| Under international background which the environment, energy, climate andother issues are concerned, energy saving and low-carbon economy have becomeglobal consensus. Cement plays a vital role in our rapid industrialization andurbanization phase. While building green China which is low-carbon andenvironmentally needs the technology level of cement industry to put forward higherrequirements.Cement which is made from the ore to cement production will go through"broken ore—ore grinding—calcining—clinker grinding" and many otherprocesses, and each process of grinding work must be done by wear-resistantmaterials. Because life is too short, frequently change, increase downtime of somewear resistant material products caused loss is higher than the value of thehigh-performance wear-resistant material. Wear caused huge economic loss and evenlead to major accidents and frequent replacement components greatly influence andrestricted the production of cement. The cement grinding processes of raw materialsand clinker play important roles in cement production. According to the cementindustry association statistics, integrated power consumption of cement productionuses60~70%for grinding, of which97%has been wasted effort. Energy efficiency isvery low. We can see that how to improve the wear resistance of the core componentsof roller press and the efficiency of grinding of materials are technical challengeswhich cement producers are facing. How to reduce the wear of surface on thewearable part, increase the service life of components, improve equipment utilizationand grinding efficiency, implement green remanufacturing in the cement industry andpromote the development of circular economy is important.This article is inspired by the biological structure and morphology ofwear-resistant surface, from the point of view of bionics to design and optimize theroller surface morphology of roller press, and study on properties of rollers. Learnfrom some organisms such as dung beetles, pangolin, between lizards and tidalshellfish exhibit wear resistance properties, based on the bionic wearable theorydesign surface morphology on roller, explore the relationships of rollers’ wear and crushing on its surface morphology, and analyze wear resistant mechanism andcrushing mechanism of bionic pit shaped rollers preliminary. Provide theoreticalsupport for solving the encountered problems such as wear and energy consumptionin cement grinding process. Specific tasks include the following sections: Firstly,learn the structure and surface characteristics of dung beetles and other creatures.Design and process the rollers with bionic pit-shaped structure. Complete the weartest of the bionic rollers, Explore the primary and secondary of various factors impacton the wear resistance and obtain the corresponding regression equation. Secondly,use ANSYS finite element analysis software to do the structural analysis of rollers.Obtain stress and strain distribution. Analyze the wear mechanism of bionic pitshaped rollers preliminary by combining its distribution with structural characteristicsof rollers. Thirdly, use the experimental optimal design method to determine thetesting program, and complete particle crushing test of the rollers. Use range analysismethod to analyze impact which is the various factors on the crushing capability, andobtain the regression equations by multiple linear regression analysis. Finally, useANSYS/LS-DYNA software to do display dynamic analysis on rollers, simulatematerial crushing process, and obtain maximum force of different rollers to materialsin crushing process. While take advantage of the high-speed camera to complete thesingle particle crushing test of bionic pit shaped rollers, then analyze for the crushingmechanism of bionic pit shaped rollers preliminary. |
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