Recycling Waste Electrical Socket as a Carbon Resource in Ironmaking

Ghana Mining Journal Pub Date : 2016-12-19 DOI:10.4314/GM.V16I1.9

J. R. Dankwah, J. Gordon, P. Koshy

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引用次数: 2

Abstract

Globally, millions of waste electrical sockets (WES) are generated annually. This category of waste material is difficult to recycle because they are thermosetting polymers which cannot be remoulded after setting. In this work, the reduction of medium grade Agbaja iron ore from Nigeria, by carbonaceous materials generated from WES was investigated through experiments conducted in a domestic microwave oven. Composite pellets of medium grade Agbaja iron ore (assaying ~74 % Fe 2 O 3 ) with WES were irradiated in a domestic microwave oven (Pioneer, Model PM-25 L, 2450 MHz and 1000 W). The reduced mass was characterised by XRD and SEM/EDS analyses and the extent of reduction after 40 min was determined. SEM/EDS analysis revealed a highly reduced mass with distinct peaks of elemental iron and this was corroborated by XRD analyses that confirmed the formation of metallic iron. The extent of reduction obtained after using WES as reductant was over 80%. Accordingly, carbonaceous materials generated from waste electrical sockets are effective reductants for producing metallic iron from the Agbaja iron ore. Keywords : Waste Electrical Sockets, Thermosetting Polymer, Agbaja Iron Ore; Municipal Solid Waste

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废旧插座作为炼铁碳资源的回收利用

全球每年产生数百万个废弃电源插座(WES)。这类废物很难回收，因为它们是热固性聚合物，凝固后不能重塑。在这项工作中，通过在家用微波炉中进行的实验，研究了用WES产生的碳质材料还原尼日利亚中等品位的Agbaja铁矿石。将中等品位Agbaja铁矿石(含~ 74% fe2o3)的复合球团在家用微波炉(Pioneer，型号PM-25 L, 2450 MHz, 1000 W)中进行WES辐照，用XRD和SEM/EDS对其还原质量进行了表征，并测定了40 min后的还原程度。SEM/EDS分析显示了铁元素的高度还原峰，XRD分析证实了金属铁的形成。用WES作还原剂后，还原程度达80%以上。因此，废电插座产生的碳质材料是Agbaja铁矿石生产金属铁的有效还原剂。关键词:废电插座，热固性聚合物，Agbaja铁矿石;都市固体废物

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Ghana Mining Journal

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