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Get PriceThe aluminum content of high alumina refractory castable is about 50%-80%. In powder or sand form. By mixing in a certain proportion, aluminum castable can be processed into any shape. Due to its excellent properties, Kerui castable are often used in a variety of high-temperature fields.
Al2O3% (≥)
Bulk Density (g/cm³)
Cold Crushing Strength (MPa)
Refractoriness (℃)
High alumina castable is also known as calcium clinker. It is made of industrial alumina powder and selected limestone powder as raw materials. The alumina conventional castables is produced under rotating high temperatures and ground into a powder.
As we can know from the name of product, alumina castable contains more Al2O3 than other kinds of refractory castable. Therefore, it brings higher refractoriness and many excellent performances. Commonly, Kerui delivers these products in a dry form in bags. It has extensive application in industrial applications where high heat, wear and corrosion resistance are required.
| Item/Grade | GLJ-50 | GLJ-60 | GLJ-65 | GLJ-70 | GLJ-80 | |
|---|---|---|---|---|---|---|
| ω (Al2O3) ≥/% | 50 | 60 | 65 | 70 | 80 | |
| Refractoriness ≥/℃ | 1700 | 1720 | 1720 | 1720 | 1780 | |
| Bulk Density ≥/ (g/cm³) | 110℃*24h | 2.15 | 2.30 | 2.40 | 2.45 | 2.65 |
| Cold Modulus of Rupture ≥/MPa | 4.0 | 5.0 | 6.0 | 6.0 | 7.0 | |
| Cold Crushing Strength ≥/Mpa | 25 | 30 | 35 | 35 | 40 | |
| Permanent Linear Change (T/℃*3h)/% | ±0.8 (1350℃) | ±0.8 (1400℃) | ±0.8 (1500℃) | |||
The calcium content in Kerui high aluminum castable is only one-fourth that of conventional refractory castable. As a result, the product has lower levels of low-melting phases and significantly improved capabilities. In addition, the water consumption and calcium sulphoaluminate cement during the construction of high-aluminum castable is less, which can save about 6%-7% cost.
In applications such as rotary kilns used in cement production, alumina castable can contribute to optimized combustion processes. Proper lining materials can ensure uniform heat distribution and retention, leading to efficient fuel combustion. This optimization minimizes energy wastage and enhances the overall energy efficiency of the process.
It is worth mentioning that the mechanical strength of Kerui high-aluminum castable is 3-5 times that of traditional castable. This also determines that the strength of this product will not change when facing harsh construction environments. In addition, Kerui engineers will provide professional construction guidance to extend the service life of the large refractory bricks and kiln.
Different industries: due to excellent properties, the alumina refractory castable is popular in ferrous industry, non-ferrous industry, industrial furnaces and kilns, power station and many other industries.
Different parts: high-aluminum refractory castables are suitable for heating furnaces, soaking furnaces, heat treatment furnaces, rotary kilns, refining equipment outside molten steel furnaces, cracking reactors, blast furnaces, tap chutes, various high-temperature burners for heating furnace water, etc.
With high standard on product quality, Kerui high alumina refractory castable has ISO, CE, SGS and many other international certificates. Besides, Kerui is high recognized by local government as well as the refractory industry. You can know more information about Kerui certificates here.
As an original alumina refractory castable manufacturer in China, Kerui has strong design and production ability. Therefore, you can contact Kerui to customized the chemical composition, package method, physical composition and many other aspects. Moreover, this makes Kerui outstanding.
There are more than 20 professional engineers in Kerui Refractory. They have rich project experience as well as professional industry knowledge. Customers are available to get guidance from experts. Moreover, Kerui engineers are ready to provide both online service and on-site service.
Founded in 2004, Kerui is specialized in refractory industry for almost 20 years. Correspondingly, we have a strong design and production ability. Even the customized refractory castable can be finished within about 7 days. Moreover, Kerui supports to export the alumina castable to worldwide.
The annual output of Kerui monolithic refractory product is more than 50,000 tons. Even during high demand periods, Kerui maintains a robust inventory and production capacity to meet the needs of their customers promptly. That’s also why so many customers choose Kerui as their castable and firebrick manufacturer.
The quality of alumina castable starts with the raw materials. Kerui, like other companies, likely has strict standards for the alumina and other materials used in their castable. Besides, regular inspection and testing of these raw materials ensure consistency and quality.
Kerui adopts a fully automated batching system as well as a strong mixing machine to ensure the precise ratio of high alumina castable. Therefore, the curing processes help maintain uniformity in the composition and properties of the castable products. Automation minimizes human error and reduces variability in the manufacturing process.
There is a quality control system in Kerui Refractory Group. This system includes regular inspections, in-process quality checks, and final product testing. Quality control measures involve various tests such as density, porosity, strength, thermal conductivity, and chemical composition analysis.
If any issues with the quality of the alumina castable are identified, a feedback loop should exist to analyze the problem, implement corrective actions and prevent similar issues from arising in the future. Therefore, Kerui continues to improve the quality of product and service.
As a crucial refractory product in high temperature applications, we sincerely recommend the high alumina refractory castable to you. This product can not only promote your business but also bring more benefits. Welcome to contact Kerui or follow Kerui Youtube for more related information!