X射线矿石分选设备的发展及应用

随着高品位矿产资源的日益减少,低品位矿产资源不断地应用,碎磨和选矿成本持续上升。在矿石入磨前采用智能分选装备抛出低品位矿石和废石,提高矿石入磨品位,可以显著降低磨矿成本。X射线分选机用于预选抛废,在节省成本、改善企业能源利用结构、改善环境情况、提高入选边界品位、延长企业服务年限具有积极作用。本文着重介绍了X射线透射分选机、X射线辐射分选机的发展历程与研究现状,包括设备工作流程,设备各系统原理与特点,国内代表性厂家设备的预选试验结果。

Using Computer Vision and Intelligent Classification Techniques for the Classification and Selection of Brazilian Nuts

Aiming to improve the processes involved in the industrial beneficiation of the Brazilian nuts, this work used a new methodology based on concepts of computer vision and intelligent classification, with a focus on two of the various stages of the processing： classification according to the origin and selection. Using the proposed methodology for the selection of the nuts it was possible to distinguish between intact and broken nuts and between good and spoiled nuts with a very high percentage of correct identifications. Also to evaluate the efficiency of the proposed methodology, visual tests by human subjects were performed for the classification of the nuts, the results demonstrated that the intelligent techniques performed the same or better than the visual classification.