煤矸石部分替代泥岩配料生产水泥熟料的实践

介绍了用煤矸石替代部分泥岩在带余热发电回转窑上煅烧水泥熟料的应用情况,及其煅烧过程出现的问题和采取的应对措施。结果表明,用煤矸石替代50%泥岩配料时,可以煅烧出优质水泥熟料;煤矸石含有一定热量,煅烧熟料时得到利用,从而降低了熟料煤耗3~4kg/t,提高余热发电量1kWh/t,实现了节能降本减排的效果。     

钢渣配料对水泥中铬（Ⅵ）的影响

通过试验室试验和实际生产数据研究分析了钢渣对水泥生产中水溶性铬（Ⅵ）的影响,结果表明,钢渣应用于生料配料时熟料中铬（Ⅵ）会明显升高,这是由于钢渣中含有三价铬或六价铬,在生料煅烧过程中会被氧化成为六价铬并且固溶在水泥熟料中;钢渣应用于水泥配料中可以降低水泥中铬（Ⅵ）含量,掺加10%时可以降低水泥中铬（Ⅵ）2.30 mg/kg左右。     

钢渣配料在预分解窑上生产高标号熟料

<正>在预分解窑上利用钢渣配料,还存在许多工艺问题。我公司通过一年的试验摸索,采取改进措施,调整配料方案,改进煅烧操作方法,解决了预热器系统结皮堵塞、窑内结圈、长厚窑皮等工艺故障,熟料标准煤耗下降,产质量提高,延长了窑内耐火材料使用寿命,收到较好的效果,现将情况简单介绍如下。1钢渣的性能钢渣是炼钢过程中,为除去铁中的硫、磷等有害元素,加入     

利用冶金工业固体废物生产低碱水泥的实践

采用经过高温煅烧的冶金工业固体废物转炉钢渣、粒化高炉矿渣和石灰石、硅石选矿废渣四组分配料,确定合理的熟料三率值,制定相应的煅烧操作制度,解决转炉钢渣配料对烧成系统的影响问题,在新型干法回转窑上生产出碱含量小于0.40%的普通硅酸盐水泥熟料;采用工业副产品脱硫石膏作水泥缓凝剂,同时加入12%的高炉粒化矿渣调整水泥性能,生产出碱含量小于0.45%的普通低碱水泥。     

淤沙替代粉砂岩配料煅烧熟料的实践

汉江淤沙配料比砂岩配料生产的熟料fCaO含量高,易烧性差;汉江淤沙配料,水泥的初凝时间及终凝时间延长,各龄期强度降低;适当提高熟料的KH和SM,熟料中fCaO的含量增大,水泥的凝结时间缩短,各龄期强度提高;适当提高熟料煅烧温度,熟料致密度增加,熟料中fCaO的含量显著降低,水泥的凝结时间明显缩短,各龄期抗压强度显著提高。利用淤沙配料,吨熟料淤沙的用量在0.2 t以上,可以几乎不用粉煤灰等铝质校正材料,三组分配料即可。生产上适当提高配料的饱和比及硅率,适当提高熟料的煅烧温度,同样可生产出质量优良的熟料。但淤沙配料,熟料中的碱含量有一定提高,难以用于生产低碱水泥。     

利用煤球灰代替粘土生产水泥熟料的研究

煤球灰是合成氨厂排放的废渣,以它代替粘土配料生产标号325号以上水泥,对处理大量废渣,变废为宝,减少环境污染,少占耕地;降低水泥熟料煤耗和部份石灰石耗,降低水泥成本等,具有重要意义。当决定以煤球灰配料烧制水泥熟料的配方时,在KH=0.86～0.88,n=1.8～2.5,P=0.9～1.3范围内,以提高出磨,入窑生科CaCO_3合格率,稳定热工制度,提高熟料强度为目的。采用煤球灰配科的生料,易烧性良好,具有上火快、冷却快的特点,宜用浅暗火和大风、大料的强化煅烧,烧成的熟料强度高。以煤球灰代替粘土配料,便于生产控制,利于生熟料质量的稳定和提高;并可节约石灰石,降低煤耗。通过实际使用在我厂的基建工程项目,均能达到设计要求。     

