Water magnesite(Hydromagnesite) is a kind of natural hydrated basic magnesium carbonate which is rare in the world, commonly known as “magnesium white”. Its appearance for the white mass, earthy luster, “snow-white” or “white-flower”, density of 2.24g.cm3, Mohs hardness of 3.5, melting point of 730 ℃, monoclinic crystal structure 123l. Crystal structure 123l. The ore contains porous, put it into the water with small bubbles floating. Early researchers gave the chemical formula of hydromagnesite mainly in the form of 3MgCO3-Mg(OH)2-3H2O, 4MgCO3-Mg(0H)2-3H2O, and 4MgCO3-Mg(OH)2-4H2O, and later, after a large number of experts’ certifications, the currently recognized formula is that it contains four water molecules, i.e., 4MgCO3-Mg(OH)2-4H2O. In addition, the ore contains a small amount of CaCO3, Fe2O3, SiO2 and other impurity components.
Characteristics of Hydromagnesite:
First, high magnesium content – in the current proven magnesium-containing non-metallic minerals, water magnesite magnesium content ranks fourth, second only to magnesite (Mg(OH)2), magnesite (MgCO3) and magnesium olivine (Mg2SiO4).
Second, rich reserves – in China’s Qinghai-Tibet Plateau salt lake area has a number of Hydromagnesite deposits. Only in Tibet Bango lake area, Hydromagnesite reserves in more than 100 million tons, belongs to the large deposits, but also in the salt lake in Tibet in the highest reserves of one of the four minerals, has an important industrial development value.
Third, low impurity content – calcined products in addition to the original impurities, mainly for magnesium oxide and gas carbon dioxide and water, is environmentally friendly products. One of the original impurities CaCO3, Fe2O3, SiO2 content is very low, its application generally does not have an impact. If you need to prepare high-purity products, because of its low content of impurities, it is also easier to remove, so Hydromagnesite is a natural high-quality mineral resources for the preparation of magnesium materials, with good prospects for development and value of use.
Applications
Water magnesite(Hydromagnesite) has high magnesium content and low impurity content, making it a high quality mineral resource for the preparation of magnesium materials. Its applications include the preparation of magnesium products such as nano-magnesium oxide, nano-magnesium hydroxide, flame retardant, activated magnesium oxide, and heavy basic magnesium carbonate. These products are widely used in various fields and are characterized by green and low cost.
