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How to distinguish light magnesium oxide and heavy magnesium oxide

Magnesium oxide is generally divided into light magnesium oxide and heavy magnesium oxide two kinds, light volume fluffy, white amorphous powder, odorless, tasteless and non-toxic, density 3.58g/cm3, insoluble in pure water and organic solvents, solubility in water due to the presence of carbon dioxide and increase, can be dissolved in acid, ammonium salt solution. Scorched by high temperature into crystals, carbon dioxide in the air to generate magnesium carbonate complex salt. Heavy volume of compact, white or beige powder, easy to combine with water, easy to absorb water and carbon dioxide in the open air, mixed with magnesium chloride solution is easy to gelatinization and hardening.

Light Burned Magnesium Oxide

Application of magnesium oxide: the determination of sulfur in coal and pyrite and steel sulfur and arsenic, used as the standard of white pigment, light magnesium oxide is mainly used as raw materials for the preparation of ceramics, enamels, refractory crucibles and refractory bricks, but also used as abrasive adhesives, paints and fillers for paper, accelerators and activators of chloroprene rubber and fluoroelastomers. Mixed with magnesium chloride and other solutions, it can be made into magnesium oxide water tone. Medicine used as antacid and light laxative, used for hyperacidity stomach and duodenal ulcer disease, the chemical industry used as catalysts and raw materials for the manufacture of magnesium salts, also used in the manufacture of glass, dyeing meal, phenolic plastics and so on.

Heavy magnesium oxide is used in the industry for burning grinding and half-roller, construction industry for the manufacture of artificial chemical flooring artificial marble heat-proof board soundproof board plastic industry used as a filler, but also for the production of other magnesium salts.

Lightweight magnesium oxide is generally made of magnesium chloride, magnesium sulfate, or magnesium bicarbonate, into a water-soluble product and then through chemical method into a water-insoluble product, and then calcined into magnesium oxide, the production of a very small product stacking density is generally 0.2 (g / ml), while the heavy quality of magnesium oxide is generally made of magnesite, magnesia ore directly calcined from a very small stacking density is generally 0.5 (g / ml).

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