Guria, Chandan and Varma, Mohan and Mehrotra, S P and Gupta, Santosh K (2006) Simultaneous optimization of the performance of flotation circuits and their simplification using the jumping gene adaptations of genetic algorithm-II: More complex problems. International Journal of Mineral Processing, 79 (3). pp. 149-166.
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The binary-coded elitist non-dominated sorting genetic algorithm with the modified jumping gene operator (NSGA-II-mJG) is used to obtain global optimal solutions of flotation circuits. Several single-objective and multi-objective optimization problems are solved using the interconnecting cell linkage parameters (fraction flow rates) and the mean cell residence times as the decision variables. In the single-objective problem, the overall recovery of the concentrate stream is maximized for a desired grade of the concentrate. Two two-objective optimization problems are then solved. In one, the number of non-linking streams and the overall recovery of the concentrate are maximized simultaneously. This gives several simple circuits in a systematic manner with only marginally lower recoveries. In the other two-objective optimization problem, the overall recovery of the concentrate is maximized while the total cell volume is minimized. A three-objective problem (maximization of the overall recovery of the concentrate, maximization of the number of non-linking streams and minimization of the total cell volume) is then solved. All the problems constrain the grade of the product to lie at a fixed value. Finally, a complex and computationally intensive four-objective optimization problem is solved. The solution of several practical optimization problems in this study helps develop useful insights into the optimal solutions.
|Uncontrolled Keywords:||froth flotation; mineral processing; circuit/network optimization; global optimal; jumping gene; genetic algorithm; multi-objective optimization|
|Divisions:||Material Science and Technology|
|Deposited By:||INVALID USER|
|Deposited On:||28 Oct 2009 15:17|
|Last Modified:||15 Dec 2011 10:49|
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