In this paper,light-burned magnesia was hydrated and carbonated to afford magnesium bicarbonate liquor,Fe and Ca of which were removed by activated carbon.

• 以菱镁矿煅烧制的得轻烧镁为原料,经消化、碳酸化制得碳酸氢镁溶液,采用活性炭为吸附剂脱除钙、铁等杂质,再热解、煅烧制得高纯氧化镁。