磁化对无机钙垢结晶形态的影响研究  

Influence of magnetization on the crystallization form of inorganic calcium scale

作　　者：刘鑫[1] 王亮[1,2] 张朝晖[1,2] 赵斌[1,2] 郭幸斐[1,2] 王晓琦[1] 

机构地区：[1]天津工业大学环境与化学工程学院.天津300387 [2]天津工业大学中空纤维膜材料与膜过程省部共建国家重点实验室培育基地,天津300387

出　　处：《工业水处理》2013年第11期29-32,共4页Industrial Water Treatment

基　　金：国家自然科学基金重点项目(51138008);国家自然科学基金青年基金项目(51108315);天津市科技支撑计划重点项目(11ZCGYSF01500)

摘　　要：试验考察了高梯度磁场中磁化对无机钙垢结晶过程和结晶形态的影响,并进一步阐述了磁化影响无机钙垢结晶形态的机理。试验结果表明,磁化处理首先加快了CaCO3晶体的成核速率,但随后减慢了晶体的生长速率。与未磁化溶液相比,磁化处理后溶液中析出的CaCO3晶体是质地疏松的文石而不是致密的方解石。磁化对成垢阳离子Ca2+影响更大,但当成垢阳离子含量较高时,磁化效果急剧下降。The influence of magnetization on crystallization process and inorganic calcium scale crystalline morphol ogy in a high gradient magnetic field has been investigated and the mechanism of magnetization on inorganic calcium scale crystalline morphology has been further expounded. The results indicate that magnetization process accelerates the CaCO3 crystal nucleation rate ,but then slows down the growth rate of crystal. Compared with unmagnified solu tion, it is found that the CaCO3 crystal which was separated from the magnetically treated solution is aragonite with loose texture, instead of calcite with compact texture. Magnetization has more influence on scaled cations Ca2＋ , but when the scaled cation content is higher, the magnetizing efficiency gets low sharply.

关 键 词：磁化 阻垢 高梯度磁场 无机钙垢 

分 类 号：TQ028.93[化学工程]