Refractory Clay for Steel Industries and High Temperature Kiln Industries
Application Industry: Refractories for Steel and High Temperature Kiln Industries
Application Equipment: Masonry Jointing of Clay Bricks and High Alumina Bricks
Size: Custom refractory clay grade per masonry jointing design (free engineering on request)
Products Overview
Our Refractory Clay is a high-performance refractory product engineered for masonry jointing of clay bricks and high alumina bricks. The product family is referred to as soft clay with plasticity, manufactured from high-quality refractory clay materials with plasticity characteristics. The constituent minerals are mainly kaolinite, kaolinite, and hydromica. The product family features certain adhesion, low rebound rate, and good bonding strength for refractory brick masonry service, suitable for masonry clay bricks and high alumina bricks.
The Refractory Clay product family is offered in six engineering-proven NN and LN chemistry grades. The CH-NN38 grade features Al2O3 content minimum 38% and Refractoriness minimum 1630 °C for general clay brick masonry service. The CH-NN42 grade features Al2O3 content minimum 42% and Refractoriness minimum 1690 °C for higher-demand clay brick masonry service. The CH-NN45 grade features Al2O3 content minimum 45% and Refractoriness minimum 1710 °C for high-demand masonry service. The CH-LN55 grade features Al2O3 content minimum 55% and Refractoriness minimum 1770 °C for higher-demand masonry service. The CH-LN65 grade features Al2O3 content minimum 65% and Refractoriness minimum 1770 °C for high-demand masonry service. The CH-LN75 grade features Al2O3 content minimum 75% and Refractoriness minimum 1790 °C for highest-demand masonry service. All six grades deliver Modulus of Rupture minimum 1 MPa after 110 °C drying for 24 hours, with Application Temperature 1200 to 1400 °C depending on grade.
Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each Refractory Clay 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-quality refractory clay materials with plasticity characteristics for masonry jointing service
- Engineering-proven certain adhesion, low rebound rate, and good bonding strength for refractory brick masonry service
- Six NN and LN chemistry grades covering Al2O3 content 38%-75% for matching different masonry jointing requirements
- Bulk Density minimum 2.0 to 2.8 g/cm3 depending on grade with Application Temperature 1200 to 1400 °C
- Refractoriness minimum 1630 to 1790 °C for matching different masonry jointing temperature requirements
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
Refractory Clay is a high-performance refractory product manufactured from high-quality refractory clay materials with plasticity characteristics, engineered for masonry jointing of clay bricks and high alumina bricks. The product family features certain adhesion, low rebound rate, and good bonding strength for refractory brick masonry service, suitable for masonry clay bricks and high alumina bricks in steel industry and high temperature kiln industry service.
Application Industry: Refractories for Steel Industry and High Temperature Kiln Industry.
Target Equipment: Masonry Jointing of Clay Bricks and High Alumina Bricks of small, medium-size, and large industrial furnace linings in metallurgical operations.
Specific Application Zones: The CH-NN38, CH-NN42, and CH-NN45 grades (Al2O3 content minimum 38%-45%, Refractoriness minimum 1630 to 1710 °C) are the standard variants for clay brick masonry service with Application Temperature 1200 °C. The CH-LN55, CH-LN65, and CH-LN75 grades (Al2O3 content minimum 55%-75%, Refractoriness minimum 1770 to 1790 °C) are the higher-demand variants for high alumina brick masonry service with Application Temperature 1400 °C. All six grades deliver Modulus of Rupture minimum 1 MPa after 110 °C curing for 24 hours.
CH Refractories is a Refractory Clay manufacturer in China, Henan, Zhengzhou. The complete Refractory Clay 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.
