Refractory Raw MaterialsMagnesia and spinel raw materials

Fused Alumina Magnesia Spinel

Fused alumina magnesia spinel is supplied as a refractory raw material in three grades, RSAM-90, RSAM-80 and RSAM-70, as grain and as powder, according to the specification below.

Grades / types: RSAM-90, RSAM-80, RSAM-70
Grain sizes: 0-1, 1-3, 3-5, 5-8 mm
Powder sizes: -180, -200, -320 mesh

Product overview

Fused alumina magnesia spinel is supplied as a refractory raw material in the grades RSAM-90, RSAM-80 and RSAM-70. The catalogue states Al₂O₃ and MgO ranges, CaO, Fe₂O₃ and SiO₂ limits, true density, and the available grain and powder sizes.

Technical data

Specification
Property	Unit	RSAM-90	RSAM-80	RSAM-70
Al₂O₃	%	88-92	82-87	71-76
MgO	%	8-12	12-17	22-27
CaO	%	≤0.4	≤0.4	≤0.6
Fe₂O₃	%	≤0.35	≤0.35	≤0.35
SiO₂	%	≤0.25	≤0.4	≤0.4
True Density	g/cm³	≥3.3	≥3.3	≥3.3
Grain Size	mm	0-1, 1-3, 3-5, 5-8	0-1, 1-3, 3-5, 5-8	0-1, 1-3, 3-5, 5-8
Powder Size	mesh	-180, -200, -320	-180, -200, -320	-180, -200, -320

True density, grain size and powder size are stated once in the specification for all grades.
The specification prints "SiO2" without subscript in this table; rendered as SiO₂ here, value unchanged.