탄산마그네슘의 제조연구 I 경질탄산마그네슘의 제조조건

Studies on Synthesis of Magnesium Carbonate. I. Factorial Analysis on the Preparation of Exrta-light Magnesium Carbonate

Optimum reaction conditions for the preparation of extra-light magnesium carbonate from bittern by the reaction with sodium carbonate solution was found to be as follows: reaction temperature 33o molar ratio(Mg+2/CO2-3) 0.8, reaction time 14 minutes, drying temperature 99o and bittern concentration 17%. While Korean pharmacopoeia regulates the bulkiness above 12 mililiters per gm., our experimental result shows above 45 mililiters. Electron microscopic shapes were compared with products prepared under various reaction conditions, and it was found that there exists correlation between bulkiness and particle shape such as the lighter the power the more pillar crystalline, the heavier the powder the more amorphous and the intermediate was a mixture of them.