...
首页> 外文期刊>International Journal of Scientific & Technology Research >Recycling Waste Bakelite As A Carbon Resource In Ironmaking
【24h】

Recycling Waste Bakelite As A Carbon Resource In Ironmaking

机译:回收废胶木作为炼铁中的碳资源

获取原文
           

摘要

Abstract: Bakelite is a 3-dimensional cross-linked network structured thermosetting polymer which is difficult to recycle after use. However, it contains high levels of carbon and CaCO3 that can be recovered for use as reductant and fluxing agent in ironmaking. In this work we report the use of post-consumer bakelite as reductant for the production of metallic iron from iron oxide in a horizontal tube furnace through the composite pellet approach.Gas emission studies were conducted by pyrolysing raw bakelite at different temperatures within the temperature range 1200-1600 'C in a horizontal tube furnace. Following this,composite pellets were then formed from mixtures of iron oxide and post-consumer bakelite.The iron oxide-bakelite composites were heated from room temperature to 1200 'C and then between 1200-1600 'C in a continuous stream of pure argon and the off gas was analysed continuously using an infrared (IR) gas analyser. Elemental analyses of samples of the reduced metal were performed chemically for its oxygen content using a LECO oxygenitrogen analyser. The extent of reduction after ten minutes was determined from the oxygen content. Gas emission studies revealed the emission of large volumes of the reductant gases CO and CH4along with CO2.It is further demonstrated that post-consumer bakelite is effective at reducing iron oxide to produce metallic iron.
机译:摘要:电木是一种三维交联网络结构的热固性聚合物,使用后难以回收。但是,它含有高含量的碳和CaCO3,可以回收用作炼铁的还原剂和助熔剂。在这项工作中,我们报告了使用消费后的电木作为还原剂,通过复合球团法在卧式管式炉中从氧化铁生产金属铁的方法。 1200-1600'C在卧式管式炉中。然后,由氧化铁和消费后的胶木混合物制成复合颗粒。将氧化铁-胶木复合材料从室温加热到1200'C,然后在连续的纯氩气和氩气中加热到1200-1600'C。使用红外(IR)气体分析仪连续分析废气。使用LECO氧气/氮气分析仪化学分析了还原金属样品中的氧含量。由氧含量确定十分钟后的还原程度。气体排放研究表明,大量的还原性气体CO和CH4随CO2一起排放。进一步证明,消费后的胶木可有效还原氧化铁以生产金属铁。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号