Ash Depression in Fine Coal Flotation Using a Novel ...
grinding, the coal was screened to 75, +38 µm to be used as a feed in all flotation e− xperiments. The particle size distribution of the flotation feed showed a P 80 value of 45 um. The proximate analysis of the 75, +38 µm coal (flotation feed) is shown in− Table 1. Proximate analysis was conducted as per ASTM D317213 standardsAll ...