读写算（教育教学研究）
讀寫算（教育教學研究）
독사산（교육교학연구）
DUYUXIE
2014年
43期
434-437
,共4页
水氯镁石%氧化镁%氢氧化镁%氨水
水氯鎂石%氧化鎂%氫氧化鎂%氨水
수록미석%양화미%경양화미%안수
bischofite%magnesium oxide%magnesium hydroxide%ammonia
以水氯镁石为原料，采用氨法沉镁、煅烧、添加剂的方法制备医药级氧化镁。考察反应温度、反应pH值、陈化时间对中间体氢氧化镁纯度及产率的影响；并研究煅烧温度和煅烧时间对氧化镁的品质及添加剂的量对氧化镁悬浮性能的影响。研究结果表明，实验条件为：反应温度55℃，pH值9.5，陈化时间2h，煅烧温度1050℃，煅烧时间2h，添加剂量0.8%，制得氧化镁的纯度为99.50%、水化率为2.92%、悬浮性能为3mm/h，达到医药级氧化镁的要求。
以水氯鎂石為原料，採用氨法沉鎂、煅燒、添加劑的方法製備醫藥級氧化鎂。攷察反應溫度、反應pH值、陳化時間對中間體氫氧化鎂純度及產率的影響；併研究煅燒溫度和煅燒時間對氧化鎂的品質及添加劑的量對氧化鎂懸浮性能的影響。研究結果錶明，實驗條件為：反應溫度55℃，pH值9.5，陳化時間2h，煅燒溫度1050℃，煅燒時間2h，添加劑量0.8%，製得氧化鎂的純度為99.50%、水化率為2.92%、懸浮性能為3mm/h，達到醫藥級氧化鎂的要求。
이수록미석위원료，채용안법침미、단소、첨가제적방법제비의약급양화미。고찰반응온도、반응pH치、진화시간대중간체경양화미순도급산솔적영향；병연구단소온도화단소시간대양화미적품질급첨가제적량대양화미현부성능적영향。연구결과표명，실험조건위：반응온도55℃，pH치9.5，진화시간2h，단소온도1050℃，단소시간2h，첨가제량0.8%，제득양화미적순도위99.50%、수화솔위2.92%、현부성능위3mm/h，체도의약급양화미적요구。
Using bischofite as raw material,the preparation of magnesium oxide with medicine-grade was studied.The effects of reaction temperature,pH value and aging time on the intermediate magnesium hydroxide purity and yield were investigated.Calcination temperature,calcination time relationship to the hydration rate of MgO and amount of additive to the suspension performance of MgO were also investigated.The results indicated that the optimum technological conditions were as follows:reaction temperature is 55℃, pH value is 9.5,aging time is 2 h,the calcinations temperature is 1050℃and the calcinations time is 2h. The amount of additive is 0.8%. The results show that the purity of magnesium oxide is 99.50%,the hydration rate is 2.92%and the suspension performance is 3 mm/h,which meet the requirements of magnesium oxide with medicine-grade.
