Magnesia Brick From China

Magnesia Brick

High refractoriness above 2000°C;

Excellent alkaline slag erosion resistance;

Volume stability at high temperature;

Excellent anti-oxidation;

Hugh Refractoriness under load about 1500-1550°C;

High initial load softening temperature;

Poor thermal shock resistance;

Good thermal conductivity.

Free Quote; Customization

Brief Description

Magnesia brick is basic refractory brick materials whose MgO content are more than 90% and adopt periclase as the principal crystalline phase. Magnesia brick generally can be classified into sintered magnesia brick (also known as fired magnesia brick) and chemically bonded magnesia brick (also known as non-fired magnesia brick).

Magnesia brick is mainly used in steel-making alkaline furnace, electric furnace hearth and furnace wall, permanent lining of oxygen converter, non-ferrous metal smelting furnace, high-temperature tunnel kiln, calcined magnesia brick and cement kiln lining, glass kiln regenerators checker bricks,etc. Any Interests, please contact us for more information and detailed quotation.

Specification

Index/Item	RS-MZ-91	RS-MZ-93	RS-MZ-95	RS-MZ-97
MgO% ≥	91	93	95	97
SiO2% ≤	–	3.5	2.0	1.0
CaO% ≤	3.0	2.0	2.0	–
Cold Crushing Strength /MPa≥	60	60	60	60
Apparent Porosity /%≤	18	18	16	16
0.2 MPa Refractoriness Under Load / ≥	1560	1620	1650	1700
Reheating Linear Change (1650℃*2h)/%	0~-0.4	0~-0.4	0~-0.3	0~-0.2

Shape & Size Of Magnesia Brick

Straight	Split	Arch	Wedge	Tile	Other Shape
L×W×H(mm)	L×W×H (mm)	L×W×H/h(mm)	L×W×H/h (mm)	L×W×H (mm)	Key brick,
230×114×65	230×114×25	230×114×65/45	230×114×65/45	230×230×38	Skew brick,
230×114×75	230×114×32	230×114×65/55	230×114×65/55	230×230×50	Soap,
	230×114×37	230×114×75/45	220×114×75/45	230×230×65	Checker,
	230×114×50	230×114×75/55	220×114×75/55	230×230×75	Neck,
		230×114×75/65	220×114×75/65		Taper,
We also can make brick according to customers’ drawing and requirements.

Application

1.Iron & steel industry steelmaking linings, ferroalloy furnaces, and mixed iron furnaces
2.Non-ferrous industrial furnaces smelt copper, lead, tin, zinc linings
3.Glass industrial regenerators grids body heat exchanger
4.Refractories industrial tunnel kiln and high temperature firing kiln,etc
5.Building Materials Industry kiln

Classification

In the classification of magnesia bricks by the American Society of Materials and Testing Standards ASTM C 455-1984, magnesia bricks are classified into three grades based on the content of MgO: 90、95、98. The corresponding minimum of MgO are 86%、91% and 96%.

According to the manufacturing process, magnesia bricks can also be classified into fired magnesia bricks, non-fired magnesia bricks and rebonded magnesia bricks.

Magnesia bricks with high purity and high firing temperature are called direct bonded magnesium bricks due to direct contact of periclase crystals; bricks made from fused magnesia as raw materials are called fuse-rebonded magnesium bricks.

Related Refratory Brick

Magnesia Chrome Brick

Magnesia Carbon Brick

Magnesia Zirconia Brick

Magnesium Aluminum Spinel Brick