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Comparison of the Different Ways of the Ball Bond Work Index Determining

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Document pages: 15 pages

Abstract: When designing concentrating plants, the selection of the technological comminution scheme for beneficiation, the type, quantity and size of the equipment, the determination of optimal grinding regimes and the calculation of equipment loads are carried out by preliminary studies of grinding in semi-industrial or laboratory conditions. Semi-industrial tests ensure the most reliable information for calculating loads for equipment. However, this requires a significant amount of ore samples, a lot of labor and the pilot plants. Fred Bond published an article in 1961, which, described the procedure for testing ores for a Bond Ball Index. This parameter is still one of the most demanded tools in the design, evaluation and optimization of ball grinding plants around the world.However, the testing methodology for the Bond Dall Index requires about 10 kg of sample, the standardized equipment and takes an average of 6 to 12 hours. Many researchers have tried to find alternative methods for determining this Index - to reduce labor costs, sample weight, or to get one without standard equipment. This paper was carried out with the purpose of reviewing, classifying and testing the existing methods for determination the Bond Ball Mill Index. The authors of the considered methods were Aksani B. and Somnez B., Todorovic D., Berry T. F. and Bruce R. W., Horst W. E. and Bassarear J. H., Ahmadi R. and Shahsavari Sh., Kapur P. C., Gharehgheshlagh Hojjat H., JKTech, Lewis K. A., etc. The paper presents the relative errors of the obtained value from the actual Bond Ball Mill Index, the average working hours for the testing procedure and necessary equipment.

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