Food grade magnesium hydroxide preparation process and application areas

With the technology development in the biological field in China now, the application field of magnesium hydroxide will be more and more extensive, especially the food grade magnesium hydroxide is in great demand.

Application areas:

Magnesium hydroxide is generally in the form of white amorphous powder or colourless hexagonal column crystal, the production raw material is very wide, low cost, widely used in food, medicine, chemical and drinking water treatment and other fields.

As magnesium hydroxide is a medium to strong base (magnesium hydroxide solubility is very small, the solution is very weak alkaline, sometimes as a weak base treatment), so its solution is relatively small corrosive and alkaline, so in the food can be used as acidity regulator, as a buffer, neutralization, curing and so on. Food grade magnesium hydroxide is relatively active, has a relatively loose structure, high purity, good whiteness, low impurity content and does not contain harmful elements such as Pb and As.

Preparation process:

1) Industry often to seawater and cheap calcium hydroxide solution (lime milk) reaction, can get magnesium hydroxide precipitation.

2) Dolomite preparation of magnesium hydroxide new process, can get a better purity, better dispersion, and flake magnesium hydroxide products.