1. Lining of high-temperature equipment: refractory plastics are often used for lining of high-temperature equipment, such as furnace, burner, furnace bottom and other places. It forms a dense, continuous, crack-free lining that provides excellent resistance to fire and chemical attack.
2. Metallurgical industry: Refractory plastics are widely used in steelmaking, ironmaking and casting processes in the metallurgical industry. It can be used to repair and maintain high-temperature equipment, such as converters, blast furnaces, electric furnaces, pouring tanks, etc. Refractory plastics can withstand high temperature and metallurgical liquid erosion, prolonging the service life of equipment.
3. Chemical industry: Refractory plastics are widely used in the chemical industry, especially in acid-base corrosion environments. It can be used for lining and repairing equipment such as storage tanks, reactors, pipes and nozzles. Refractory plastics have excellent resistance to acids and alkalis, protecting equipment from corrosion and erosion.
4. Power industry: Refractory plastics are often used in the lining and maintenance of high-temperature combustion equipment in the power industry. For example, it can be used in the lining of boilers and burners in thermal power plants to provide excellent fire resistance and resistance to chemical attack.
5. Environmental protection industry: refractory plastics are also widely used in environmental protection projects. For example, in waste incineration plants, refractory plastics can be used for lining furnaces and flues to withstand high temperatures and corrosive gases.
6. Other fields: Refractory plastics can also be used in other fields, such as glass industry, ceramic industry, aluminum industry, etc. It is commonly used in lining and repairing of high temperature equipment in these industries to protect equipment from high temperature and chemical attack.
1. Aluminum silicate can be plastic
Aluminum silicate plastic uses alumina, silica, etc. as the main aggregates, uses organic glue or inorganic glue as the adhesive, and adds an appropriate amount of regulators and protective agents. It is suitable for furnace inner chamber walls, partitions, and kiln Repair and reinforcement of the head, kiln tail and other parts.
2. Aluminum phosphate can be plastic
Aluminum phosphate plastic uses kaolin, alumina and tricalcium phosphate as the main raw materials. It is prepared into a slurry through proportioning and then mixed with appropriate gelling and hardening agents. It is cured at a higher temperature and is suitable for various electric power applications. , petrochemical and metallurgical equipment maintenance and installation.
3. Alumina can be plastic
Alumina plastic uses alumina and other oxides, silica and kaolin as the main raw materials, uses organic glue or inorganic glue as the adhesive, and adds an appropriate amount of additives and protective agents. It is suitable for various rotary drum kilns, Fire-resistant structural parts in high-temperature pipelines and petrochemical industries.
4. Silicon carbide can be plastic
Silicon carbide plastic uses silicon carbide as the main material, adding binders, expansion agents, steel fibers, etc., and is suitable for high-temperature furnaces, wear-resistant equipment, metallurgical equipment, ceramic equipment and other fields.
1. Refractory plastic uses
Refractory plastic is a special refractory material with the characteristics of viscosity, plasticity and easy molding. It is widely used in the maintenance, patching, sealing and coating of high-temperature equipment. Its main uses include the following aspects:
1.1. Maintenance of thermal equipment: Refractory plastics can be used to partially repair, seal and reinforce high-temperature furnaces, heat treatment furnaces, glass kilns, etc.
1.2. Foundry industry: Refractory plastics can also be used for the lining, repair and reinforcement of various furnaces, heating furnaces and crucibles in the foundry industry.
1.3. Electric power industry: In the electric power industry, refractory plastics are widely used in the anti-corrosion, insulation and reinforcement of high-temperature equipment such as boilers, generators and chimneys.
1.4. chemical industry: Fire-resistant plastics can also be used for patches and coatings on reactors, storage tanks, pipelines and other equipment in the chemical industry.
In short, refractory plastics have good high temperature resistance, corrosion resistance and wear resistance, and can provide a convenient and economical solution for the maintenance and modification of high temperature equipment.
