水泥行业清洁生产潜力评价方法的建立与应用

判断水泥企业的清洁生产水平，从而推动企业开展清洁生产是一件非常有意义的工作。通过利用生命周期法和专家打分的方法，制定出评价指标原则和建立评价指标体系，运用层次分析法计算权重，最终得出水泥企业的清洁生产水平潜力。通过三个水泥厂的实例检验，证明本评价方法能够达到科学地评估水泥企业的清洁生产程度和发掘企业的清洁生产潜力的目的。     

基于水泥工业碳减排核算实现碳达峰的研究——以贵州省水泥产能节能减排为例

以贵州省水泥产能节能减排为例,分析了水泥行业通过技术性减排、市场调节、建立和完善碳排放管理体系等途径减少碳排放,为去产能做好水泥常态化错峰生产的措施和方法。以生态环境部《省级二氧化碳排放达峰行动方案编制指南》中的二氧化碳排放分析方法为原则,计算出水泥生产的二氧化碳排放达峰目标,对于重点行业和重点领域实现碳达峰、碳中和中长期目标具有重要意义。     

水泥窑协同利用页岩屑技术可行性研究

按照固体废物减量化及资源化的处理要求，探讨页岩气开发中产生的含油率低于1％的油基岩屑 的资源化处理，因其组成性质与煤矸石等水泥原料性质相近，将残渣掺混煤矸石作为水泥辅料进行水泥生产， 通过试验研究探索其可行性。文章考察其对水泥生产工艺参数及能耗的影响，结果表明：使用页岩屑后，能耗 提高13MJ/t；水泥生产过程中烟囱SO2排放浓度比空白时偏高，但均符合GB16297—1996《大气污染物综合 排放标准》；采用0.5％页岩屑代替煤矸石所产出的水泥产品，样品的细度、凝结时间、强度等水泥质量指标符合GB175—2007《通用硅酸盐水泥》要求。     

消除黄磷厂废渣污染环境的有效途径

利用黄磷厂废渣作煅烧水泥熟料的矿化剂、水泥混合材和利用黄磷厂废渣生产胶凝材、白水泥是消除黄磷渣污染环境的有效途径；通过影响黄磷渣作水泥混合材和生产胶凝材因素的研究，推荐了提高黄磷渣作水泥混合材的掺量及生产优质胶凝材的工艺条件；黄磷渣的开发利用不仅可使企业获得显著的经济效益，而且可减少磷渣堆放占用耕地和消除磷渣对环境的污染，具有显著的经济效益、社会效益和环境效益。     

一盘未下完的棋──一起环保强制执行案始末

湖南省常德市湘北水泥二厂是鼎城区一家骨干乡镇企业，年设计生产水泥13．2万吨。近两个月来，与鼎城区环保局围绕超标排污费问题引发了一连串令人始料不及的事情。湘北水泥二厂拒不按期缴纳1994年1～6月超标排污费，鼎城区环保局依法作出了行政处罚决定，并通过鼎城区人民法院强制执行。湖北水泥二厂有关领导扬言：此事并没有完，强制执行了上半年，下半年怎么办！言下之意，好戏还在后头。——演变至此，事出有因早在去年年初，鼎城区环保局根据国家环保法律法规，结合湘北水泥二厂污染排放的实际·考虑到企业的承受能力，给该厂下达了全…     

加强水泥企业环境监督管理保护城区大气环境

龙岩市地处闽、粤、赣三省交界，是龙岩地区行署所在地、也是闽西经济。文化、交通中心。通过40年的建设，龙岩市已发展成为具有以冶金、建材、卷烟、造纸、化工、电力等为主体的小型工矿城市。改革开放以来，龙岩市抓住有利时机，充分利用本地丰富的石灰石资源．大力发展水泥工业。据不完全统计，龙岩市辖区内已建成投产和在建的水泥企业有76家，119条生产线，年设计生产能力达64463万吨’（含水泥熟料），总投资近14亿元人民币。现已有70家水泥企业投入生产，生产能力528．85万吨。水泥行业已成为龙岩市经济的主要支柱行业之一。但是，水…     

对水泥企业生产环境负荷之浅析

基于生命周期理论，采用CNI环境影响评价方法对我国水泥生产的环境负荷进行了定量分析。结果表明：水泥生产的环境影响主要体现在温室效应、不可再生能源消耗和不可再生资源消耗，其环境负荷分别占对应环境影响类型世界总负荷的2.76％，2.34％和1.39％，2006年我国水泥生产的环境负荷约占世界总负荷的1.28％，其中，立窑生产工艺、湿法回转窑生产工艺和新型干法生产工艺的环境负荷分别为0.84％，0.12％和0.32％。通过行业结构调整，用新型干法生产工艺取代其他落后的生产工艺，可使我国水泥生产的环境负荷降至世界总负荷的1％左右。     

