Magnesia Calcium Bricks
Magnesia calcium bricks are made of high-quality synthetic magnesium calcium sand. The CaO/MgO ratio is designed according to different use environments. They use anhydrous binders, are sintered at high temperatures, and are vacuum-pressurized and impregnated with asphalt or paraffin. They have excellent high-temperature performance and slag resistance. They also have the functions of dephosphorization, desulfurization, and removal of non-metallic inclusions to clean molten steel.
Core Advantages:
1. Superior Alkaline Slag Resistance & High-Temp Stability: Refractoriness under load ≥1700°C, outstanding resistance to basic slag corrosion, ideal for AOD/VOD furnaces, converter tuyeres, open-hearth furnace roofs
2. Molten Steel Purification: Free CaO removes phosphorus, sulfur, and non-metallic inclusions (e.g., Al₂O₃) from molten steel, enhancing the cleanliness and quality of stainless steel and special steels
3. Full Customization & Factory Direct: Tailored MgO/CaO ratio, special shapes, sizes, anti-hydration treatment available. Short production lead time, complete quality traceability
4. Eco-Friendly Chromium-Free Formula: Complies with global environmental standards, no harmful emissions
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INDEX
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MCa-15
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MCa-20
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MCa-25
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MCa-30
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MCa-40
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MgO%
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75
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70
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65
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60
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55
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CaO%
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15
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20
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25
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30
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40
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Σ(A+F+S)%
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2.8
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2.8
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3
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3
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3
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Apparent Porosity
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10
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10
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10
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10
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8
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Cold Crushing Strength(MPa)
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55
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55
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55
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55
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55
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0.2MPa T0.6 R.U.L℃
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1700
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1700
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1700
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1700
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1700
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1. Widely used in AOD, VOD, GOR, CLU and other smelting devices for smelting stainless steel.
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.
Frequently Asked Questions
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We are a real manufacturer, our factory is specialized in producing refractory materials for more than 30 years. We promise to provide the best price, the best pre-sale and after-sale service.
For each production process, RBT has a complete QC system for chemical composition and physical properties. And we will test the goods, and the quality certificate will be shipped with the goods. If you have special requirements, we will try our best to accommodate them.
Depending on the quantity, our delivery time is different. But we promise to ship as soon as possible with guaranteed quality.
Of course, we provide free samples.
Yes, of course, you are welcome to visit RBT company and our products.
There is no limit, we can provide the best suggestion and solution according to your situation.
We have been making refractory materials for more than 30 years, we have strong technical support and rich experience, we can help customers design different kilns and provide one-stop service.
