سال انتشار: ۱۳۸۶

محل انتشار: یازدهمین کنگره سالانه انجمن مهندسین متالورژی ایران

تعداد صفحات: ۱۰

نویسنده(ها):

Maesome paghandeh – MSc Student, Department of Materials Engineering, Isfahan University of Technology
Ahmad monshi – Associate Professor of Department of Materials Engineering, Isfahan University of Technology
Rahmatollah emadi – Assistant Professor of Department of Materials Engineering, Isfahan University of Technology

چکیده:

In this study six different combinations of raw materials that have the potential
of being used in Low Cement Spinel Castables are investigated. These are
bauxite and calcined magnesite, calcined alumina and calcined magnesite,
refractory cement and microsilica, calcined alumina and microsilica, bauxite
and mill scale, calcined alumina and mill scale. Proper combinations of each
two are mixed with 6% water, pressed in a die, dried and fired for 2 hrs. at
1400 C, then the phases were studied by XRD. By considering refractory and
low melting phases, it could be concluded that bauxite is a stable aggregate that
can be used extensively and microsilica is a binder with problems which must
be reduced to a very low level. For in situ spinel formation of MgAl2O4,
calcined alumina and calcined magnesite combinations work the best and for
Hercynite (FeAl2O4) formation calcined alumina and mill scale are a suitable
combination.