高温煅烧铝及铝合金熔渣制备氧化铝

doi:10.16085/j.issn.1000-6613.2016.08.34

化工进展 ›› 2016, Vol. 35 ›› Issue (08): 2523-2527.DOI: 10.16085/j.issn.1000-6613.2016.08.34

高温煅烧铝及铝合金熔渣制备氧化铝

侯蕊红, 王皓, 陈津, 张风林, 宋嘉伟

太原理工大学材料科学与工程学院, 山西太原 030024

收稿日期:2015-12-27 修回日期:2016-02-22 出版日期:2016-08-05 发布日期:2016-08-05
通讯作者: 陈津,教授,博士生导师,研究方向为微波冶金。E-mail:chenjin2013815@126.com。
作者简介:侯蕊红(1988—),女,硕士。E-mail:15234152441@163.com。

High temperature calcinations of aluminum dross for alumina

HOU Ruihong, WANG Hao, CHEN Jin, ZHANG Fenglin, SONG Jiawei

School of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

Received:2015-12-27 Revised:2016-02-22 Online:2016-08-05 Published:2016-08-05

摘要/Abstract

摘要： 铝及铝合金熔渣（简称铝灰）的高效利用是解决环境污染的一个重要途径。本文提出了一种方便、经济、环保利用铝灰的新方法。将铝灰进行研磨、筛分、水洗预处理，高温下直接煅烧预处理样品制备氧化铝。采用X射线荧光光谱（XRF）、X射线衍射（XRD）对铝灰、预处理铝灰及氧化铝产品的化学组成和物相进行分析,并测得最佳样品的白度值及比表面积。研究结果表明：水洗处理铝灰可以除去铝灰中大量的可溶性盐NaCl等提高制备所得氧化铝的纯度；煅烧温度越高，获得氧化铝的纯度越高，在1600℃高温下，煅烧4h，所得氧化铝含量可达95.86%，其白度为87.2，比表面积为38.98m²/g，可用作磨料、催化剂载体等。高温煅烧铝灰可以去除铝灰中大部分杂质，是一种简便、环保、较经济制备氧化铝的方法。

关键词: 铝灰, 高温煅烧, 氧化铝, 回收, 催化剂载体

Abstract: Now,efficient utilization of aluminum and aluminum alloy slag(aluminum dross)is an important problem in solving environmental pollution,and a new method was presented which can realize convenient,economical and environmentally use of aluminum dross. Aluminum dross was firstly ground,screened and washed,then directly calcinated under high temperature to prepare alumina. The chemical composition and phase of aluminum dross,pretreatment aluminum dross and alumina products were analyzed by X-ray fluorescence(XRF)and X-ray diffraction(XRD). Results showed that washing aluminum dross could remove the soluble salt such as NaCl and improve the purity of alumina,and the higher the temperature,the higher the purity. After calcinated for 4 hours at 1600℃,the alumina had a purity of 95.86% and a whiteness of 87.2,and the specific surface was 38.98m²/g,allowing it to be used for abrasive and catalyst support etc. High temperature calcination of aluminum dross can remove most impurities of aluminum dross,and is a convenient,green method to prepare alumina.

Key words: aluminum dross, high temperature calcinations, alumina, recovery, catalyst support

中图分类号:

TF09

侯蕊红, 王皓, 陈津, 张风林, 宋嘉伟. 高温煅烧铝及铝合金熔渣制备氧化铝[J]. 化工进展, 2016, 35(08): 2523-2527.

HOU Ruihong, WANG Hao, CHEN Jin, ZHANG Fenglin, SONG Jiawei. High temperature calcinations of aluminum dross for alumina[J]. Chemical Industry and Engineering Progree, 2016, 35(08): 2523-2527.

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高温煅烧铝及铝合金熔渣制备氧化铝

High temperature calcinations of aluminum dross for alumina

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