浅论中小水泥厂自动化设计

通过对国际上中小水泥厂自动控制系统发展历史与模式的考察，论述了集散型控制系统在水泥生产中的广泛应用前景，并进而推及到水泥厂的整体自动化控制。     

辽宁科达机械设备有限公司

该公司为工业企业、大专院校、科研院所成套供应：材料试验，金属材料化学分析，测试检测，玻璃仪器等。拥有各行业的高级技术人才。可做水泥工艺、桥梁、公路、人防、耐火行业的工程设计，还可提供水泥厂全套生产工艺设备；水泥厂、耐火材料厂、公路工程、市政工程的化验室仪器设备及化学试剂、玻璃仪器等。     

谈水泥工业自动化

一、水泥工业自动化的发展和现状我国水泥工业自动化,技术水平有了较大的提高,应用规模上有了较大的发展。如昆明水泥厂(湿法生产)、江西水泥厂(日产2000吨的新型干法生产)的自动化水平已略高于发达国家的普遍水平。几年来,我国水泥企业引进了一些自动化仪表、计算机控制系统和若干生产工艺线,为发展、提高行业自动化水平起到了一定的作用。但总体上     

中小水泥厂技术进步机制的建立

中小水泥厂技术进步机制的建立陈雁安我国建材行业“九五”科技进步的目标中，提出了“建立与社会主义市场经济和集约型增长方式相适应的企业技术进步机制，使企业逐步成为技术改造、技术开发和科技成果转让的主体。”中小水泥厂建立技术进步机制的任务，同大企业一样，已...     

中小水泥厂优化技术结构提高熟料强度的思路

中小水泥厂优化技术结构提高熟料强度的思路陈雁安地方中小水泥厂大多兴办于７０年代初，规模小、技术起点低。７０年代末才逐步用机械化立窑代替土立窑，但仍以小规模为主。据湖北省建材系统的统计，全省有７７％的厂年产量低于８．８万吨，平均年生产能力只有３．３４万...     

浅谈水泥厂联合粉磨系统生产工艺技术管理

本文主要阐述了水泥厂联合粉磨系统生产工艺技术管理，提出一些建议以，供参考。     

WPK-1型水泥生料配料计算机控制系统获得成功

一种新的水泥配料方式——容积式减量法生料配料,采用WPK-1型工业控制电子计算机系统,最近在江苏省扬州水泥厂正式运行。国家建材局信息中心和无长自动化仪器设备厂针对水泥生产的连续性,粉尘大,劳动强度高的特点,研制了这套系统。这种配料方式,控制精度长期运行达1％,最高在0.4％以     

达标达产 工作回顾

以窑外分解技术为标志的新型干法水泥生产工艺,是当代世界最先进的水泥煅烧技术。我国从７０年代初开始进行窑外分解技术的试验研究和科技攻关。１９７６年,在太原水泥厂进行了烧煤窑外分解试验,在吉林四平市石岭水泥厂完成了Φ２．４×４０米的烧油窑外分解中间试验,...     

1990～1998拉美水泥工业发展概况

１９９０～１９９８年 ,拉美水泥工业不仅生产能力增长 ,而且节能高效的生产工艺和工厂自动化水平提高、限制水泥厂排放气体含尘量并达到理想的效果。从投资成本的提高也可看出其技术含量的提高。该阶段拉美共建水泥厂１８个 ,其中有５个粉磨站 ,１３个水泥生产厂 ,墨西哥建了６个 ,巴西建了４个 ,玻利维亚、乌拉圭、哥伦比亚各建１个。到１９９８年拉美共有水泥厂２０１个 ,生产能力从１９９０年的１３１００万吨增长到１９９８年的１５６００万吨 ,平均每个水泥厂的年生产能力为７８万吨 ,有１３个大型水泥企业的年生产能力总计为１５２０…     

用选溶法测定水泥中矿渣掺加量的探讨

本文主要讨论了利用水泥厂化验室现有化学分析仪器、设备、代替ＧＢ／Ｔ１２９６０──９１《水泥中矿渣掺加量的测定方法》中配套仪器设备进行矿渣掺加量的测定。通过多次试验及对结果的数理统计分析，检验了所述方法的精密度和准确度，论证了用水泥厂化验室现有仪器设备采用选溶法测定水泥中矿渣掺加量的可行性。     

浅析高速公路工程招投标中的最低评标价法

结合目前高速公路施工项目招投标活动的实际情况,阐述了最低评标价法的概念,归纳了其优点及存在问题,对完善最低评标价法提出几点策略,以期促进招标投标市场更加规范有序。     

