Alumina Bubble Castable:
Alumina Bubble Refractory Castable (Alumina hollow ball castable) is a lightweight refractory castable prepared with alumina hollow ball as aggregate and industrial alumina or corundum powder
as powder. The binders used for this type of lightweight refractory castables are mainly CAC (CA-70C, CA-80C) cement, aluminum phosphate, and aluminum sulfate.
The characteristics of Alumina Bubble Castable (alumina hollow ball castables) are high load softening temperature, high strength, and good thermal insulation performance. The operating
temperature is usually between 1600 ºC and 1700 ºC. It is an ideal thermal insulation material for carbon black reaction furnaces and high-temperature special lining durable layers.
Alumina Bubble Castable Physiochemical Indexes：
| Item | Specification | ||
| Low cement bonder | Aluminum sulfate bonder | ||
| Al2O3 % | ≥95 | ≥95 | |
| CaO % | ≤2.5 | / | |
| Bulk Density, g/cm3 | ≤1.6 | ≤1.5 | |
| CCS, MPa | 110℃×24h | ≥7 | ≥5 |
| 1500℃×3h | ≥22 | ≥18 | |
| Thermal Conductivity, W/(m·K) 1000℃ | ≤0.65 | ≤0.76 | |
| Working Temperature, ℃ | ＞1600 | ＞1600 | |
Alumina Bubble Castable Applications:
Alumina Bubble Castable(Alumina hollow ball castable) is very stable in various atmospheres and is an ideal thermal insulation material for high-temperature lining. Especially used in high temperature kilns at 1800 ºC, it can be used as high-temperature insulation filler, and has good effects on various types of thermal furnaces such as inverted flame kilns, shuttle kilns, molybdenum wire furnaces, tungsten rod furnaces, induction furnaces, nitriding furnaces, petrochemical industry gasifiers, carbon black industry reaction furnaces, metallurgical industry induction furnaces, etc., in reducing furnace weight, reforming structures, saving materials, and saving energy.
Why choose us?
1.Abundant Experience. Rongsheng Group have over 20 years experience in the refractory industry and we have a deep understanding of the materials and applications we work with. We can provide expert advice and guidance to help customers find the best solutions for their needs.
2.Quality products. We pride ourselves on providing high-quality refractory products that are made to last. Our materials are carefully sourced and tested to ensure they meet our strict standards.
3.Competitive Price. We offer competitive pricie on all of our products without sacrificing quality and make the products competitive in your market.
4.Customization. We understand that every customer is unique, which is why we offer customized solutions tailored to their specific requirements. Whether it’s a custom shape or size, we can work with customers to create the ideal product for their application.
5.Safety. We take safety seriously and ensure that all of our products meet safety standards. Safty packing, prompt delivery time, and excellent after-sales services.
6.Large stocks. With a large stock of products on hand, we can better serve our customers, save money, and gain a competitive edge in their industry.
7. Overall solutions. We offer optimal and comprehensive solutions to supply the necessary refractory material for your high temperature kiln.
So choosing us is the right choice for you.If you are interested in our products or if you have any question, pls feel free to contact us at any time. We will reply as soon as possible.
