关键词: 贫细金属矿石资源, 关键技术, 高压辊磨机, 塔磨机, AFX复式流化分级机

Abstract: The current situation of key technology of dvevloping poor and fine metal ore resources is analyzed from ore crushing,grinding,classification by screening,grading and tailing disposal, etc., technical bottleneck of increasing resources development of large metal ore which is poor and fine were pointed, mainly show at "more crushing and less grinding" concept implementation inadequate,lag application of fine grinding technology,low efficiency of classification and especially fine classification,etc.. Aiming at abovementioned problems, the key equipment of realize "more crushing and less grinding" were introduced as the focal point—— high pressure roller mill and its typical processing configuration, the applicable condition,characteristic and application of various kinds of typical technologies were analyzed; as the most advanced fine grinding key equipment at present tower mill was introduced, characteristics of energy saving and reduce over mill of tower mill was emphasized; general applicability and high effectiveness of AFX compound fluidizedbed classifier were introduced. Popularization and application of these three key technologies are helpful to promote kynamics and benefit of developing China large poor and fine metal ore resources.

Key words: Poor and fine metal ore resources, Key technology, High pressure roller mill, Tower mill, AFX compound fluidizedbed classifier