Common rumors of magnesium hydroxide

Rumor: Magnesium hydroxide cannot react with carbon dioxide.


Rejection: Magnesium hydroxide can react with carbon dioxide. The following is a literature description.


Using dolomite as raw material to produce light magnesium carbonate is to digest dolomite lime to produce calcium hydroxide and magnesium hydroxide suspension, carbonize with kiln gas containing carbon dioxide to produce calcium carbonate and magnesium bicarbonate, and separate calcium and magnesium carbonate with different solubility, then pyrolysis magnesium bicarbonate remaining in the solution.


The precipitation process of hydrated magnesium carbonate from magnesium hydroxide suspension and carbon dioxide reaction crystallization was studied experimentally, and the effects of different operating conditions on the particle size distribution characteristics of final products were discussed. The results show that the precipitated crystalline products are magnesium carbonate trihydrate (MgCO3.3H2O).