High Alumina Refractory Mortar
Application Industry: Refractories for Steel and High Temperature Kiln Industries
Application Equipment: Masonry Jointing of High Alumina Bricks
Size: Custom high alumina refractory mortar grade per masonry jointing design (free engineering on request)
Products Overview
Our High Alumina Refractory Mortar is a high-performance refractory product engineered for masonry jointing of high alumina bricks in steel industry and high temperature kiln industry. The product family is manufactured from high-purity high alumina raw materials with plasticity characteristics. The product family features high refractoriness, excellent bonding strength, and good thermal stability for masonry jointing of high alumina bricks, suitable for high-demand masonry service in metallurgical operations.
The High Alumina Refractory Mortar product family is offered in three engineering-proven LN chemistry grades. The CH-LN55 grade features Al2O3 content minimum 55% and Refractoriness minimum 1770 °C for general high alumina brick masonry service. The CH-LN65 grade features Al2O3 content minimum 65% and Refractoriness minimum 1770 °C for higher-demand high alumina brick masonry service. The CH-LN75 grade features Al2O3 content minimum 75% and Refractoriness minimum 1790 °C for highest-demand high alumina brick masonry service. All three grades deliver Modulus of Rupture minimum 1 MPa after 110 °C drying for 24 hours and minimum 5 MPa after firing, with Application Temperature 1400 °C, and Bonding Time 1 to 3 minutes for CH-LN75 grade.
Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each High Alumina Refractory Mortar grade is engineered to ASTM, GB/T, and ISO refractory standards. For an overview of the broader catalogue, see the Refractories for Steel Industry category, or contact our technical sales team for a free consultation against your refractory drawing.
Product Features
Features:
- Manufactured from high-purity high alumina raw materials with plasticity characteristics for high alumina brick masonry service
- Engineering-proven high refractoriness, excellent bonding strength, and good thermal stability for masonry jointing service
- Three LN chemistry grades covering Al2O3 content 55%-75% for matching different high alumina brick masonry requirements
- Refractoriness minimum 1770 to 1790 °C for matching different masonry jointing temperature requirements
- Application Temperature 1400 °C for high-demand masonry service in steel industry and high temperature kiln industry
Product Specification
Refractory clay mortar is referred to as soft clay. It is a refractory clay with plasticity. The constituent minerals are mainly kaolinite, kaolinite, and hydromica. Generally, it contains Al2O3 ≥ 22% ~ 30%, SiO2 ≥ 42% ~ 73%, and the refractoriness is 1580 ~ 1670 °C. The refractory clay foam is softened in water and can be made into various shapes after water, and is a raw material for making a refractory material, as a binder and in a hard refractory clay. According to the chemical composition (useful components, harmful components), physical properties (refractory degree, plasticity, loss on ignition, etc.) of soft refractory clay, it can be divided into three grades: I, II, and III. Suitable for masonry clay bricks and high alumina bricks.
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Brands
Items
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CH-NN38 | CH-NN42 | CH-NN45 | CH-LN55 | CH-LN65 | CH-LN75 | |
|---|---|---|---|---|---|---|---|
| Al2O3 (%) ≥ | 38 | 42 | 45 | 55 | 65 | 75 | |
| Refractoriness (°C) ≥ | 1630 | 1690 | 1710 | 1770 | 1770 | 1790 | |
| Flexural strength (MPa) ≥ | 110°C × 24h | 1 | 1 | 1 | 1 | 1 | – |
| °C × 3h | 1200 3 |
1200 3 |
1200 3 |
1400 5 |
1400 5 |
1400 5 |
|
| Bonding time (min) | 1~3 | ||||||
Note: Four performance parameters specified per PDF source: Al2O3 content, Refractoriness, Flexural strength, and Bonding time. Six NN and LN chemistry grades engineered for masonry clay bricks and high alumina bricks. For project-specific chemistry and grade, contact CH Refractories engineering.
Product Applications
High Alumina Refractory Mortar is a high-performance refractory product manufactured from high-purity high alumina raw materials with plasticity characteristics, engineered for masonry jointing of high alumina bricks in steel industry and high temperature kiln industry. The product family features high refractoriness, excellent bonding strength, and good thermal stability for masonry jointing of high alumina bricks, suitable for high-demand masonry service in metallurgical operations.
Application Industry: Refractories for Steel Industry and High Temperature Kiln Industry.
Target Equipment: Masonry Jointing of High Alumina Bricks of small, medium-size, and large industrial furnace linings in metallurgical operations.
Specific Application Zones: The CH-LN55 grade (Al2O3 content minimum 55%, Refractoriness minimum 1770 °C) is the standard variant for general high alumina brick masonry service with Application Temperature 1400 °C. The CH-LN65 grade (Al2O3 content minimum 65%, Refractoriness minimum 1770 °C) is the higher-demand variant for high alumina brick masonry service with Application Temperature 1400 °C. The CH-LN75 grade (Al2O3 content minimum 75%, Refractoriness minimum 1790 °C) is the highest-demand variant for high alumina brick masonry service with Application Temperature 1400 °C and Bonding Time 1 to 3 minutes.
CH Refractories is a High Alumina Refractory Mortar manufacturer in China, Henan, Zhengzhou. The complete High Alumina Refractory Mortar product family is manufactured in our Xinmi City, Zhengzhou, Henan, China facility to ASTM, GB/T, and ISO refractory standards. Each batch is supported by free consultation, on-site technical support, and a dedicated engineering team serving Refractories for Steel Industry and High Temperature Kiln Industry customers across the global metallurgical value chain.
