国内最大规格烘干中卸牛料磨的开发设计

20世纪50年代末,天津水泥工业设计研究院自主开发设计出了我国第一台磨机准1.83m×6.1m水泥磨;20世纪70年代末开发设计出用于2000t/d新型干法水泥生产线配套的准3.5m×10m烘干中卸生料磨,成功应用于几乎所有的1000t/d和很多的2000t/d新型干法水泥生产线;1993年开发设计的准4.6m×7.5m+3.5m烘干中卸生料磨在长春双阳水泥厂成功投产;1999年,又自主开发设计出了当时我国水泥工业最大的准4.6m×10m+3.5m烘干中卸生料磨,装机功率3550kW,生产能力190t/h,用于石家庄市鹿泉鼎新水泥集团2500t/d水泥生产线,安全连续运行至今。成为国内2500t/d新型干…     

优化设计降低水泥工业建设造价

回顾我国新型干法水泥３０多年发展的历史，除了水泥技术及装备制造能力外，水泥工厂的建设投资过高成为制约新型干法水泥发展的重要因素。在２０世纪８０年代，建设１条２０００t／d熟料新型干法水泥生产线，其工程投资（不含矿山、厂外工程及征地）约需４～５亿元，单位水泥吨投资约为６５０～８００元，２０世纪９０年代水泥吨投资仍较高，约在４００～５５０元。经过几年水泥工业结构调整已取得显著成绩，“十五”期间计划在５年内新增新型干法水泥生产能力６０００万t。目前，由于优化设计、技术创新、装备国产化的实施，使水泥工业建…     

滇西水泥厂机械设备的开发与运用

1 概述 滇西水泥厂1000t/d新型干法水泥生产线(1~#窑)于1989年完成初步设计。当时,我国新型干法水泥生产工艺和技术装备的开发刚刚初步完成了700t/d、 2000t/d规模的定型设计和投产验收,而1000t/d窑外分解生产工艺和装备处于开发设计阶段。我院在消化吸收国家“六五”、“七五”期间引进国外水泥生产先进技术和装备的基础上,结合滇西水泥厂高海拔的特点,本着“技术先进,生产可靠,节省投资,维修方便”的原则,开发设计了一批生产工艺设备(表1),并与兄弟单位合作,实现了全厂生产工艺设备的国产化。     

1000t/d新型干法生产线生产特种水泥的实践

0引言随着产品结构的调整,新型干法水泥生产线向大型化规模化发展的趋势明显,5000t/d、8000t/d甚至10000t/d的新型干法水泥生产线不断建成投产。而在结构调整以前建的一批700t/d、1000t/d的新型干法生产线生产普通水泥在规模效益上比不过大型的干法生产线,在价格上又受到立窑生     

水泥工业建设项目投资上涨因素分析及控制对策

近年来,水泥工业建设项目,特别是大中型新型干法水泥厂建设投资大幅度上涨,令人关注。认真分析造成投资上涨的因素,进而研究控制对策,这对于加速实现我国水泥工业“由大变强,靠新出强”的战略转变,以及提高投资效益都是有益的。 1 水泥工业建设项目投资上涨的基本因素 近十几年来大中型水泥厂建设造价剧增,与80年代初相比,目前同等规模的新型干法厂造价约上升了3～4倍。例如,1980年动工,1983年投产的冀东水泥厂,最终修正总概算为3.14亿元,建设总投资为3.96亿元(超概算26％,吨熟料投资较过去采用进口设备的生产线增加了1倍多)。而10年后建成投产的、同等规模的大连华能——小野田4000t/d生产线,建设总投资则达10.5亿元,较之冀东厂增加了约1.7倍。如今新建一条4000t/d新型干法熟料生产线则需16～18亿元。     

新型干法水泥生产线电气设备维护浅述

新型干法水泥技术对工艺生产的连续性有较高要求，电气设备运行的好与坏直接关系到生产工艺系统的连续性，降低电气设备故障率是保证水泥生产线连续运行的有力保障。下面就结合我厂3000t/d和6000t/d新型干法水泥生产线的电气设备维护经历进行简要介绍。     

从窑操曲线谈窑操工作效果

“十五”期间．河南省新型干法水泥有了快速的发展．截止到2005年底全省已建成1000t／d生产线20条．2500～3000t/d生产线7条。5000t/d生产线6条，余热发电窑12条．水泥生产能力达到3200万t，新型干法水泥的比重超过50％。2005年底和2006年初开工建设的5000t／d生产线11条．3000t/d生产线3条，预计这些生产线2006年底多数可以建成投产．全省新型干法水泥产能将达到6000万t，结构调整工作取得显著效果。     

