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Fused magnesium brick

Electrically fused magnesia brick is made of high-quality electrofused magnesia, and is made by precision batching, high-pressure molding by 2500-ton German LAVIS hydraulic press and firing in 111-meter high-temperature tunnel kiln.

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Refractory materials for the glass industry

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Product Introduction

Description: Fused magnesia brick is made of high-quality fused magnesia as raw material, and is fired in a 111-meter high-temperature tunnel kiln by precision batching, high-pressure molding by 2500-ton German LAVIS hydraulic press. Punaoji fused magnesia brick uses natural magnesite fused and calcined magnesia in Qamdo, Tibet as raw materials, which has the advantages of low iron and low silicon. The product has good density, excellent creep resistance and thermal shock stability, can well improve the cracking problem during the use of products, and is an ideal refractory material for the upper and middle parts of the regenerator of glass kiln.

Physical and chemical performance indicators:

Project		HTDM-95	HTDM-96	HTDM-97	HTDM-98
MgO %		≥95	≥ 96	≥ 97	≥ 97.5
SiO₂ %		≤ 1.8	≤1.5	≤ 1.0	≤ 0.8
High % off		≤1.5	≤ 1.3	≤ 1.3	≤ 1.1
Percent porosity A.P%	straight brick	≤ 17	≤ 16	≤ 16	≤ 16
Percent porosity A.P%	barrel type brick	≤ 18	≤ 17	≤ 17	≤ 17
Bulk density B.D g/cm³	straight brick	≥ 2.95	≥ 2.98	≥ 3.00	≥ 3.02
Bulk density B.D g/cm³	barrel type brick	≥ 2.92	≥ 2.95	≥ 2.98	≥ 3.00
Normal temperature compressive strength C.C.S MPa	straight brick	≥60	≥60	≥ 70	≥ 70
Normal temperature compressive strength C.C.S MPa	barrel type brick	≥50	≥50	≥60	≥60
Load softening temperature R.U.L T_0.6℃	straight brick	≥ 1680	≥ 1700	≥ 1700	≥ 1700
Load softening temperature R.U.L T_0.6℃	barrel type brick	≥ 1650	≥ 1680	≥ 1700	≥ 1700
Thermal shock stability (950 ℃ · air cooling), times TSR·Air，Cycles	straight brick	≥ 10	≥ 10	≥ 10	≥ 10
	barrel type brick	≥ 10	≥ 10	≥ 10	≥ 10