锆硅渣回收利用进展

锆硅渣产量大、具有放射性,对环境造污染严重。从回收锆元素、中和处理、制备白炭黑、无机高分子絮凝剂、层状结晶二硅酸钠、五水偏硅酸钠及合成硬硅钙石绝热保温材料等方面介绍锆硅渣的回收利用方法,重点介绍锆硅渣制备白炭黑的方法。探讨了锆硅渣今后的综合利用趋势。     

锆渣的微观特性及应用研究进展

氧氯化锆是一种重要的基础锆化合物产品,可作为多种锆化合物及金属锆产品的生产原料,对整个行业的发展非常重要,但其生产过程中产生大量的废渣-锆渣,虽然近年来关于锆渣的综合利用技术有了相关的研究,但应用效果仍离国家和社会要求有很大的距离.充分利用锆渣中的非晶态二氧化硅,开展清洁生产是行业发展趋势和企业的最终选择.     

锡废料综合利用的研究进展

锡废料是锡金属及其化合物在生产和使用中产生的废弃物,是一种亟待利用的宝贵资源.作者叙述了锡废料来源以及从各种废弃的含锡资源中回收利用锡的方法.目前锡废料的综合利用采用火法挥化、湿法碱熔酸浸及尾矿再选方法进行处理.这些方法均可有效回收或富集锡废料中的锡.     

节能司召开战略性稀贵金属材料废料回收利用工作座谈会

<正>为提高战略性稀贵金属材料废料资源利用效率,加强战略性稀贵金属材料废料保密管理,2014年4月11日,工业和信息化部节能与综合利用司组织召开了战略性稀贵金属材料废料回收利用工作座谈会,周长益司长主持了此次会议。来自总装备部、国家保密局、国防科工局、中国有色金属工业协会、各军工集团相关负责同志参加了此次会议。会上,介绍了开展稀贵金属废料回收利用试点工作的基本思路及有关背景情况,中国航空工业集团介绍了稀     

电石渣生产水泥熟料的工艺

电石渣是乙炔法生产聚氯乙烯产生的废渣，利用电石渣生产水泥熟料是电石渣综合利用中用量最大、最彻底、技术最成熟的方法。实现资源综合利用工艺方案发展循环经济。分析了国内各种利用电石渣生产水泥熟料工艺的特点，认为选择新型干法预烘干干磨干烧工艺是最具发展前途的工艺。     

专利信息

１９９８年尾矿废渣综合利用专利信息在对１９９８年全年发明专利公报有关尾矿废渣综合利用专利调查的基础上选出若干与低品位矿及尾矿利用和化工生产废料利用等有关的专利信息进行介绍。其目的在于引起化工行业，特别是化工矿物加工行业对各种废料，尤其是化工生产废料及其他工业废料在化工中利用的重视。在每项专利介绍中，为节省篇幅，仅给出专利名称、专利号以及摘要，如读者想进一步了解某项专利的细节，可按专利号直接从国家专利局文献馆索取该项专利说明书的复制件。废料不“废”，变废为宝，废料从某种角度上看也是一种资源，即所谓…     

含钛高炉渣的利用现状与展望

由于含钛高炉渣的排放造成了大量钛资源的流失,对它的利用已成为人们关注的焦点。本文介绍了含钛高炉渣的综合利用研究现状,并分析了存在的问题以及高炉渣在光催化领域应用的可行性,对其研究前景进行了展望。     

隧道洞渣在建筑材料中的资源化综合利用研究进展

隧道洞渣是一种宝贵资源,因地制宜利用隧道洞渣可解决建筑材料资源短缺与洞渣处理困难的矛盾.本文从隧道洞渣的特点入手,重点介绍了隧道洞渣的分类方法、快速评价技术和资源化综合利用现状等三个方面,同时对隧道洞渣的主要发展趋势进行了展望.     

聚丙烯腈废料的综合利用

随着腈纶工业的迅速发展，必将产生大量聚丙烯腈废料。回收和利用这些废料是摆在人们面前的一个迫切而又重要的课题。本文介绍了聚丙烯腈废料的化学处理方法并指出其综合利用的广阔前景。     

黄金冶炼尾渣综合利用研究进展

中国黄金冶炼企业每年会产生大量尾渣,尾渣中含金量在0.5 g/t以上,还有部分铜、铅、锌等有价元素。由于技术或经济效益等原因,大部分企业只能将尾渣堆存处理,中国黄金冶炼尾渣综合利用率较低。这样不仅造成资源浪费,还会对环境造成危害。通过对黄金冶炼废渣的综合利用现状进行分析,研究分析了现行的几种尾渣综合利用的方法,为冶炼废渣的利用提供重要参考,以期实现黄金冶炼尾渣变废为宝,清洁利用。     

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。