华北地区水泥业态势与发展策略建议(节选)

新千年伊始,中国水泥行业迎来了史无前例的发展机遇,以东部沿海地区为先导,一批批新型干法水泥生产线相继建成投产。据建材工业统计报表显示,至2002年底,全国已建成投产的日产1000t以上规模的干法水泥生产线达222条,水泥产能接近全国总产能的20%。为追求规模经济效益,各类较具实力的(水泥)企业在谋划兴建水泥项目时已将单线产能大幅提升,从以往的2000～4000t/d,提高到5000t/d以上,大大加快了水泥工业结构调整的步伐。有关统计资料表明,目前全国处于在建、设计阶段的大型新型干法水泥项目近170个,预计这些项目将在2005年底前陆续投产。到“十…     

透视国际水泥工业高新技术发展内涵探讨工程研究领域跨世纪攻关方向与对策（

3 我国新型干法水泥生产及工程技术研究领域发展现状及差距 我国自1976年第一台预分解窑投产以来,迅速制订了发展以新型干法水泥生产为主导的水泥工业发展战略和一系列方针政策。80年代,我国从国外成套引进的冀东、宁国、柳州、珠江等4000t/d及3200t/d级以及我国自行设计、制造、建设的江西2000t/d级等大型预分解窑生产线建成投产,标志着我国技术人员已经熟练地掌握了新型干法水泥生产技术。90年代,中外合资山东泗     

河南省新型干法水泥迅速发展及遇到的问题

10年回顾 河南新型干法水泥的发展应自80年代中期开始,当时河南省在郑州市密县和驻马店市确山县两地分别建成了两条700t/d生产线,拉开了河南省新型干法水泥发展和建设的序幕.80年代末在新乡平原水泥厂建成了全国第一条1000t/d生产线,该生产线采用国内设计并制造的原料立磨,采用配有辊压机的水泥磨,当属国内最先进的新型干法生产线.此后,省内又分别在焦作、洛阳建成1000t/d生产线,七里岗再建1000t/d二线.     

Insect antifeedant properties of anthranoids from the genusVismia

Vismiones and ferruginins, representatives of a new class of lypophilic anthranoids from the genusVismia were found to inhibit feeding in larvae of species ofSpodoptera, Heliothis, and inLocusta migratoria.     

Direct observation of freeze-thaw instability of latex coatings via high pressure freezing and cryogenic SEM

Despite its industrial importance, the subject of freeze-thaw (F/T) stability of latex coatings has not been studied extensively. There is also a lack of fundamental understanding about the process and the mechanisms through which a coating becomes destabilized. High pressure (2100 bar) freezing fixes the state of water-suspended particles of polymer binder and inorganic pigments without the growth of ice crystals during freezing that produce artifacts in direct imaging scanning electron microscopy (SEM) of fracture surfaces of frozen coatings. We show that by incorporating copolymerizable functional monomers, it is possible to achieve F/T stability in polymer latexes and in low-VOC paints, as judged by the microstructures revealed by the cryogenic SEM technique. Particle coalescence as well as pigment segregation in F/T unstable systems are visualized. In order to achieve F/T stability in paints, latex particles must not flocculate and should provide protection to inorganic pigment and extender particles. Because of the unique capabilities of the cryogenic SEM, we are able to separate the effects of freezing and thawing, and study the influence of the rate of freezing and thawing on F/T stability. Destabilization can be caused by either freezing or thawing. A slow freezing process is more detrimental to F/T stability than a fast freezing process; the latter actually preserves suspension stability during freezing. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004 in Chicago, IL. Tied for first place in The John A. Gordon Best Paper Competition.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Bark and Ambrosia Beetles in the Southeastern US

