Meishen Technology Company

China, Chinangin, VIC 054600
+8613833967259
+8613833967259
Meishen
https://www.72meihouwang.com/index/news/newsshow/id/395.html

Method 1: magnesite (MgCO3) was mixed with coke and roasted to obtain magnesium oxide. After water was added to form mud, CO2 was passed into magnesium bicarbonate. After filtration, the filtrate was heated to obtain basic carbonate precipitation.

Method 2: The dolomite is heated with a small fire, only the magnesium carbonate is decomposed and crushed, and the magnesium oxide is changed into magnesium bicarbonate and dissolved by interaction with water and CO2 under 5 ~ 6 atmospheres, and the remaining calcium carbonate is obtained by filtration and heating.

Method 3: The same amount of crystalline magnesium sulfate and crystalline sodium carbonate were dissolved in 10 times of water respectively, and heated to 60 ? ~ 80 ? for full mixing. When CO2 gas was produced, precipitation was produced. The precipitate is filtered out, mixed with hot water at 70 ? ~ 80 ?, filtered again, precipitated, thoroughly washed and dried at 50 ? ~ 60 ?.

Method 4: Preparation from brine after making salt. In the brine, sulfuric acid is added, hydrogen is added, bromine is removed by heating, then sodium carbonate is added, stirring, and the reaction is made. At this time, basic magnesium carbonate precipitation is generated, filtered, washed with water, and then dried at above 50?, precipitated magnesium carbonate (heavy magnesium carbonate) can be produced.

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