Fused Magnesite

Product Overview

Description

 

 

Chemical Analysis(with some additive)

 

MgO	CaO	Al2O2	Fe2O3	SiO2
95 ± 3	1.2± 0.5	0.7± 0.3	≤0.50	2.5± 1.0

 

Particle Distribution: (ASTMstandard)

 

Mesh	+40	-40~+60	-60~+80	-80~+140	-140~+200	-200~+325	-325
Quantity(%)	0-0.1	32±6	20±4	23±5	10±4	10±4	3±3

 

 

 

Electrically fused magnesia has gradually won a place in the special refractories group, owing to its physical superiority over the ordinary grades of dead-burned magnesite. The history of its development dates from the world-war period, when considerable interest was aroused in the sources of supply of magnesite in this country. The economic advantages depend largely on the European situation and the prevailing price for the fused material, but the practical advantages of using a totally shrunk, well-crystallized material are obvious. The crystalline material obtained from various grades of raw material differs somewhat in its physical characteristics, and there is a decided difference in the physical properties between dead-burned magnesite and electrically fused magnesia.