离心选矿机转鼓富集锥结构设计与优化分析
发布时间：2018-08-16 15:51
【摘要】：国内外金属矿山广泛使用的离心选矿机一般有卧式与立式两大类型，这两种离心选矿机都存在的不足是只能间断性生产，从而降低了选矿效率。国外设计了一种复合运动的立式离心选矿机实现了大型、自动、连续选矿工作要求，其中以技术成熟的法尔肯(FALCON)离心选矿机和尼尔森离心选矿机(Knelson concentrators)为代表占据了国内外主要市场。作为进口设备它们均具有高效耐用与操作简单等优点，但由于其易损件转鼓富集锥维修周期长，价格昂贵，所以迫切需要国内开发出高效耐用的离心选矿机替代进口设备。STL系列离心选矿机作为国有自主设计生产设备面对竞争日益激励的市场，基于自身的发展基础结合国外技术优势，采用合理科学的结构设计与优化方法，实现了STL100型离心选矿机的开发与应用。 依据离心重力选矿原理设计的选矿设备，设计目标是在60G的离心场中转鼓富集锥结构设计需要满足不同选矿工艺与工艺参数要求。围绕设计目标与要求，完成可行的离心选矿机整体设计方案，并针对核心部件转鼓富集锥的结构进行设计与强度分析；阐述了如何对离心选矿机的生产能力与能耗统计分析；PLC控制系统的应用，在保障大型化STL100离心选矿机分选功能的基础上实现了自动化生产。 在确定转鼓富集锥结构参数后建立三维模型，由于转鼓富集锥是离心选矿机核心部件，是整体设计与分选技术实现的基础，所以对转鼓富集锥及相关部件进行必要的静动态分析找出各部件的薄弱环节。通过静态分析，可以得出各部件结构的最大变形与应力分布情况；通过模态分析，可以得出各部件固有频率和各阶振型，选择驱动电机时，，应尽量避开低阶固有频率范围。 虽然转鼓富集锥通过了先进的结构设计与科学的结构优化分析，但在现实生产加工过程中仍然会受加工能力影响，需要采用现场动平衡仪对其进行动平衡性能检测以保证离心选矿机的最终生产应用安全高效。
[Abstract]:The centrifugal concentrators widely used in metal mines at home and abroad are generally of horizontal type and vertical type. The shortcomings of these two centrifuge concentrators are that they can only be produced intermittently, thus reducing the dressing efficiency. A kind of vertical centrifugal concentrator with compound movement has been designed abroad to realize the requirements of large-scale, automatic and continuous dressing. Among them, Fallken (FALCON) centrifuge concentrator and Nielsen centrifuge concentrator (Knelson concentrators) as the representative occupy the main market at home and abroad. As imported equipment, they all have the advantages of high efficiency, durability and simple operation, but because of the long maintenance period of the drum enrichment cone, the price is high. Therefore, there is an urgent need to develop an efficient and durable centrifuge concentrator instead of imported equipment. STL series centrifuge concentrator, as a state-owned independent design and production equipment, is facing the increasingly competitive market. Based on its own development foundation, it combines with foreign technological advantages. The development and application of STL100 centrifugal concentrator are realized by adopting reasonable and scientific structural design and optimization method. According to the principle of centrifugal gravity beneficiation, the design goal of the equipment is to meet the requirements of different processing technology and technological parameters in the design of drum enrichment cone structure in 60G centrifugal field. According to the design objectives and requirements, the whole design scheme of the centrifugal concentrator is completed, and the structure of the core drum enrichment cone is designed and the strength analysis is carried out, and the statistical analysis of the production capacity and energy consumption of the centrifugal concentrator is described. The application of PLC control system realizes automatic production on the basis of ensuring the separation function of large scale STL100 centrifuge concentrator. After determining the structural parameters of the drum enrichment cone, a three-dimensional model is established. Since the drum enrichment cone is the core part of the centrifugal concentrator, it is the basis of the overall design and separation technology. Therefore, the necessary static and dynamic analysis of the drum enrichment cone and related components is carried out to find out the weak links of each component. Through static analysis, the maximum deformation and stress distribution of each component structure can be obtained. By modal analysis, the natural frequencies and modes of each component can be obtained, and the low order natural frequency range should be avoided when selecting the drive motor. Although the drum enrichment cone has passed advanced structural design and scientific structural optimization analysis, it is still affected by the processing capacity in the actual production and processing process. In order to ensure the safety and efficiency of the final production of centrifugal concentrator, it is necessary to test its dynamic balance performance by using field dynamic balancing instrument.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD455.5
本文编号：2186448
[Abstract]:The centrifugal concentrators widely used in metal mines at home and abroad are generally of horizontal type and vertical type. The shortcomings of these two centrifuge concentrators are that they can only be produced intermittently, thus reducing the dressing efficiency. A kind of vertical centrifugal concentrator with compound movement has been designed abroad to realize the requirements of large-scale, automatic and continuous dressing. Among them, Fallken (FALCON) centrifuge concentrator and Nielsen centrifuge concentrator (Knelson concentrators) as the representative occupy the main market at home and abroad. As imported equipment, they all have the advantages of high efficiency, durability and simple operation, but because of the long maintenance period of the drum enrichment cone, the price is high. Therefore, there is an urgent need to develop an efficient and durable centrifuge concentrator instead of imported equipment. STL series centrifuge concentrator, as a state-owned independent design and production equipment, is facing the increasingly competitive market. Based on its own development foundation, it combines with foreign technological advantages. The development and application of STL100 centrifugal concentrator are realized by adopting reasonable and scientific structural design and optimization method. According to the principle of centrifugal gravity beneficiation, the design goal of the equipment is to meet the requirements of different processing technology and technological parameters in the design of drum enrichment cone structure in 60G centrifugal field. According to the design objectives and requirements, the whole design scheme of the centrifugal concentrator is completed, and the structure of the core drum enrichment cone is designed and the strength analysis is carried out, and the statistical analysis of the production capacity and energy consumption of the centrifugal concentrator is described. The application of PLC control system realizes automatic production on the basis of ensuring the separation function of large scale STL100 centrifuge concentrator. After determining the structural parameters of the drum enrichment cone, a three-dimensional model is established. Since the drum enrichment cone is the core part of the centrifugal concentrator, it is the basis of the overall design and separation technology. Therefore, the necessary static and dynamic analysis of the drum enrichment cone and related components is carried out to find out the weak links of each component. Through static analysis, the maximum deformation and stress distribution of each component structure can be obtained. By modal analysis, the natural frequencies and modes of each component can be obtained, and the low order natural frequency range should be avoided when selecting the drive motor. Although the drum enrichment cone has passed advanced structural design and scientific structural optimization analysis, it is still affected by the processing capacity in the actual production and processing process. In order to ensure the safety and efficiency of the final production of centrifugal concentrator, it is necessary to test its dynamic balance performance by using field dynamic balancing instrument.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD455.5
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