Product Introduction
Refractory mortar is soft clay, which is a refractory clay with plasticity. Fireclay mortar is made by mixing clay clinker powder above 160 mesh, soft clay powder and binder evenly.
Product Advantage
Refractory mortar becomes a paste when added with water and can be made into various shapes. It is mainly used as a joint material for the construction of fireclay bricks for various kilns. It has the advantages of good air tightness, high bonding strength and suitable construction time.
Product Data
| Items | NN-30 | NN-38 | NN-42 | NN-45 | NN-45P | |||
| Al2O3 % ≥ | 30 | 38 | 42 | 45 | 45 | |||
| Refractoriness ℃ ≥ | 1620 | 1680 | 1700 | 1720 | 1720 | |||
| Bonding strength Mpa | 110℃ dry ≥ | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | ||
| 1200℃×3hheating ≥ | 3.0 | 3.0 | 3.0 | 3.0 | 6.0 | |||
| Refractoriness under load 0.2Mpa ℃ ≥ | / | / | / | / | 1200 | |||
| Permanent linear change % | 1200℃×3h heating | -3 ~ +1 | ||||||
| Setting time min | 1-3 | |||||||
| Grain szie | <1.0mm | 100 | ||||||
| >0.5mm | 2 | |||||||
| <0.073mm | 50 | |||||||
Application Field
Fireclay mortar is applied between fireclay bricks. The bonding time is within 2 minutes. If the aluminum content of the refractory bricks is high, the fireclay mortar used for bricklaying should also be increased accordingly.