Pore structure of lightweight clay aggregate incorporate with non-metallic products coming from aluminium scrap recycling industry

被引：50

作者：

Bajare, D. ^{[1
]}

Korjakins, A. ^{[1
]}

Kazjonovs, J. ^{[1
]}

Rozenstrauha, I. ^{[2
]}

机构：

[1] Riga Tech Univ, Fac Civil Engn, LV-1048 Riga, Latvia

[2] Riga Tech Univ, Fac Mat Sci & Appl Chem, LV-1048 Riga, Latvia

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2012年 / 32卷 / 01期

关键词：

Sintering; Microstructure; Expanded clay aggregates; Black dross; WASTE;

D O I：

10.1016/j.jeurceramsoc.2011.07.039

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This paper deals with the non-waste utilisation of aluminium recycling waste called non-metallic products (NMP) and their reprocessing into environmentally friendly material. In the present studies, lightweight expanded clay aggregates were produced from natural plastic clay and NMP. They were obtained recovering Al metal from black dross by using conventional metallurgical process. Based on the results obtained from chemical and mineralogical investigations of NMP, heat treatment in the temperature range from 1150 degrees C to 1280 degrees C was selected as an appropriate method to eliminate impurities of residues., such as aluminium nitride (AlN), iron sulphite (FeSO(3)), aluminium chloride (AlCl(3)). Emissions of gases during high-temperature treatment of NMP act as initiators to create extra porous structure of sintered ceramic bodies. The effect of raw material composition, previous treatment of NMP and sintering temperatures on the aggregate's properties were evaluated. Physical and rnicrostructural properties of sintered aggregates were determined. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：141 / 148

页数：8