Factory Wholesale Refractory Castable Alumina Ceramic Lightweight Insulation Material Castables for Cement Kiln
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Product Highlights
- High Temperature Resistance: Refractoriness ranges from 1770 to 2000 degrees Celsius for extreme heat applications.
- Lightweight Insulation: Low bulk density (0.4-0.5 g/cm3) and low thermal conductivity for superior energy saving.
- High Mechanical Strength: Cold crushing strength of 50-70 MPa ensures durability in industrial furnace environments.
- Versatile Application: Ideal for cement kilns, CFB boilers, chemical industry, and acid-resistant tank linings.
- OEM/ODM Customization: Supports customization from samples and designs, including packaging and product specifications.
- ISO9001 Certified: Manufactured under strict quality control with ISO9001, ISO45001, and ISO14001 certifications.
- Fast Response Support: Professional team provides quick replies and long-term relationship service for all inquiries.
- Flexible Packaging: Available in 25kg/50kg waterproof kraft bags or ton bags on fumigation pallets per request.
Product Attributes
- Customization
- Available
- Classification
- High-Alumina
- Feature
- Good Mechanical Strength, Good Thermal Insulation Performance, High-Temperature Resistant, Light Weight, Low Thermal Conductivity, High Temperature Resistance
- Model NO.
- Lightweight Insulation Castable
- Production Process
- Casting Method
- Refractoriness (℃)
- 1770< Refractoriness< 2000
- Shape
- Powder
- Product Name
- Castables for Cement Kiln
- Cold Crushing Strength(MPa)
- 50~70MPa
- Keyword
- Alumina Ceramic Lightweight Castable
- Application
- Industrial Furnaces
- Function
- High Temperature Resistant
- Raw Material
- Industrial Alumina Oxide Powder
- Certificate
- ISO9001, CE
- Package
- Customizable
- Type
- Refractory Material
- Transport Package
- Bag
- Specification
- 25kg/bag, 50kg/bag
- Trademark
- Rongsheng Refractory
- Origin
- China
- HS Code
- 3816000000
- Production Capacity
- 50000 Tons/Year
Product Images of Factory Wholesale Refractory Castable Alumina Ceramic Lightweight Insulation Material Castables for Cement Kiln
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Product Description

Lightweight Insulating Castable Description
Light weight insulation castable material is a light insulation material as the main material, together with the bonding material, according to the best ratio of dry and mixed from a kind of water-based materials.Lightweight insulating castable is usually worked by casting method, or gunning method, spraying coating method, that's why it is also called lightweight concrete, or lightweight coating mix, lightweight unshaped refractory.
Lightweight Insulating Castable Features
Lightweight insulating castable has good workability and fast working speed, especially for inner lining with complex structure and shapes, the advantages of lightweight insulating castable is more significant. Besides, light insulating castable has low thermal conductivity and low thermal capacity,high strength, resistant to acid and acidic gas corrosion.it is energy-saving, so it is widely used in high temperature projects as insulating material.
Lightweight Insulating Castable Physiochemical Indexes
| Item | Insulating castable | Perlite insulating castable | Diatomite insulating castable |
| Al2O3 % | 30 | 20 | 15 |
| Bulk density g/cm3 | 0.5 | 0.4 | 0.4 |
| Crushing strength MPa(110ºC) | 2.5 | 2 | 1.5 |
| Thermal conductivity(w/m·K) | ≤0.20 | ≤0.1 | ≤0.06 |
| Max. working temperature ºC | 900 | 600 | 600 |
Lightweight Insulating Castable Applications
Lightweight insulating castable is widely used in the insulating lining or working lining of industrial furnaces, covering CFB boiler, chemical industry, petrol industry and so on.
Can also be used for oil, chemical, nonferrous metallurgy and other industries acid tank, tank and other acid projects. Light insulation castables are widely used in boilers. Industrial furnace kiln and other body insulation engineering field.
Packaging: 25kg/bag or 50kg/bag, two layers kraft bag with water proof, and with ton bag outside or each ton packed on a fumigation pallet according to customers' request. 

Zhengzhou Rongsheng Refractory Material CO., LTD.
Established in the early nineties of twenty century, with continuous innovation and development, now it is a comprehensive enterprise in refractory materials industry, covering metallurgy, building materials, electric power, chemical industry etc.
We have own workshop , advanced production line , experienced workman and stricted check out flow .
So choosing us is the right choice for you.If you are interested in our Low cement refractory castables or if you have any question, pls feel free to contact us at any time. We will reply as soon as possible.
Now we have established cooperation relationship with many science and research unit and our products have been sold to Japan, Indonesia, Russia,Kazakhstan and Vietnam etc.
We provide service that bring 100% of our customers back.
So many customers make business with Rongsheng Refractory.We have no gap in communication.The customers all keep long-term relationships with us.


