Proposal of a new centrifugal dewatering system for slurry using electric charge of clay particles

提出一种利用粘土颗粒电荷的新型浆料离心脱水系统

• 批准号: 12450195
• 负责人: FUKAGAWA Ryouichi
• 金额: $ 3.71万
• 依托单位: Ritsumeikan University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12450195/
• 关键词: Centrifugal force; Dewatering; Slurry; Clay; Water content; SS; Electric change; Self consolidation; 泥水; 遠心脱水

In this research, it aimed to develop the new dewatering system which uses the centrifugal force. The main conclusions derived from this research are as follows:1) A new centrifugal dewatering machine was designed and manufactured, and it was improved in the adhesion reduction of processed soil to the rubber membrane of the system.2) The effectiveness of the new dewatering system was verified by a series of experiments using a bed soil of Lake Biwa, Kasaoka clay, and kaolin etc.3) A theory to explain the centrifugal dewatering system was formed besed on a self consolidation theory, the Mikasa Theory.4) The design method of centrifugal dewatering machine was proposed based on the newly developed self consolidation theory in a centrifugal stress field.5) The influence of an electric charge of clay particles on adhesion was confirmed by the experiments of electro-deposition.

本研究旨在开发利用离心力的新型脱水系统。本研究得出的主要结论如下：1）设计并制造了一种新型离心脱水机，并在降低处理土对系统橡胶膜的粘附性方面进行了改进。2）通过一系列实验验证了新型脱水系统的有效性，这些实验使用了日本琵琶湖床土、笠冈粘土和高岭土等。3）基于自固结理论形成了解释离心脱水系统的理论，4）基于离心应力场自固结理论，提出了离心脱水机的设计方法电沉积实验证实了粘土颗粒的电荷对粘附力的影响。