Raw materials for mullite grog manufacturing

Construmat 2018

Nevrivova, L.^1

Institute of Technology of Building Materials and Components, Faculty of Civil Engineering, Brno University of Technology, Veveri 95, Brno

602 00, Czech Republic^1

关键词: Al2O3 contents;    Alumina content;    Aluminium oxide;    Czech Republic;    European markets;    Local raw materials;    Manufacturing IS;    Market price;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/385/1/012038/pdf
DOI  :  10.1088/1757-899X/385/1/012038

来源: IOP

【 摘 要 】

The starting raw materials for aluminosilicate grog manufacturing are fissile claystones and shales. These raw materials are available in the Czech Republic and grogs with up to 45 % aluminium oxide content are manufactured. However, refractory production cannot do without higher-Al2O3 -content grogs. This group includes grogs with alumina content of 45 % to 70 %, which constitute a transition between fire clay and mullite grogs. Because of the high market price of these grogs, however, there is an effort to seek ways to manufacture these in the Czech Republic. The primary condition for manufacturing is the correct choice of raw material, a suitable treatment facility, and a kiln capable of firing at temperatures above 1400 °C. This paper assesses some local raw materials for grog manufacturing and compares the results with a mullite grog of similar properties that is available on the European market.