Description of Low And Ultra-Low Cement Castables

Low and ultra-low Cement Castables have the characteristics of small pore size, large density, good volume stability, high strength and small amount of water. They overcome the characteristics that the strength of ordinary castables decreases significantly at 800~1200 ℃, increase with the increase of temperature, and have excellent thermal shock resistance, slag resistance and corrosion resistance.

Physical and chemical indicators of Low And Ultra-Low Cement Castables:

Item Index
Clay High Alumina Corundum
Al2O3  % ≥45 ≥75 ≥98
CaO  % <1.8 <1.5 <1.0
Bulk density  g/cm3 110℃×24h ≥2.3 ≥2.6 ≥3.1
1350℃×3h ≥2.26 ≥2.61 /
1550℃×3h / / ≥3.00
Cold Crushing Strength  MPa 110℃×24h ≥70 ≥75 ≥85
1350℃×3h ≥85 ≥90 /
1550℃×3h / / ≥100
Flexural Strength MPa 110℃×24h ≥6 ≥8 ≥9
1350℃×3h ≥8 ≥9 /
1550℃×3h / / ≥11
Permanent linear change Rate % 1000℃×3h -0.3 -0.2 -0.2
1350℃×3h ±0.3 ±0.5 /
1550℃×3h / / ±0.5
Maximum service temperature  ℃ 1450 1600 1800


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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.

8.Long-term relationships. We believe in building long-term relationships with our customers based on trust and mutual benefit. We are committed to providing ongoing support and service to ensure customer satisfaction. Rongsheng Refractory can be used in many fields of steel, nonferrous metals, glass, cement, ceramic, petrochemical, machinery, boiler, light, and power industries. What’s more, Industrial distributors, refractory contractors, sales agents, trading companies, and refractory consultants can all benefit from promoting and selling our top-of-the-line refractory products. With a focus on durability, longevity, and performance, our products are designed to exceed your expectations and provide your customers with the best possible results.

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