High purity magnesium oxide can be used in high value-added fields such as electronic ceramics, silicon steel coating, medicine and food, said Messi Biology. At present, magnesium oxide manufacturers are using chemical methods to prepare magnesium oxide directly. However, the lightweight magnesium oxide prepared by the existing technology, either the quality of the products obtained is not stable, or the production cost is high.
The reason for the unstable quality of the existing product is that the magnetic substances such as iron in the product are removed during the reaction process, and due to the many uncertainties in the reaction process, it is difficult to achieve the expected effect stably, resulting in unstable product quality. This provides a magnesium oxide product purification method, the magnesium oxide product has been produced for strong magnetic sorting, to remove the product quality has a critical impact on the quality of the magnetic impurities such as iron, improve product quality, can create great economic benefits for the enterprise.
Magnesium oxide purification method is to configure the magnesium oxide products into magnesium hydroxide suspension, and then strong magnetic separation, the magnetic material selected, and then finally calcined to get the purified magnesium oxide products. The method can be used to reduce the content of magnetic impurities in the product easily, efficiently and stably, and can reduce the content of magnetic impurities in the product to less than 0.10%, improve the quality and grade of the magnesium oxide product, and obtain greater economic benefits.
The magnesium oxide products are prepared from magnesium-containing ores by calcination method or carbonization method, and then the magnesium oxide products are purified according to the above method. Can choose different methods to prepare magnesium oxide products according to the variety of mines, such as magnesite using calcination method to prepare magnesium oxide products, or dolomite using carbonization method to prepare magnesium oxide products, the key lies in the preparation of magnesium oxide products for the purification process. Accordingly, this method of preparing magnesium oxide has the advantages of stable product quality, magnetic impurity content, and high added value.