TECHNICAL MECHANICS
ISSN (Print): 1561-9184, ISSN (Online): 2616-6380
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UDC 622.73
Technical mechanics, 2014, 3, 114 - 121
EVALUATION OF RATE FOR FINE ORE GRINDING BY VARIOUS MILLS
Pryadko N. S., Strelnikov G. A., Ternovaya Ye. V., Grushko V. A., Pyasetsky N. Yu.
| ABSTRACT |
A kinetic analysis of ore grinding in ball, rod and jet mills is carried out. Studies of grinding
in different-type mills demonstrated the possibility of describing this process using calculations
of the expectation and a nor-mal deviation of the grainulometric composition of material.
It is found that for fine ore grinding the curves of the kinetics equations form square-law
parabolas, the factors of which depend on material properties and the mill type.
Studies in rates of material grinding have been based on the analysis of variations in the granulometcic
composition of a crushed material structure, i.e. grinding kinetics. The grinding rates of limited classes
of poly-metallic ore, poor copper-nickel ore in tumbling mills, slag and quartz sand in a jet mill
are determined. It is shown that the grinding rate for fractions of large particles is decreasing
in its effect and is sign-variable in behav-ior for fractions of average and fine particles.
It has been suggested that rod, ball and jet mills be used in series at various stages for effective
grinding materials in a closed cycle.
| KEYWORDS |
fine grinding, drum mill, jet mill, granulometric composition, grinding rate
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| REFERENCES |
1. Nogaeva K. A. Studies of kinetics of grinding polymetallic ore from Kutesay 2 deposit (in Russian) / K. A. Nogaeva, T. T. Arstanbekov, G. Sh. Baykelova // arch.kyribnet.kg/uploads/KSTUNOGAEVA2010-21.pdf
2. Rakaev A. I. Regularities for grinding base copper-nickel ore using drum mills (in Russian) / A. I. Rakaev, P. A. Shumilov // Vestnik MGTU. – 2009. – Vol. 12, No 4. – P. 638 – 643.
3. Pilov P. I. Cutting in power consumption for closed cycles of fine ore grinding (in Russian) / P. I. Pilov, N. S. Pryadko // Metallurgicheskaya i Gornorudnaya Promyshlennost. – 2013. – No 6. – P. 75 - 80.
Copyright (©) 2014 Pryadko N. S., Strelnikov G. A., Ternovaya Ye. V., Grushko V. A., Pyasetsky N. Yu.
Copyright © 2014-2018 Technical mechanics
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