Product Overview

Magnesium oxide is an inorganic substance with the chemical formula MgO. It is an oxide of magnesium and an ionic compound. It is a white solid at room temperature. Magnesium oxide exists in nature in the form of periclase and is the raw material for magnesium smelting.

Magnesium oxide has high fire-resistant insulation properties. It can be transformed into crystals after being burned at a high temperature of more than 1000°C, and it becomes dead-burned magnesium oxide (magnesia) or sintered magnesium oxide when it rises to 1500-2000°C.

Product classification

Classification: divided into light magnesium oxide and heavy magnesium oxide. Light magnesium oxide is loose in volume and is a white amorphous powder. Odorless, tasteless and non-toxic. Density 3.58g/cm3. Insoluble in pure water and organic solvents, the solubility in water increases due to the presence of carbon dioxide. Soluble in acid and ammonium salt solutions. Converted into crystals after high temperature burning. Magnesium carbonate complex salt is generated when it encounters carbon dioxide in the air. Heavy magnesium oxide is compact in volume and is a white or beige powder. It is easy to combine with water and easily absorbs water and carbon dioxide when exposed to air. It is easy to gel and harden when mixed with magnesium chloride solution.

Specification Parameters (Table)

Application areas

It is used to determine sulfur and pyrite in coal and sulfur and arsenic in steel. It is used as a standard for white pigments. Light magnesium oxide is mainly used as a raw material for preparing ceramics, enamel, refractory crucibles and refractory bricks. It is also used as a polishing agent, adhesive, coating, and filler for paper, and a promoter and activator for chloroprene rubber and fluororubber. After mixing with magnesium chloride and other solutions, it can be made into magnesium oxide water. It is used as an antacid and laxative in medicine, and is used for gastric acid hyperacidity and duodenal ulcers. It is used as a catalyst and a raw material for the manufacture of magnesium salts in the chemical industry. It is also used in the manufacture of glass, dye residue, phenolic plastics, etc. Heavy magnesium oxide is used for firing powder grinding and half-rollers in the rice milling industry. It is used in the construction industry to make artificial chemical floors, artificial marble heat-resistant boards, sound insulation boards, and the plastic industry as fillers. It can also be used to produce other magnesium salts.

Production Techniques

Magnesium oxide can be produced through various methods, including the carbonation process, calcination of magnesium hydroxide, soda ash process, and ammonium bicarbonate process. The choice of method often depends on the specific needs and characteristics of downstream industries. For example, the carbonation process can produce lightweight magnesium oxide, while the calcination of magnesium hydroxide can produce high-purity magnesium oxide.

Theory (Background)

Magnesium oxide consists of Mg²⁺ ions and O²⁻ ions bound together through ionic bonds to form a crystal lattice. At high temperatures, magnesium oxide exhibits excellent physical and chemical stability, making it a model system for studying crystal vibration characteristics. Additionally, magnesium oxide is widely regarded as the most effective metal stabilizer compared to silicate cement, lime, and others due to its superior buffering capacity, cost-effectiveness, and ease/safety of operation.

Services

Magnesium oxide enterprises should establish an application technology department with professional technical service personnel. These personnel should possess extensive knowledge and experience in production processes, technology, and magnesium oxide applications, enabling them to provide professional technical support and solutions to customers.

Packaging and Storage

Magnesium oxide should be stored in a cool, well-ventilated warehouse, avoiding direct sunlight and high temperatures. The warehouse should be kept away from fire sources and heat to prevent magnesium oxide from undergoing chemical reactions or fires due to high temperatures. The packaging of magnesium oxide should be intact to prevent leakage, damage, or dropping during transportation. According to the HG/T 2573-2012 standard, the packaging of industrial light magnesium oxide must comply with specific regulations.

Preventive Measures

1. Industrial Protection: Operators should wear appropriate personal protective equipment, such as dust masks, chemical safety goggles, breathable work clothes, and rubber gloves, during industrial use.
2. Medical Monitoring: When using magnesium oxide preparations in the medical field, they should be used as prescribed by a doctor to avoid long-term or excessive use, which may cause harm to the human body.
3. Environmental Monitoring: During storage and transportation, clear emergency response plans should be in place to address potential leaks or other emergencies.