【摘要】：國內(nèi)外金屬礦山廣泛使用的離心選礦機一般有臥式與立式兩大類型，這兩種離心選礦機都存在的不足是只能間斷性生產(chǎn)，從而降低了選礦效率。國外設(shè)計了一種復(fù)合運動的立式離心選礦機實現(xiàn)了大型、自動、連續(xù)選礦工作要求，其中以技術(shù)成熟的法爾肯(FALCON)離心選礦機和尼爾森離心選礦機(Knelson concentrators)為代表占據(jù)了國內(nèi)外主要市場。作為進口設(shè)備它們均具有高效耐用與操作簡單等優(yōu)點，但由于其易損件轉(zhuǎn)鼓富集錐維修周期長，價格昂貴，所以迫切需要國內(nèi)開發(fā)出高效耐用的離心選礦機替代進口設(shè)備。STL系列離心選礦機作為國有自主設(shè)計生產(chǎn)設(shè)備面對競爭日益激勵的市場，基于自身的發(fā)展基礎(chǔ)結(jié)合國外技術(shù)優(yōu)勢，采用合理科學的結(jié)構(gòu)設(shè)計與優(yōu)化方法，實現(xiàn)了STL100型離心選礦機的開發(fā)與應(yīng)用。 依據(jù)離心重力選礦原理設(shè)計的選礦設(shè)備，設(shè)計目標是在60G的離心場中轉(zhuǎn)鼓富集錐結(jié)構(gòu)設(shè)計需要滿足不同選礦工藝與工藝參數(shù)要求。圍繞設(shè)計目標與要求，完成可行的離心選礦機整體設(shè)計方案，并針對核心部件轉(zhuǎn)鼓富集錐的結(jié)構(gòu)進行設(shè)計與強度分析；闡述了如何對離心選礦機的生產(chǎn)能力與能耗統(tǒng)計分析；PLC控制系統(tǒng)的應(yīng)用，在保障大型化STL100離心選礦機分選功能的基礎(chǔ)上實現(xiàn)了自動化生產(chǎn)。 在確定轉(zhuǎn)鼓富集錐結(jié)構(gòu)參數(shù)后建立三維模型，由于轉(zhuǎn)鼓富集錐是離心選礦機核心部件，是整體設(shè)計與分選技術(shù)實現(xiàn)的基礎(chǔ)，所以對轉(zhuǎn)鼓富集錐及相關(guān)部件進行必要的靜動態(tài)分析找出各部件的薄弱環(huán)節(jié)。通過靜態(tài)分析，可以得出各部件結(jié)構(gòu)的最大變形與應(yīng)力分布情況；通過模態(tài)分析，可以得出各部件固有頻率和各階振型，選擇驅(qū)動電機時，，應(yīng)盡量避開低階固有頻率范圍。 雖然轉(zhuǎn)鼓富集錐通過了先進的結(jié)構(gòu)設(shè)計與科學的結(jié)構(gòu)優(yōu)化分析，但在現(xiàn)實生產(chǎn)加工過程中仍然會受加工能力影響，需要采用現(xiàn)場動平衡儀對其進行動平衡性能檢測以保證離心選礦機的最終生產(chǎn)應(yīng)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.
【學位授予單位】：吉林大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD455.5

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