共查询到19条相似文献,搜索用时 62 毫秒
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《有色金属(冶炼部分)》1976,(5)
我厂对球磨机钢球的清理、分级、加球是一项长期未解决好的问题。去年底在党支部的领导下,选矿厂在清理球磨机的钢球时,采用了自制的钢球筛,使用效果良好。(一) 钢球筛它是用10号角钢制成,依次开有60、80、100毫米的孔道。钢球通过角钢滚道时,小于60毫米的即从60毫米的孔道漏下,60~80毫米 相似文献
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在选矿生产中,用人工补加钢球方式很难掌握合理的加球数量,容易造成磨机内亏球或多球,直接影响球磨机的处理量和磨矿细度。研究新型加球机,实现对磨矿介质钢球的数量进行合理的自动补加,对提高磨机工作状况的稳定性及提高磨机效率具有重要意义。马鞍山矿山研究院研制的JQ—1型自动加球机从1990年3月在梅山铁矿选厂二系列二次球磨机进行工业试验,于1991年3月通过部级技术鉴定。生产试用表明,该自动加 相似文献
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提高球磨机工作效率的有效途径 总被引:1,自引:0,他引:1
本文通过对球磨机磨矿过程基本原理的阐述,揭示了球磨机转速与填充率的关系,表明了正确选择磨矿介质、钢球尺寸,合理确定装球比例能够有效提高球磨机的工作效率。 相似文献
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采用球径半理论公式计算球径、破碎统计力学指导初装的配球、转移概率确定补球方案,并将该钢球级配制度应用于银山选矿厂。精准的补加球制度,降低了球磨机的钢球消耗和生产电耗,提升了磨矿效率。 相似文献
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针对梅山磨矿生产中存在的钢球充填率测量不准且波动大的生产难题,研究了钢球的磨损规律,提出钢球充填率的计算方法,合理确定钢球补加量,保证磨机钢球充填率和粒度特性处于最佳状态,磨矿效果有了明显改善。生产应用球磨机精确化装补球后,在磨矿细度相当的条件下,合格粒级含量增加1.33个百分点,球磨机磨矿台时提高2.9 t,且能获得比应用前更佳的最终分级溢流产品质量,-10μm产率降低1.23个百分点。 相似文献
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Sternad Dagmar; Duarte Marcos; Katsumata Hiromu; Schaal Stefan 《Canadian Metallurgical Quarterly》2001,27(5):1163
Rhythmically bouncing a ball with a racket was investigated and modeled with a nonlinear map. Model analyses provided a variable defining a dynamically stable solution that obviates computationally expensive corrections. Three experiments evaluated whether dynamic stability is optimized and what perceptual support is necessary for stable behavior. Two hypotheses were tested: (a) Performance is stable if racket acceleration is negative at impact, and (b) variability is lowest at an impact acceleration between -4 and -1 m/s2. In Experiment 1 participants performed the task, eyes open or closed, bouncing a ball confined to a 1-dimensional trajectory. Experiment 2 eliminated constraints on racket and ball trajectory. Experiment 3 excluded visual or haptic information. Movements were performed with negative racket accelerations in the range of highest stability. Performance with eyes closed was more variable, leaving acceleration unaffected. With haptic information, performance was more stable than with visual information alone. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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球磨机的使用范围通常在水泥、建材、化肥等生产领域,具体的使用功能主要是将这部分材料在粉碎之后再进行细致粉碎,从而得到达到需求的物质材料。球磨机是依靠齿轮传动工作,在工作过程中球磨机常会出现振动的现象,了解到球磨机振动的原因,可以有效的提高球磨机的工作效率,保持球磨机的正常运行。本文对球磨机的振动原因进行分析,提出相应的解决方法发,供同行参考。 相似文献
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Learning of an aiming task has been shown to be specific to the sources of afferent information available during practice. However, this has not been the case when a one-hand ball-catching task has been used. The goal of the present study was to determine the cause of these conflicting results. 16 undergraduates practiced an interception task in either a normal vision condition or a ball-only condition. They were all then transferred to the ball-only condition, using either the same ball trajectories as in acquisition or different ones. Being transferred from a normal vision condition to a ball-only condition resulted in a significant increase in spatial interception errors, thus supporting the specificity of practice hypothesis. Using new ball trajectories in transfer caused a significant increase in error for all participants. The pattern of errors observed when new ball trajectories were used suggests that participants had difficulty correlating information about the location of their arm via proprioception and a combination of retinal and extra-retinal information about the ball trajectory. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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斜轧孔型设计是斜轧工艺中非常重要的环节,本文作者根据连铸生产实际提出孤要求,进行了双头斜轧铝球的孔型设计工作,此项工作对于实现CAS-OB工艺,提高连铸坯质量意义重大。 相似文献
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我厂现用的球磨机都是一个方向旋转。当大齿轮单面使用周期到后,需要翻面,这就需要停磨3~4天,且检修工作量也大。若使球磨机反转,就可以直接使用大齿轮的另一面。本文通过对小轴承座.大瓦等部位的受力分析,从理论方面对球磨机的反转可行性进行了分析。 相似文献