Magnesia Refractory Bricks
Magnesium brick is an alkaline refractory material with a magnesium oxide content of more than 89% and periclase as the main crystal phase. It can generally be divided into two categories: sintered magnesia brick (also known as fired magnesia brick) and chemically bonded magnesia brick (also known as unfired magnesia brick). Magnesium bricks with high purity and firing temperature are called direct-bonded magnesia bricks because the periclase grains are in direct contact; bricks made from fused magnesia sand as raw materials are called fused re-bonded magnesia bricks.
Magnesia bricks have high refractoriness, good alkaline slag resistance, high load softening starting temperature, but poor thermal shock resistance. Sintered magnesia bricks are made of magnesia as raw material. After crushing, batching, mixing and molding, they are fired at a high temperature of 1550-1600℃. The firing temperature of high-purity products is above 1750℃. Uncast magnesia bricks are made by adding appropriate chemical binders to magnesia sand, mixing, molding and drying.
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INDEX
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MG-91
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MG-95A
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MG-95B
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MG-97A
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MG-97B
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MG-98
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Bulk Density(g/cm3) ≥
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2.90
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2.95
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2.95
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3.00
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3.00
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3.00
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Apparent Porosity(%) ≤
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18
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17
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18
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17
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17
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17
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Cold Crushing Strength(MPa) ≥
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60
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60
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60
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60
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60
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60
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Refractoriness Under Load @0.2MPa(℃) ≥
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1580
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1650
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1620
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1700
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1680
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1700
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MgO(%) ≥
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91
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95
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94.5
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97
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96.5
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97.5
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SiO2(%) ≤
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4.0
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2.0
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2.5
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1.2
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1.5
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0.6
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CaO(%) ≤
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3 |
2.0
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2.0
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1.5
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2.0
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1.0
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Mainly used in the permanent lining of steel furnace, lime kiln, glass kiln regenerator, ferroalloy furnace, mixed iron furnace, non-ferrous metal furnace and the lining of other steel, non-ferrous metallurgy furnace and building materials industry kiln.
Shandong Robert New Material Co., Ltd. is located in Zibo City, Shandong Province, China, which is a refractory material production base. We are a modern enterprise that integrates the research and development, production, sales, kiln design and construction, technology, and export refractory materials. We have complete equipment, advanced technology, strong technical strength, excellent product quality, and good reputation. Our factory covers over 200 acres and an annual output of shaped refractory materials is approximately 30000 tons and unshaped refractory materials is 12000 tons.
Our main products of refractory materials include: alkaline refractory materials; aluminum silicon refractory materials; unshaped refractory materials; insulation thermal refractory materials; special refractory materials; functional refractory materials for continuous casting systems.
Robert`s products are widely used in high-temperature kilns such as non-ferrous metals, steel, building materials and construction, chemical, electric power, waste incineration, and hazardous waste treatment. They are also used in steel and iron systems such as ladles, EAF, blast furnaces, converters, coke ovens, hot blast furnaces; non-ferrous metallurgical kilns such as reverberators, reduction furnaces, blast furnaces, and rotary kilns; building materials industrial kilns such as glass kilns, cement kilns, and ceramic kilns; other kilns such as boilers, waste incinerators, roasting furnace, which have achieved good results in using. Our products are exported to Southeast Asia, Central Asia, Middle East, Africa, Europe, Americas and other countries, and has established a good cooperation foundation with multiple well-known steel enterprises. All employees of Robert sincerely look forward to working with you for a win-win situation.
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