共查询到20条相似文献,搜索用时 93 毫秒
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[本刊讯 ] 由首钢矿业公司、北京科技大学联合开发的“重油乳化及再辐射聚焦点火技术” ,使烧结矿生产的重油消耗降低了 5 4 % ,日前 ,通过了业内专家的鉴定。采用重油点火的矿业公司烧结厂 ,投产以来 ,由于点火时的雾化效果不好 ,重油消耗一直居高不下 ,为此 ,首钢矿业公司与北京科技大学等单位联合开发实施了“重油乳化及再辐射聚焦点火技术”。首先实施了“重油在线磁乳化技术”。将按适当配比混合的水和重油 ,从有一定强度的磁场中通过 ,使液流得到乳化 ,大大提高了重油的雾化效果和燃烧效率。在此基础上 ,又进一步开发了曲面再辐射聚… 相似文献
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膨化重油是用6份重油、4份水加入1‰的重油膨化剂,在一定的温度条件下,在膨化反应釜中经搅拌、循环一定时间后,完成膨化反应,形成膨化重油,油水溶合无可视水,外观较重油更明亮.工业炉窑燃用膨化重油技术试验,由乌海市洪海新能源有限公司和兰州钢铁集团公司合作进行.洪海公司提供膨化重油技术即重油膨化剂、膨化专用设备和重油膨化工艺,在兰钢公司重油库制作膨化重油,在兰钢650轧钢加热炉、热带加热炉上进行膨化重 相似文献
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1 前言 我国中型轧钢加热炉目前基本上是以燃烧重油为主。随着重油深加工技术的发展和对重油需求量的不断增加,重油供需矛盾日益突出。随之而来的是大量低质、劣质重油充斥市场。加热炉正常生产受到威胁。我厂曾因重油质量低劣造成加热炉停产达12天,经济损失十分严重。 基于上述情况,以单纯的重油为燃料是难以满足生产需要的,根据我厂的实际情况,能取代重油的有:奥里油、煤气和焦油。奥 相似文献
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首钢矿业烧结厂建厂以来 ,在烧结生产中 ,一直使用重油点火。由于重油短缺 ,市场价格猛涨 ,增加了烧结矿成本。为了降低成本 ,增加效益 ,该厂采取厂校挂钩的办法 ,进行了多方面的探索 ,他们开发的“重油乳化及再辐射聚焦点火技术” ,尽管使烧结矿生产的重油消耗降低了 5 4 % ,但重油消耗在烧结矿制造成本中的比重依然很大。水煤浆是一种新型的煤基流体燃料。象重油一样 ,水煤浆可以泵送、雾化和贮存 ,具有着火稳定、燃烧效率高等优点。在首钢矿业公司有关单位协同对水煤浆进行了深入考察和性能、价格分析的基础上 ,请北京科技大学作为技术指… 相似文献
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针对当前轧钢加热炉重油质量差,含水量过高,影响轧钢生产这一问题,在轧钢加热炉上应用重油节能素及重油乳化设备,介绍了应用情况及使用效果,为冶金行业轧钢加热炉使用重油乳化技术节能降耗提供经验及方法。 相似文献
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我国中厚板材料发展现状及迈入21世纪对策 总被引:1,自引:1,他引:0
介绍了中厚板材料在国民经济中的作用和地位,我国的生产现状以及同国外工业发达国家在规模、设备、品种结构、产品和质量等方面的差距.对2010年时我国中厚板材料的需求作了比较科学的预测,阐述了中厚板生产行业在我国由钢铁大国迈入的铁强国所负的重任.还提出了中厚板材料要立足国内,提高轧机技术装备水平,降低板坯中有害元素含量,提高产品质量和促进高新技术的研究开发,以及制定近、远期的发展规划、中厚板深加工等,阐明我国中厚板材料迈入21世纪的对策. 相似文献
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减少厚板坯表面横裂纹的研究 总被引:3,自引:0,他引:3
铸坯表面横向裂纹是连铸坯较严重的缺陷,其对铸坯的生产和质量危害很大.主要分析了鞍钢集团新轧钢公司第一炼钢厂厚板坯表面横裂纹产生的原因,同时针对各种原因,制定相应的预防措施,以减少表面横裂纹的发生. 相似文献
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This randomized controlled trial evaluated the efficacy of a brief intervention designed to reduce the harmful consequences of heavy drinking among high-risk college students. Students screened for risk while in their senior year of high school (188 women and 160 men) were randomly assigned to receive an individualized motivational brief intervention in their freshman year of college or to a no-treatment control condition. A normative group selected from the entire screening pool provided a natural history comparison. Follow-up assessments over a 2-year period showed significant reductions in both drinking rates and harmful consequences, favoring students receiving the intervention. Although high-risk students continued to experience more alcohol problems than the natural history comparison group over the 2-year period, most showed a decline in problems over time, suggesting a developmental maturational effect. 相似文献
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BACKGROUND: Carbohydrate-Deficient Transferrin (CDT) is a new marker for excessive alcohol drinking. It appears to be useful to detect alcoholism, harmful consumption and relapse. It have been introduced in our country recently. METHOD: Recent studies about utility of CDT have been reviewed. RESULTS: Sensitivity and specificity of CDT level as a marker of alcoholism were 72-97% and 31-81% respectively. As a marker of harmful consumption its sensitivity was 15-69% and its sensitivity was higher than 82%. CDT was demonstrated to be a effective maker for evaluating alcoholic abstinence in alcoholic patients. CONCLUSIONS: CDT determinations have a high specificity for screening heavy drinking in different settings. Problems related to its sensitivity are discussed. 相似文献
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电炉炼钢烟尘(电炉烟尘)是一种颗粒极细且含有某些有毒有害、限制排放的重金属的固体废弃物,采取堆放、填埋等方法处理,不仅对环境造成污染,也是金属资源的浪费.本文针对韶钢电炉烟尘中铅、锌等金属含量较高的特点,综合分析了从电炉烟尘中提取有价金属的可行性. 相似文献
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Marlatt G. Alan; Baer John S.; Kivlahan Daniel R.; Dimeff Linda A.; Larimer Mary E.; Quigley Lori A.; Somers Julian M.; Williams Ellen 《Canadian Metallurgical Quarterly》1998,66(4):604
This randomized controlled trial evaluated the efficacy of a brief intervention designed to reduce the harmful consequences of heavy drinking among high-risk college students. Students screened for risk while in their senior year of high school (188 women and 160 men) were randomly assigned to receive an individualized motivational brief intervention in their freshman year of college or to a no-treatment control condition. A normative group selected from the entire screening pool provided a natural history comparison. Follow-up assessments over a 2-year period showed significant reductions in both drinking rates and harmful consequences, favoring students receiving the intervention. Although high-risk students continued to experience more alcohol problems than the natural history comparison group over the 2-year period, most showed a decline in problems over time, suggesting a developmental maturational effect. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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不锈钢除尘灰因含有大量重金属离子而对环境产生危害,属危险含铬废物,同时因含有大量镍、铬、铁等元素具有回收价值,对不锈钢除尘灰进行无害化处理及综合利用具有社会效益和经济效益。本文主要介绍了矿热炉再生利用不锈钢除尘灰的相关工艺及工艺的应用情况,为国内不锈钢除尘灰的回收处理提供思路,从而更好的促进我国不锈钢除尘灰回收技术的发展。 相似文献