Characteristics

MASRAM 85 as the unshaped refractories for high and low frequency induction furnace is mixed a SPINEL manufactured specially, a high quality Magnesia and Alumina in order to supplement the demerits of existing magnesia base or magnesia-alumina base refractories.
And customer are able to operate introduction furnace under safe condition because of MASRAM's small infiltration of slag and ground metal, low erosion, low occurrence of crack and preservation of sufficient safety layer(powder layer).

Properties

Division		A type	B type
Chemical Composition (%)	Al2O3	85.5	88.2
	MgO	14.1	11.23
	CaO	0.03	0.19
	SiO2	0.1	0.08
	Fe2O3	0.1	0.10
	Na2O3	0.17	0.20
Particle size distribution (%)	5-3 m/m	10	10
	3-1 m/m	18	30
	-1 m/m	72	60
		100	100
SPINEL ratio within raw materials (%)		20~40	20 ~ 40
TAP Density (g/㎤)		2.90 ~ 2.94	2.90 ~ 2.94
Permanent Linear Change (1400°C after)		+0.1 ~ +0.3	+0.1 ~ +0.3
Max Operating Temperature		1,750°C	1,750°C
Building Amount (/㎥)		2.94 Ton	2.94 Ton

Uses

• Monolithic refractories for induction furnace

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Uses

• Monolithic refractories for induction furnace