Low Cement Refractory Castable Introduction
Low cement refractory castable as a kind of hot sales refractory castable for furnace application in Rongsheng refractory castable factory manufacturing with widely used in various heat treatment furnaces such as heating furnaces and soaking furnaces and linings of rotary kiln. Low cement castable have good properties of anti-penetration, erosion resistance, impact resistance, wear resistance, good mechanical properties. There are for sale cheap refractory castable low cement in RongSheng fire bricks company can provide refractory castable low cement specification and category as well as competitive price & high grade quality refractory castable products, other specification according to customer requirements, welcome to contact us or email us for free quote or price list.
Low Cement Refractory Castable Definition
Low-cement refractory castables refer to low-cement refractory castables of aluminum silicate, magnesia and siliceous. Among them, the earliest development, the deepest research work and the most widely used are aluminum silicate low cement refractory castables.
Low Cement Refractory Castable Feature
1. Refractory castable low cement has the characteristics of high density, high strength, low porosity, low wear, thermal shock and corrosion. low cement castable good use and significant social and economic benefits.
2. Low content of cement in the low cement castable, so the low calcium content reduces the production of low melting materials in the material, thereby improving the refractoriness, high temperature strength and slag resistance of the product.
3. The water consumption of the mixing is only about one-half of that of the ordinary castable, thereby increasing the compactness of the castable and reducing the porosity.
4.After the molding protection, the generated cement hydrate is small. When heating and baking, there is no large amount of water leakage, which reduces the medium temperature strength, but with the temperature.
4. The degree of refractory castable is increased, the material is gradually sintered, the strength is continuously increased.
Low Cement Refractory Castable Advantage
1. The amount of cement is low, the calcium content in the castable is only 1/4-1/3 of the traditional refractory castable. Therefore, the number of low-melting phases in the refractory low cement castable is reduced, so that the high temperature performance can be significantly improved.
2.The construction water consumption is low, generally 6-7% of the weight of the refractory castable, so castable has a high density and a low porosity.
3.Not only has a higher room temperature curing strength, but the strength after the medium temperature and high temperature treatment does not decrease, the absolute value of the strength is 3-5 times that of the traditional refractory castable.
5. Refractory castable low cement has good volume stability at high temperature. Although refractory castable is not fired refractory material, low cement refractory castable has small volume shrinkage after drying and calcination.
Low Cement Refractory Castable Specification
| Item |
High Alumina Low Cement Refractory Castable |
Corundum Low Cement Castable |
| Brand |
G-15 |
G-16 |
G-17 |
G-18 |
| Max Service temp |
1500 |
1600 |
1650 |
1750 |
| Bulk Density |
2.60 |
2.65 |
3.00 |
3.00 |
| Al2o3 |
75 |
78 |
90 |
93 |
| Sio2 |
20 |
15 |
6 |
1 |
Cold flexural strength(Mpa) |
110℃*4h |
8 |
10 |
13 |
8 |
| 1100℃*3 |
8 |
10 |
13 |
8 |
| 1500℃*3h |
/ |
/ |
15 |
8 |
Cold compressive strength(Mpa) |
110℃*4 |
80 |
100 |
100 |
80 |
| 1100℃*3h |
80 |
100 |
100 |
80 |
| 1500℃*4h |
/ |
/ |
100 |
80 |
| Line change rate after burning(%) |
1100℃*3h |
-0.3~-0.1 |
-0.3~-0.1 |
-0.3~-0.1 |
0.20 |
| 1500℃*4h |
/ |
/ |
-0.5~-0.2 |
0.50 |
Low Cement Refractory Castable Application
1.Refractory castable low cement widely used in power station boilers and other thermal kiln front and rear arches, furnace roof, tail furnace wall and other parts.
2.Refractory castable low cement is suitable for the front kiln mouth of the new dry process cement kiln, the third air duct coal injection nozzle and other parts.
3.Refractory castable low cement can be used as a lining for iron slag tapping, iron tapping tank for iron furnace, integral powder gun for hot metal pretreatment.
4.Clay and high-aluminum low-cement castables for linings in furnaces, soaking furnaces, various heat treatment furnaces and rotary kiln.
Low Cement Refractory Castable Affecting Performance Factors
1.A large amount of water and a large number of structural pores are also a cause. In low cement refractory castables, the amount of water is small, the bulk density is large, the porosity is small, the structure is dense, so the strength of refractory castable is high.
2.The CaO content in the feed is low, that is, the amount of aluminate cement is small,the harmful effect of the crystal phase change of the calcium aluminate mineral at high temperature is small compared with the inherent mildness of the low cement refractory castable. Castable refractory low cement organizational structure has no major impact,the low cement castable refractory no reduction in strength.
3.Adding silica ash to the low-cement refractory castable. When the temperature is higher than 900 °C, it reacts with the alumina in the powder or cement to form mullite, which produces a volume effect and offsets part of the volume shrinkage of the refractory castable. Refractory castable promotes the improvement of strength.
Low Cement Refractory Castable Supplier in RS Castable Manufacturer
1.Rongsheng refractory castable factory has been engaged in refractory material industry for more than 20 years. Rongsheng refractory castable factory have a big technological team, there are more than 15 senior designers for the furnace & kiln. Refractory castable factory are good at different technological field, such as refractory bricks , refractory castable , lightweight insulation firebricks and prefabricated bricks according to client requirement .
2.Rongsheng refractory castable have rich refractory raw materials and 20 years experienced in the refractory bricks manufacturing. Rongsheng refractory castable can provide specification and category as well as competitive price & high-grade quality refractory castable products.
3.Rongsheng refractory castable factory have any certificate according to client requirement,such as ISO9001 certificate, CE.
4.If you worry about the RS refractory bricks factory ,which is not satisfy with your high requirement and remove you doubts, welcome to visit RS refractory castable factory & company, the technologists & designers of the RS firebrick factory waiting for you.
