What Compositions of Magnesium Carbonate?

The basic magnesium carbonate has a lot of compositions, the compositions are showed xMgCO3·yMg(OH)2·zH2O. There are some kinds of proportion about x?y?z. It can show some forms, such as 4?1?4, 4?1?5, 4?1?6, 4?1?7, 3?1?3, 3?1?4, etc. The basic magnesium carbonate is white crystal or amorphous particles, non-toxic, tasteless and stable in the air. It is slightly soluble in water. The liquor presents weak alkalinity, freely soluble in acid and ammonium salt solution. It will be broken down and release carbon dioxide when meeting dilute acid. When heating to 300?, it will be resolved, and generate water, carbon dioxide and magnesium oxide. The application of basic magnesium carbonate is wide, it is mainly used for friction, manufacturing glue, enamel, dye, paint, pharmacy, electron, nitric acid, cable, flour improver, new type of magnesium oxide decorative sheet and other industries. It is good drying agent, wear-resistant material and wear resistant material. At the same time, it is one of the raw material to prepare high pure magnesium oxide.

After mixing the solubility magnesium salt and carbonate, it can produce basic magnesium carbonate under a certain conditions. Generally speaking, according to the bulk density of basic magnesium carbonate and the content of magnesium oxide, we measure whether the product is heavy or light. The heavy magnesium carbonate is usually used in food, cosmetic and pharmaceuticals industry. The bulk density of light magnesium carbonate general demands from 6ml/g to 7ml/g, and the bulk density of heavy magnesium carbonate is lower than 1.5 ml/g. We can also say the larger bulk density, the lighter of the product. Generally, light magnesium carbonate is stand by 3MgCO3·Mg(OH)2·3H2O, and heavy magnesium carbonate is stand by can 3MgCO3·Mg(OH)2·4H2O and 4MgCO3·Mg(OH)2·4H2O. The content is figured up by magnesium oxide. The heavy magnesium carbonate should from 40.0? to 43.5?.

Meishen Technology is a private enterprise which develops and produces magnesium oxide professionally. The nanometer active magnesium oxide with high reaction interface is researched by this enterprise. According to the information, this new material has a smaller grain size, a larger surface area and a greater activity than the general magnesium oxide. It can be used the equal part with general magnesium oxide. What’s more, the physical performance of it is superior to the general.

Hebei Meishen Technology Co., Ltd is the professional magnesium oxide supplier and manufacturer.