Recent Developments in Ore Breakage Characterization
Ore breakage characterization plays an essential role in the design and optimization of comminution circuits. Recently, the JKMRC comminution research team has developed a Rotary Breakage Tester (JKRBT). The JKRBT uses a rotor-stator impacting system, in which particles gain a controlled kinetic energy and are impacted against the stator, causing particle breakage. The first unit of industrialised JKRBT was installed at the Anglo Research in South Africa in March 2007, and five more JKRBTs are currently being fabricated for some of the worlds major mining companies.In addition to the JKRBT, an improved breakage model has been developed at the JKMRC,which more accurately describes the effect of specific energy, particle size and incremental breakage caused by repetitive impacts.The validation outcomes show that the JKRBT, together with the new breakage model, generate statistically similar breakage parameters to the traditional drop weight tester (DWT), but with significant advantages over its predecessor. The limitations of the DWT, specifically its lack of precision of the energy input, the lengthy time required to run individual tests and the challenges encountered in testing small particles, have all been overcome by the JKRBT.The recent developments in the JKRBT and the new breakage model offer several prospective applications. These developments have the potential to revolutionize the ore breakage characterization in the years to come.
Comminution Grinding Modelling
F. N. Shi T. Kojovic S. Larbi-Bram E. Manlapig
Julius Kruttschnitt Mineral Research Centre The University of Queensland, Australia
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
290-299
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）