AN INVESTIGATION ON SINGLE-PARTICLE IMPACT BREAKAGE FUNCTIONS OF A GOLD ORE BY DROP-WEIGHT TECHNIQUE

Yıl 2017, Cilt: 154 Sayı: 154, 207 - 213, 04.04.2017

Ömürden Genç

https://doi.org/10.19111/bmre.78208

Cited By: 1

Öz

Impact breakage functions for a gold ore from Bergama region (Turkey) was estimated based on the single-particle impact breakage distributions of particles obtained from drop weight tests. For this purpose, a modified manual version of a JK Tech drop-weight test device was used. Effect of specific comminution energy (Ecs) on impact breakage distributions were investigated. Relationship between specific comminution energy and impact breakage product fineness (t10) parameter was establised. Ecs-t10 model given in the literature was successfully fitted to the breakage test results. Ecs-t10 impact breakage model for the gold ore was proposed to be used in breakage function estimation. t-family curve approach was established to estimate single particle breakage functions of the gold ore. For this purpose, t-family curves were modelled and variations of empirical breakage functions for the gold ore were estimated on different impact energy levels for comminution process modelling.

Anahtar Kelimeler

Gold Ore, Comminution, Modelling, Breakage Function, Drop-Weight Test

Kaynakça

• Austin, L.G., Luckie, P.T. 1971. Methods for determination of breakage distribution parameters. Powder Technology, 5, 45-52.
• Austin, L.G., Weller, K.R. 1982. Simulation and scale-up of wet ball mills. XIV International Mineral Processing Congr., Toronto, Canada, 8.1-8.24.
• Awachie, S.E.A. 1983. Development of crusher models using laboratory breakage data. PhD Thesis. The University of Queensland, JKMRC, Australia.
• Genç, Ö. 2002. An investigation of the breakage distribution functions of clinker and additive materials. MSc Thesis. Hacettepe University, Mining Engineering Department, Turkey.
• Genç, Ö., Benzer, A.H., Ergün, Ş.L. 2004. Single particle breakage characterization of materials by drop weight testing. Physicochem. Probl. Miner. Process. Poland, 38, 241-255.
• Genç, Ö., Benzer, A.H., Ergün, Ş.L. 2014. Analysis of single particle impact breakage characteristics of raw and HPGR-crushed cement clinkers by drop weight testing. Powder Technology. 259, 37-45.
• Hukki, R.T. 1961. Proposal for a Solomonic settlement between the theories of von Rittinger, Rick and Bond. Trans SME/AIME, 220, 403-408.
• Leung, K. 1987. An energy based ore specific model for autogeneous and semiautogenous grinding. PhD Thesis. The University of Queensland, JKMRC, Australia.
• Man, Y.T. 2000. A Model-based scale-up procedure for wet, overflow ball mills. PhD Thesis. Julius Kruttschnitt Mineral Research Centre, Department of Mining, Minerals and Materials Engineering, The University of Queensland, Australia.
• Morrell, S., Man, Y.T. 1997. Using modelling and simulation for the design of full scale ball mill circuits. Miner. Eng. 10, 12, 1311–1327.
• Napier Munn, T.J., Morrell, S., Morrison, R.D., Kojovic, T. 2005. Mineral Comminution Circuits Their Operation and Optimization. JKMRC Monograph Series in Mining and Mineral Processing, No.2, The University of Queensland, Brisbane, Australia.
• Narayanan, S.S. 1985. Development of a laboratory single particle breakage technique and its application to ball mill modelling and scale-up. PhD Thesis. Julius Kruttschnitt Mineral Research Centre, The University of Queensland, Australia.
• Narayanan, S.S. 1986. Single particle breakage tests: A review of principles and applications to comminution modeling. Bull Proc. Australas. Inst. Min. Metall. 291, 4, 49-58.
• Narayanan, S.S. 1987. Modelling the performance of industrial ball mills using single particle breakage data. Int. J.. Mineral Process. 20, 211-28.
• Schönert, K. 1988. Fundamentals of particle breakage. Course notes. University of Witwatersrand, Division of Continuing Engineering Education, Johannesburg, Section F6.
• Schönert, K. 1991. Advances in comminution fundamentals and impacts on technology. Aufbereit.-tech. 32, 487-494.
• Tavares, L.M., King, R.P. 1998. Single-particle fracture under impact loading. Int. J. Miner. Process. 54, 1-28.
• Weedon, D.M. 2001. A perfect mixing matrix model for ball mills. Minerals Engineering. 14, 10, 1225-1236.
• Weller, K.R., Sterns, U.J., Artone, E., Bruchard, W.J. 1988. Multicomponent models of grinding and classification for scale-up from continuous small or pilot scale circuits. International Journal of Mineral Processing, 22, 19-147.
• Yashima, S., Kanda, Y., Sano, S. 1987. Relationships between particle size and fracture energy or impact velocity required to fracture as estimated from single particle crushing. Powder Technology. 51, 277-282.
• Zhang, Y.M., Napier Munn, T.J., Kavetsky, A. 1988. Application of comminution and classification modelling to grinding of cement clinker. Trans. IMM. 97, C207-C214.