| Ore matching is equilibrium and control the quality of the ore, this is to rational utilization of mineral resources, improve the uniformity and stability of the useful mineral is mined and the quality of processed products,then get good economic benefits for mine. The bauxite ore matching is for alumina plant require ore grade to remain equilibrium, and it is determined by the characteristics of bauxite. Ore matching is a reliable way to take full advantage of bauxite,it has economical,simple accurate and remarkable benefit characteristics.At the same time,ore matching can reduce the volatility of selected quality of ore, and improve the recovery of mineral processing and smelting processing and product quality, reduce production cost.Chongqing bauxite mining areas are widely distributed and thickness of ore body is thin, ore block production capacity is relatively low, quite a lot of ore block production at the same time, six mining area recovery at the same time, Face up to more than90,the management is complexity. A/S is from3.66to8.57in design mining area, the discrepancy of ore grade is big, Therefore, it must equilibrium the mining area and stope ore to meet the requirements of A/S of alumina production in series process.This paper had a study on ore matching and optimization of multiple stopes,the main content had following several aspects:(1)Described the status of ore matching at home and abroad and the various processes of ore matching process in detail, and introduced the major batching method.(2)Discussed the principles and methods of ore matching and introduces the main ore matching model, Summarized the multi-objective optimization method and analyzed the advantages and disadvantages of various methods, established the foundation for optimization study of Chongqing bauxite ore matching.(3) Optimization of the ore grade information. Analyzed the cause of the error of Chongqing bauxite ore grade data, detailed sampling method of the mine and its shortcomings,proposed improved sampling method.(4)Compiled short-term mining plan. Established ore matching model according to the mine production requirements.Used multi-objective genetic algorithm and single objective genetic algorithm to solve ore matching model,and complied the monthly production schedule and the daily production schedule foe mine,it had a very important effect on mining production. |
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