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粉矿仓堵塞原因与助流系统 被引量:4
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作者 吴佑俭 吉万健 刘健 《金属矿山》 CAS 北大核心 2015年第S1期72-76,共5页
选矿厂储存细粉料的粉矿仓由于物料性质、矿仓结构、生产和自然等多方因素造成矿仓内物料经常性堵塞,严重影响选矿流程的畅通。通过分析研究粉矿仓内物料堵塞的机理,利用直接剪切试验和Jenike剪切试验,找出了物料含水量、粒度、矿仓结... 选矿厂储存细粉料的粉矿仓由于物料性质、矿仓结构、生产和自然等多方因素造成矿仓内物料经常性堵塞,严重影响选矿流程的畅通。通过分析研究粉矿仓内物料堵塞的机理,利用直接剪切试验和Jenike剪切试验,找出了物料含水量、粒度、矿仓结构、仓壁材质等因素对物料内摩擦角和外摩擦角的影响规律,建立了粉矿仓下料斗防拱的数学模型,并为矿仓结构设计和仓壁材质选型提供了参考依据。鉴于目前采用的防堵破拱方法效率低、安全性差等不利因素,利用气动助流的原理设计出了一套矿仓清堵助流系统,通过介绍该系统在金堆城钼选厂和南山矿铁选厂的成功应用,展示了该系统的多种有益效果。 展开更多
关键词 粉矿仓 堵塞 内摩擦角 外摩擦角 气动 机械助流
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Multi Domain Design of Fluid Machinery
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作者 Andrea Perrone Luigi De Napoli +1 位作者 Clara Nino Antonino Morabito 《Journal of Mechanics Engineering and Automation》 2015年第6期348-354,共7页
The scope of the paper is the design of a fluid machinery with a multiphysics procedure, through CAD (computer-aided design)-CAE (computer-aided engineering)-CAx (computer-aided technologies) tools. The study of... The scope of the paper is the design of a fluid machinery with a multiphysics procedure, through CAD (computer-aided design)-CAE (computer-aided engineering)-CAx (computer-aided technologies) tools. The study of a wind turbine is a perfect example of a project that requires an interdisciplinary team design, in fact for such a project mechanical structure, and CFD (computational fluid dynamics) designers are necessary. In addition, in the last years, the multi domain design has been supported by the continuous development of software for computer-aided design and the unceasing increase of the connection between performances and computer costs: the final aim is to propose the instruments that assist the designer throughout all the steps of the project. The multi domain design, illustrated in this article, is based on how to design the wind turbine, and it is not about process management and manufacturability. In particular, in the article, the emphasis will be placed on the integration between CAD and mathematical software of general type and on the CAD-CAE integration. 展开更多
关键词 Multi domain design fluid machinery CAE CAD ALE (arbitrary Lagrangian-Eulerian).
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