What are the uses of magnesium oxide

Magnesium oxide is divided into light magnesium oxide and heavy magnesium oxide. Light volume, white amorphous powder. Odorless, tasteless and nontoxic. The density was 3.58 g / cm3. It is difficult to dissolve in pure water and organic solvents, and its solubility in water increases due to the presence of carbon dioxide. It is soluble in acid and ammonium salt solution. It is transformed into crystal by high temperature burning. In the presence of carbon dioxide in the air, magnesium carbonate is formed. It is beige or dense in color. It is easy to combine with water and absorb water and carbon dioxide in the open air. It is easy to gel and harden when mixed with magnesium chloride solution.
Classification and application of magnesium oxide
Advanced lubricating oil grade magnesium oxide
Application: it is mainly used as cleaning agent, vanadium inhibitor and desulfurizer in advanced lubricating oil processing, which greatly improves the compactness and rheology of lubricating film and reduces ash content. Removing lead and mercury can reduce the environmental pollution caused by lubricating oil or fuel oil waste. The surface treated magnesium oxide can also be used as complexing agent, chelating agent and carrier in oil refining process, which is more conducive to product fractionation and improve product quality. Especially, adding Mg0 in heavy oil combustion can eliminate the damage of vanadic acid in heavy oil to furnace.
Food grade magnesium oxide
Application: used in food additives, color stabilizers, pH value regulators, as supplements of magnesium in health products and food. It can be used as decolorizing agent, ice cream powder, pH regulator, etc. As anti caking agent and anti acid agent, it can be used in wheat flour, milk powder, chocolate, cocoa powder, grape powder, sugar powder and other fields. It can also be used in ceramic, enamel, glass, dye and other fields.
Medical grade magnesium oxide
Application: medical grade magnesium oxide can be used as antacid, adsorbent, desulfurizer, lead remover, complexation filter aid and pH regulator in the field of biopharmaceutical. It can be used as antacid and laxative in medicine to inhibit and relieve gastric acid excess and treat gastric ulcer and duodenal ulcer. It can neutralize gastric acid strongly and slowly, and does not produce carbon dioxide.
Silicon steel grade magnesia
Application field: silicon steel grade magnesium oxide has good magnetic conductivity (i.e. high positive magnetic susceptibility) and excellent insulation performance (i.e. conductivity can be as low as 10-14us / cm dense state). Good insulating layer and magnetic conductive medium can be formed on the surface of silicon steel sheet to restrain and overcome eddy current and skin effect loss of silicon steel core in transformer. It can be used as isolating agent for high temperature annealing. It can also be used as ceramic materials, electronic materials, chemical raw materials, binders, additives, etc. in silicon steel, it can be used as dephosphorizing agent, desulfurizing agent and insulating coating forming agent in silicon steel.
Advanced electromagnetic grade magnesium oxide
Applications: for wireless high frequency paramagnetic materials, magnetic rod antenna, magnetic core of FM components, etc. Instead of ferrite. It can be used in the manufacture of composite superconducting magnetic materials and in electronic magnetic industry. As "soft magnetic material". It is also an ideal raw material for industrial enamel and ceramics.
High purity magnesium oxide
Application: high purity magnesium oxide has excellent alkali resistance and electrical insulation at high temperature. It has high thermal expansion coefficient and thermal conductivity and good light transmittance. It is widely used as high temperature and heat resistant material. In the field of ceramics, it is used as raw material of transparent ceramic crucible and substrate, and in electrical material and electrical field, it is used as filler of magnetic device, insulating material and various carriers. The thermal conductivity loss of alumina substrate is only 10 times higher than that of alumina substrate. It can also be used as raw material of high purity fused magnesia, and can be used as "analytical pure" magnesia chemically.