Place-Making in Megaprojects in Melbourne

This article analyses state-led place-making practices in Melbourne. The two levels of government that influence planning in Melbourne make much of the city as ‘culturally vibrant’ and ‘creative’, and have incorporated creative city-inspired place-making principles into many layers of the planning system. An examination of the development of two mixed-use megaprojects in central Melbourne reveals however that ideals of culturally engaging public places, and indeed of creative landscapes for middle-class consumption, wither in the face of more basic imperatives for economic development. In these case studies the ‘creative city’, no matter how the idea is interpreted, has little traction either as a set of inclusive place-making principles or as a gentrification strategy. The article concludes that the creative city-inspired place-making objectives in the planning system at both state and local levels are ambiguous in their overall intents and completely unsupported by statutory controls. Such place-making objectives as are realised are the compromised results of the interplay of uncoordinated decisions, delivered at the pleasure of the developer.     

Pathogens in septage in Vietnam

Septage is widely acknowledged as a major source of infectious pathogens while disposal of septage, and the operation and maintenance of septic tanks, is not regulated in many developing countries. Twenty untreated septage and septage sludge samples were taken from Can Tho City, Vietnam to examine their pathogen content, and indicator micro-organisms. Escherichia coli and Enterococcus spp. were detected in all samples, regardless of sludge storage time. Phages were detected in 80% of samples. Salmonella spp. were detected in 70% of the untreated septage and 60% of septage sludge samples. Concentrations of phages and bacteria tested in septage sludge after many years of tank storage were much higher than the expected levels. Helminth ova were present in 95% of untreated septage samples with an average of 450 ova l^− 1, and were detected in all septage sludge samples with an average of 16,000 ova l^− 1. Twelve varieties of helminth ova were identified. More helminth ova varieties in higher concentrations were found in septage than those reported from stool samples. The varieties' frequency ranged from 10% to 50% and Ascaris lumbricoides predominated. Results show that pathogens and indicator micro-organisms, especially helminth ova, accumulate in sludge. Thus helminth ova should be considered when septage sludge is treated and used for agriculture. Proper health protection measures must be applied for people handling septage.     

在市场中实践在实践中学习在学习中进步--工程公司市场化进程的回顾与展望

近两年来，工程公司在提高市场竞争意识、推动市场化进程中做了大量工作，其中坚持走出去的方针是我们自我加压、推行加快市场化步伐的一个重要战略步骤。     

新时期广东城市化的新特点

新时期广东城市化出现以下特点:知识源导向、城市由单体向群体化发展、产业集群推动、政府主导自上而下的集约化发展、城镇化向城市化转变、由重“数量”发展向重“质量”发展的转变。     

2005年北京办公物业市场七大趋势

趋势一:CBD区域写字楼集中放量从各区域规划方案上看,CBD区域多数项目在03～04年处于项目的报批手续及拆阶段,预计2005年正式推向市场,因此2005年CBD区域将成为北京市场供应集中的域,区域即将供应的项目有北京财富中心(二期)、金地国际花园、万达广场、SOHO尚都、万通中心、世纪财富中心、怡禾国际中心、光华国际等。除去未知项目,2005CBD写字楼办公面积的供应量为60万平方米左右。中关村区域经过一段时间的集中供后开始逐步放缓,2005年供应的体量相对较大的项目有中关村金融中心、新中关。金街区域可能开盘的项目只有2个:英蓝国际中…     

Developments in immersed tunnelling in Holland

Holland has 22 immersed tunnels (14 road, 5 rail and 3 utilities tunnels). Another three are under construction, and more are foreseen. The tunnels are of the concrete type, i.e., constructed without a steel shell. The paper describes developments in technology and in design philosophy since the first immersed tunnel was completed 52 years ago. These developments include, amongst others: the introduction of the Gina rubber gasket between elements; the division of elements into sections divided by flexible joints; the application (if possible) of longer elements (up to 268 m); the use of precast sections for tunnels that have a small cross-section; the omission of the watertight lining (made possible by cooling the concrete of the walls during the first days after pouring); various foundation methods (e.g., sand flow instead of sand jet system; piled foundations when necessary); the use of the excavation for the open ramps (or the part of the tunnel built on land) as a casting basin for the elements; the changed approach to casting basins now that well pumping is usually forbidden; and the transport of the elements across shallow locations and across the sea. It is emphasized that the current state of immersed tunnel technology is the result of a continuous international exchange of ideas and experiences.     

新形势下高校强化基建财务管理的探讨

在市场条件下高校基建财务人员在加强日常财务管理的同时,必须树立起高度的工作责任心,抓好事前监督、事中监督、事后监督三个环节,全面理解、贯彻执行《高等学校财务制度》,管好用好各项基本建设资金,提高基建财务管理水平,更好地完成高校各项基建任务,以有限的投资,最快的建设速度,获得最大的投资效益。