Preparation process of basic magnesium carbonate

Raw material preparation:High purity magnesium oxide and sodium carbonate need to be prepared.Magnesium oxide can be obtained by calcining magnesium ore or magnesium salts,while sodium carbonate can be extracted from natural alkali ore or obtained through chemical synthesis.

          The preparation process of basic magnesium carbonate usually involves the following key steps:

          Raw material preparation:High purity magnesium oxide and sodium carbonate need to be prepared.Magnesium oxide can be obtained by calcining magnesium ore or magnesium salts,while sodium carbonate can be extracted from natural alkali ore or obtained through chemical synthesis.

          Stirring and mixing:Add an appropriate amount of magnesium oxide and sodium carbonate in a certain proportion to the reaction vessel and stir and mix.The purpose of this step is to ensure that the two raw materials can be evenly mixed,thereby increasing the reaction rate.

          Reaction:Add the mixture to the reaction vessel,control the temperature at 70-80℃,and continue the reaction for 1-2 hours.This step is to fully react the raw materials to generate basic magnesium carbonate.

          Precipitation:After the reaction is completed,the generated basic magnesium carbonate will precipitate at the bottom of the reaction vessel,and then be filtered and collected.

          Washing:Wash the precipitate multiple times with a large amount of water to remove impurities and residual reactants,ensuring the purity of the product.

          Drying:Put the washed alkaline magnesium carbonate precipitate into an oven for drying,so that its moisture content meets the required standard.

          Crushing:Finally,the dried alkaline magnesium carbonate is crushed by a grinder to obtain the desired product particle size.

          It should be noted that different manufacturers may make adjustments or supplements to the above steps based on specific production conditions and product quality requirements.For example,changing the reaction temperature and pressure to improve the thermal decomposition efficiency of the solution may affect the quality and yield of the final product.