Online spiral grade control By A.M. Russell Online control of gravity spiral concentrators has not been widely implemented. A new technique making use of process water jets for the control of spiral product quality is proposed, and which is suitable for retrofitting to existing spiral circuits. Tests carried out at a chromite plant processing UG2 flotation tailing have shown that online control of the spiral plant concentrate grade using this technique is feasible.
A literature review and interpretation of the properties of high-TiO2 slags By H. Kotzé The properties of high TiO2 slags are markedly different from those of slags encountered in many other metallurgical processes. The objectives of this paper are firstly to review TiO2 slag properties, and secondly, to attempt to correlate published experimentally measured data with theoretically based parameters, which will enable the application of the measured properties to a wider range of slag compositions within the pseudobrookite-TiO2 slag system.