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How is high-purity magnesium produced? What are the development prospects for high-purity magnesium?
How is high-purity magnesium produced? What are the development prospects for high-purity magnesium?
Gas-phase method: High-purity magnesium is reacted with oxygen to form crystal nuclei, after which the particles continue to grow, yielding high-purity micron-sized magnesium oxide powder. A crude feedstock containing more than 80% (by weight) magnesium oxide is dissolved in an inorganic acid—sulfuric acid, hydrochloric acid, or nitric acid—at a molar ratio of 1:3 to 1:6 to produce an inorganic magnesium salt. The product is then purified to remove impurities, followed by pressurized heating in an oxygen atmosphere, subsequent water washing, dehydration, and drying; finally, it is heated at 1100°C for 1 hour to obtain the final product. High-purity magnesium 。
The magnesium hydroxide calcination process uses a purified magnesium sulfate solution as the feedstock, with pure ammonia solution employed as the precipitant. Magnesium hydroxide is precipitated by adding the ammonia solution to the magnesium sulfate solution, followed by solid–liquid separation using a plate-and-frame filter press. The filter cake is washed to obtain high-purity magnesium hydroxide, which is then dried and calcined to yield high-purity magnesium.
Magnesium oxide powder is separated from water by washing, impurities are removed, and the remaining material precipitates as magnesium slurry. Subsequently, the magnesium hydroxide is digested, dried, and calcined to remove water, yielding magnesium oxide.
Calcination method: Magnesite is calcined in a decomposition furnace at 950°C, followed by cooling, sieving, and grinding to produce light-burned magnesium oxide.
Seawater Process: The conventional seawater process for producing magnesium oxide involves concentrating seawater to about 20°Bé, then introducing it into a reactor. While stirring, a clear solution of soda ash at approximately 20°Bé is added slowly, and the mixture is reacted at around 55°C to form heavy magnesium carbonate. The product is subsequently washed, subjected to centrifugal separation, calcined at 700–900°C, milled, and air-classified to yield a light-grade magnesium oxide product.
With the widespread adoption of quality principles, High-purity magnesium It is increasingly recognized by more and more enterprises as a high-quality product. However, due to factors such as price and the need for rigorous purity testing, high-purity magnesium has not yet fully captured the market. In the past, high-purity magnesium has long served as a key auxiliary material in many industries. Moreover, in recent years, mounting evidence has shown that products manufactured by companies using substandard magnesium oxide can, to a certain extent, erode customer trust in those companies. Consequently, high-purity magnesium with higher purity levels is becoming ever more favored by businesses. As a product whose quality has been steadily improving in recent years, high-purity magnesium is gradually being adopted by an increasing number of enterprises.
High-purity magnesium producers must develop products tailored to the needs of various industries. Without continuous product quality improvements, it will be difficult for high-purity magnesium to gain broad market acceptance. Nevertheless, industry insiders remain optimistic about its future prospects. In recent years, the stability and high purity of high-purity magnesium have driven a clear upward trend in sales.
If you would like to gain a deeper understanding of high-purity magnesium, please feel free to contact us. With many years of experience in the production and manufacturing of high-purity magnesium, we can provide comprehensive insights from various perspectives. High-purity magnesium knowledge, enabling everyone to gain a deeper understanding of high-purity magnesium.
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Henan Mingmei Magnesium Technology Co., Ltd.
Phone:+86-392-3658888 / 3659999
Email:hnmingmei@163.com
Address: Hebi National Economic and Technological Development Zone, Henan Province
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