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首页> 外文期刊>Journal of Materials Engineering and Performance >Manufacturing and Mechanical Characterization of Fly-Ash-Reinforced Materials for Furnace Lining Applications
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Manufacturing and Mechanical Characterization of Fly-Ash-Reinforced Materials for Furnace Lining Applications

机译：用于熔炉衬里应用的粉煤灰加固材料的制造与力学特性

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摘要

Fly ash is the major wastes generated during the combustion of coal in thermal power plants. More than 110 million tons of fly ash produced in India annually. It leads to a significant disposal problem. An attempt has been made by numerous researchers to integrate the fly ash in the industry sector. The key applications include the manufacturing of bricks, production of cement, soil amelioration, mine backfilling, etc. Nevertheless, the refractory bricks for furnace lining are mainly formed from iron and steel, which are imported and are very expensive. Hence, to tackle this issue, the current study is focused on the synthesis of fly-ash-rich brick for high-temperature applications. In this investigation, fly ash material combined with minor additives such as granite powder, alite cement, and black sand were manufactured. The pellets of these materials with a varying additive percentage from 5 to 30% were prepared using hydraulic pressure. The heat-treated pellets were physically and mechanically characterized to ensure the brick properties suitable for furnace lining applications. Surface morphology of raw materials and particle-particle interaction after palletization were evaluated using scanning electron microscopy. Energy Dispersive x-Ray Analysis and x-ray diffraction technique were conducted to detect elemental analysis and phase evaluation of raw materials and fly-ash-rich brick after heat treatment. Microhardness of the samples was determined using a Vickers hardness tester. It is found that the formation of various complex compounds with respect to constituent composition, and pellet formation temperature has a great influence on the variation in hardness.
机译：粉煤灰是火力发电厂燃煤过程中产生的主要废弃物。印度每年生产超过1.1亿吨的粉煤灰。这导致了一个重大的处置问题。许多研究人员试图将粉煤灰整合到工业领域。主要应用包括砖的制造、水泥的生产、土壤改良、矿山回填等。然而，炉衬用耐火砖主要由进口钢铁制成，价格非常昂贵。因此，为了解决这个问题，目前的研究重点是合成用于高温应用的富粉煤灰砖。在这项研究中，粉煤灰材料与少量添加剂（如花岗岩粉、阿利特水泥和黑砂）组合制成。使用液压制备了这些材料的颗粒，添加百分比从5%到30%不等。热处理球团的物理和机械特性，以确保砖的性能适合炉衬应用。使用扫描电子显微镜评估了原材料的表面形貌和码垛后的颗粒相互作用。采用能量色散x射线分析和x射线衍射技术对原材料和热处理后的富粉煤灰砖进行了元素分析和物相评价。使用维氏硬度计测定样品的显微硬度。研究发现，各种复杂化合物的形成与组成成分有关，球团形成温度对硬度变化有很大影响。

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