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首页> 外文期刊>Environmental Science & Technology >Binding Waste Anthracite Fines with Si-Containing Materials as an Alternative Fuel for Foundry Cupola Furnaces
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Binding Waste Anthracite Fines with Si-Containing Materials as an Alternative Fuel for Foundry Cupola Furnaces

机译：将废无烟煤细粉与含硅材料结合起来作为铸造冲天炉的替代燃料

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摘要

An alternative fuel to replace foundry coke in cupolas was developed from waste anthracite fines. Waste anthracite fines were briquetted with Si-containing materials and treated in carbothermal (combination of heat and carbon) conditions that simulated the cupola preheat zone to form silicon carbide nanowires (SCNWs). SCNWs can provide hot crushing strengths, which are important in cupola operations. Lab-scale experiments confirmed that the redox level of the Si-source significantly affected the formation of SiC. With zerova-lent silicon, SCNWs were formed within the anthracite pellets. Although amorphous Si (+4) plus anthracite formed SiC, these conditions did not transform the SiC into nanowires. Moreover, under the test conditions, SiC was not formed between crystallized Si (+4) and anthracite. In a full-scale demonstration, bricks made from anthracite fines and zerovalent silicon successfully replaced a part of the foundry coke in a full-scale cupola. In addition to saving in fuel cost, replacing coke by waste anthracite fines can reduce energy consumption and CO_2 and other pollution associated with conventional coking.
机译：从废无烟煤细料中开发了一种替代燃料来代替冲天炉中的铸造焦炭。废无烟煤细粉与含硅材料团块在一起，并在碳热（热和碳的结合）条件下进行处理，该条件模拟冲天炉的预热区以形成碳化硅纳米线（SCNW）。 SCNW可提供热破碎强度，这在冲天炉操作中很重要。实验室规模的实验证实，硅源的氧化还原水平显着影响了SiC的形成。用零价硅，在无烟煤颗粒中形成了SCNW。尽管非晶硅（+4）和无烟煤形成了SiC，但这些条件并未将SiC转变为纳米线。此外，在测试条件下，结晶的Si（+4）与无烟煤之间未形成SiC。在一次全面的演示中，用无烟煤细粉和零价硅制成的砖块在一次完整的冲天炉中成功地替代了部分铸造焦炭。除了节省燃料成本外，用无烟煤废料代替焦炭还可以减少能源消耗，CO_2和其他与常规焦化有关的污染。

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  • 来源
    《Environmental Science & Technology》 |2011年第7期|p.3062-3068|共7页
  • 作者

    He Huang; John T. Fox; Fred S. Cannon; Sridhar Komarneni; Joseph Kulik; Jim Furness;

  • 作者单位

    Department of Civil and Environment Engineering The Pennsylvania State University, University Park, Pennsylvania 16802, United States;

    Department of Civil and Environment Engineering The Pennsylvania State University, University Park, Pennsylvania 16802, United States;

    Department of Civil and Environment Engineering The Pennsylvania State University, University Park, Pennsylvania 16802, United States;

    Materials Research Institute and Department of Crop and Soil Sciences, The Pennsylvania State University, University Park, Pennsylvania 16802, United States;

    Materials Research Institute and Department of Crop and Soil Sciences, The Pennsylvania State University, University Park, Pennsylvania 16802, United States;

    Furness-Newburge Inc., Versailles, Kentucky 40383, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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