水泥企业大气污染物总量核查探究

随着社会不断进步,各行各业蓬勃发展,环境污染也日趋严重,节能减排已成为我国环境保护的主要方面,而这一工作的基础是进行污染物的总量核查评估。为进行水泥行业大气污染物总量核查,通过现场监测法、在线监测法、排污系数法、理论计算法以及无组织排放法进行污染物排放量核算,再利用层次分析法计算权重,最后通过综合指数计算得出结果。     

水泥砂浆电磁屏蔽效能的研究

针对现代通讯与电子技术设备的发展带来的电磁辐射污染,采用电磁屏蔽功能建筑材料是解决电磁辐射危害的一种有效途径。本文对一种钢丝网水泥砂浆建筑材料具有屏蔽效能的原理进行了分析,在此基础上给出一种钢丝网网孔尺寸并计算其屏蔽效能,计算结果表明该钢丝网在中短波频段具有较高的屏蔽效能。将该网孔尺寸的钢丝网嵌入水泥砂浆制备出带钢丝网复合结构的水泥样板并对其屏蔽效能进行测试,通过对测试结果进行分析,验证了这种钢丝网水泥样板在中短波频段内具有较好的屏蔽效能。     

袋装油井水泥库的粉尘治理

袋装油井水泥库的粉尘治理王喜祥，张天保（中原油田钻井工程一公司）一、水泥粉尘的产生过程和危害我们公司的袋装油井水泥库自１９８８年１月投产以来，每年吞吐水泥量约４万余ｔ，是一座较为现代化的油井水泥转运输送、装车的水泥库。但由于设计不合理，在生产过程中环...     

低压脉冲除尘器(长袋式)在水泥机立窑除尘中的应用

介绍了长袋低压脉冲袋式除尘器的工作原理，比较客观详实的分析了在实际除尘过程中的前景及应用除尘效果。实践证明，袋式除尘器在水泥机立窑烟气除尘中适应性强，除尘效率可达99％以上，经济效益显著，是一种较理想的除尘设备．尤其适合在水泥行业中的应用。     

Utilization of cement kiln dust (CKD) in cement mortar and concrete—an overview

Solid waste management is one of the major environmental concerns around the world. Cement kiln dust (KKD), also known as by-pass dust, is a by-product of cement manufacturing. The environmental concerns related to Portland cement production, emission and disposal of CKD is becoming progressively significant. CKD is fine-grained, particulate material chiefly composed of oxidized, anhydrous, micron-sized particles collected from electrostatic precipitators during the high temperature production of clinker. Cement kiln dust so generated is partly reused in cement plant and landfilled. The beneficial uses of CKD are in highway uses, soil stabilization, use in cement mortar/concrete, CLSM, etc.Studies have shown that CKD could be used in making paste/mortar/concrete. This paper presents an overview of some of the research published on the use of CKD in cement paste/mortar/concrete. Effect of CKD on the cement paste/mortar/concrete properties like compressive strength, tensile strength properties (splitting tensile strength, flexural strength and toughness), durability (Freeze–thaw), hydration, setting time, sorptivity, electrical conductivity are presented. Use of CKD in making controlled low-strength materials (CLSM), asphalt concrete, as soil stabilizer, and leachate analysis are also discussed in this paper.     

Utilization of cement kiln dust (CKD) in cement mortar and concrete—an overview

Solid waste management is one of the major environmental concerns around the world. Cement kiln dust (KKD), also known as by-pass dust, is a by-product of cement manufacturing. The environmental concerns related to Portland cement production, emission and disposal of CKD is becoming progressively significant. CKD is fine-grained, particulate material chiefly composed of oxidized, anhydrous, micron-sized particles collected from electrostatic precipitators during the high temperature production of clinker. Cement kiln dust so generated is partly reused in cement plant and landfilled. The beneficial uses of CKD are in highway uses, soil stabilization, use in cement mortar/concrete, CLSM, etc.Studies have shown that CKD could be used in making paste/mortar/concrete. This paper presents an overview of some of the research published on the use of CKD in cement paste/mortar/concrete. Effect of CKD on the cement paste/mortar/concrete properties like compressive strength, tensile strength properties (splitting tensile strength, flexural strength and toughness), durability (Freeze–thaw), hydration, setting time, sorptivity, electrical conductivity are presented. Use of CKD in making controlled low-strength materials (CLSM), asphalt concrete, as soil stabilizer, and leachate analysis are also discussed in this paper.     

