Physical and chemical properties

Magnesium oxide is a white amorphous powder. It is odorless, tasteless and non-toxic. The relative density is about 3.58 (25℃). Melting point 2852℃, boiling point 3600℃. Insoluble in water, insoluble in alcohol, soluble in acid or ammonium salt solution. After 1000℃ above high temperature burning, can be transformed into crystals. When the temperature is reduced to more than 1500℃, it becomes dead burned magnesium oxide or sintered magnesium oxide. Encounters with carbon dioxide in the air to form basic magnesium carbonate. Uses Magnesium oxide is used in the manufacture of ceramics, enamel, refractory crucible and firebrick. Used as a polishing agent, adhesive, paint and paper filler, neoprene rubber accelerator and activator, mixed with magnesium chloride and other solutions, can be made of magnesium oxide cement. Used medically as an antacid and laxative for hyperacidism and ulcer of the stomach and duodenum. Also used in glass, dyes, phenolic plastics, etc. It is used in food grade as a decolorizing agent in sand refining, as well as in the pH conditioning of ice cream powder.

saute

Soda soda method, ammonium bicarbonate method

High purity magnesium oxide process

International theory can bulk consumption of more than 99% of the content of magnesium oxide method is magnesium hydroxide method, that is, the use of brine as the main raw material, with ammonia or alkali as precipitant, first made of magnesium hydroxide and then calcination decomposition into magnesium oxide. At present, the consumption of magnesium oxide by ammonia method should reach more than 99%, and the large-scale consumption technology of magnesium oxide should be mature, with Qinghai halogen grains or other hydrochlorite as the main raw materials.