Analysis of the application and development trend of basic magnesia refractory bricks in the field of new energy

Abstract

Basic magnesia refractory bricks play an important role in the field of new energy due to their excellent high temperature stability, corrosion resistance and thermal conductivity. This paper deeply explores the current status and potential of its application in the fields of solar thermal power generation, wind power generation, hydrogen energy industry and biomass energy, and analyzes the future development trend, aiming to provide a reference for the design and material selection of new energy equipment.

1. Definition and classification of basic magnesia refractory bricks

Basic magnesia refractory bricks are a refractory material with magnesium oxide (MgO) and alkaline oxides (such as CaO, SiO₂) as the main components. According to their chemical composition and physical properties, they can be divided into ordinary basic magnesia refractory bricks, basic magnesia-alumina refractory bricks and basic magnesia-iron refractory bricks. Ordinary basic magnesia refractory bricks have low cost and are widely used in general industrial kilns; 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.

2. Advantages of basic magnesia refractory bricks

2.1 High temperature stability

Alkaline magnesia refractory bricks can maintain structural integrity and stable performance in extremely high temperature environments, and are not easily affected by thermal expansion and thermal shock. In the solar thermal power generation system, the concentrator and the combustion chamber require refractory materials that can stably withstand the impact of high temperature heat. Due to their unique crystal structure and chemical composition, alkaline magnesia refractory bricks can ensure the long-term stable operation of the equipment.

2.2 Corrosion resistance

Alkaline magnesia refractory bricks have excellent corrosion resistance, mainly due to their special chemical composition and crystal structure. Magnesium oxide (MgO) itself has strong alkalinity, which can neutralize the erosion of acidic substances and slow down the wear rate of refractory materials. In addition, the addition of alumina (Al₂O₃) and other ingredients further enhances the corrosion resistance and extends the service life of the material.

2.3 Good thermal conductivity

The good thermal conductivity of alkaline magnesia refractory bricks directly affects the thermal energy transfer efficiency of energy equipment in high temperature environments. In the solar thermal power generation system, alkaline magnesia refractory bricks can quickly transfer the concentrated heat of solar energy to the collector tube or energy storage device, improving the energy conversion efficiency. In the hydrogen energy industry, the high-temperature reactor used for hydrogen production needs to withstand high temperature and high pressure environment. The thermal conductivity of alkaline magnesia refractory bricks ensures the efficient progress of the reaction process.

3. Application of alkaline magnesia refractory bricks in the field of new energy

3.1 Application in solar thermal power generation

Alkaline magnesia refractory bricks are widely used in key components such as solar concentrators and reflectors. Its high temperature stability ensures that the concentrator will not deform or break under long-term high temperature. The good thermal conductivity accelerates the heat transfer of solar energy and enhances the overall performance of the solar thermal power generation system.

3.2 Application in wind power generation

In the high-temperature components of wind turbines, such as heat exchangers and exhaust ducts, alkaline magnesia refractory bricks can quickly conduct the heat of high-temperature gases, maintain a stable operating temperature inside the system, and improve energy utilization efficiency.

3.3 Application in the hydrogen energy industry

Alkaline magnesia refractory bricks have been widely used in the hydrogen energy industry due to their excellent high temperature stability and corrosion resistance. In high temperature reactors, alkaline magnesia refractory bricks can withstand high temperature and high pressure environments, maintain stable physical and chemical properties, and ensure the normal operation of the reactor.

3.4 Application in biomass energy

Alkaline magnesia refractory bricks are often used in the internal structure construction of biomass combustion boilers and gasification equipment. Its good high temperature stability and corrosion resistance can effectively withstand the impact of high temperature combustion gas and extend the service life of the equipment.

3.5 Application potential in other new energy fields

Alkaline magnesia refractory bricks also have broad application potential in emerging fields such as geothermal power generation, nuclear energy industry and energy storage. For example, in geothermal power generation systems, alkaline magnesia refractory bricks can be used to construct geothermal well walls to improve the stability and reliability of the system.

4. Development trend of basic magnesia refractory bricks in the field of new energy

4.1 Analysis of the current status and trend of industry development

As the world pays more and more attention to renewable energy, the basic magnesia refractory brick industry has ushered in new opportunities and challenges. In the future, with the continuous innovation and promotion of new energy technologies, the basic magnesia refractory brick industry will continue to maintain a rapid growth momentum, and it is expected that the demand in new energy fields such as solar thermal power generation, wind power generation, and hydrogen energy industry will continue to expand.

4.2 Application expansion driven by technological innovation

The innovation of new material synthesis technology has made it possible to improve the performance and expand the application of basic magnesia refractory bricks. By improving the material formula and preparation process, new refractory materials with higher refractoriness, better corrosion resistance and thermal conductivity are developed to enable them to adapt to more stringent working environments.

4.3 The impact of environmental protection requirements on product design and production

As global environmental awareness increases, the refractory industry must be committed to reducing the negative impact on the environment. In the design and production process, the use of environmentally friendly materials, reducing energy consumption, and improving resource utilization are all key factors in designing environmentally friendly products. Production enterprises need to adopt clean production technology, reduce or avoid the emission of harmful substances, and carry out effective wastewater treatment and solid waste disposal.

4.4 Analysis of international market demand and competition pattern

With the increasing demand for renewable energy worldwide, the international market demand for alkaline magnesia refractory bricks is also growing. The main manufacturers are located in Asia, Europe and North America, and the competition is mainly concentrated in product quality, price, delivery cycle and after-sales service. Enterprises need to pay close attention to changes in international trade policies, take effective countermeasures, and maintain international market competitiveness.

5. Conclusion

Alkaline magnesia refractory bricks have important application value in the field of new energy. By continuously strengthening technological innovation, improving product quality and environmental protection performance, and actively expanding the international market, the alkaline magnesia refractory brick industry will make greater contributions to promoting the development of sustainable energy.