With the increase of electrical steel production in China, the demand of silicon steel grade magnesium oxide is increasing, and the traditional process of preparing magnesium oxide from dolomite is unable to meet the market demand. China is a country rich in brine resources, therefore, it is becoming more and more important to study how to resourcefully and comprehensively utilize the salt lake resources. The silicon steel grade magnesium oxide is a kind of coating material for the preparation of oriented silicon steel, mainly used in the high temperature annealing treatment stage of oriented silicon steel, playing the role of isolator, insulating film, desulfurization, dephosphorization, etc. The methods, process flow, research progress and problems of preparing silicon steel grade magnesium oxide are reviewed, and the development direction of silicon steel grade magnesium oxide preparation technology is pointed out, and suggestions are made for the utilization of brine resources in China.
The article studied the preparation of silicon steel grade magnesium oxide by brine-ammonia method, discussed the factors affecting the settling performance and conversion rate of intermediate magnesium hydroxide, and determined the best process conditions for the preparation of magnesium hydroxide; through the study of calcination temperature and time of magnesium hydroxide, the calcination conditions were determined, and the produced magnesium oxide has small particle size, good dispersion performance and low hydration rate, which meets the requirements of silicon steel grade magnesium oxide.
The invention relates to...
#magnesia #mgo #chemical #chemistry #magnesiumoxide
https://meixi-mgo.com/research-progress-of-magnesium-oxide-for-silicon-steel-coating/
0 Comments