Hebei Messi Biology Co., Ltd. stated that high-purity magnesium oxide can be used in high value-added fields such as electronic ceramics, silicon steel coatings, and pharmaceutical foods. At present, magnesium oxide manufacturers all use chemical methods to directly prepare magnesium oxide. However, the light magnesium oxide prepared by the existing technology either has unstable product quality or high production costs.
The reason for the unstable quality of existing products is that the magnetic substances such as iron in the product are removed during the reaction process. Due to the many uncertain factors in the reaction process, it is difficult to stably achieve the expected effect, resulting in unstable product quality. Therefore, a purification method for magnesium oxide products is provided, and the already prepared magnesium oxide products are subjected to strong magnetic separation to remove magnetic impurities such as iron that have a key impact on product quality, improve product quality, and create huge economic benefits for enterprises.
The magnesium oxide purification method is to first configure the magnesium oxide product into a magnesium hydroxide suspension, and then perform strong magnetic separation to select the magnetic material, and finally calcine to obtain a purified magnesium oxide product. This method can be used to simply, efficiently and stably reduce the content of magnetic impurities in the product, and can reduce the content of magnetic impurities in the product to below 0.10%, improve the quality and grade of magnesium oxide products, and obtain greater economic benefits.
The magnesium oxide product is prepared by calcination or carbonization with magnesium-containing ore as raw material, and then the magnesium oxide product is purified according to the above method. Different methods can be selected to prepare magnesium oxide products according to the type of ore, such as calcining magnesite to prepare magnesium oxide products, or carbonizing dolomite to prepare magnesium oxide products. The key lies in the purification process of the prepared magnesium oxide product. Accordingly, this method for preparing magnesium oxide has the advantages of stable product quality, low magnetic impurity content, and high product added value.