Φ3.8m×13m闭路水泥磨能耗管理浅析

水泥粉磨是水泥“两磨一烧”生产过程中的重要环节,直接关系到水泥的产质量和系统能耗.在充分发挥磨机产能的同时,持续降低粉磨系统能耗、优化生产成本、提高自动化信息化水平、降低员工工作强度等,具有重要意义.本文通过介绍粉磨工艺管理、系统能耗控制、实施技改措施等方面的技术与成果,并结合生产运行实际,探讨了持续优化粉磨系统指标的技术及措施.     

水泥联合粉磨系统增产改造

Φ4.2 m×11.5 m水泥磨,采用辊压机+打散机+管磨机+O-Sepa高效水平涡流选粉机组成的高效联合粉磨系统(磨尾采用单风机系统),P.O42.5级水泥产量只有135 t/h左右,系统产量较低、粉磨电耗高。改造证明,严格控制入磨物料水分与提高熟料易磨性及对管磨机内部的改进,均对提高粉磨系统产质量、降低电耗有利;同时,对中控操作中存在的误区必须及时纠正,杜绝走极端;"分段粉磨"的能耗要低于单段粉磨能耗。对于管磨机长径比较小的粉磨系统,应充分利用辊压机高效"料床粉磨"的技术优势,辊压机段做功越多,整个粉磨系统越节电。     

磨机的综合节能改造

粉磨系统在水泥生产中占有十分重要的地位,粉磨耗电量占水泥综合电耗的65％左右,粉磨生产成本占水泥成本的35％左右。我国大多数水泥企业是采用开路磨,它存在着能耗高、产量低、产品质量不稳、无法生产高标号水泥的问题。因此,对粉磨系统进行技术改造,已成为一项十分重要的工作。我们根据庆安四洋水泥有限责任公司的实际情况,谈一下磨机综合节能改造的方法和体会,供同行参考。     

我国水泥助磨剂的研究进展与发展趋势

<正>0引言在水泥生产过程中,粉磨电耗约占水泥生产总电耗的65%~75%,粉磨成本占生产总成本的35%左右[1]。因此,粉磨对水泥生产企业的效益影响极大。从水泥工业粉磨技术的发展来看,改善粉磨状况,主要采用两种方法:一是对粉磨系统进行改造,二是在粉磨过程中添加水泥助磨剂。在磨机中掺入助磨剂,可以显著改善粉磨进程,提高磨机的台时产量,降低粉磨能耗。水泥助磨剂还可以激发工业废渣的活性,提高工业废渣的利用效率,降低水泥熟料的使用量,从     

联合粉磨系统提产降耗的措施

介绍了Φ4 m×13 m水泥磨与辊压机组成的联合粉磨（开路）系统,针对在生产过程中系统存在的物料离析造成辊压机做功差、产量低、能耗高等问题,通过对辊压机系统和磨机系统采取一系列技术改造和工艺调整,包括更换陶瓷研磨体等措施,实现了提高水泥磨台时产量降低能耗的目的。     

MYTOS＆TWISTER干法在线激光粒度分析系统及其应用

0引言 在水泥生产过程中，最终产品的粒度分布是判断水泥质量的重要因素之一，同时也决定了水泥制品的最终强度。为了获得所要求的粒度分布，一般采用粉磨和分级的方法。由于水泥的粉磨过程需要消耗大量的能量，若能对粉磨过程中的产品粒度分布进行实时控制，不但可以提高产品质量，同时还可减少系统中重复循环的粗颗粒数量，提高能效和粉磨机的产量。     

水泥粉磨工艺现状与技术改造的探讨

传统水泥粉磨工艺水泥磨机产量低,能耗高,成品水泥质量不高,生产成本高,必须要加强对水泥粉磨工艺进行改造升级。通过发展高效的辊压机预粉磨系统,水泥磨机二仓改用能耗更低的陶瓷球,半终粉磨在不影响水泥品质前提下的合理应用,通过以上改造升级的手段,解决传统水泥磨粉工艺存在产量低、能耗高、水泥品质波动大等问题,还可以可以提高水泥的整体质量,提高水泥的性能。     

Φ4.2 m×13 m水泥粉磨系统节能降耗改造

我公司有一台Φ4.2 m×13 m球磨机，水泥粉磨系统采用CLF180-120辊压机（处理能力850 t/h、1400kW×2）+V型选粉机（V8820型静态气流分级机）+高效选粉机+Φ4.2 m×13 m开路管磨机（主电机功率3 550 kW）组成联合粉磨系统。 生产P·O42.5水泥，比表面积≥330 m2/kg、系统产量200t/h、粉磨电耗29 kWh/t。水泥磨台时产量发挥一般，能耗较同行业偏高。为了提高磨机台时产量，降低能耗，2022年12月，我们利用水泥销售淡季，通过提升辊压机和V型选粉机做功效率、改善磨内通风、控制磨内流速等措施，实现水泥磨台时产量达到230 t/h，水泥工序电耗降到24 kWh/t的效果。     

水泥颗粒粒级及形貌对其性能的影响研究

1粉磨是水泥生产的重要工艺环节，它不仅决定了水泥生产的单位电耗，而且对水泥性能也有重要的影响。长期以来，水泥熟料粉磨都是在球磨机中进行。球磨机具有对物料适应性强，能连续生产，生产能力大；粉碎比大、易于调节粉磨产品的细度；结构简单。坚固、操作可靠、维护管理方便等特点。但是，其能量的有效利用率仅有2％－5％，其余绝大部分都转变成热能而消耗。近10年来，水泥工艺粉磨技术得到了长足的发展，传统的磨机得到了改造，并采用了新型选粉机闭路系统，立磨和挤压磨也相继得到应用，这大大降低了粉磨能耗，提高了粉磨效率。由于…     

