Magnesia Chrome Brick for Cement Rotary Kiln is a high-performance refractory product engineered for use in the burning zone and transition zone of rotary kilns. Made from high-purity magnesite and chromite, these bricks offer outstanding thermal stability, excellent resistance to thermal shock, and superior corrosion resistance against clinker and alkali materials. They are an essential component for extending kiln lining life and optimizing energy efficiency.
Technical Specifications
| Item / Grade | MGe-16A | MGe-16B | MGe-12A | MGe-12B | MGe-8A | MGe-8B |
|---|---|---|---|---|---|---|
| MgO, % ≥ | 50 | 45 | 60 | 55 | 65 | 60 |
| Cr₂O₃, % ≥ | 16 | 16 | 12 | 12 | 8 | 8 |
| Apparent Porosity, % ≤ | 19 | 22 | 19 | 21 | 19 | 21 |
| Cold Crushing Strength, MPa ≥ | 35 | 25 | 35 | 30 | 35 | 30 |
| 0.2MPa Refractoriness Under Load, °C ≥ | 1650 | 1550 | 1650 | 1550 | 1650 | 1530 |
Key Features
High Refractoriness Under Load (RUL): Withstand temperatures up to 1650°C under load, ideal for high-heat zones.
Excellent Corrosion Resistance: Protects against aggressive chemical attack from cement raw materials and fuel residues.
Good Thermal Shock Resistance: Maintains integrity under rapid temperature changes, reducing spalling.
Low Apparent Porosity: Enhances resistance to slag penetration and structural degradation.
Strong Mechanical Strength: Cold Crushing Strength up to 35 MPa, ensures durability during installation and operation.
Typical Applications
Cement Industry:
Burning zone of rotary kilns
Transition zone
High-stress areas in clinker production
Other High-Temperature Furnaces:
Non-ferrous metal smelting
Glass tank regenerators
Steel ladles (select grades)
Production Details
Our magnesia chrome bricks are manufactured using high-purity fused magnesia and carefully selected chromite materials. The production process includes:
Raw Material Selection: Premium quality magnesia and chromite are selected to ensure chemical stability.
Fine Grinding & Mixing: Materials are ground and homogenously mixed under strict control.
High Pressure Forming: Bricks are shaped by hydraulic press to achieve high density and structural integrity.
High Temperature Sintering: Bricks are fired in high-temperature kilns (over 1700°C) to enhance bond strength and reduce porosity.
Strict Quality Control: Each batch undergoes rigorous inspection to meet international standards, including chemical composition, porosity, strength, and refractoriness.
Packing and Shipping Details
Packaging: Bricks are securely packed in fumigated wooden pallets with plastic wrapping and corner protection to avoid damage during transit.
Unit Weight: Approx. 3.0–4.5 kg/brick depending on size
Shipping: We support international shipping via sea or land freight. Lead time varies based on order quantity, typically within 15–20 days.
Customized Packaging: Available upon request with customer logo and specification label.
Frequently Asked Questions (FAQ)
Q1: What is the typical application of magnesia chrome bricks?
They are mainly used in the sintering zone, transition zone, and burning zone of cement rotary kilns, as well as in non-ferrous metal smelting and glass furnaces.
Q2: What’s the maximum working temperature of these bricks?
The working temperature typically reaches up to 1700°C, depending on the grade and application conditions.
Q3. Are your bricks environmentally friendly?
Yes. We strictly follow environmental protection standards and offer low-Cr or chrome-free alternatives upon request to minimize environmental impact.
Q4: Can I request custom sizes or grades?
Absolutely. We support OEM and tailor-made solutions to match your specific kiln requirements.
Q5: Do you offer technical support for installation?
Yes, we provide professional technical consultation and on-site installation guidance services if needed.