In 2002–2004, we examined the flight responses of 49 species of native and exotic bark and ambrosia beetles (Coleoptera: Scolytidae and Platypodidae) to traps baited with ethanol and/or (−)-α-pinene in the southeastern US. Eight field trials were conducted in mature pine stands in Alabama, Florida, Georgia, North Carolina, and South Carolina. Funnel traps baited with ethanol lures (release rate, about 0.6 g/day at 25–28°C) were attractive to ten species of ambrosia beetles (Ambrosiodmus tachygraphus, Anisandrus sayi, Dryoxylon onoharaensum, Monarthrum mali, Xyleborinus saxesenii, Xyleborus affinis, Xyleborus ferrugineus, Xylosandrus compactus, Xylosandrus crassiusculus, and Xylosandrus germanus) and two species of bark beetles (Cryptocarenus heveae and Hypothenemus sp.). Traps baited with (−)-α-pinene lures (release rate, 2–6 g/day at 25–28°C) were attractive to five bark beetle species (Dendroctonus terebrans, Hylastes porculus, Hylastes salebrosus, Hylastes tenuis, and Ips grandicollis) and one platypodid ambrosia beetle species (Myoplatypus flavicornis). Ethanol enhanced responses of some species (Xyleborus pubescens, H. porculus, H. salebrosus, H. tenuis, and Pityophthorus cariniceps) to traps baited with (−)-α-pinene in some locations. (−)-α-Pinene interrupted the response of some ambrosia beetle species to traps baited with ethanol, but only the response of D. onoharaensum was interrupted consistently at most locations. Of 23 species of ambrosia beetles captured in our field trials, nine were exotic and accounted for 70–97% of total catches of ambrosia beetles. Our results provide support for the continued use of separate traps baited with ethanol alone and ethanol with (−)-α-pinene to detect and monitor common bark and ambrosia beetles from the southeastern region of the US.     

Methyl 2,4,6-decatrienoates Attract Stink Bugs and Tachinid Parasitoids

Halyomorpha halys (Stål) (Pentatomidae), called the brown marmorated stink bug (BMSB), is a newly invasive species in the eastern USA that is rapidly spreading from the original point of establishment in Allentown, PA. In its native range, the BMSB is reportedly attracted to methyl (E,E,Z)-2,4,6-decatrienoate, the male-produced pheromone of another pentatomid common in eastern Asia, Plautia stali Scott. In North America, Thyanta spp. are the only pentatomids known to produce methyl 2,4,6-decatrienoate [the (E,Z,Z)-isomer] as part of their pheromones. Methyl 2,4,6-decatrienoates were field-tested in Maryland to monitor the spread of the BMSB and to explore the possibility that Thyanta spp. are an alternate host for parasitic tachinid flies that use stink bug pheromones as host-finding kairomones. Here we report the first captures of adult and nymph BMSBs in traps baited with methyl (E,E,Z)-2,4,6-decatrienoate in central Maryland and present data verifying that the tachinid, Euclytia flava (Townsend), exploits methyl (E,Z,Z)-2,4,6-decatrienoate as a kairomone. We also report the unexpected finding that various isomers of methyl 2,4,6-decatrienoate attract Acrosternum hilare (Say), although this bug apparently does not produce methyl decatrienoates. Other stink bugs and tachinids native to North America were also attracted to methyl 2,4,6-decatrienoates. These data indicate there are Heteroptera in North America in addition to Thyanta spp. that probably use methyl 2,4,6-decatrienoates as pheromones. The evidence that some pentatomids exploit the pheromones of other true bugs as kairomones to find food or to congregate as a passive defense against tachinid parasitism is discussed.     

2007～2008年世界塑料工业进展

收集了2007年7月～2008年6月世界塑料工业的相关资料,介绍了2007～2008年国外塑料工业的发展情况,提供了世界塑料产量、消费量及全球各类树脂的需求量及产能情况.按通用热塑性树脂(聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂)、工程塑料(尼龙、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚)、特种工程塑料(聚苯·硫醚、液晶聚合物、聚醚醚酮)、通用热固性树脂(酚醛、聚氨酯、不饱和聚酯树脂、环氧树脂)不同品种的顺序,对树脂的产量、消费量、供需状况及合成工艺、产品应用开发、树脂品种的延伸及应用的进一步扩展等技术作了详细介绍.     

2005～2006年国外塑料工业进展

收集了2005年7月～2006年6月国外塑料工业的相关资料,介绍了2005—2006年国外塑料工业的发展情况。提供了世界塑料产量、消费量及全球各类树脂生产量以及各国塑料制品的进出口情况。作为对比,介绍了中国塑料的生产情况。按通用热塑性树脂（聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂）、工程塑料（聚酰胺、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚）、通用热固性树脂（酚醛、聚氨酯、不饱和树脂、环氧树脂）、特种工程塑料（聚苯硫醚、液晶聚合物、聚醚醚酮）的品种顺序,对树脂的产量、消费量、供需状况及合成工艺、产品开发、树脂品种的延伸及应用的扩展作了详细的介绍。