不同锰源和铝源对合成锰铝尖晶石的影响

doi:10.3969/j.issn.1001-1935.2023.03.006

耐火材料 ›› 2023, Vol. 57 ›› Issue (3): 210-214.DOI: 10.3969/j.issn.1001-1935.2023.03.006

不同锰源和铝源对合成锰铝尖晶石的影响

商剑钊¹⁾, 刘宝亮²⁾, 徐腾腾¹⁾, 刘洋¹⁾, 石凯¹⁾

1)河南工业大学材料科学与工程学院河南郑州 450001
2)河南省工业学校河南郑州 450011

收稿日期:2022-07-21 出版日期:2023-06-15 发布日期:2023-06-21
通讯作者: 石凯,男,1964年生,博士,教授级高级工程师。E-mail:kai_shi@haut.edu.cn
作者简介:商剑钊:男,1998年生,硕士研究生。E-mail:1554769225@qq.com
基金资助:
河南省科技厅科技研发专项(212102210579)。

Effect of different manganese sources and aluminum sources on synthesis of manganese aluminate spinel

Shang Jianzhao, Liu Baoliang, Xu Tengteng, Liu Yang, Shi Kai

First author’s address: School of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, Henan, China

Received:2022-07-21 Online:2023-06-15 Published:2023-06-21

摘要/Abstract

摘要： 水泥窑烧成带用方镁石-锰铝尖晶石砖制备的关键是锰铝尖晶石的合成,分别以MnO、MnO₂、MnCO₃为锰源,α-Al₂O₃、Al(OH)₃为铝源,按照理论组成配料,经混合、成型、干燥后,在1 550、1 600 ℃保温3 h合成了锰铝尖晶石,研究了不同锰源和铝源对合成锰铝尖晶石性能的影响。结果表明:1)相比MnO₂和 MnCO₃,以MnO为锰源合成锰铝尖晶石的合成率较高,显气孔率较低,体积密度较高,晶粒尺寸更大,达到 50 μm,结构致密。2)相比Al(OH)₃,以α-Al₂O₃为铝源合成的锰铝尖晶石裂纹更少,显气孔率更低,结构更致密。因此,以α-Al₂O₃为铝源,以MnO为锰源,经1 600 ℃烧结合成了纯度较高、晶体发育良好的致密锰铝尖晶石。

关键词: 锰铝尖晶石, 锰源, 铝源, MnO, α-Al₂O₃

Abstract: The preparation key of periclase-manganese aluminate spinel bricks for the cement kiln firing zone is the synthesis of manganese aluminate spinel.Manganese aluminate spinel (MnAl₂O₄) was synthesized at 1 550 and 1 600 ℃ for 3 h,using MnO,MnO₂ and MnCO₃ as manganese sources and α-Al₂O₃ and Al(OH)₃ as aluminum sources.The effects of different manganese and aluminum sources on the properties of manganese aluminate spinel were investigated.The results show that:(1)compared with MnO₂ and MnCO₃,manganese aluminate spinel synthesized with MnO as the manganese source has the higher synthesis rate,lower apparent porosity,higher bulk density,larger grain size of 50 μm and denser structure;(2)compared with Al(OH)₃,manganese aluminate spinel synthesized with α-Al₂O₃ as the aluminum source has less cracks,lower apparent porosity and denser structure.Therefore,dense manganese aluminate spinel with high purity and good crystal development was synthesized by sintering at 1 600 ℃ with α-Al₂O₃ as the aluminum source and MnO as the manganese source.

Key words: manganese aluminate spinel, manganese source, aluminum source, MnO, α-Al₂O₃

中图分类号:

TQ175

商剑钊, 刘宝亮, 徐腾腾, 刘洋, 石凯. 不同锰源和铝源对合成锰铝尖晶石的影响[J]. 耐火材料, 2023, 57(3): 210-214.

Shang Jianzhao, Liu Baoliang, Xu Tengteng, Liu Yang, Shi Kai. Effect of different manganese sources and aluminum sources on synthesis of manganese aluminate spinel[J]. Refractories, 2023, 57(3): 210-214.

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不同锰源和铝源对合成锰铝尖晶石的影响

Effect of different manganese sources and aluminum sources on synthesis of manganese aluminate spinel

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