Preparation and application of high-purity magnesium oxide by molten salt method

With the continuous development of high-tech ceramics,rubber,plastics,catalysts,and environmentally friendly materials,the application of magnesium oxide crystal materials,especially high-purity oxygen materials(with a magnesium oxide content of no less than 98%),is becoming increasingly widespread.

    With the continuous development of high-tech ceramics,rubber,plastics,catalysts,and environmentally friendly materials,the application of magnesium oxide crystal materials,especially high-purity oxygen materials(with a magnesium oxide content of no less than 98%),is becoming increasingly widespread.For example,it is used to treat patients with excessive gastric acid and duodenal ulcers,as a high-temperature annealing isolation agent in the manufacturing process of silicon steel,and to manufacture electronic tubes,filters,color filters,filters,etc.As a sensitive catalyst and high-performance doping material,high-purity magnesium oxide has been widely used in industrial catalysis,material modification,and the preparation of high-performance composite materials.

     There are many reported methods for preparing high-purity magnesium oxide,such as magnesite(dolomite)carbonization method,brine(seawater)lime method,brine(seawater)carbon pressing method,and magnesium salt direct pyrolysis method.The molten salt method uses one or several low melting point salts as reaction media to complete the synthesis reaction in high-temperature molten salt.Then,suitable solvents are used to dissolve the salts,which are filtered and washed to obtain the synthesized product.It is widely used in the synthesis of high melting point oxide powders,electronic ceramic powders,and other functional powder materials.The molten salt method has the advantages of simple process,low synthesis temperature,short insulation time,low cost,and stable and uniform chemical composition of synthesized powder.