Cone Structure Design For Enrichment By The Rotatory Drum In Centrifugal Concentrator And Its Optimization Analysis

There are two main types of centrifugal concentrators widely used in domesticmetallic mines, horizontal and vertical. Problem is that both of them can’t operatecontinuously, hence lower the processing efficiency. An overseas design of complexmotions in vertical centrifugal concentrator has achieved large-scale, autonomous andcontinuous operation of mineral processing, with proved Falcon and Knelson asrepresentatives that have taken a great deal of market shares at home and abroad. Asimports, they are durable and easy to operate, but the long maintenance period of thequick-wear drum and the expensive price of them make it necessary to develop anefficient and durable centrifugal concentrator at home, replacing imports. To face thefierce competition, the domestically made STLTM centrifugal concentrator has tocombine its own development with overseas technical advantages. The developmentand application of STL100type centrifugal concentrators, needs to be conducted withthe application of reasonable structure design optimization.Concentrators with centrifugal separation mechanism need to meet therequirement of varied processes and parameters. According to the design purpose, acone structure of rotatory drum for enrichment at the60G centrifugal field is proposed.Achievable overall design scheme is done according to the design purpose, andrequirement and the structure of the rotatory drum enrichment cone is designed andthe strength of it is analyzed. At the same time, the paper elucidates the way tomeasure the capacity and energy consumption of the concentrator. PLC controlsystem applications make autonomous and continuous operation possible besidesguaranteeing the separation function of large-scale centrifugal concentrators.A3D model is established with the structural parameters of the rotatory drumenrichment cone.As the enrichment cone is the core part in centrifugal concentratorand the basis of overall design and separation realization, static and dynamic analysis to find out the vulnerable points of the enrichment cone seems essential. Staticanalysis shows the maximum deformation and stress distribution; according to themodal analysis, the natural frequency and vibration modes are obtained so that the therange of low natural frequency can be evaded.Despite advanced structure design and reasonable structure optimization, fieldperformance of the rotatory drum enrichment cone will inevitably be limited byprocessing capability. Considering that, dynamical balance testing instrument shouldbe deployed in-situ to test the dynamical balance to ensure the production applicationsafe and effective.