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Electrically Fused Magnesia-Alumina Spinel The electrically fused magnesia-alumina spinel is a synthetic refractory material from alumina (purity over98.5%),light fired magnesia (purity over96%)and some high purity magnesite(Mg()over46.5%)by high temperature melting in electrical arc furnace. The fused Mg-Al spinel consists of well grown crystals and possesss high density and structure homogeneity so it is a high quality 　
　

　



　

　








　

Product
high grade Mg-Al Spinel
Medium grade Mg-Al Spinel
Index
Chemical composition
MgO
20-60
40-70
AL2O3
40-80
30-60
MgO+AL2O3
97
90
SiO2
1.0
6.0
Fe2O3
0.3
0.5
Bulk density ≮
3.3
3.2
Apparent porosity ≯
3
5
Zhengzhou ShuangLi mineral processing co.,ltd Tel：086-371-65319125
starting material for manufacturing spinel-periclase refractorise with high strength and good thermal shock resistance.
The electrically fused Mg-Al spinel is an ideal raw material for the production of sliders in continuous casting,gate bricks for casting mozzle,firebricks for lining of ladle,liner bricks for cement kiln,refractory castable,kiln furniture for medium and high temperature applications The Mg-Al spinel refractory products possess good high temperarure mechanical properies.