共查询到20条相似文献，搜索用时 140 毫秒
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前言: 回转窑是用来对散状或浆状物料进行加热处理的热工设备,属于回转圆筒类设备。窑问世已逾百年,其发展速度很快,主要趋势是由小向大的方面发展。目前,世界上最大的回转窑其简体直径为7.6米,长度为232米。国内目前最大的氧化铝回转窑其规格为φ4.5×110M。大规格的回转窑,其总重(不包括耐火内衬)都在千吨左右。 由于窑规格的不断增大,因而与窑筒体相配套的各主要零部件在体积、重量方面也相应增大,用来支撑窑体的支承装置的挡 相似文献
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针对5000t/d熟料生产线回转窑头档轮带处频繁红窑掉砖事故进行分析,就如何避免回转窑窑砖损毁提出了建议. 相似文献
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水泥回转窑窑体,尺寸大,如果在制造厂整体焊接加工完成,无法运输到安装现场,一般大都采取现场组对焊接完成。一般在施工现场焊接装配的过程中都采用大吨位吊车吊装来完成。焊接效率低,占用吊车时间长。大吨位吊车台班费用高。本文探讨了水泥回转窑窑体现场组对焊接的工艺装备-滑动支座和龙门式吊架,提出了滑动支座和龙门式吊架的结构模型及稳定性校核过程,以及使用该种滑动支座和龙门式吊架的施工方法。 相似文献
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本文概括了制定烘窑制度的依据，分析了现行烘窑制度存在的问题，并提出了回转窑低水泥系列耐火浇注内衬烘窑制度的改进方法。 相似文献
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李庆阳 《内蒙古科技与经济》2005,(20):103-103
在回转窑的操作中，挂好窑皮及保护好窑皮非常重要。除了挂好窑皮以外更重要的是保护好窑皮，本文重点从挂好窑皮及保护好窑皮两个角度提一些粗浅的看法，望同行批评指正。并提宝贵意见。 相似文献
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回转窑安装过程中筒体的组对施工,是整个回转窑安装施工中重中之重的工序之一,筒体组对的质量直接影响整个回转窑的质量,本文主要针对回转窑筒体组对施工中的工艺措施进行探讨。 相似文献
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中国铝业青海分公司炭素厂煅烧车间回转窑石油焦煅烧过程中产生的烟气及冷却窑对高温煅后焦冷却过程中所产生的烟气中,均含有大量的SO2,而目前车间的环保设施主要是用来除去烟气中的粉尘,对烟气中的SO2基本上无法除去,排放到大气中造成环境污染.随着人们环保意识的加强、国家环保规定的日趋严格及中铝公司对节能减排和环保要求的加强,炭素厂煅烧车间回转窑及冷却窑烟气脱硫治理势在必行.本文对目前烟气脱硫主导方法--HGLW型脱硫塔采用湿式吸收法脱硫除SO2的原理、工艺特点及其效果进行了阐述. 相似文献
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本文以水泥回转窑的控制为对象,采用模糊控制器来实现控制。阐述了控制器的设计思想,并成功应用于水泥回转窑的控制中,取得了理想的控制效果。 相似文献
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A. Sharifi M. Aliyari Shoorehdeli M. Teshnehlab 《Journal of The Franklin Institute》2012,349(1):162-183
Rotary kiln is the central and the most complex component of cement production process. It is used to convert calcineous raw meal into cement clinkers, which plays a key role in quality and quantity of the final produced cement. This system has complex nonlinear dynamic equations that have not been completely worked out yet. In conventional modeling procedure, a large number of the involved parameters are crossed out and an approximation model is presented instead. Therefore, the performance of the obtained model is very important and an inaccurate model may cause many problems for designing a controller. This study presents hierarchical wavelet TS-type fuzzy inference system (HWFIS) for identification of cement rotary kiln. In the proposed method, wavelet fuzzy inference system (WFIS) with two input variables is used as sub-model in a hierarchical structure and gradient descent (GD) algorithm is chosen for training parameters of antecedent and conclusion parts of sub-models. The results show that the proposed method has higher performance in comparison with the other models. The data collected from Saveh White Cement Company is used in our simulations. 相似文献
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城市生活垃圾气化处理技术 总被引：1，自引：0，他引：1
城市生活垃圾的气化是一种新型的垃圾处理技术,它具有高效的能源利用率和良好的环保特性,并且气化和熔融技术相结合以其严格的污染控制、显著的减容性和高效的资源回收率等优点被认为是城市生活垃圾焚烧处理最具有潜力的替代技术.本文综述了城市生活垃圾气化处理技术的原理、工艺流程及其国内外发展现状.列举讨论了固定床、气流床、流化床和回转窑等主要垃圾气化反应器的特点,并对影响垃圾气化的重要因素进行了分析.此外本文对废物衍生燃料(RDF)的气化以及垃圾气化熔融处理技术也作了介绍. 相似文献
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In this paper a summary is given of the various processes which have been proposed for making the potash in the natural silicates available as a fertilizer.Experimental trials of a new rotary kiln process for treating feldspar are described, which depends upon a previous treatment before furnacing, consisting of a method of aggregating or clumping the mix so that chemical contact of the reacting substances is brought about during the subsequent processing. The qualitative and quantitative results obtained on a number of experimental trials on a mill scale of operation are presented and discussed. It is shown that it is possible to economically manufacture a potash fertilizer containing free lime from feldspar, and for a sufficiently low cost to make an industry based upon the method worthy of consideration. 相似文献
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A rotary variable admittance device and its application in vehicle seat suspension vibration control
Donghong Ning Shuaishuai Sun Jianqiang Yu Minyi Zheng Haiping Du Nong Zhang Weihua Li 《Journal of The Franklin Institute》2019,356(14):7873-7895
In this paper, a novel semi-active variable admittance (VA) concept is proposed, and a seat suspension prototype with a magnetorheological fluid damper based rotary VA device is designed, manufactured, and experimentally validated. The conventional inerter with a single flywheel has a constant inertance, which can effectively improve the suspension performance by being integrated into a mechanical network with springs and dampers. The proposed rotary VA device comprises a gear reducer, two flywheels and a variable damping (VD) device which is used to connect the two flywheels. With carefully designing, the rotary VA device is compacted and is similar with a VD device in size. The rotary VA device is installed in the centre of a seat suspension's scissors structure to form a VA seat suspension. According to the test results, the equivalent inertance of the seat suspension can vary from 11.3 Kg–76.6 Kg with a 3 Hz frequency and 5 mm amplitude sinusoidal movement by changing the current from 0 A–1 A. By analysing the system characteristics, a hybrid controller with two acceleration feedbacks is proposed. Thereafter, the seat suspension and controller are validated in experiments by comparing the performance with a conventional passive seat suspension. The random vibration test shows the excellent performance of the proposed seat suspension; the frequency weighted root mean square acceleration of the seat is reduced by 43.6%, which indicates a great improvement of the ride comfort. The VA device shows great prospect in the suspension application. 相似文献
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在对国内工业炉窑烟气余热回收现状分析的基础上,探讨了烟气冷凝余热回收技术在工业炉窑上应用的节能及环保效果,并给出了冷凝回收利用的应用方案,为工业炉窑低温烟气余热利用提供参考。 相似文献