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Building 1, Zone 1, Greenland Binhu International City, Zhengzhou, Henan, China
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Weekend: 10AM - 6PM
Refractory Cement
Refractory cement is a calcium aluminate-based hydraulic cementitious material made primarily from bauxite and limestone through calcination and grinding. Its core characteristic is a refractoriness of not less than 1580℃. Based on these characteristics, it is mainly used to prepare refractory concrete or mortar as linings for industrial kilns and other thermal equipment.
Product Description
Refractory cement, scientifically known as aluminate cement, is a hydraulic cementitious material made primarily from bauxite and limestone through calcination and grinding. Its core characteristic is a refractoriness of not less than 1580℃, maintaining strength and stability at high temperatures. It is mainly used in the preparation of refractory concrete or mortar as linings for industrial kilns and other thermal equipment.
Characteristics of Refractory Cement
Excellent High-Temperature Resistance
This is its most fundamental characteristic. Refractory cement typically has a refractoriness of 1300℃ to 1400℃, and some high-purity varieties can even withstand temperatures above 1650℃. This makes it an ideal choice for high-temperature industries.
Rapid Hardening and Early Strength
Its setting and hardening speed is much faster than ordinary cement. Typically, refractory cement can reach more than 80% of its final strength in one day, significantly shortening the construction period.
Strong Resistance to Chemical Corrosion
Its hardened cement paste does not contain components commonly found in ordinary cement that are easily corroded, thus exhibiting strong resistance to chemical attack such as sulfates.
Concentrated Heat of Hydration
A large amount of heat is released during the hardening process, and the heat release is very concentrated. This characteristic makes it suitable for construction in winter, but also makes it unsuitable for large-volume concrete projects to prevent internal overheating and cracking.
Application of Refractory Cement
This is the core use. It is mixed with refractory aggregates such as corundum and high-alumina bauxite to make refractory castables or refractory concrete, which is used to construct the linings of various high-temperature kilns (such as cement rotary kilns, metallurgical blast furnaces, and heating furnaces).
Taking advantage of its characteristics of rapid hardening and early strength, it is often used in projects that require rapid restoration of use, such as road repairs, military engineering, and structural leak plugging.
Due to its excellent resistance to sulfate corrosion, it is also used in special projects where there is a risk of such chemical attack.
Classification of Refractory Cement
The performance of refractory cement is mainly determined by its chemical composition, especially the content of alumina (Al₂O₃). Based on composition and properties, it is mainly divided into the following categories:
| Common Types | Alumina Content | Refractoriness | Core Characteristics and Typical Applications |
| Ordinary Calcium Aluminate Cement (Alumina Cement) | 53-55% | >1500℃ | The most common type, used for formulating clay-based and high-alumina refractory castables. |
| Alumina-60 Calcium Aluminate Cement (Low-Calcium Aluminate Cement) | 59-61% | >1550℃ | Increased alumina content, higher refractoriness, and wider applications. |
| Pure Calcium Aluminate Cement | 74-76% | >1750℃ | High purity and good strength. Used as a binder for high-grade castables such as corundum and mullite. |
| Alumina-Rich Pure Calcium Aluminate Cement | 80-82% | >1790℃ | Highest alumina content, excellent refractoriness, used in ultra-high temperature environments. |
Company Profile
About Ruitai Lianxin
Henan Ruitai Lianxin Refractory Materials Co., Ltd is a modern R&D-centered refractories manufacturing enterprise integrated with refractories sales and marketing, furnace engineering construction, recycling and sales of waste refractories as well as refractory raw material, technology and goods import and export, and technical services.
Well-equipped and technologically advanced, ISO/QHSE-certified management underpins a product line of ordinary, medium and high-grade magnesia series brick, magnesia-chrome brick, magnesia-alumina spinel brick, magnesia-alumina- chrome basic brick, lightweight brick, clay brick, high alumina brick, corundum brick, silicon carbide brick and insulation materials, monolithic castable, ramming mix, plastic, etc.
We manufacture more than 70 categories of refractory bricks with more than a thousand specifications and models, which are widely used in high-temperature kiln/furnace, non-ferrous metallurgical smelter, cement lime rotary kiln, glass-melting furnace, electric power, petrochemical hazard waste incinerator etc.
Factory Show
As a 20 refractory brick manufacturer, we have our own factory, professional machinery and equipments, strong technical team, complete delivery process, perfect after-sales service.
Production Process
We have a complete production process, from raw materials to molding, and then to finished products. Each step is operated and inspected by dedicated personnel to ensure the high quality fire bricks.
Raw Materials
Mixing and Tempering
Forming
Drying
Sintering
Selecting
Packing
Shipping
Packaging & Shipping
Our fire bricks are delivered to customers in the shortest possible time by land, sea or air.
Company Advantages
Customer Cases
As a fire bricks world-renowned exporter, we have expanded our business scope to the world, providing high quality firebricks to customers worldwide. We have gained loyal customers all over the world, reached cooperation again and again, and become the first choice of global customers.
Cooperation Partners
As a refractory bricks source manufacturer for 20 years, we use the best materials and the most cutting-edge technology to carefully make fire bricks, our firebricks have all kinds of types to meet various application needs, has won many reliable cooperation partners.
Questions & Answers
Q1: Could I get a sample before placing an order?
A1: Yes. A sample as per your requirement can be prepared for approval.
Q2:How can I get your prompt quotation?
A2:We can give you reply with quotation quickly if you kindly send the inquiry with following factors: dimension (length*width*thickness), service temperature, application and quantity.
We’d be appreciated if you can also provide the density and content.
Q3: Do you have stocks?
A3: Yes, but only for regular size.
Q4: How do you deliver my orders?
A4: Our experts can recommend you the suitable way based on the quantity and your budget. Normally ,it is by sea.
Q5: I am a big buyer, can I get a competitive price?
A5: Yes, you will get our lowest price without quality compromise along with our professional service.As we are working with mainly players in Europe, Asia, America and Afraic.
Q6: What is your quality control?
A6: 1.Chemical inspection is performed during Raw material, production and finished refractory materials.
2.Physical test is performed for finished refractory bricks.
Q7: Are you a fire bricks manufacture or trader?
A7: We are truly a refractory materials manufacturer, Ruitai Lianxin not only can provide the high quality refractory materials with the best price, but also can offer the best pre-sale service and after-service.
Q8: Do you accept size and shape customization? Are the specifications accurate?
A8: Yes! We have a professional R&D team, and advanced QC inspection equipments to ensure the accurate size and shape for you.
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