Industrial Grade Magnesium Oxide Mgo Used As Dielectric Material And Insulating

Product Specification

Magnesium Oxide Can Be Used As Dielectric Material And Insulating Material

Magnesium oxide is an inorganic substance with multiple functions and is widely used in different fields.

Magnesium oxide is MgO, which has high melting point and boiling point and is insoluble in water. Nano magnesium oxide is used in many fields such as catalysis, adsorption, ceramics, etc. The preparation methods include brine-lime method, brine-ammonia method, magnesia-hydrochloric acid-ammonia method, and magnesium carbonate calcination method, which require control of raw materials, reaction conditions, equipment, and environmental protection.

Specification Parameters (Table)

Preparation method of magnesium oxide

① Brine-lime method

Steps:

Preliminary purified and refined brine and lime milk made from digested and deslagging lime are precipitated in a sedimentation tank. Add flocculant to the obtained slurry, mix thoroughly, and then enter the sedimentation tank for separation. After filtering, washing, drying and crushing, the finished magnesium oxide can be obtained.

Features:

The raw materials are easy to obtain and the process is relatively simple. Suitable for large-scale production.

② Brine-ammonia method

Brine that has been purified to remove impurities such as sulfate, carbon dioxide, and a small amount of boron is used as raw material, and ammonia is used as a precipitant to carry out precipitation reaction in a reactor. A certain amount of seed crystals is added before the reaction and fully stirred. The ratio of brine to ammonia needs to be properly controlled, and the temperature needs to be kept within a certain range. After the reaction is completed, a flocculant is added, and the precipitate is filtered, washed, dried, and crushed to obtain the finished magnesium oxide.

Features:

By controlling the reaction conditions and the ratio of raw materials, magnesium oxide of different purities and particle sizes can be prepared. Attention should be paid to the amount of ammonia water and the control of reaction temperature.

③ Magnesium-hydrochloric acid-ammonia water method

Magnesium ore and anthracite or coke are calcined in a vertical kiln to generate magnesium oxide and carbon dioxide. Magnesium powder (i.e. the product after calcination of magnesia ore) is mixed with water into a slurry and reacted with hydrochloric acid of a specified concentration to prepare a magnesium chloride solution. The magnesium chloride solution reacts with a certain concentration of ammonia water in a reactor to generate magnesium hydroxide precipitate.

After washing, sedimentation, filtration separation, drying and crushing, the magnesium hydroxide precipitate can be obtained as a magnesium oxide product.

Features:

The raw materials are widely available and the preparation process is relatively complicated. The purity and particle size of magnesium oxide can be adjusted by controlling the reaction conditions and the raw material ratio.

④. Magnesium carbonate calcination method

Using magnesia ore, dolomite and the like as raw materials, basic magnesium carbonate is obtained through calcination, digestion, carbonization and other steps. Basic magnesium carbonate is then subjected to thermal decomposition, calcination, crushing and other steps to obtain light magnesium oxide.

Features:

The calcination temperature and carbonization conditions need to be controlled during the preparation process. Lightweight and highly active magnesium oxide can be prepared.

In the process of preparing oxidase, the following points need to be noted:

Raw material selection: Appropriate raw materials should be selected according to production requirements and raw material conditions.

Reaction condition control: The reaction temperature, pressure, time and other conditions need to be strictly controlled to ensure the quality and yield of the product.

Equipment selection and maintenance: Suitable production equipment should be selected and regularly maintained to ensure the stability and safety of the production process.

Environmental protection and energy saving: Environmental protection and energy saving should be emphasized during the preparation process to reduce the generation of waste and energy consumption.

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.