Name: China Refractory Magnesia Calcium Bricks Manufacturers, Suppliers and Factory - Good Price
Brand: Long Keter
SKU: 221058325

Products Description

Magnesia-calcium bricks are made of high-quality light-burned magnesia raw materials and high-purity calcium raw materials, which are sintered at high temperatures. It has excellent fire resistance, corrosion resistance, wear resistance and alkali resistance, and is widely used in high-temperature occasions such as high-temperature furnaces and chemical plants. It has the characteristics of good waterproofing, good thermal insulation and good thermal shock resistance.

Product Categories:

According to different formulas, magnesia-calcium bricks can be divided into two types: ordinary magnesia-calcium bricks and high-purity magnesia-calcium bricks.

Ordinary magnesia-calcium bricks are commonly used in high-temperature equipment in metallurgy, boilers, glass, chemical industry, construction and other industries.

High-purity magnesia-calcium bricks have lower contents of graphite, aluminum fluoride, etc. than ordinary magnesia-calcium bricks, and are widely used in special industries such as silicon-magnesia furnaces and fiberglass reinforced plastics.

Products Parameters

Type		LKMG15	LKMG20	LKMG25	LKMG30	LKMG40	LKMG50
MgO(%)		80.3	76.3	70.3	66.3	56.3	43.3
CaO(%)		17	21	27	31	41.0	54
Al2O3(%)		0.5	0.5	0.5	0.5	0.5	0.5
Fe2O3(%)		0.7	0.7	0.7	0.7	0.7	0.7
SiO2(%)		1.3	1.3	1.3	1.3	1.2	1.3
Bulk density(Kg/m³)		3030	3030	3030	3030	3000	2930
Apparent porosity%		13	12	12	13	13	12
Cold Crushing Strength (MPa)		80	90	80	80	80	70
Refractoriness Under Load 0.2MPa℃		1700	1700	1700	1700	1700	1700
Rupture strength (Mpa)		2.5-4.5	2.5-4.5	2.5-4.5	2.5-4.5	2.5-4.5	2.5-4.5
Reheat test,Permanent linear change (%)		–	– 0.35	–	– 0.61	–	–
Thermal conductivity(W/m.k)-1		3~4	3~4	3~4	3~4	3~4	3~4
Thermal expansion(%)	800℃	0.8~1.0	0.8~1.0	0.8~1.0	0.8~1.0	0.8~1.0	0.8~1.0
	1200℃	13.5~1.6	13.5~1.6	13.5~1.6	13.5~1.6	13.5~1.6	13.5~1.6
	1200℃	1.8~2.0	1.8~2.0	1.8~2.0	1.8~2.0	1.8~2.0	1.8~2.0

Products Advantages

1. High fire resistance: The fire-resistant temperature of magnesia-calcium bricks can reach more than 2000°C, and can be used for a long time in extremely high temperature environments, which can well protect the safety of equipment;

2. Wear resistance and corrosion resistance: Magnesia calcium bricks have high wear resistance and corrosion resistance, which can effectively avoid corrosion and loss of equipment;

3. Chemical resistance: Magnesia-calcium bricks have good resistance to chemical environments such as strong acid and strong alkali, and can cope with chemical reactions well;

4. Good waterproofing: Magnesia-calcium bricks have good waterproofing properties and can effectively avoid corrosion and loss caused in humid environments;

5. Good thermal insulation: Magnesia-calcium bricks have good thermal insulation properties and can effectively isolate heat conduction in high-temperature environments;

6. Good thermal shock resistance: Magnesia-calcium bricks have good thermal shock resistance and can remain stable in long-term high temperature environments.

7. It has light specific gravity and low density, about 50% lighter than ordinary bricks, which can effectively reduce the quality of the building and reduce the structural load;

8. Non-toxic and harmless, with good environmental performance, does not contain any harmful ingredients and has no impact on the environment;

9. It is not easy to peel off and has low maintenance cost. Because the magnesia calcium brick material is strong, it is not easy to peel off and has low maintenance cost.