降低球磨机一仓研磨体平均粒径对水泥质量的影响

科学选择研磨体填充率、装载量以及级配设计是提升球磨机综合产量、减少能耗的基本措施。以辊压机+球磨机联合粉磨系统为例，分析了降低球磨机一仓研磨体平均粒径对磨机粉磨效率的影响，结果表明：合理调整球磨机一仓研磨体的平均粒径，提升了磨机综合粉磨效率，减少出磨水泥筛余，保障水泥强度，符合工程建设要求。     

乙烯酮(双乙烯酮)下游产品废水的治理技术

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。     

几种乙炔加压设备性能的比较

阐述并比较了几种加压设备在乙炔加压清净过程中的性能和特点。     

三种煤样燃烧热的测定

本文通过三个厂家提供的三种煤样燃烧热的测定,由测定结果综合得出3号煤样燃烧最完全、燃烧热也最大,是三个煤样中最好的一种。     

Semi-empirical equation of state of metals. Equation of state of aluminum

A semi-empirical equation of state for metals is described. Its capabilities are demonstrated by the example of the equation of state for aluminum. New experimental data are presented on the location of the isentrope of aluminum for unloading from the state at p = 229.71 GPa on the shock adiabat to an aerogel (SiO₂) of density 0.08 g/cm³. __________ Translated from Fizika Goreniya i Vzryva, Vol. 44, No. 2, pp. 61–75, March–April, 2008.     

水泥水化热测定方法综述

水泥水化热是中、低热水泥和核电工程用水泥的一项关键的技术指标。全球范围内测定水泥水化热的方法有溶解法、直接法/半绝热法、等温传导量热法三种。本文总结了中、美、欧相关方法标准,对其测试原理、仪器设备、试验过程等方面进行了比对,并对其在领域的应用做了简单的概括。     

Calorimetric and Computational Study of Enthalpy of Formation of Diperoxide of Cyclohexanone

A thermochemical rather simple experimental technique is applied to determine the enthalpy of formation of Diperoxide of ciclohexanone. The study is complemented with suitable theoretical calculations at the semiempirical and ab initio levels. A particular satisfactory agreement between both ways is found for the ab initio calculation at the 6–311G basis This set level. Some possible extensions of the present procedure are pointed out.     

小议汽车涂装工艺设计对涂装成本的影响

论述了涂装工艺设计对涂装设备投资、涂装生产成本的影响。     

Measurement of the gradient of viscosity with composition of mixtures of non-ideal gases

A perturbation viscometer is a differential capillary viscometer that measures the logarithmic viscosity gradient of the viscosity-composition curve for gas mixtures. Measurements are made at different gas mixture compositions. Integration of the logarithmic viscosity gradients measured over the full composition range gives the mixture viscosity relative to the viscosity of one of the pure components of the gas mixture. This method is attractive because, for measurements of equal precision, integration of the gradients is potentially an order of magnitude more precise than measurement of the viscosities directly. It can also work at high and low temperatures and perhaps high pressures.The perturbation viscometer has been used to make measurements on ideal gas mixtures at ambient and elevated temperatures. The situation is more complicated when the gas mixtures are non-ideal. Extra effects due to density differences, molar volume change on mixing and differential thermal expansion may be measured in addition to the desired viscosity change producing systematic errors in the results. Thus, a more sophisticated apparatus is required. The standard perturbation viscometer has been modified to separate out the extra effects to permit measurement of the true change in viscosity. In addition, the theoretical operation of the modified apparatus has been revised to account for the design changes to permit calculation of the viscosity-composition profiles from the results.The apparatus has been tested using helium-HFC-125 mixtures and two new viscosity-composition profiles are presented for these mixtures at 23 and . Internal consistency tests have been used to confirm that the data produced are of high quality with an estimated uncertainty in the viscosity ratio data at of 0.9% and at of 1.5%.     

塔设备改造选型的分析

就当前扩产增容中塔设备设计和改造时板式塔和填料塔的选型问题加以分析。在评述目前国内常用的几种塔板和新型填料之后，着重介绍一种新型塔板（导向梯形浮阀塔板）和一种新型填料（波环填料——乾隆帕克）。     

Effect of degree of deacetylation of chitin on the properties of chitin crystallites

In the present article, chitin from crab shell was systematically deacetylated using a NaOH treatment with control of the reaction time. The degree of deacetylation, monitored using solid-state NMR, revealed that the reaction was pseudo-first order. Based on this, swollen and NaOH-saturated particles are proposed as the reaction system. The weight loss of the partially saponified and neutralized samples after HCl hydrolysis increased linearly with the degree of deacetylation. The crystallinity of the samples was found to increase after acid hydrolysis. According to conductimetric titration, the surface charge density of the crystallites, after acid hydrolysis, was found to increase with base treatment time. The effect of surface charge on the formation of a chiral nematic phase, due to the rodlike nature of the crystallites, was explored. These results show that because the contribution of charged particles to the ionic strength was significant the double layer compression was affected, especially since the surface charge density was close to the Manning limit. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65:373–380, 1997