Topower Refractory castables For Sale ,Customer In Korea Ordered 20 Tons
Alkali-resistant refractory castable is a refractory castable that can resist the corrosion of metal oxides. It is mainly composed of refractory aggregate, binder, additives (such as alkali-resistant agent, microsilica powder, waterproofing agent, plasticizer, etc.) and necessary water or other solvents. These components are precisely proportioned and mixed to form a high-performance composite material.
According to the different porosity, alkali-resistant refractories castables can be divided into light and heavy types:
Light alkali-resistant refractory castable: The porosity is greater than 45%, mainly used in parts that need to reduce weight, such as the preheater top cover, cylinder and thermal insulation lining of the rotary kiln.
Heavy alkali-resistant refractory castable: The porosity is less than 45%, mainly used in parts that withstand higher pressure and temperature, such as the kiln tail, kiln head, preheater, discharge port, tuyere and other parts of the roasting alumina rotary kiln and cement rotary kiln.
Characteristics and performance of alkali-resistant refractory castables
High alkali resistance: Alkali-resistant castables can resist the erosion of high concentrations of alkaline substances and protect the long-term stable operation of equipment.
Good construction performance: It has excellent fluidity and plasticity, is easy to construct and shape, and can be constructed by on-site vibration casting, spraying and other methods.
High strength: After hardening, it has high compressive strength and flexural strength, and can withstand large external forces.
Excellent thermal shock resistance: It is not easy to crack and peel under the alternating action of high and low temperatures, and has good thermal stability.
Due to its excellent performance, alkali-resistant refractory castables are widely used in many fields:
Chemical production: used to protect equipment and pipelines that come into contact with alkaline substances from erosion.
Metallurgical industry: used in furnaces, flues and other parts that come into contact with alkaline substances to increase the service life of equipment.
Power industry: used in flue gas desulfurization devices and flue gas purification devices to protect equipment from erosion by alkaline substances.
Production process and quality control
The production process of alkali-resistant refractory castables mainly includes steps such as raw material preparation, batching, mixing, molding and curing. During the production process, the quality of raw materials and the proportion of ingredients need to be strictly controlled to ensure that the produced alkali-resistant refractories castables have stable performance and quality. At the same time, the quality inspection of the finished product, including appearance inspection, dimension measurement, strength test, etc., is carried out to ensure that it meets the design requirements.
