Grinding flotation of bituminous coal of different ...
Sep 10, 2015· Bituminous coal is softer than anthracite and much more ultrafine particles will emerge after grinding. The ultrafine coal particles finer than 10 μm are usually difficult to float (Polat et al., 2003, Forbes, 2011). So grinding of oxidized bituminous coal might deteriorate flotation performance due to the increase of ultrafine particles.