熟料生产各环节对钢渣中铬离子的转换率研究

通过对熟料烧成各个环节与钢渣引入的铬离子转化率的分析,表明熟料中的碱含量、窑尾CO浓度、硫碱比的改变可以有效改变钢渣中的铬离子的转化率,企业通过降低原料中的碱含量、提高窑尾的CO浓度、提高硫碱比等措施,在加入钢渣的情况下,使钢渣中的总铬转化为水溶性铬（Ⅵ）的比例达到最低,最终在生料配料中加入1.5%~3.0%的钢渣,有效降低了生产成本。     

水泥生料掺加晶种煅烧的研究

研究了水泥生产中生料掺加晶种煅烧对熟料游离氧化钙、强度及煤耗的影响。对试验数据进行了化学分析、物理检验和岩相分析。结果表明，晶种最佳掺量为物料总量的４％时，可使熟料强度提高约７．０ＭＰａ，煤耗降低５％～８％。     

水泥“和料掺加晶种煅烧的研究

研究了水泥生产中生料掺加晶种煅烧对熟料游离氧化钙、强度及煤耗的影响。对试验数据进行了化学分析、物理检验和岩相分析。结果表明，晶种最佳掺量为物料总量的４％时，可使熟料强度提高约７．０ＭＰａ，煤耗降低５％￣８％。     

优化配料方案降低熟料成本

利用铁质校正原料红铁粉代替绿铁粉、钢渣配料，进行生料粉磨、熟料煅烧试验。结果表明，使用红铁粉配料后可以提高生料的三率值合格率，提高磨机台时产量，降低单位生料成本，改善窑工况，提高熟料28 d强度。     

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.     

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.     

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。     

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.     

Inorganic/organic nanocomposite coatings: The next step in coating performance

Inorganic/organic hybrid materials have considerable promise and are beginning to become a major area of research for many coating usages, including abrasion and corrosion resistance. Our primary approach is to prepare the inorganic phase in situ within the film formation process of the organic phase. The inorganic phase is introduced via sol-gel chemistry into a thermosetting organic phase. By this method, the size, periodicity, spatial positioning, and density of the inorganic phase can be controlled. An important aspect of the inorganic/organic hybrid materials is the coupling agent. The initial task of the coupling agent is to provide uniform mixing of the oligomeric organic phase with the sol-gel precursors, which are otherwise immiscible. UV-curable inorganic/organic hybrid systems have the advantages of a rapid cure and the ability to be used on heat sensitive substrates such as molded plastics. Also, it is possible to have better control of the growth of the inorganic phase using UV curing. It is our ultimate goal to completely separate the curing of inorganic and organic phases to gain complete control over the morphology, and hence optimization of “all” the coating properties. Thus far, it has been found that concomitant UV curing of the inorganic and organic phases using titanium sol-gel precursors afforded nanocomposite coatings which completely block the substrate from UV light while maintaining a transparent to visible light. Also, it has been found that the morphology of the inorganic phase is highly dependent on the concentration and reactivity of the coupling agent. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004, in Chicago, IL.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Some Large Wood-Boring Beetles in Southeastern USA

Ethanol and α-pinene were tested as attractants for large wood-boring pine beetles in Alabama, Florida, Georgia, North Carolina, and South Carolina in 2002–2004. Multiple-funnel traps baited with (−)-α-pinene (released at about 2 g/d at 25–28°C) were attractive to the following Cerambycidae: Acanthocinus nodosus, A. obsoletus, Arhopalus rusticus nubilus, Asemum striatum, Monochamus titillator, Prionus pocularis, Xylotrechus integer, and X. sagittatus sagittatus. Buprestis lineata (Buprestidae), Alaus myops (Elateridae), and Hylobius pales and Pachylobius picivorus (Curculionidae) were also attracted to traps baited with (−)-α-pinene. In many locations, ethanol synergized attraction of the cerambycids Acanthocinus nodosus, A. obsoletus, Arhopalus r. nubilus, Monochamus titillator, and Xylotrechus s. sagittatus (but not Asemum striatum, Prionus pocularis, or Xylotrechus integer) to traps baited with (−)-α-pinene. Similarly, attraction of Alaus myops, Hylobius pales, and Pachylobius picivorus (but not Buprestis lineata) to traps baited with (−)-α-pinene was synergized by ethanol. These results provide support for the use of traps baited with ethanol and (−)-α-pinene to detect and monitor common large wood-boring beetles from the southeastern region of the USA at ports-of-entry in other countries, as well as forested areas in the USA.