矿产综合利用Issue(6)：141-145,153,6.DOI:10.3969/j.issn.1000-6532.2023.06.021
两种赤泥对宁夏煤灰熔融温度的影响
Influence of Two Kinds of Red Mud on the Melting Temperature of Coal Ash in Ningxia
摘要
Abstract
This is an essay in the field of metallurgical engineering.Bayer red mud and sintered red mud were added to Ningxia coal in a certain proportion to study the influence of the two different red mud on the ash melting temperature of Ningxia coal.Factsage software was used to study the ash melting temperature change mechanism.The experimental results show that Ningxia coal ash contains a large amount of mullite,which causes the ash melting point of coal ash to be higher,and adding red mud to it can effectively reduce the melting point of coal ash.With the increase in the amount of Bayer red mud added,the composition of mullite in coal ash gradually decreases,while anorthite and albite gradually increase,reducing the melting temperature of coal ash.With the increase of sintered red mud addition,the content of mullite in coal ash gradually decreases,and the content of feldspar gradually increases.The main reason that red mud reduces the melting temperature of coal ash in Ningxia is that the alkaline oxides in the red mud react with the acidic oxides in the coal ash to form low-melting minerals and the interaction between these minerals generates low temperature.Communion.关键词
冶金工程/赤泥/灰熔融温度/宁夏/煤灰/低温共熔物Key words
Metallurgical engineering/Red mud/Ash melting temperature/Ningxia/Coal ash/Low-temperature eutectic分类
矿业与冶金引用本文复制引用
温艳..两种赤泥对宁夏煤灰熔融温度的影响[J].矿产综合利用,2023,(6):141-145,153,6.基金项目
2020年度宁夏高等学校科学研究项目:碱土金属修饰的CuFe2SO4复合载氧体煤/生物质化学链气化制氢特性研究(NGY2020154) （NGY2020154）
