Definition and classification of basic refractory bricks
Alkaline magnesia refractory bricks are an important refractory material, the main components of which are magnesium oxide (MgO) and alkaline oxides (such as CaO, Si0₂, etc.). This type of refractory brick is well-known in the industry for its excellent high temperature resistance and corrosion resistance. According to their chemical composition and physical properties, basic magnesia refractory bricks can be divided into different types, mainly including ordinary basic magnesia refractory bricks, basic magnesia-alumina refractory bricks and basic magnesia-iron refractory bricks. Ordinary basic magnesia refractory bricks are widely used in general industrial kilns due to their low cost; while basic magnesia-alumina refractory bricks are often used in high-temperature equipment such as converters and electric furnaces in the metallurgical industry due to their higher corrosion resistance. Therefore, understanding and classifying basic magnesia refractory bricks is of great significance for selecting suitable refractory materials and improving equipment durability.
Application of alkaline refractory bricks in the field of new energy
1. Application of alkaline magnesia refractory bricks in solar thermal power generation
In solar thermal power generation, alkaline magnesia refractory bricks are widely used in the construction of various key components, including solar concentrators or reflectors. In solar concentrators, alkaline magnesia refractory bricks, as an important supporting material, can withstand the high temperature energy from sunlight and effectively concentrate it on the collector tube. Its high temperature stability ensures that the concentrator will not deform or break under long-term high temperature, thereby ensuring the stable operation of the solar thermal system. The reflector is designed to reflect sunlight onto the concentrator to improve energy conversion efficiency. The good thermal conductivity of alkaline magnesia refractory bricks can accelerate the heat transfer process of solar energy and further enhance the overall performance of the solar thermal power generation system.
2. Application of alkaline magnesia refractory bricks in wind power generation
Wind turbines convert wind energy into mechanical energy by rotating blades, and then convert it into electrical energy. In this process, the combustion chamber is one of the key components. It is used to burn fuel to produce high-temperature gas to drive the turbine to rotate. Due to the high temperature of the gas inside the turbine, the refractory material needs to be able to withstand high temperatures and maintain structural stability to ensure the safe operation of the turbine. In the high-temperature components of wind turbines, such as heat exchangers, exhaust ducts, etc., high-temperature resistant refractory materials are also required to ensure the stable operation of the system. The good thermal conductivity of alkaline magnesia refractory bricks enables them to quickly conduct the heat of high-temperature gas, which helps to maintain a stable operating temperature inside the system and improve energy utilization efficiency.
3. Application of alkaline magnesia refractory bricks in the hydrogen energy industry
In the hydrogen energy industry, the high-temperature reactor is a key equipment used to realize the process of producing hydrogen such as steam reforming reaction and methane reforming reaction. Alkaline magnesia refractory bricks have been widely used in the hydrogen energy industry due to their excellent high-temperature stability and corrosion resistance. First of all, alkaline magnesia refractory bricks can withstand long-term operation in high-temperature environments, maintain stable physical and chemical properties, and ensure the normal operation of the reactor. Secondly, alkaline magnesia refractory bricks can resist the erosion of corrosive gases such as hydrogen and water vapor, extend the service life of the equipment and reduce maintenance costs. In the process of hydrogen production, the inside of the reactor needs to withstand a high temperature and high pressure working environment, and needs to maintain good thermal conductivity to ensure the efficient progress of the reaction process. Alkaline magnesia refractory bricks have good thermal conductivity, can quickly transfer heat to the entire reactor, maintain a uniform temperature distribution, and improve the reaction rate and efficiency.
4. Application of alkaline magnesia refractory bricks in biomass energy
Biomass energy is a renewable energy source that uses biomass resources such as wood and straw for energy conversion, including biomass combustion, gasification, fermentation and other processes. In the production and utilization of biomass energy, alkaline magnesia refractory bricks are often used for the internal structure construction of biomass combustion boilers or biomass gasification equipment. Since the high-temperature combustion gas generated during biomass combustion has high requirements for the internal materials of the equipment, refractory materials are needed to construct the furnace and internal structure of the boiler. Due to its good high temperature stability and corrosion resistance, alkaline magnesia refractory bricks have been widely used in biomass combustion boilers. They can effectively withstand the impact of high temperature combustion gas and extend the service life of the equipment. In biomass gasification equipment, refractory materials are also needed to construct the internal structure of the reactor to withstand the erosion of high temperature environment and corrosive gas. Due to its good high temperature resistance and corrosion resistance, alkaline magnesia refractory bricks have been widely used in biomass gasification equipment, which can effectively maintain the stable operation and efficient production of the equipment.
5. Discussion on application potential in other new energy fields
In addition to the already mentioned solar thermal power generation, wind power generation, hydrogen energy industry and biomass energy fields, alkaline magnesia refractory bricks also have broad application potential in other new energy fields. In geothermal power generation systems, geothermal wells are key components used to extract underground heat energy. Due to the harsh working environment of geothermal wells, refractory materials that can withstand high temperature and corrosion are required to construct the well wall. Due to its high temperature resistance and corrosion resistance, alkaline magnesia refractory bricks are expected to be used in the construction of geothermal well walls in the field of geothermal power generation to improve the stability and reliability of geothermal power generation systems. Nuclear reactors in the nuclear energy industry are important equipment for energy conversion, and the internal structure of nuclear reactors also requires refractory materials that can withstand extreme high temperatures and radiation environments. In the field of energy storage, such as combined heat and power systems or heat storage devices, high-temperature resistant refractory materials are also needed to carry high-temperature heat or heat storage materials.
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