Hebei Messi Biology Co., Ltd. stated that the silicon steel grade magnesium oxide industry has the characteristics of high technology, high performance and high added value. At present, the development of my country’s silicon steel grade magnesium oxide industry is seriously unbalanced, and the technical content of low-end products is relatively low; and due to the limitations of technical processes in the high-end product market, only a few domestic companies currently have production capacity, which cannot fully meet the domestic market demand, and some products need to be imported from abroad. In the future, with the continuous development of the industry, the production process level of my country’s silicon steel grade magnesium oxide will gradually improve, and the product structure will gradually develop from low-end to medium and high-end products. The production capacity of silicon steel grade magnesium oxide with a purity of 99% and above will gradually increase, replacing imported products and enhancing the competitiveness of the domestic silicon steel grade magnesium oxide industry.
Oriented silicon steel, especially high magnetic induction oriented silicon steel, is an indispensable material for the manufacture of large transformers, generators and motor cores. It has the advantages of energy saving and greatly reducing volume and mass, and can meet the needs of large nuclear power plants, hydropower plants and thermal power plants. Silicon steel grade magnesium oxide is a high value-added magnesium oxide product, which is mainly used as a high temperature annealing isolator, insulating coating generator, and dephosphorization agent and desulfurization agent in steel during the manufacturing process of oriented silicon steel sheets. Silicon steel grade magnesium oxide has good magnetic conductivity and excellent insulation properties, which can form a good insulating layer and magnetic conductive medium on the surface of silicon steel sheets to suppress and overcome the eddy current and skin effect loss (referred to as iron loss) of the silicon steel core in the transformer.
Oriented silicon steel produced using silicon steel grade magnesium oxide has a complex manufacturing process and is called “a work of art in steel”. Oriented silicon steel is the core material for making iron cores of various directional magnetic field electrical products such as transformers, ballasts, amplifiers, voltage regulators, relays, rectifiers, electromagnetic switches, etc., and its terminal demand is highly dependent on the construction of power grid projects. Silicon steel grade magnesium oxide can also be used in high-precision ceramics, refractory crucibles, special polishing agents and other fields, and can also be used in aerospace and electronics industries.
The production of silicon steel grade magnesium oxide in my country began in the late 1980s, later than Japan, Europe and other countries. Before that, my country’s silicon steel grade magnesium oxide market was highly dependent on imports. It was not until my country’s independent production that domestic silicon steel grade magnesium oxide products gradually replaced imports. In recent years, despite the problem of overcapacity in the steel industry, oriented silicon steel sheets are high-tech products among steel products, and the demand for oriented silicon steel sheets in domestic power grid construction has not decreased, which has promoted the development of the silicon steel grade magnesium oxide industry.
In 2018, the production capacity of China’s silicon steel grade magnesium oxide industry was 26,300 tons, with a high degree of concentration. Due to the high technical barriers of the silicon steel grade magnesium oxide industry and the relatively concentrated downstream industries, there are currently not many domestic silicon steel grade magnesium oxide production companies, most of which are professional magnesium compound production companies, mainly Hebei Messi Biology Co., Ltd.