An Evaluation of the Australian Coal Flotation Standards

Mining operations often send samples for testing to commercial laboratories. Unless a customised test is requested, they expect laboratories use standard procedures, which are reproducible. A thermal coal and metallurgical were sent eight laboratories, requested perform basic flotation (AS 4156.2.1-2004) sequential procedure test, i.e., tree 4156.2.2-1998). This study compared the reports produced by various them with requirements laid out Australian standards. It was found that many elements missing in most cases, probably due fact some of standard, such as size analysis, offered other services. The tests generally agreed one another whilst presented more variations. quantitative analysis variation yield–ash curves conducted using dynamic time warping (DTW). approach can be used numerically compare statistical comparisons.