$High Aluminum Insulating Castable Refractory For High-temperature Industrial Kilns$

High Aluminum Insulating Castable Refractory For High-temperature Industrial Kilns

80% Alumina 60 Mesh Calcined Bauxite with Low Price

70% Alumina 200 Mesh Calcined Bauxite with Low Price

$High Grade Refractory Material/ Zircon Sand and Zircon Powder$

High Grade Refractory Material/ Zircon Sand and Zircon Powder

83% Alumina 120 Mesh Calcined Bauxite with Low Price

Ceramic Fiber Blanket CMAX

Calcined Bauxite Clinker-Rotary Kiln Bauxite of CNBM in China

Factory Directly 85% Al2O3 1-3mm Calcined Bauxite

$Calcined Magnesite Refractory Powder$

Calcined Magnesite Refractory Powder

$Zircon Sand and Zircon Powder High Performafce for Refractory Use$

Zircon Sand and Zircon Powder High Performafce for Refractory Use

$High Alumina Refractory Castable For Blast Furnace$

High Alumina Refractory Castable For Blast Furnace

Brown Fused Alumina

Rotary Kiln Bauxite 85. Homogenized Bauxite 88

$High aluminum clay refractory mortar with Low porosity$

High aluminum clay refractory mortar with Low porosity

97 Silicon Carbide90/Recrystallized Silicon Carbide/SIC

09 Cu steel special CCM mold protect slag

BROWN FUSED ALUMINA FOR REFRACTORY PRODUCTS

CALCINED BAUXITE WITH SHAFT KILN BAUXITE

$Refractory High Density Silica Brick 95B$

Refractory High Density Silica Brick 95B

Q & A

What are the advantages of using calcium aluminate aggregates in the development of refractory castables?

There are several advantages of using calcium aluminate aggregates in the development of refractory castables. Firstly, calcium aluminate aggregates have excellent high-temperature stability, allowing the castables to withstand extreme temperatures without losing their structural integrity. This is crucial for applications in industries such as steel, cement, and petrochemical, where refractory materials are exposed to intense heat. Secondly, calcium aluminate aggregates have a low thermal conductivity, meaning they are efficient at insulating against heat transfer. This property helps to reduce energy consumption and improve the overall efficiency of the refractory castables. Additionally, calcium aluminate aggregates have good resistance to molten metals and slag, making them suitable for use in applications where contact with these substances is common. This resistance helps to prolong the lifespan of the refractory castables, reducing maintenance costs and downtime. Lastly, calcium aluminate aggregates have a good bonding ability with other refractory materials, allowing for the development of strong and durable castables. This ensures that the castables maintain their shape and structure during operation, even under harsh conditions. Overall, the advantages of using calcium aluminate aggregates in refractory castables include high-temperature stability, low thermal conductivity, resistance to molten metals and slag, and strong bonding ability, making them a preferred choice for various industrial applications.

Explain the significance of periclase in refractories.

Periclase is a key ingredient in refractories because of its exceptional high-temperature stability and resistance to corrosion. It helps to improve the strength and durability of refractory materials, making them suitable for use in high-temperature environments such as furnaces, kilns, and reactors. Its presence also enhances the thermal shock resistance of refractories, preventing cracks and damage caused by rapid temperature changes. Overall, periclase plays a crucial role in ensuring the effective and efficient performance of refractories in various industrial applications.

How is zirconia obtained and processed for refractory use?

Zirconia is primarily obtained through the extraction of zirconium silicate minerals, which are then processed using various techniques such as crushing, grinding, and refining to obtain pure zirconia powder. This powder is then mixed with other additives and binders to form a moldable or castable refractory material. After shaping, the material undergoes a firing process called sintering, where it is heated to high temperatures to achieve the desired strength and density, resulting in a refractory product suitable for various industrial applications.

Which refractory raw materials have good thermal conductivity?

Refractory raw materials with good thermal conductivity include graphite, silicon carbide, and alumina.

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