Description of Refractory Plastic Castable
Refractory plastic castable is made of granular, powdery materials, polymer clay and other binders and plasticizers, with a small amount of water added. After sufficient stirring, it forms a solid mud-like paste. The unformed refractory material maintains high plasticity for a long time. It has excellent wear resistance, excellent adhesion, and high working temperature (not less than 1600℃).
Classification of refractory plastics castable
According to the type of refractory aggregate, it can be divided into clay, high-aluminum, mullite, corundum, chromium, silicon carbide and zirconium-containing refractory plastics. According to the type of binder, refractory plastics can be divided into aluminum sulfate, phosphoric acid, phosphate, water glass and combined resin. Since this type of non-volatile refractory material is mainly used in various heating furnaces that do not directly contact the molten material, clay clinker and high-aluminum clinker are generally used, and lightweight granular materials are generally used to prepare lightweight plastics.
Physical and chemical indicators of refractory plastics
| Name of indicator | Norma |
|---|---|
| Огнеупорность, оС, не менее | 1700 |
| Массовая доля: | |
| Al2O3, %, в пределах | 37 - 80 |
| CaO, %, | Факультативно |
| Влаги, %, в пределах | 9-17 |
| Зерновой состав, мм | 0 - 6 |
| Плотность кг/см3 в пределах: | |
| Брикета | 1,8 - 2,4 |
| После спекания | 1,4 - 2,4 |
| Усадка, %, в пределах | 0,8 – 2,1 |
| Прочность Мпа, в пределах | 35 - 75 |
| Вес брикета, кг., не более | 10,0 |
| Размера брикета, мм | 150*100*250 |
| Гарантийный срок хранения брикета, суток, не более | 30 |
Advantages of refractory plastic mass
Refractoriness
The main advantage of refractory plastics is that they can withstand high temperatures without being destroyed. They have fire-resistant properties, stop the spread of fire, protect structures, and prevent fires from happening.
Plasticity and ease of use
The refractory plastic mass has a plastic consistency, which makes it easy to apply and model on the surface. It can be easily deformed, formed and molded into the desired shape, which makes it convenient to use and adaptable to various structures.
Good adhesion
The fire-resistant plastic mass has good adhesion to various surfaces, including steel, concrete, brick and other fire-resistant materials. It is securely attached to the substrate and forms a strong connection, providing reliable protection from fire and high temperatures.
tightness
Refractory plastics can be used to fill cracks and create airtight connections between refractory elements. It provides a reliable seal and prevents the penetration of fire, gas and air, which is very important for the safety and efficiency of the system.
Resistance to chemical attack
Fire-resistant plastic is chemically resistant and can withstand the effects of a wide range of chemicals. This makes it suitable for use in the chemical industry where the surface may be exposed to corrosive environments.
Application of refractory plastic mass
Industrial furnaces and kilns
In industry, refractory plastic mass is used for lining industrial furnaces, ovens, furnaces and other equipment operating at high temperatures. It provides fireproof protection and prevents damage from high temperatures and chemical exposure.
Metallurgy and foundry industry
Refractory plastic mass is used in the metallurgical industry for lining furnaces and kilns, as well as for creating molds and patterns for casting metal products. It provides refractory insulation and protection at high temperatures.
Chemical industry
In the chemical industry, refractory plastic mass is used to create refractory coatings on reactors, columns, tanks and other equipment. It prevents damage from chemically aggressive substances and high temperatures.
Steam generating units
Refractory plastics are used for lining steam boilers, pipelines and other equipment in the energy industry. They provide fire protection and prevent damage caused by high temperatures and steam.
Filling gaps and sealing joints
Refractory plastic mass is used to seal and fill gaps between refractory materials, create sealed connections and prevent the penetration of fire, gases and air.
Repair of fireproof structures
Refractory plastic mass is used for repair and restoration of refractory surfaces damaged as a result of wear, destruction or operating conditions.
