摘要
本文提出以单位质量菱镁粉与一定量ＭｇＣｌ２·６Ｈ２Ｏ溶液作用后，在固定时间内终止水化，并用标准化学分析方法（Ｍｏｒｈ法）测定反应前后溶液中Ｃｌ－减少的物质的量──△ｎｃｌ－（ｍｍｏｌ／ｇ菱镁粉）表示ＭｇＯ的活性。此值越大，ＭｇＯ活性越大。
There is short of standard of magnisia actirity. According to the formation of magnesium oxychloride cement,the magnesium oxide,which can react to bittern tofrom many kind of hydrolytic product is called the active magnesium oxide. Because thatreason,a definition was put forward in the paper. When magnisia of one unit weight reactto certain guantity of solution of magnesium chloride,in a fixed time the reaction was ended and the quantity of chloride ion was determination by Mohr method;the reduced quontity of CI- between before and after reaction[e. g. △nCl- (m mol/g. magnisia) ] is the activityof magnisia. The more is the value of △ncl-,the more is the activity.
关键词
氯氧镁水泥
菱镁粉
活性
测定
magnisia activity
magnesium oxychloride cement
determination of chloride ion
