Definition. Refractory castables made of high-aluminum raw materials as aggregates and powders, and adding binders. It has high mechanical strength and good thermal shock resistance and abrasion resistance. It is mainly used as the lining of boilers, blast furnaces, heating furnaces, ceramic kilns and other kilns. 60 refractory castable, GL60 high aluminum refractory castable, boiler hot blast stove refractory castable.
GL60 High Aluminum Refractory Castable
High-aluminum castables are synthesized from high-aluminum refractory aggregates, powders, binders and admixtures in proportions. It has good high temperature performance and high compressive strength. High refractory temperature, wear resistance and other characteristics. It is widely used in hardware, smelting, chemical industry, non-ferrous metals and other industries. It is particularly prominent in the steel industry and is mainly used in the front kiln mouth, decomposition furnace, kiln head cover and other parts of the rotary kiln. High-aluminum castables are divided into conventional high-aluminum refractory castables and high-strength high-aluminum refractory castables.
High-aluminum castables use high-alumina bauxite clinker as aggregate and powder. Refractory castable prepared by adding binder and dispersant. The integral lining material (refractory precast shapes) can be poured directly, or it can be poured into refractory precast shapes for splicing.
The product packaging of high-aluminum refractory castables can be packed in woven bags of 25kg/bag or 50kg/bag according to user needs. Then it is packed in tons of bags and delivered to the user’s location.
High Strength High Aluminum Castable Introduction
High-strength High-alumina Castable (High-strength High-alumina Castable) is a refractory castable with aluminate cement as the binding agent and high-aluminum aggregate and micro-powder (such as α-Al2O3 micro-powder, etc.) as the main raw materials. High-strength and high-aluminum castables have high compressive strength, flexural strength and thermal shock resistance. Can maintain good stability in high temperature environment.
Characteristics of High-Strength High-Aluminum Castables
- Excellent high temperature performance. High-strength high-aluminum castables have excellent high-temperature properties due to the high refractoriness of high-aluminum aggregates and high-alumina cement. Can be used in environments up to 1000°C.
- High intensity. High-strength and high-aluminum castables have high compressive strength and flexural strength, and can maintain stable structural performance under various complex working conditions.
- Good thermal shock resistance. Since the aggregates and micropowder selected in high-strength and high-aluminum castables have low thermal expansion coefficients, they have good thermal shock resistance. Suitable for use in high temperature equipment.
- Resistant to chemical erosion. High-strength and high-aluminum castables have good acid, alkali, salt and corrosion resistance. It is suitable for situations where chemical corrosion may occur in chemical, petroleum and other industries.
- Construction performance. High-strength and high-aluminum castables have good construction performance and can be constructed by pouring, spraying, troweling and other methods. High construction efficiency.
High-strength and high-aluminum castables are widely used in various industrial furnaces and equipment in metallurgy, petrochemical, building materials, electric power and other industries. Such as steel furnaces, petrochemical furnaces, cement kilns, glass melting furnaces, waste heat power generation equipment, etc. When using high-strength and high-aluminum castables, appropriate formulas and construction methods should be selected according to specific working conditions and requirements. to ensure its performance and service life.
How to Choose High Aluminum Refractory Castables?
High-aluminum refractory castable is a refractory material used for high-temperature furnace linings. Many factors need to be considered in its selection.
- First of all, the appropriate type and formula of refractory materials must be selected based on factors such as furnace temperature, atmosphere, and chemical aggressiveness.
- Secondly, factors such as the density, porosity, and thermal conductivity of the castable should be considered. To ensure uniform temperature distribution in the furnace and improve thermal efficiency.
- Finally, the appropriate castable appearance and shape should be selected according to the use environment, such as granular, powdery, block, etc.
In addition, when selecting high-aluminum refractory castables, the relationship with furnace lining materials, construction methods, etc. must also be considered. To ensure the integrity and durability of the entire furnace lining system.
In short, the selection of high-aluminum refractory castables is a complex and rigorous process, and the selection needs to be based on specific circumstances and needs.
Unshaped Refractory Materials 