| The Study on a new type of equipment for reduction of manganese ore can solvethe needs of manganese resources in china and improve the internationalcompetitiveness, which has great significance for the coordinated development ofChina’s sustained economy. Therefore, a new production equipment to reduce oregrade manganese dioxide by biomass has been proposed in this thesis. The keyproblems in the process of designing rotary kiln have been researched by the finiteelement analysis of key parts and components by ANSYS software. The researchwork has been done in this thesis includes the following aspects:1. The process flow diagram of Manganese ore reduction system was formulatedaccording to the requirements of manganese reduction technology. The materialproperties of the biomass and manganese dioxide ore powder in each stage wereanalyzed. Several transportation methods were proposed for the different stages of thematerial. A set of process systems equipment was developed, which can reducemanganese dioxide to manganese oxide with biomass as a reducing agent based onthe comparison of these transportation modes.2. The Structural design of the reaction rotary kiln was designed. Four kinds ofreaction rotary kiln structure were designed according to the characteristics of thematerial in reaction stage. The final program of the rotary kiln structure wasestablished through comparison and analysis of these four design schemes. The designparameters of rotary kiln inner structure were calculated, and the key parts andcomponents were designed, including the rolling ring, catch wheel, kiln hood and kilninlet hood. The appropriate lubrication method was selected.3. A kind of rotary kiln end elastic sealing device was designed. The sealingdevice has the advantages of good abrasion resistance, high temperature resistance,good sealing effect and simple structure. The negative impact on the sealing whichcaused by the changes of the kiln body shape and position tolerance and the runout inrun time was eliminated. It had an active effect on improving the kiln temperature. Itplayed a positive role in improving the kiln temperature and reduce the kiln heatdissipation.4. The reaction rotary kiln was analyzed by the finite element method using thesoftware ANSYS, including the selection of the supporting position, rolling ring deformation and the occasional round of contact problems. The force and load ofthese parts were analyzed deeply. It will provide guarantee for safe operation andreliability of the rotary kiln, and act as theoretical guidance for the future update ofrotary kiln structure.5. The temperature control method of the rotary kiln was studied. According tothe process requirements of temperature, the kiln body was wrapped by asbestos asthe heat preservation method. In addition, the thermocouples and its digital displaydevice were used to track and monitor the reaction of rotary kiln temperature, whichcan improve the controllability of the system greatly. |
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