Manufacturing method of magnesium oxide
I. Introduction
Magnesium oxide is an important inorganic chemical, widely used in ceramics, electronics, medicine, environmental protection and other fields. With the continuous development of science and technology, the manufacturing methods of magnesium oxide have been improved and optimized. In this paper, we will introduce the manufacturing methods of magnesium oxide, including precipitation method, hydrolysis method, gas-phase method, etc., and analyze the advantages and disadvantages of the various methods, to provide reference for the actual production.
II. Precipitation method
Precipitation method is a common manufacturing method of magnesium oxide, the principle is to add precipitant to the solution containing magnesium ions, so that the magnesium ions precipitated, after filtration, washing, drying and other steps to get magnesium oxide products. Commonly used precipitants include sodium hydroxide, ammonia and so on. The advantage of
precipitation method is that the process is simple, easy to operate, and the magnesium oxide products with high purity can be obtained. However, the method also has some disadvantages, such as high consumption of precipitant, high production cost, and the waste liquid produced needs to be treated, environmental protection pressure.
Third, hydrolysis method
Hydrolysis method is through the reaction of magnesium metal and water to generate magnesium hydroxide, and then calcined to get magnesium oxide method. Specific steps are as follows: add magnesium metal to water, react to generate magnesium hydroxide precipitate, filter, wash, dry the precipitate, and finally calcine at high temperature to get magnesium oxide. The advantage of the
hydrolysis method is that high purity magnesium oxide products can be obtained, and at the same time, the generation of waste liquid is avoided, and the environmental protection is better. However, the production cost of this method is high, and it needs to consume a lot of energy and water resources.
Four, gas-phase method
Gas-phase method is a method of preparing magnesium oxide through gas-phase reaction, the principle is to introduce magnesium metal vapor and oxygen into the reactor, and then react under high temperature and pressure to generate magnesium oxide. The advantages of the
vapor phase method are high product purity and uniform particle size distribution, while it can be produced continuously with high production efficiency. However, the equipment investment of this method is larger and the production cost is higher.
V. Other methods
In addition to the above methods, there are some other magnesium oxide manufacturing methods, such as sol-gel method, microwave method. Each of these methods has its own advantages and disadvantages, and the suitable method can be selected according to the specific production needs and conditions.
VI.CONCLUSION
There are various manufacturing methods of magnesium oxide, and each method has its advantages and disadvantages and scope of application. In the actual production, the suitable manufacturing method should be selected based on the comprehensive consideration of the purity of the product, particle size distribution, production cost and other factors. At the same time, with the continuous progress of science and technology and the improvement of environmental protection consciousness, the development of more environmentally friendly, efficient and economical magnesium oxide manufacturing methods is also the future development trend.
