What are the ingredients of MgO Powder?
Publish Time: 2022-10-28 Origin: Site
Magnesium oxide (chemical formula: MgO) is an oxide of magnesium, an ionic compound. It is a white solid at room temperature. Magnesium oxide exists in nature in the form of magnesite, which is the raw material of magnesium smelting.
Mgo powder properties
Magnesium oxide commonly known as bitter soil, also known as magnesium oxygen, magnesium oxide is an alkaline oxide, with alkaline oxide connectivity, belongs to cementitious materials. White or light yellow powder, odorless, tasteless, non-toxic, is a typical alkaline earth metal oxide, chemical formula MgO. White powder, melting point is 2852℃, boiling point is 3600℃, relative density is 3.58(25℃). Soluble in acid and ammonium salt solution. Exposed to the air, easy to absorb water and carbon dioxide and gradually become alkali magnesium carbonate, light products heavier products faster, combined with water to produce magnesium hydroxide under certain conditions, a slightly alkaline reaction, the pH of saturated aqueous solution is 10.3. Soluble in acid and ammonium salt insoluble in water, its solution is alkaline. Insoluble in ethanol.
It has strong refraction in the visible and near ultraviolet light range. Magnesite (MgCO3), dolomite (MgCO3·CaCO3) and seawater are the main raw materials for magnesium oxide production. Magnesium oxide is obtained by thermal decomposition of magnesite or dolomite. Magnesia hydroxide precipitate by treating seawater with slaked lime, and magnesia hydroxide by burning. Magnesium chloride halogen block or brine after bromine extraction can also be used as raw material to add sodium hydroxide or sodium carbonate to produce magnesium hydroxide or basic magnesium carbonate precipitation, and then burned to produce magnesium oxide. Magnesite, dolomite, brine or halogen are mainly used as raw materials in China.
Magnesium oxide has high fire-resistant and insulating properties. When the temperature is above 1000℃, it can be converted into crystal, and when the temperature is above 1500℃, it can become dead burned magnesium oxide (also known as magnesia) or sintered magnesium oxide.
Magnesium oxide powder categories
Classification: Two kinds of light magnesium oxide and heavy magnesium oxide. Light and loose, white amorphous powder. Odorless, tasteless and non-toxic. Density 3.58g /cm3. Insoluble in pure water and organic solvents, in water solubility due to the presence of carbon dioxide and increase. Soluble in acid, ammonium salt solution. It is converted into crystals by burning at high temperature. In contact with carbon dioxide in the air to form magnesium carbonate double salt. Heavy bulk compact, white or beige powder. It is easy to combine with water and absorb moisture and carbon dioxide in the exposed air. It is easy to gelatinize when mixed with magnesium chloride solution.
With the industrial upgrading and the demand and development of high-tech functional materials market, we have developed and produced a series of high-tech and fine magnesium oxide products, which are mainly used in high grade lubricating oil, high grade tanning leather alkali extraction, food grade, medicine, silicon steel grade, high electromagnetic grade, high purity magnesium oxide and other nearly ten varieties.
Chemical composition of industrial grade light burned magnesium is as follows:
Brand | QM-85 | QM-80 | QM-75 |
Grade | （A） | （B） | （C） |
MgO ≥ | 85 | 80 | 75 |
Active MgO ≥ | 65 | 60 | 50 |
Free CaO ≤ | 1.5 | 2.0 | 2.0 |
L.O.I | 1-9 | 1-9 | ≤12.0 |
Pure magnesium oxide applications
Used in metallurgy, smelting, high-grade magnesia brick, refractories and moisturizing materials manufacturing, Also widely used in rubber, rubber sheet, rubber products, medicine industry, food industry, plastic plate promoter, glass fiber reinforced plastic plasticizer and silicon steel sheet surface coating of paint, paper production of filling material and reinforcing agent, steel ball polishing agent, leather treatment agent, insulation materials, oil, dye, ceramic, desiccant, resin, flame retardant used for rubber and plastic products of the filling material and strengthening agent, soft magnetic Ferrite, adhesives, chemical industry as catalysts and manufacturing other magnesium compounds, enamels, ceramics, glass and other raw materials.
The difference between light and heavy magnesium oxide
Light magnesium oxide
Properties: Light magnesium oxide is white, amorphous powder, odorless, tasteless, non-toxic, specific gravity of 3.58(25), melting point of 2852, boiling point of 3600.
Applications: Used in metallurgy, smelting, high-grade magnesia brick, refractories and moisturizing materials manufacturing, It is also widely used in rubber, rubber sheet, rubber products, pharmaceutical industry, food industry, plastic sheet promoter, glass reinforced plastic plasticizer and silicon steel sheet surface coating paint, paper production, steel ball polishing, leather treatment, insulating materials, oils, dyes, ceramics, desiccant, resin, flame retardant and so on.
Heavy magnesium oxide
Ingredient: Made by heating magnesium carbonate. There are two commonly referred to as heavy and light magnesium oxide is heavy magnesium oxide. Magnesium oxide mixture: magnesium oxide 60g, heavy magnesium carbonate 60g.
Properties: White powder; Odorless, tasteless; It absorbs carbon dioxide slowly in the air. Almost insoluble in water, insoluble in ethanol, dissolved in dilute acid.
Function Indications: The acid resistance is stronger than sodium bicarbonate, slow and durable, does not produce carbon dioxide. With gastric acid action to produce magnesium chloride, magnesium ion release, stimulate intestinal peristalsis, with laxative effect. It is suitable for patients with excessive gastric acid disease and gastric and duodenal ulcer accompanied by constipation. For those without constipation, its laxative effect can be corrected by taking calcium carbonate.