The Use of Process Simulation Methodology in De-bottlenecking of Production Lines
In 2004, LKAB decided to start a basic engineering study in expanding its existing production lines at the Malmberget mine site. It was expected that some of the production lines would become bottlenecks with reference to capacity. In this study, the sorting plant is examined and the results show that several unit operations will be limiting under current operating conditions. An additional purpose with the study was to investigate how replacement of some machines would influence performance and if production plans for the coming years might be achieved.Steady-state simulations using the software ModsimTM were extensively used to study process performance for different operating conditions, such as iron content and size distribution in run-of-mine ore. Model parameters were derived from pilot plant data and when possible from existing circuits. A complication for the simulations was the lack of relevant data and therefore some of the initial results were only indicative.The result shows that installation of new screens would give a much better operation, but also new crushers would be an improvement. This, since they can be run with full crusher chamber and tighter CSS.During 2007, most of the proposed remedies were implemented and the result is that the bottlenecks are gone, and the grades and material balances are even better than what was envisioned from the simulations.
Cobbing Crushing Process simulation Process design
E. Alldén (O)berg B.I. P(a)lsson K.T. Tano
Mining Division, LKAB, Sweden Division of Mineral Processing, Department of Chemical Engineering and Geosciences,Lule(a) Universit Research and Development, LKAB, Sweden
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
2388-2395
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）