Szego mill

The Szego mill has been used for dry as well as wet grinding of coal, in both water and oil, for the preparation of coal-slurry fuels. To grind coal in water to the standard boiler size (80 per cent < 74 im) takes about 7 MJ/Mg (20 kWh/tonne). For micronized grinding, to a 15 xm median size, 2-3 passes through the mill are required and the specific energy... 

Since its grinding volume is some 30-40 times smaller than that of a ball mill for the same task, the Szego mill is compact for its capacity. It is characterised by relatively low specific energy consumption, typically 20-30 per cent lower than in a ball mill, and flexibility of operation. It can give a large reduction ratio, typically 10-20, and grinds material down to a 15-45 xm size range. 

Gandolfi, E. A. J., Papachristodoulou, G. and Trass, O. Powder Technology 40 (1984) 269-282. Preparation of coal slurry fuels with the Szego mill. 

Koka, V. R. and Trass, O. Powder Technology 51 (1987) 201-204. Determination of breakage parameters and modelling of coal breakage in the Szego mill. 

Addition of an account of the construction and operation of the Szego Grinding Mill (Chapter 2). 

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