Low Cement Castable Description
Low cement castables are one kind of refractory castable with a high service temperature of over 1550℃, which uses aluminate cement as its binder, in which the amount of CaO is less than 2.5%. Refractory low cement castable composition mainly consists of refractory aggregate, refractory powder and water. Compared with traditional refractory castable, low cement refractory castable has a series of good performance such as low cement, low porosity, good volume stability and high cold curing-strength. And also low cement castable density is higher than other refractory castables.
Properties of Low Cement Castable
- Low water content.
- High refractoriness,
- High strength.
- Low linear change rate.
- High thermostability.
- Low porosity and High bulk density.
- High temperature strength and slag resistance.
Manufacturing Process of Low Cement Castable
Low cement castable is a castable refractory which is made of ultrafine powder, aluminate cement and some admixtures. Furthermore, the amount of these composite can influence its performance. As for its water amount, given the guaranteed ease of mixing material, adding little water can lower porosity and improve strength. Low cement refractory castable has the advantages of little amount of water, high density and high strength, which is the reason that this refractory material is widely used in many field and various furnaces and kilns.
Advantages of Low Cement Castable
High Refractory Temperature and Strength and High Anti – Slag Corrosion Resistance.
Low Porosity and High Bulk Density. During the construction process, only 1/3~1/2 amount of water for traditional castable will be added into it.
Increasing Strength With The Improving Temperature of Heat Treatment After Casting Into Shape: With proper adjustment of the castable size, it can be mixed into self-flow castable and pumped pouring material.
Rongsheng Refractory Low Cement Castable Specifications
| Item/Index | M | A1 | A2 |
| Chemical component | 65 | 80 | 90 |
| Aggregate | Mullite | Corundum | Corundum |
| Maximum service temperature | 1600 | 1700 | 1800 |
| Refractorinee | 1750 | 1790 | 1790 |
| Bulk density | 2.6 | 2.8 | 3.0 |
| Linear change after sintered | |||
| 1000℃ | -0.2 | -0.2 | -0.2 |
| 1300℃ | ±0.5 | ±0.5 | ±0.5 |
| Pressure strength after sintered | |||
| 110*24h | 30 | 30 | 30 |
| 1000*3h | 50 | 50 | 50 |
| 1400*3h | 70 | 80 | 80 |
Application of Low Cement Castable
Low cement insulation castable is widely used in many industries such as metallurgical industry, petrochemical industry, power plant, construction field and other industries. And also Low cement refractory castable can be used for furnaces and boilers in different areas according to various composition. For instance, clay and high alumina low cement refractory castable can both be used on the linings of heat furnace, soaking furnace and other heat treatment furnaces.
Low Cement Castable Manufacturer from RS Refractory Factory
RS refractory factory is a professional low cement insulation castable supplier that established in the early 90s of twenty century. RS refractory factory has specialized in low cement castables for more than 20 years. if you have some demand of refractory low cement castable, or have some questions on refractory low cement castable about physical and chemical indicators, please contact us for free. and Rs refractory factory as a professional low cement refractory castable manufacturer in china, has some competitive advantages as follows:
- Competitive Price: Make the products competitive in your market,
- Abundant Experience: Prevent cracks and twist in bricks,
- Different Moulds: Save mould fees for you,
- Strict Quality Control: Meet clients’ quality requirement,
- Large stocks: Guarantee prompt delivery,
- Professional Packing: Avoid damage and secure the goods in transportation.