2. How to use refractory plastics
Refractory plastic is a special refractory material, and its use is usually as follows:
2.1. Material preparation: Mix the required refractory plastic and water evenly in proportion to make a mud.
2.2. Surface treatment: Clean, polish and rust-remove the surface of the equipment that needs to be repaired or coated to ensure bonding strength and coating firmness.
2.3. Construction operation: Use scrapers, spray guns and other tools to apply or spray refractory plastic to the parts that need to be treated. Pay attention to uniform thickness and avoid problems such as air trapped gaps.
2.4. Curing treatment: After the refractory plastic coating is completely dry, heat and solidify it, usually ab
1. Temperature adaptability: The refractory plastic should be selected to match the temperature range of the repaired area or equipment. Different types of refractory plastics have different temperature resistance characteristics, so appropriate products must be selected according to specific requirements.
2. Application surface preparation: Before using refractory plastic, the repair surface must be fully cleaned and prepared. It is often necessary to thoroughly remove old refractory material, loose particulate matter and dirt, and ensure that the surface is dry and clean so that the refractory plastic can adhere well and perform its repair function.
3. Mixing and application: According to the instructions provided by the manufacturer of the refractory plastic, mix the powder and liquid components of the plastic in proportion until a uniform mixture is obtained. The mixture is then quickly applied to the area to be repaired and shaped and compacted using appropriate tools (eg scrapers, presses, etc.).
4. Curing and drying: Refractory plastics need a certain amount of time to cure and dry. After construction is complete, allow an appropriate curing and drying time according to the manufacturer's recommendations, before ensuring the repaired area is fully restored to normal use.
5. Environmental and safety precautions: When using refractory plastics, relevant environmental and safety requirements should be complied with. This may include using appropriate personal protective equipment (e.g. gloves, glasses, masks, etc.), ensuring a well-ventilated workplace, and properly handling and disposing of any waste or residue.
6. Quality Control: Use standard refractory plastics and make sure to follow the manufacturer's guidelines and recommendations for product use to ensure the best repair results and performance.
There will be five main directions for the future development of refractory plastic.
1. China's refractory plastic in the construction of relatively backward technology, pounding construction is the current mainstream construction method. In foreign countries, especially our near neighbor Japan, spraying technology is widely used in the construction of plastic; this new technology has the advantages of high efficiency, time saving, labor saving, good uniformity, strong integrity and improved operating environment. Overseas, the spraying technology of plastic is used in a large number of heating furnaces; while China's research started late, the lack of supporting materials and equipment, spraying construction of late plastic elasticity, poor bonding, easy to peel off and other problems. In the future, research to improve the initial bonding strength of refractory plastic, the use of spray construction has a pivotal role.
2. Spraying robots have begun to be used in the operation of Japanese industrial furnaces, and future construction automation and integration is the trend of construction technology improvement; the construction environment and construction process of refractory materials will undergo important changes, which also leads to significant changes in the performance of refractory materials. Especially with today's emphasis on environmental protection, refractories need to adapt to the changes of the times, from production to construction.
3. Increasing the variety of indefinite refractory materials and improving the shortcomings of traditional materials to promote the technological development of industrial production fields such as steelmaking and ironmaking, petroleum and chemical industry from the aspect of equipment materials.
4. The new composite bonding agent will replace the traditional indefinite refractory bonding agent. The composite bonding agent can not only improve the performance of the plastic in high temperature work, but also improve the construction performance of the plastic, to meet the needs of construction and improve efficiency. Research multi-species composite bonding agent can greatly open up new markets for refractory plastics, not only limited to the traditional manufacturing of industrial furnaces, but also can be used in new markets such as fire design of buildings.
5. Compared with other kinds of unshaped refractory materials, the unshaped refractory plastic has a series of unique excellent properties: thermal shock resistance, spalling resistance and corrosion resistance. At present, in the field of aviation and aerospace, refractory refractories have started to be involved in the research and production of thermal protection materials for the thermal protection of aircraft and ground facilities. Traditional organic refractory materials have a low melting point and poor chemical resistance, but refractory plastics can play a role in the aviation and aerospace industry.
Songlou Industrial Zone, Xinmi City, Henan, China