van Dyks slurry.Read more
Author:Streicher, SFDate:1966A sample of n'Kandabwe coal was submitted by the Chief Geologist, Chartered Exploration Limited, Lusaka Zambia, Fraser & Chalmers (S.A) Pty Ltd, for washability determinations.Read more
Author:La Grange, CCDate:1965The purpose of this investigation was in the firs instance to determine what yields of low ash products could be expected from the duffs, such products to be suitable.Read more
Author:Meintjies, AA; Van Der Berg, FDate:1968The object of this investigation was to determine whether a correlation could be found between the known explosive properties of coal dusts and the nature, quantity and temperature dependence of volatile matter formation.Read more
Author:Savage, WHDDate:1965During the past eighteen months discussions have been held with the Anthracite Producers Association on the desirability of altering and introducing a second and possibly a third grade.Read more
Author:Van der Walt, PJDate:1958This paper presents a technical memorandum on tests carried out on the drewboy washer during the period February to August 1958.Read more
Author:La Grange, CCDate:1963The first series of tests in this programme was carried out in the letter half of 1962, and the results were communicated in FRI Technical Memorandum No. 21 of 1962.Read more
Author:Gericke, ELDate:1963This investigation was done at the request of Federale Vanadium, Bpk., who supplied 6 tons of their magnetic ore for this purpose.Read more
Author:Bonapace, ACDate:1971The drag coefficient of a solitary particle when moving relative to a fluid, when rising or falling vertically in a stationary fluid, is a well-known function of the particle Reynolds number.Read more
Author:Meintjies, AADate:1966The document elaborates on a recording methanometer (prototype) that will determine the effect of mining operations and other factors such as changes in atmospheric pressure on the discharge of methane concentration for extended periods.Read more
Author:Van Doornum, G.A.W; Van Doornum, GAWDate:1957The tests reported herein carried out on behalf of Messrs. Davidson and Company, the suppliers of the dust collecting equipment, for the purpose of determining the performance of the installation.Read more
Author:Sevenster, PG; Meintjies, ADate:1964This paper is concerned with a different type of coal degradation which occur not only in coal already broken from the seam but is also noted on exposed faced in the workings of collieries where it may cause dangerous working conditions.Read more
Author:Meintjies, AADate:1967A preliminary study was made of the application of pyrolysis-gas chromatography to coal dust. A correlation between the explosibility index of a coal and the nature of its volatile matter would prove useful.Read more
Author:Van Eck, BDate:1961This report details the results of two performance tests carried out on a Wemco-drum Dense Medium washing plant at Elandsberg colliery in January, 1961. As this was the first drum type dense medium separator to be installed in this country ...Read more
Author:Quass, FWDate:1946In order to establish the relative suitable for steam raising purposes of South African anthracite, firing tests were carried out in an experimental furnace on a number of nut size largely on the anthracite.Read more