用蒙脱土酸处理法制备洗用4A沸石过程中石英问题的探讨  

The Discussing of Quartz Problem in the Synthesis of Detergent-Used Zeolite 4A from Montmorillonite

作　　者：黄明[1] 刘志城[1] 董家禄[1] 须沁华[1] 

机构地区：[1]南京大学化学系,南京210093

出　　处：《无机化学学报》2000年第5期837-842,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家863计划项目!(No.715-064-0120)。

摘　　要：Zeolite 4A is the main substitute builders for sodium tripolyphosphate in non-phosphated detergent. It can be manufactured from savageness clay and the cost may greatly be reduced by this method. In the manufacturing process of detergent-used zeolite 4A from montmorillonite, it is important to remove quartz from clay or zeolite, otherwise the product will not qualified for detergent additive. This article provides two methods, the calibration curve method of quartz content by XRD and the calibration curve method of aluminium ion concentration in synthetic system, to determine the quartz content. Then three methods of removing quartz were studied on, including the methods of whirlwind during the mill run, filtration after alkalinization of silicic acid gel and sedimentation of zeolite.Zeolite 4A is the main substitute builders for sodium tripolyphosphate in non-phosphated detergent. It can be manufactured from savageness clay and the cost may greatly be reduced by this method. In the manufacturing process of detergent-used zeolite 4A from montmorillonite, it is important to remove quartz from clay or zeolite, otherwise the product will not qualified for detergent additive. This article provides two methods, the calibration curve method of quartz content by XRD and the calibration curve method of aluminium ion concentration in synthetic system, to determine the quartz content. Then three methods of removing quartz were studied on, including the methods of whirlwind during the mill run, filtration after alkalinization of silicic acid gel and sedimentation of zeolite.

关 键 词：蒙脱土 酸处理法 洗涤剂助剂 4A沸石 石英 

分 类 号：TQ649.45[化学工程—精细化工]