Author:Viljoen, GADate:1972The first apparatus operating on the principle of a change in the buoyant force with progressive settling was constructed along the following lines. A suitable shaped glass cylinder was suspended from one arm of a chemical balance so that it ...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:Viljoen, GADate:1973Amplifier to be described was developed and built as a requirement for the "Delayed Coking" apparatus constructed at the Institute.Read more