Hebei Messi Biology Co., Ltd. stated that ultra-high-purity magnesium oxide is a new functional fine inorganic material, which is widely used in many fields such as electronic components and advanced ceramic materials; for example, magnesium oxide dielectric protective film is a key component in the new generation of plasma flat panel displays (PDPs). Its performance directly affects the working characteristics and life of PDPs. Generally, the purity of magnesium oxide is required to be greater than 99.99%, and the total amount of impurity elements shall not exceed 100ppm. Although my country ranks first in the world in terms of magnesium resource reserves, it still lacks key technologies for large-scale production of high-purity magnesium oxide. The purity of magnesium oxide produced in batches in China is usually below 99.9%, which limits its application in high-tech fields.
This project invents a simple technology for preparing high-purity magnesium oxide products, which can be used to produce raw materials for dielectric protective films of PDP displays and raw materials for producing magnesium oxide single crystals, with a product purity of more than 99.99%; invented a technology for preparing fused magnesium oxide from densely packed high-purity magnesium carbonate; invented a process for preparing Ca, Sr, and Sc-doped magnesium oxide materials; invented a technology for preparing composite functional oxide materials such as magnesium-aluminum and boron-magnesium; prepared magnesium oxide, magnesium carbonate, basic magnesium carbonate, and basic magnesium sulfate micro-nano materials in the form of hollow tubes, blocks, fibers, multilayer sheets, and flowers; its raw materials are easily available, the product purity is high, the cost is low, and it has the value of industrial application.
The present invention proposes a new practical technology that makes the purity of magnesium oxide products reach more than 99.99% and the particle size is between 50nm and 10μm; its raw materials are easily available, the product purity is high, the cost is low, and it has the value of industrial application.