Pyrolysis Time To The Conversion Of Magnesium Sulfate
With the wide application of magnesium sulfate in various industries, we found that when using magnesium sulfate, we generally go to the conversion rate, and we will find that the pyrolysis time has a certain impact on the conversion rate of magnesium sulfate. Learn more about it below.
The conditions of reduction pyrolysis were optimized by orthogonal experiments, and the products of reduction pyrolysis were analyzed and characterized by ray diffraction and scanning electron microscopy. The preparation conditions of magnesium oxide were ℃. The pyrolysis temperature was ℃, and the pyrolysis time was to prolong the contact between magnesium sulfate and natural gas. At the same time, the content of natural gas in the reaction system was increased, so the conversion of magnesium sulfate was improved. When the pyrolysis time increased from , , to , the conversion of magnesium sulfate only increased, and the increase in conversion was not obvious. Therefore, In the experiment, the pyrolysis time was selected to grind and sieve magnesium sulfate to obtain magnesium sulfate with different particle sizes.
Then the specified particle size is the particle size of the sample, and the content of magnesium oxide in the reduction pyrolysis product is determined by atomic absorption spectrometer. Under the preparation conditions, the conversion rate of magnesium sulfate is achieved, the purity of magnesium oxide is achieved, the single molecule of magnesium oxide prepared is uniform, the surface is porous and fluffy, and has a high specific surface area. With the increase of reaction time, the conversion rate of magnesium sulfate gradually increased, and the pyrolysis time increased from Using salt lake magnesium chloride and sulfuric acid to prepare magnesium sulfate, dehydrating magnesium sulfate to obtain anhydrous magnesium sulfate, using natural gas to reduce and pyrolyze anhydrous magnesium sulfate to obtain high-purity magnesium oxide The influence of diameter and natural gas gas flow on the conversion rate of magnesium sulfate is high. It has excellent acid and alkali resistance and electrical insulation, good light transmission, and the demand for pure magnesium oxide is increasing year by year. It is in urgent need of development and research. Large coefficient is an important inorganic chemical production and preparation of high-purity magnesia. The research mainly focuses on magnesite from the ore.
Most of the magnesium production methods are to precipitate magnesium first, and then directly calcine. The above methods have the defects of low pyrolysis efficiency and low product purity, while direct pyrolysis of magnesium sulfate has problems such as high pyrolysis temperature and long decomposition time. In view of the problems existing in the preparation of high-purity magnesium oxide, this paper attempts to prepare high-purity magnesium oxide by reducing and pyrolyzing magnesium sulfate with natural gas. First, magnesium sulfate is prepared by reacting magnesium chloride and sulfuric acid in salt lakes. After dehydration, natural gas is used for reduction. Pyrolysis
