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Understanding Calcined Magnesite Sand: Characteristics and Applications, Choosing is No Longer Difficult

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Release time：2025-03-05

In many industrial fields, calcined magnesite plays an important role. Understanding its characteristics and Applications can help us make more suitable decisions when choosing.

In many industrial fields, calcined magnesite sand plays an important role. Understanding its characteristics and applications can help us make more suitable decisions when choosing.
From the perspective of characteristics, calcined magnesite sand has excellent refractory properties. Its melting point is relatively high, and it can maintain stable physical and chemical properties in high-temperature environments, withstanding temperatures above 1600℃, which makes it perform exceptionally well in high-temperature industries. Its thermal expansion coefficient is low, making it less likely to crack due to thermal expansion and contraction during rapid temperature changes, effectively ensuring structural stability during use. In addition, it also has good slag erosion resistance, maintaining its structure and performance when facing various slag erosions, thus extending its service life.
In terms of applications, calcined magnesite sand is widely used in the casting industry. Due to its high refractoriness and good thermal stability, it can be used to make molds and cores, helping to achieve high surface quality and good size precision in castings, meeting the needs of various precision casting. In the metallurgical industry, it is commonly used for lining steelmaking open hearths, electric furnace linings, etc. With its excellent slag resistance, it can effectively resist slag erosion, improve the furnace's service life, and reduce production costs. In the glass industry, as a refractory material for kilns, it can withstand the high temperatures and erosion during the glass melting process, ensuring the continuous and stable production of glass.
When choosing calcined magnesite sand, it is important to consider its characteristics and your own usage scenarios. If used in high-temperature, highly erosive metallurgical environments, attention should be paid to its slag erosion resistance and refractoriness; for precision casting, the thermal expansion coefficient and particle size uniformity are key. Only by fully understanding its characteristics and applications can one select high-quality calcined magnesite sand that meets the needs, allowing it to perform effectively in industrial production.

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How to choose high-quality calcined magnesite sand

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How to choose high-quality calcined magnesite sand

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How to choose high-quality calcined magnesite sand

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How to Choose High-Quality Calcined Magnesite Olivine Sand In industries such as metallurgy and casting, calcined magnesite olivine sand is an important refractory material, and its quality directly affects production efficiency and product quality. So, how can one select high-quality calcined magnesite olivine sand? Purity is the primary consideration. High-purity calcined magnesite olivine sand has fewer impurities and better refractory performance. In high-temperature environments, impurities may trigger chemical reactions, reducing the material's stability and service life. One can check the product's inspection report to clarify the content ratio of major components such as magnesium oxide (MgO) and silicon dioxide (SiO₂). Generally, a magnesium oxide content of 40% - 50% and a silicon dioxide content of around 35% - 45%, with low levels of other impurities, are ideal. Particle size distribution should not be overlooked. Different application scenarios have different requirements for particle size. For example, in precision casting, products with uniform particle size and a higher proportion of fine particles are needed, as this can make the mold surface smoother and reduce casting defects. In some applications requiring high strength, such as large metallurgical furnace linings, an appropriate ratio of coarse particles can enhance the structural strength of the material. Therefore, it is essential to choose magnesite olivine sand with a particle size distribution that matches actual usage needs. Additionally, the degree of calcination is crucial. Fully calcined magnesite olivine sand has a stable crystal structure, offering better volume stability and slag erosion resistance. One can initially judge by observing the product's appearance and color; products with uniform color and dense texture are usually well-calcined. It is also advisable to consult suppliers to understand their calcination processes and temperature control. When selecting calcined magnesite olivine sand, a comprehensive assessment of purity, particle size distribution, and calcination degree, combined with one's actual production needs, is necessary to choose a suitable product that aids in efficient and stable production, enhancing product quality and economic benefits for the enterprise.

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