Particulates pollution management and economic analysis of small rural enterprises in mountain areas: A case study of Wenquan town in China

At present, many rural enterprises in China's mountainous areas are developing rapidly, and due to poor planning and improper management, in an uncontrolled manner. These small enterprises are making atmospheric pollution far more serious and more difficult to control than before. Thus, as is the case with most developing countries, China is facing the challenge of managing the increased environmental pollution that is accompanying its economic development. This paper examines the case of cement dust pollution in the town of Wenquan in Sichuan province in order to determine how to adjust the relationship between development of rural enterprises and atmospheric environmental pollution in mountainous areas. Using the single objective linear programming method, and based on the principle of overall optimization, an optimal control plan for different pollution sources was worked out and an economic assessment on reclamation of cement dust was completed. According to our analysis, after implementation of this plan for four years, two months, the concentrations of suspended particles in Wenquan will achieve the requirement of the national third-order ambient air quality standard; the current serious dust pollution will be completely controlled; and the reclamation of cement dust will totally compensate for the cost of dust control and will result in 92,000 yuan of pure profit per year. At that time, the economy and environment will be in harmony.     

电改袋技术在回转窑窑头烟气净化中的应用

在对水泥生产线篦冷机尾气除尘进行分析的基础上,提出了电除尘改袋式除尘的必要性,可有效控制新型干法窑烟尘和粉尘的排放浓度;针对具体案例的使用结果进行了阐述。     

张店区水泥行业发展策略

调查发现，张店区水泥行业整体经营粗放，资源、能源消耗高，综合利用水平低，生产能力落后，其生产对环境造成了严重的粉尘、废气和噪声污染。基于此基本情况，根据水泥行业产业政策，建议张店区水泥行业进行工艺创新、材料创新，完善水泥产业链，环保部门要加大监察力度。     

浅谈3000t/d水泥生产线窑尾收尘系统改造

介绍了南阳航天水泥厂3000t/d水泥生产线窑尾收尘系统的改造背景、技术方案、施工方案和工程造价。改造采用了在原窑尾反吹风高温玻纤袋收尘器旁并联一台同类型单排袋式收尘器的方案,以增大窑尾袋收尘器过滤面积和降低过滤风速。该窑尾收尘系统的改造取得了明显的成效。     

湿式除尘器在小水泥厂非水硬性粉尘除尘中的应用

本文阐述了小水泥厂非水硬性粉尘采用湿式除尘器的可行性分析，指出在效率、阻力、泥浆处理，腐蚀解决等方面，均能满足要求，并举出国内近年成功实例四则。     

Properties of steel foundry electric arc furnace dust solidified/stabilized with Portland cement

Electric arc furnace dust from steel production is generated in considerable amounts worldwide and needs to be treated as hazardous waste. The aim of this study was to investigate the properties of electric arc furnace dust solidified/stabilized by using Portland cement. Mortar and paste samples were prepared with varying waste-to-binder ratios between 0% and 90%. A comprehensive experimental program was designed including XRF characterization, setting time, unconfined compressive strength, and toxicity characteristics leaching procedure (TCLP), synthetic precipitation leaching procedure (SPLP), and acid neutralization capacity (ANC) tests. The results were evaluated in order to determine if the solidified /stabilized product can be disposed of at a landfill site with domestic waste or at a segregated landfill. The effect of using sand on S/S performance was also investigated. The results indicated that the solidification /stabilization process using PC helps the heavy metals to be bound in the cement matrix, but the TCLP leaching results exceeded the EPA landfilling limits. The SPLP leaching results conformed to the limits implying that the waste or S/S products can be disposed of at a segregated landfill; however the low ANC of the S/S products reveals that there may be leaching in the long-term. The sand used in the mortar samples adversely affected the S/S performance, causing higher heavy metal leaching levels, and lower pH levels in the leachate after the TCLP extraction than those measured in the leachate of the paste samples.     

An overview of waste materials recycling in the Sultanate of Oman

Various wastes and by-product materials are generated in the Sultanate of Oman including reclaimed asphalt pavement (RAP) aggregate, demolition concrete, cement by-pass dust (CBPD), copper slag, petroleum-contaminated soils (PCS), discarded tires, incinerator ash, and others. Recycling of such materials in construction is not practiced. Research data are also minimal into the potential use of selected materials in construction applications. This paper will present the results of several laboratory studies conducted into the use of PCS in asphalt concrete mixtures; on the use of CBPD in soil stabilization and flowable fill mixtures; on the utilization of copper slag and CBPD as cementitious materials; on the use of incinerator ash in cement mortars; and on the use of RAP aggregate in road bases and sub-bases. Laboratory data generally indicate that it is feasible to partially reuse some of these materials in construction provided that economic incentives and environmental concerns are taken into consideration.