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按阶段磁选流程研究贫磁铁矿矿石可选性以及对其工业应用的合理性进行技术经济评价时,除了必须知道原矿的可磨性以外,还要查明需要再磨的中矿的可磨性。但用地质普查中所取的少量矿样(约150公斤)进行实验室可选性研究时,由于矿样少,无法进行测定中矿可磨性的物理试验。此时,采用按原矿可磨性来评价中矿可磨性的方法,由于原矿与选别产品的物质组成的物理性质的差别,会导致一定钓失真。确定可磨性的多数方法是按
According to the stage of magnetic separation process to study the selectivity of lean magnetite ore and the technical and economic evaluation of the rationality of its industrial application, in addition to knowing the grindability of the ore, it is also necessary to identify the medium ore that needs to be reground Grindability. However, when laboratory studies were conducted on a small amount of ore samples (about 150 kg) collected during the geological survey, physical tests for determining the grindability of medium mines were not possible due to the small number of ore samples. In this case, the method of evaluating the grindability of the mines according to the grindability of the mines results in certain fishing distortions due to the differences in the physical properties of the mines of the mines and the sorting products. Most methods of determining grindability are by