摘要
以显微照像技术考察了流动硬水体系中负溶解性盐ＣａＣＯ_３在紫铜、黄铜、铝、铸铁和聚四氟乙烯加热表面的沉积形态，发现在惰性表面的沉积为无定形体，在硬金属表面的沉积为规则的结晶体。以紫铜作实验试件，研究了溶液中Ｍｇ^（２＋）对ＣａＣＯ_３结垢的影响，结果表明适量Ｍｇ^（２＋）可明显抑制结垢生长，说明Ｍｇ^（２＋）可作为一种方便的阻垢剂用于特定场合的钙垢控制。
By means of photo-stereo microscopic technique,the deposit morphology of calcium carbonate on different material surfaces was studied.The system considered was flowing hard water saturated with calcium carbonate which was of inversed solubility and which scaled on surface upon heating the solution.Copper,brass,aluminium,cast iron and teflon were the chosen materials tested.It seemed that the deposit on inert surfaces was amorphous vaterite but regular crystals appeared on metallic surfaces.The influence of Mg￣(2+) to calcium carbonate scaling was experimentally investigated using copper as the test sqecimen.The results showed that a proper amount of Mg￣(2+) inhibited scaling obviously,indicating that Mg￣(2+) might be taken as a convenient antifouling reagent for the control of calcium carbonate scaling in specific situations such as sea water handling.
出处
《高校化学工程学报》
EI
CAS
CSCD
1994年第4期313-317,共5页
Journal of Chemical Engineering of Chinese Universities
关键词
表面材质
镁离子
碳酸钙
阻垢
沉积形态
Photomicroscope,Deposit Morphology,Magnesium ion,Antifouling,Calcium carbonate scaling
