Non-metallic mineral resources is a kind of precious magnesia, scientific and reasonable use of the resources is of great significance. At present our country for brucite purification technology research in its infancy, exploration stage. From the ore mineral test and laboratory test to industrial production and the development and utilization, which has an exploration process, has a lot of work to do.
With the improvement of environmental quality and strict policies and regulations, flue gas desulfurization is imminent in China. There are a variety of flue gas desulphurization methods, among which wet flue gas desulfurization (WFGD) technology has been widely used in international thermal power plants because of its high desulfurization efficiency. Firstly, the magnesium hydroxide slurry is made by hydration of magnesium oxide from flue gas desulphurization process by magnesium method.
Magnesium is a key industrial metal that can be extracted from a variety of base materials. Magnesite is one of the key sources for the extraction of magnesium compounds. Magnesium compounds can also be extracted from dolomite, forsterite, brucite, magnesium salt lake water and even sea water. The US Geological Survey estimates that the world's magnesite and brucite resources are 12 billion tons and several million tons respectively, while dolomite, forsterite and magnesite-bearing evaporite minerals are at a similar level.
Brucite water content is particularly high, about 31%. Differential thermal analysis (DTA) of brucite shows that the temperature of thermal decomposition and dehydration is between 420 520 C, which is close to the combustion temperature of general articles, so it can be used as fire retardant coatings and flame retardants. Japanese scholars have developed a kind of paint, which is made of cement, brucite and some other substances mixed in appropriate proportion. This kind of coating has the characteristics of light bulk density, good decoration, strong weathering resistance, good fire resistance and no peeling after ignition. It can be used for surface coating of ship and advanced residence.
Magnesium hydroxide is a new kind of filling type flame retardant, introduce the development and application of new type of flame retardant and development
Altogether 107 article， Every page shows：5 article