Magnesia Hercynite Brick
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Magnesia Hercynite Brick

Magnesia hercynite brick is made of ferromagnesia alumina spinel and high pure magnesia as main raw materials by high temperature molding and sintering.This refractory brick has high refractoriness and wear resistance, and can withstand extremely high temperatures and pressures.
MOQ：5 tons

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Product Introduction

Description

Magnesia hercynite brick offers benefits such as higher structural flexibility, chromium-free environmental protection, strong thermal shock stability, good kiln skin hanging ability, good corrosion resistance, low thermal expansion, and low thermal conductivity. The kiln skin is quickly hung in the firing zone, the thickness of the skin is uniform and stable, the brick has a service life of more than a year, there is no large flaking phenomenon with refractory bricks, and there is no flaking phenomenon with refractory bricks when the kiln is stopped. The temperature of the kiln barrel is low, resulting in reduced heat energy loss.

Features

The following characteristics of magnesia hercynite brick:

Excellent resistance to corrosion, with no alkali cracking, loosening, or other issues during usage.

The kiln skin develops quickly, is durable, and does not flake off.

The tolerance of cement kilns to temperature changes can be improved by good thermal shock resistance.

Low thermal conductivity, a rotating kiln shell with a lower surface temperature, and a considerable energy-saving effect.

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Application

Magnesia hercynite brick is mostly utilized in high temperature equipment such as that used in metallurgy, cement, glass, and the chemical sector. Among them, the magnesia aluminum iron spinel brick must be used as a refractory liner in the cement industry's rotary kiln and vertical kiln, as well as the blast furnace in the metallurgical industry, the iron and steel melting furnace, the electric furnace, converter, and coal gasifier. Magnesia aluminum iron spinel brick can be used for glass kiln wall panels, roasters, manifolers, and other parts during the production of glass.

It is also widely used in high temperature equipment in petroleum, chemical, electric power and other industries, such as petroleum cracking furnace, heavy oil hydrogenation unit, catalytic cracking reactor, steam generator and so on.

application

Physical And Chemical Indicators

Brand Properties		JMAS90	JMAS86	JMAS84	JMH90
Bulk Density (g/cm³)		2.95	2.98	3.00	2.95
Cold Crushing Strength (MPa)		65	70	75	60
Apparent Porosity (%)		18	16	15	17
Thermal Shock resistance air cooling(@950℃)		100	100	100	100
@0.2MPa Refractoriness Under Load (℃)		1680	1700	1700	1700
Thermal Conductivity(W/m.K)@1000℃		2.9	2.8	2.8	2.7
(%)Chemical Composition	MgO	90	86	84	89
	Al2O3	6.0	11	14	4.0
	Fe2O3	1.0	0.9	0.5	4.0
	SiO2	1.2	0.7	0.5	1.2
	CaO	1.5	1.1	0.7	1.5
Main Applications		Rotary & Shaft Kiln Nonferrous Metal Furnace

Productive Process

magnesia hercynite brick process

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