Q1. Are you Manufacturer?
A: Yes, of course, our factory is in Xinmi,zhengzhou city,Henan province.
Q2. Can we visit your company?
A: Sure,welcome at any time,seeing is believing.
Q3. Do you accept OEM?
A: Yes, we can do OEM.
Q4. What's the MOQ of trial order?
A: No limit,We can offer the best suggestions and solutions according to your condition.
Q5. What are the payment terms?
A: Usually T/T,but L/C,Western Union etc are available for us.
Q6. How long is delivery time?
A: The delivery time will be determined according to the quantity of the order.
Q7.How about your company's certification?
A: ISO9001 and Test Report,also we could apply other necessary certification.
About the Supplier
This supplier has been audited by BV. Verify the report on the official BV website with ID "MIC-ASR2591342". Items marked "" are certified.
Company Profile
Rongsheng Refractory specialize in refractory products for nearly 30 years, covering a full range of High Alumina Bricks, Sillica Bricks, Fused AZS 33/36/41 Bricks, Mullite JM 23/26/28/30 Bricks, Magnesia Bricks, Magnesia Chrome Bricks, Magnesia Carbon Bricks, SiC Bricks, Dense and Light Weight Insulaing Castables, Graphite Electrode and other related products for more sophisticated applications.
Our products are widely used in metallurgy, nonferrous metals, building materials, electric power, petrochemical and other industries. The company has an automatic production line with an annual output of 80, 000 tons of intelligent unshaped refractory products. Its products are sold in more than 120 countries around the world and have won wide acclaim from customers.
Rongsheng Refractory pays attention to technological innovation and product research and development, and has established close cooperative relations with many universities and scientific research institutes. It has successively established technical research and development centers and product testing laboratories, and has advanced refractory physical and chemical testing equipment. The company has also passed the quality management system, environmental management system, occupational health and safety management system certification, high-tech enterprise certification, etc.
We have focused on the development and innovation of refractory materials and high-temperature furnace technology, and strive to provide customers with comprehensive, personalized and cost-effective services with high-quality products. Our products are widely used in electric power, metallurgy, petrochemical and other fields, and are exported to more than 120 countries and regions in the world such as Europe, America, Oceania, Southeast Asia, and the Middle East.
We can provide you with the most advantageous quotations and products. Looking forward to be your partner!
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory & Trading Company
- Address
- 10th/11th Floor, Building 6, China Central Electronic Commerce Port, Daxue Road, Erqi Dist, Zhengzhou, Henan, China
-
Plant Area
- 8004 square meters
-
Number of Employees
- 133
-
Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
-
Average Lead Time
-
Peak Season Lead Time: one month
Off Season Lead Time: within 15 workdays -
Nearest Port
- Qingdao Port
-
Minimum Order Quantity
- 1 ton
-
Supply Chain Partners
- 30
Our Production Capability & Technical Expertise
-
Main Products
- Refractory Brick, Refractory Castable, Graphite Electrode, Refractory Cement, Ramming Mass, High Alumina Bricks, Magnesia Bricks, Corundum Bricks, Mullite Bricks, Insulation Bricks
-
Production Lines
- 2
-
Production Machines
- Crushing Machine, Packing Machine, Storage Bin, Mixing Machine
-
QA/QC inspectors
- 5 people
-
Inspection Type for Finished Products
- Random inspection(Visual inspection & Function inspection)
-
Inspection Method for Finished Products
- Have instructions and uniformly followed
-
Customization Options
- Customization from Samples, Customization from Designs
-
ODM Service Available
- Yes
-
OEM Service Available
- Yes
-
R&D Engineers
- 3 people
-
Traceability of Raw Materials
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2011-03-23
-
Export Year
- 14 years
-
Main Markets
- South America, Europe, Southeast Asia/ Mideast, Africa, Middle Asia
-
Repeat Buyers Choice
- 30%~50%
-
Number of Foreign Trading Staff
- 32
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- No
Our Certifications, Standards & Industry Recognition
-
Management System Certification
- ISO9001:2015, ISO45001:2018, ISO14001
-
Product Certification
- CE
-
Cooperated with Fortune 500
- No
FAQ
- Are you a manufacturer?
- Yes, of course, our factory is in Xinmi, zhengzhou city, Henan province.
- Can we visit your company?
- Sure, welcome at any time, seeing is believing.
- Do you accept OEM?
- Yes, we can do OEM.
- What is the MOQ for a trial order?
- No limit. We can offer the best suggestions and solutions according to your condition.
- What are the payment terms?
- Usually T/T, but L/C, Western Union, etc. are available for us.
- How long is the delivery time?
- The delivery time will be determined according to the quantity of the order. Peak season lead time is one month, and off-season is within 15 workdays.
- What certifications does your company have?
- ISO9001 and Test Report. Also, we could apply for other necessary certifications.
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