The process of obtaining magnesium hydroxide from magnesite

摘要

"The process of obtaining magnesium hydroxide from magnesite.The present invention relates to a process for obtaining magnesium hydroxide from the thermal decomposition of magnesite in the form of briquettes and reaction with water vapor.Without generating waste in solution.The briquettes are prepared from a wet mixture of magnesite.The water and binder (sodium silicate), after forming the briquettes are subjected to two heat treatments for 2 hours: (1) between 120 to 130 198 C and (2) between 700 - 830 198 C; next,Are ground and sieved to obtain a powder characterized as caustic magnesia (MgO) and containing a small fraction of magnesium hydroxide; the powder is subjected to a reaction with water vapor nu...M jacketed reactor and fixed bed or in a batch reactor, producing a magnesium hydroxide, useful as antichama polymers.