HOt Products
The surface-mined run-of-mine (ROM) coal from Bear Run mine is delivered by off-road truck to a 270-tonne hopper. Reclaimed at 1 800 tph, the ROM coal is conveyed to a crushing and screening building for reduction to 5 inch top size and then transported to one of the two 50 000 tonne raw coal stockpiles. Crushing reduces the overall topsize of the ROM coal so that it can be more easily handled and processed within the CPP. Crushing requirements are an important part of CPP design and there are a number of different types. Screening. Screens in screening plant are used to group process particles into ranges by size. Dewatering screens are used to remove surface water from the product. strength properties (coal HGI and specific energy of crushing), various feed sizes that would be tested under different feed coal breakage characteristics (product size distribution), and methods. The sizes to be tested included 50.0 by 25.0 mm, 25.0 Khanyisa Colliery falls within the Witbank Coalfield. There are five major coal seams named 1 Seam through to 5 Seam from the base upwards which are generally contained in an approximately 70 m thick succession of Karoo sediments (Vryheid Formation) consisting predominantly of sandstone with subordinate mudstone, siltstone and shale. Crushing and breaking. Run-of-mine coal must be crushed to an acceptable top size for treatment in the preparation plant. Typical crushing and breaking devices are feeder breakers, rotary breakers, hammer mills, and roll crushers. Sizing. Different cleaning processes are used on different sizes of coal.
DRA Global
Coal preparation plant Wikipedia
RI 9645 REPORT OF INVESTIGATIONS/1998
Major Mines & Projects Khanyisa Mine
Appendix E: Coal Mining and Processing Methods Coal