Lian Zhi
2006
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Multipurpose Utilization of Mineral Resources
Abstract
The experimental research preparation of light magnesium carbonate is performed by using magnesium sulphate waste liquor from Yuanjiang Nickel Mine as raw material and adopting "MgSO_4-NaHCO_3"technological process.Test results showed that the major factors influencing the reaction of magnesium sulphate and sodium bicarbonate are reaction time,reaction temperature and the concentration of magnesium sulphate.The optimum reaction conditions are as follows:concentration of Mg~(2+) is 1.25mol/L,reaction temperature is 75℃,reaction time is 180min.Under the optimal technological conditions,the recovery of MgO in the product can achieve 90.42%.The product quality can achieve standard of HG/T2959-2000.