Zirconia Hollow Sphere Castable

Zirconia Hollow Sphere Castable Introduction
 
Zirconia hollow sphere castable as a kind of hot sales refractory castable for furnace application in Rongsheng kiln refractory factory manufacturing with Vacuum furnace, molybdenum wire furnace, gas furnace, medium and high frequency electric furnace, single crystal furnace. Refractoy castable have good properties of high temperature resistance, chemical resistance, oxidation resistance, wear resistance and large thermal expansion coefficient. There are for sale cheap refractory castable in RongSheng  refractory material manufacturer can provide fireproof castable specification and category as well as competitive price & high grade quality, other specification according to customer requirements, welcome to contact us or email us for free quote or price list.
Zirconia Hollow Sphere Castable Definition
 
The refractory zirconia hollow sphere castable mainly relies on the pores of the hollow ball refractory raw material and the pores in the refractory product matrix to obtain higher thermal resistance. When the porosity of the refractory castable product is constant, the more dispersed the pores inside the product, the smaller the pore diameter, the greater the convective heat transfer resistance inside the pore, meanwhile, according to the scattering principle, the resistance of phonon heat conduction and photon heat conduction is increased, the radiation heat transfer is reduced.
 
Zirconia Hollow Sphere Castable Features
 
1.Zirconia hollow ball refractory castable is a refractory material with high temperature resistance and excellent energy saving, and is very stable in high temperature atmosphere.
 
2.Zirconia hollow sphere castable refractory has high temperature resistance, chemical corrosion resistance, oxidation resistance, wear resistance and large thermal expansion coefficient. Stabilized zirconia refractory castyable has become an important material that cannot be ignored in the refractory industry and special ceramics fields.
 
3.Zirconia hollow ball castable refractory is a new heat insulating material with high temperature resistance, high strength and stable pore structure.
 
Zirconia Hollow Sphere Castable Specification
 

 
Zirconia Hollow Sphere Castable Application
 
1.Castable zirconia hollow sphere can be used as vacuum furnace, molybdenum wire furnace, gas furnace, medium and high frequency electric furnace, single crystal furnace and other high temperature furnace lining materials.
 
2.Zirconia hollow sphere refractory castable used in the metallurgical industry as a separation ring for sizing nozzles and horizontal continuous casting for continuous casting.
 
3.In the single crystal furnace, a heat shield and a lining can be made of the fireproof castable zirconia hollow sphere.
 
4.Castable zirconia hollow sphere refractory used for high temperature furnaces above 1750 °C or high temperature kiln and kiln furniture.
 
5.Zirconia hollow sphere castable is a refractory material with high temperature resistance and excellent energy saving, castable refractory is very stable in high temperature atmosphere. Especially castable zirconia hollow sphere suitable for high temperature kiln at 1600-2400℃
 
Zirconia Hollow Sphere Castable Manufacturing Process
 
1.The size of conventional pores is reduced by using hollow spheres refractory material with a small critical particle size (3 mm). At the same time, the micropores are introduced by introducing the organic substance DX into the matrix. In addition, through the formulation design, the phase composition of therefractory product has an "impurity effect" to further improve the thermal resistance of the product.
 
2.Since the hollow sphere itself has a low strength, refractory castable is easy to wear the hollow sphere when the crack spreads to the hollow sphere and continue to extend. To this end, slab corundum particles with a critical particle size of 3 mm were added to the ingredients to enhance the toughness of the product; in addition, the expansion effect of in-situ formation of the optimum content of CA6 was used to produce an appropriate amount of microcracks to improve the toughness of the product.
 
3.In terms of strength with refractory castable, the chemical strength and sintering of cement and fine powder are used to obtain the required strength by rational compounding.
 
Zirconia Hollow Sphere Castable Physical Properties
 
With the increase of the amount of hollow spheres added, the bulk density of the refractory castable zirconia hollow sphere after baking and after burning is greatly reduced, and the strength after baking is also greatly reduced, but the strength change after burning tends to be gentle. This is because the strength of the sample after baking depends on the physical bonding strength of the binder to the hollow sphere rtefractory castable and the fine powder. The proportion of the hollow sphere is large, that is, the physical bonding layer of the sphere and the fine powder is weak, and thus the strength increases with the proportion of the fireproof hollow sphere castable. A sharp decline. After the sample is burned at 1780 ° C for 8 h, the strength depends mainly on the sintering of the matrix, the matrix structure. In the case where the composition of the castable base material is substantially the same, the microstructure of the matrix after the high temperature burning is substantially the same, so the strength tends to be gentle with the proportion of the refractory castable hollow sphere. Therefore, in order to obtain a hollow sphere castable having a bulk density of less than 2.8 g•cm3 and a compressive strength of more than 40 MPa, when the natural bulk density of the zirconia hollow sphere refractory is 1.8 to 2.5 g•cm3, the hollow sphere refractory castable, the amount added is preferably from 60% to 70%.
 
Zirconia Hollow Sphere Castable Supplier in RS Refractory Castable Factory
 
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
 
Main products as follow
 
1)Various industrial furnace series refractories
 
High-alumina brick, anchor brick, clay brick, lightweight insulation brick, high-strength diatomaceous earth brick, low-iron mullite brick, silica brick
 
2)Heat storage balls for various industrial furnace regenerators
 
Special corundum heat storage balls, honeycomb, regenerator block, tapping chute brick,Anti-stripping high-alumina bricks for cement industry, alkali-resistant bricks, phosphate bricks, etc.
 
3)Industrial furnace and power generation boiler industry with various brands of wear-resistant bricks, corundum brick, mullite bricks and other stereotypes.
 
4)Wear-resistant castables, corundum castables, low-cement high-strength castables, impervious materials, self-flowing materials, plastics, and other unshaped refractories.
 
Products exported to the United States, India, Japan. South Korea, Pakistan and other countries