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在选矿厂中,磨矿-分级的任务是使有用矿物同脉石达到单体分离而又不过粉碎。磨矿-分级机组运转情况的优劣直接影响选矿厂产品的产量和质量,它是选矿工艺过程中的关键工序;另外,磨矿-分级机组也是全厂耗电量最大的。因此,我们在实现首钢大石河选矿厂自动化过程中,首先试验研究了一次磨矿-分级机组闭路磨矿的自动控制。大石河选厂采用阶段磨矿和阶段选别流程(图1)。一次磨矿之后即进行磁选,要求严格
In the concentrator, the task of grinding-grading is to separate the useful minerals from the gangue masses without crushing them. Grinding ore - classification of the merits of the operation of the unit directly affect the output and quality of the dressing plant products, it is the key process in the beneficiation process; In addition, grinding - grading unit is the largest power plant. Therefore, during the process of automating Shougang Dashihe Concentrator, we first conducted an experimental study on the automatic control of a closed-circuit grinding of a grinder-grading unit. Dashihe dressing plant using stage grinding and stage sorting process (Figure 1). A grinding after the magnetic separation, demanding