Lightweight acid resistant castable

Lightweight acid-resistant castable is a special casting material used in an acid-resistant environment. It has low density and good acid resistance. It is light, strong in pressure resistance, high in acid corrosion resistance, and low in water absorption. It is especially used in areas with severe acid corrosion. It can ensure the density of the masonry and is an ideal refractory material for high chimneys, high-temperature flues, and pipeline linings.

Characteristics of lightweight acid-resistant castable

Легкий: The литейный uses lightweight aggregates or additives such as foaming agents to give it a lower density, thereby reducing the deadweight of the structure. This helps to reduce equipment load and energy consumption.

Acid resistance: Lightweight acid-resistant castables use special aggregates and binders with good acid resistance. It can resist the erosion of acidic media and maintain the stability and durability of the structure.

Temperature resistance: The castable has a certain high temperature resistance and can maintain the stability and performance of the structure in a high temperature and acidic environment.

Easy to construct: Lightweight acid-resistant castables have good castability and plasticity, and are suitable for structures of various shapes and sizes. It can be constructed by pouring, spraying, и т. д., which is convenient for coating and maintenance of complex structures.

Production and preparation of lightweight acid-resistant thermal insulation castables

Lightweight acid-resistant castables are composed of lightweight aggregates, порошки, связующие, and additives, and the main component of the binder is water glass. The light aggregate structure has a large porosity, a rough surface, and a particle size of about 5mm. The aggregate and powder have high water absorption and hygroscopicity, and poor fluidity after mixing according to the mix ratio. The product has good physical and chemical properties, with low bulk density, fast solidification when adding water, high operating temperature, compressive strength increases with the increase of temperature and acidity, низкая теплопроводность, and low linear expansion coefficient.

Application of acid-resistant castables

Химическая индустрия

Acid gas treatment: Acid-resistant castables are widely used in devices for treating acidic gases, such as waste gas treatment systems, adsorption towers, desulfurization devices, и т. д.. They can withstand the corrosion of acidic gases such as sulfuric acid, соляная кислота, hydrogen chloride, и т. д., and protect the equipment from damage.
Chemical reactor: In chemical production, acid-resistant castables are often used for the lining of various reactors to resist the erosion of acidic substances produced during chemical reactions.

Металлургическая промышленность

Iron and steel smelting: Acid-resistant castables can be used for the lining of equipment in the iron and steel smelting process, especially in acidic environments, такие как травильные баки, waste gas treatment systems, и т. д.. It can effectively protect the furnace body and other components from the erosion of acidic substances.
Non-ferrous metal smelting: In the smelting process of non-ferrous metals such as aluminum and copper, acid-resistant castables are also often used in furnace linings and smelting equipment to prevent corrosion from acidic gases and molten metals.

Энергетика

Boiler flue: Acid-resistant castables are often used in power plant boiler flues, desulfurization devices, and other areas to treat acidic components in flue gas, such as sulfur dioxide (SO2). These parts are corroded by high temperature and acidic gases, and acid-resistant castables can provide effective protection.
Waste gas treatment equipment: Such as flue gas desulfurization towers, denitrification towers, и т. д., this equipment is often exposed to acidic gases, and acid-resistant castables can be used for the lining of this equipment to ensure their long-term stable operation.

Цементная промышленность

Cement rotary kiln: Some areas of the cement kiln, especially near the kiln mouth, are often in contact with acidic gases and high temperatures. The use of acid-resistant castables can protect these areas from acidic erosion and extend the life of the kiln.

Нефтехимическая промышленность

Reaction towers and adsorption towers: Acid-resistant castables are often used in the lining of reaction towers, adsorption towers, трубопроводы, storage tanks, and other equipment in the petrochemical industry to withstand the corrosion of acidic substances.
Chlorination reactor: In the petrochemical production process, acid-resistant castables can be used in chlorination reactors, hydrogenation units, и другое оборудование, which are often exposed to acidic gases or liquids.

Environmental protection industry

Waste incinerator: Flue gas, slag, и т. д., often contain acidic substances in waste incinerators. Поэтому, the use of acid-resistant castables can effectively protect the lining of the incinerator and increase the service life of the equipment.
Acid wastewater treatment: In acid wastewater treatment facilities, acid-resistant castables can be used for lining and repair to resist the erosion of strong acidic liquids.