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我公司2002年建成的2000t/d生产线上,生料制备选用德国非凡公司MPS4000B辊式磨配套的SLS3750选粉机。2010年的一次巡检中发现生料磨选粉机运行异常,停机检查后确定为选粉机下轴承损坏。据非凡公司提供设备说明书介绍,更换下轴承时需先将选粉机转子取下降到粗砂锥上,拆下轴承支撑架、传动减速机、润滑油管及连接法兰,然后用 相似文献
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我公司8^#磨系统为Ф4.2×11m+RPV100-63辊压机+N-2000 O—Sepa高效选粉机组成的联合粉磨系统,自2000年6月份投产以来,仅偶尔班次能达产达标,在我国通用水泥实施GB/T17671-1999〈水泥胶砂强度检验方法〉(ISO法)新标准后,整个磨机台时大幅下降,电耗增加,这无疑对我公司是雪上加霜。 相似文献
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河南省三联水泥厂有2条干法预热器回转窑生产线,年产水泥30万t,一线原有1台φ2.2 m×6.5 m开路水泥磨,随着水泥新标准的实施,以及市场需求量增大,原有的水泥磨系统已不能满足生产需求,经考察决定使用NHX500型高效转子式选粉机,将原系统改造为圈流粉磨系统。该工程于2002年4月开始,2002年8月投入运行,取得较好的效果。 相似文献
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我公司Φ2.4m×7m水泥磨闭路系统于1998年9月选择了湖山水泥机械厂生产的NHX-700型转子式选粉机替代原Φ2.0m旋风式选粉机,使用中发现水泥早期强度有所降低。本文就此进行了分析,并提出调整方法。1选粉机改造前后水泥粉磨系统状况水泥粉磨系统主要由失重秤微机配料、水泥磨、选粉机、磨尾除尘器、输送设备等组成,磨机主电动机功率475kW,有效内径2.3m,磨机有效长度6.25m,其中:Ⅰ仓2.5m,Ⅱ仓3.75m。 改造前后除研磨体级配外,水泥粉磨系统的主要工艺流程等均没有发生较大变化,研磨体级配见表1。2影响水泥质量的原因分析改选粉… 相似文献
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我公司5000t/d生产线水泥粉磨系统采用Ф4.2m×13m水泥磨、辊压机、V型选粉机和SX4000改进型涡流选粉机组成联合粉磨系统。自2010年5月份投产以来,曾先后对5个企业生产的助磨剂进行了不同时期的大磨比对试验和使用, 相似文献
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乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。 相似文献
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The objective of the study was to explore the effect of the degree of deacetylation (DD) of the chitosan used on the degradation rate and rate constant during ultrasonic degradation. Chitin was extracted from red shrimp process waste. Four different DD chitosans were prepared from chitin by alkali deacetylation. Those chitosans were degraded by ultrasonic radiation to different molecular weights. Changes of the molecular weight were determined by light scattering, and data of molecular weight changes were used to calculate the degradation rate and rate constant. The results were as follows: The molecular weight of chitosans decreased with an increasing ultrasonication time. The curves of the molecular weight versus the ultrasonication time were broken at 1‐h treatment. The degradation rate and rate constant of sonolysis decreased with an increasing ultrasonication time. This may be because the chances of being attacked by the cavitation energy increased with an increasing molecular weight species and may be because smaller molecular weight species have shorter relaxation times and, thus, can alleviate the sonication stress easier. However, the degradation rate and rate constant of sonolysis increased with an increasing DD of the chitosan used. This may be because the flexibilitier molecules of higher DD chitosans are more susceptible to the shear force of elongation flow generated by the cavitation field or due to the bond energy difference of acetamido and β‐1,4‐glucoside linkage or hydrogen bonds. Breakage of the β‐1,4‐glucoside linkage will result in lower molecular weight and an increasing reaction rate and rate constant. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 3526–3531, 2003 相似文献
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我厂3号回转窑(Φ4m×60m)生产线在1996年年底由SP窑(产量912t/d)改为NSP窑(产量1320t/d),预分解系统为四级旋风预热器带离线式分解炉 相似文献
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Conclusions It is significant that the purification on a single passage of viscose through porous ceramic corresponds to the result of a two-stage filtration of it in industrial filter-presses with standard fillings.Kiev Combine. Kiev Technological Institute of Light Industry. Translated from Khimicheskie Volokna, No. 3, pp. 20–22, May–June, 1969. 相似文献
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A refined nonlinear value of the main parameter of a material, i.e., the elongation modulus versus the instant temperature value, was suggested for introduction into the computational algorithm of tempering stresses. 相似文献