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| Classification: | High-Alumina |
| Feature: | Good Mechanical Strength, Good Thermal Insulation Performance, High-Temperature Resistant, Light Weight, Low Thermal Conductivity |
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Refractory Cement Introduce
Calcium aluminate cement/aluminate cement/high alumina cement are collectively referred to as refractory cement. High alumina cement (formerly known as bauxite cement) is a hydraulic cementing material made of high-purity calcium materials and high-purity alumina as the main raw materials, and clinker with alumina content of about 50%.According to the different content of Al2O3,they can have totally foue types:CA50,CA60,CA70 and CA80.
CA-50, CA-70, CA-80, the alumina content is greater than 48%, 68% and 77% respectively. Its refractoriness is greater than 1650°C. The use temperature can reach 1800ºC, and the impurity content is lower than other common cements.
Advantages of Refractory Cement
1.High refractoriness, up to 1650ºC±50ºC;
2.High density, low porosity.
3.High strength and wear resistance.
4.Good thermal exfoliation.
5.Good resistance to slag invasion;
6.Good plasticity and convenient construction;
7.High bonding strength
8.Good thermal shock stability.
High Alumina Refractory Cement Applications
The application industries of refractory cement include metallurgy, building materials, machinery, petrochemicals, ceramics, glass, boilers, electricity, steel, cement, etc. Mainly used in coke ovens, glass furnaces, blast furnace hot blast furnaces, and other industrial kilns.
Refractory cement is a high-quality binder that can be used to make high-performance low cement and high aluminum castables, refractory concrete, ramming materials, gunning materials, and other castables, or unshape block refractory materials used under high temperature, high pressure, and reducing conditions.Used for building or repairing various high-strength insulation or acid resistant kilns, etc.

High Alumina Refractory Cement
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Item
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High Alumina Cement
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CA50
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CA65
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CA70
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CA75
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CA80
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Al2O3%≥
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50
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64-66
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69-71
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73-75
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77-80
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Fe2O3%≤
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2.5
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0.8
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0.7
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0.6
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0.5
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SiO2%≤
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7.5
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1.2
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1
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0.8
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0.5
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R2O%≤
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0.4
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0.4
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0.4
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0.4
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0.4
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Cl%≤
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0.1
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0.1
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0.1
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0.1
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0.1
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S%≤
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0.1
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0.1
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0.1
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0.1
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0.1
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325 mesh remind≤
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12
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5
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5
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5
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5
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Surface(m2/kg)≥
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320
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380
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400
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430
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450
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Initial Setting Time, min≥
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60
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120
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120
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120
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120
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Final Setting Time, min≤
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360
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420
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420
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420
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420
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Crushing Strength, MPa≥
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1day
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55
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45
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40
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35
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30
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3days
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65
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55
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50
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45
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40
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Bending Strength, MPa≥
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1day
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6.5
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5.8
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5.5
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5.2
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5
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3days
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7.5
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6.7
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6.5
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6.3
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6
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Refractoriness (°C)
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1650
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1680
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1730
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1750
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1770
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1.25kgs / bag or 1000kgs / big bag with or without pallet, or by customer's request.
2.Normally loading 25 tons in 1 FCL.
Every possible precaution is taken to ensure our products in prime condition when reach customers around the world.By sea or air. Normally 7 to 14 Days for delivery, according to your order quantity.



ZHENGZHOU RONGSHENG REFRACTORY CO., LIMITED has 30 years of experience in R & D and design of unshape refractory experts, holds 20 utility model patents and 7 invention patents, and has passed the ISO quality, environment and safety management system certification. The company is committed to the R & D, production and service of refractories used in metallurgy, electric power, nonferrous metals, building materials, chemical industry and other industries. Its products cover 198 kinds of materials and 2369 varieties in three categories (acidic, neutral and alkaline), providing overall solutions for refractories for 1200 domestic and 200 foreign customers.

Rongsheng Refractory has professional sales and after-sale service team who provide customers all-around service about product application, construction installation and operation technology training etc. Now we have established cooperation relationship with many science and research unit and our products have been sold to Japan, Indonesia,Kazakhstan and Vietnam etc.
Rongsheng Refractory insists on pursuing the management idea of "honest, courtesy, innovation and professionalism" as the purpose,taking the "low price for better quality" as the foundation of enterprise development and creating "Rongsheng Brand" as the enterprise strategic goal. And Rongsheng provides satisfying, timely and efficient service for customers based on scientific management process, complete customer information management system and abundant products types.
Q: Are you trading company or manufacturer ?
A: We are Manufacturer of refrcatory materials, We can provide you with high quality products at more competitive prices.
Q: When can I get the price?
A: We usually quote within 24 hours after getting your detailed requirements, like size, quantity etc. If it is an urgent order, you can call us directly.
Q: What about the lead time for mass product?
A: The lead time is based on the quantity, about 7-12days.