Flotation of bituminous coal slimes in the Cyclojet cell and a comparison of Cyclojet cell and Jameson cell in terms of their flotation performance [Siklojet hücresinde bitümlü şlam kümü rün flotasyonu ve Jameson hücresi jle flotasyon performanslarinin karşilaştirilmasi]

This study is aimed at describing in detail the working principle of a Cyclojet cell developed by the Department of Mining Engineering of Zonguldak Karaelmas University, Turkey, and testing it to find out whether it can be used in cleaning bituminous coal slimes. 80% of the bituminous coal slime used in the tests was finer than 53 µrn and it had an ash content of approximately 49%. By using the Cyclojet, the coal slimes yielded clean coal products having 11,32% ash content with 72,80% combustible matter recovery. Tests conducted in the Jameson cell with the same coal slimes produced clean coals having an ash content of 14,40% with 73,82% combustible matter recovery. A release test was also applied to the coal slimes in a mechanical cell in order to assess the flotation performance of the Cyclojet cell and compare it with that of Jameson cell. In conclusion, it has been established that the Cyclojet cell produces cleaner products than the Jameson cell with approximately the same flotation yields. The underlying reason is the cyclonic jet action (by centrifugal forces) occurring in the Cyclojet cell and a vortex flow on the cell surface