Introduction of Refractory Mortar
Refractory mortar, also known as fire clay or joint filler. It is a kind of joint material for refractory bricking-up. AGRM is a professional refractory mortar manufacture in China, producing and marketing a range of refractory mortar such as high alumina mortar, fire clay mortar, etc. welcome to contact us.
High Alumina Mortar
Introduction of High Alumina Mortar
High alumina mortar is a kind of mortar refractory mainly made from alumina clinker with soft clay or some chemical binder. Al2O3 content of high alumina mortar is different based on bricking-up composition and operation requirement.
Features of High Alumina Mortar
- High refractoriness.
- Good cohesiveness.
- Good corrosion resistance.
- Good plasticity.
- High compressive strength.
- Good wear resistance.
- Good spalling resistance.
Performance Index of High Alumina Mortar
| Item | index | ||||||||
| LN-55A | LN-55B | LN-65A | LN-65B | LN-75A | LN-75B | LN-85B | GN-85B | ||
| refractoriness,℃not less than | 1770 | 1770 | 1790 | 1790 | 1790 | 1790 | 1790 | 1790 | |
| Al2O3,% not less than | 55 | 55 | 65 | 65 | 75 | 75 | 85 | 85 | |
| Cold bending resistance andcohesive strength not less than | 110℃after drying | 1 | 2 | 1 | 2 | 1 | 2 | 2 | 2 |
| 1400℃×3hAfter burning | 4 | 6 | 4 | 6 | 4 | 6 | – | – | |
| 1500℃×3h fter burning | – | 6 | 6 | ||||||
| 0.2MParefractoriness under load,℃T2.0 not less than | – | 1300 | – | 1400 | – | 1400 | – | 1650 | |
| linear change rate,% | 1400℃×3hAfter burning | +1～-5 | – | ||||||
| 1500℃×3hAfter burning | – | +1～-5 | |||||||
| cohesive time,min | 1~3 | ||||||||
| granularity,% | -1.0mm | 100 | |||||||
| +0.5mm not more than | 2 | ||||||||
| -0.074mmnot less than | 50 | 40 | |||||||
Fire Clay Mortar
Fire clay mortar is a type of refractory material mainly made of clay and fine stone powder. Fire clay mortar is mainly used as the joints and coating materials in building refractory bricks.
Features of Fire Clay Mortar
- High strength.
- Excellent performance.
- Low drying and baking shrinkage.
- High refractory capacity.
- High bonding strength.
Application of Refractory Mortar
It is mainly used for repairing and sealing of refractory structures such as high temperature furnaces, ovens, chimneys, stoves and fireplaces, as well as laying fire bricks.
