激发剂作用下的盐石膏废渣的水化过程

陈侠; 李瑞宁; 陈丽芳; 袁青彬; 王利莎; 刘迪

环境化学

激发剂作用下的盐石膏废渣的水化过程

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陈侠, 李瑞宁, 陈丽芳, 袁青彬, 王利莎, 刘迪. 激发剂作用下的盐石膏废渣的水化过程[J]. 环境化学, 2011, 30(10): 1725-1730.

引用本文:

陈侠, 李瑞宁, 陈丽芳, 袁青彬, 王利莎, 刘迪. 激发剂作用下的盐石膏废渣的水化过程[J]. 环境化学, 2011, 30(10): 1725-1730.

CHEN Xia, LI Ruining, CHEN Lifang, YUAN Qingbin, WANG Lisha, LIU Di. HYDRATION PROCESS OF SALT GYPSUM DREGS UNDER THE EFFECT OF ACTIVATOR[J]. Environmental Chemistry, 2011, 30(10): 1725-1730.

Citation:

CHEN Xia, LI Ruining, CHEN Lifang, YUAN Qingbin, WANG Lisha, LIU Di. HYDRATION PROCESS OF SALT GYPSUM DREGS UNDER THE EFFECT OF ACTIVATOR[J]. Environmental Chemistry, 2011, 30(10): 1725-1730.

激发剂作用下的盐石膏废渣的水化过程

1.
天津科技大学海洋科学与工程学院, 天津, 300457;
2.
天津市海洋资源与化学重点实验室, 天津, 300457

HYDRATION PROCESS OF SALT GYPSUM DREGS UNDER THE EFFECT OF ACTIVATOR

1.
College of Marine Science and Engineering, Tianjin University of Science & Technology, Tianjin, 300457, China;
2.
Tianjin Key Laboratory of Marine Resources and Chemistry, Tianjin, 300457, China

摘要: 运用Kondo模型,研究了在激发剂硫酸钠作用下盐石膏废渣的水化过程.盐石膏废渣的水化过程分为3个阶段,第1、第3阶段受扩散作用控制;第2阶段受相边界反应控制.分别研究了激发剂溶液浓度和温度对相边界反应阶段水化速率的影响,结果表明,在0-0.60 mol·L-1范围内,增大激发剂溶液浓度可使水化速率常数k增大,在12 ℃≤T≤34 ℃范围内,升高温度会使水化速率常数k减小.对盐石膏废渣水化产物的X射线衍射分析表明,水化过程中有复盐Na4Ca(SO4)3生成.复盐作为异质颗粒,降低了二水硫酸钙的成核表面能势垒,加速了水化.
- 盐石膏 /
- 激发剂 /
- 水化 /
- 相边界反应
Abstract: The hydration process of salt gypsum dregs under the effect of anhydrous sodium sulfate activator was studied through the Kondo model. The hydration process contained three stages. The first and the third stages were controlled by diffusion, and the second stage was controlled by phase boundary reaction. The influences of the activator concentration and the temperature on the hydration rate were studied. The hydration rate constant k increased with increasing activator concentration in the range from 0 mol·L-1 to 0.60 mol·L-1 and decreased with the increase of the temperature in the range from 12 ℃ to 34 ℃. The X-Ray diffraction analysis indicated that the double salt Na4Ca(SO4)3 was generated during the hydration progress. The double salt promoted the hydration as the alloplasm grain to reduce the nucleation surface energy barrier.
- salt gypsum /
- activator /
- hydration /
- phase boundary reaction

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激发剂作用下的盐石膏废渣的水化过程

1. 天津科技大学海洋科学与工程学院, 天津, 300457;
2. 天津市海洋资源与化学重点实验室, 天津, 300457

收稿日期: 2010-12-03

关键词:

盐石膏 /
激发剂 /
水化 /
相边界反应

摘要: 运用Kondo模型,研究了在激发剂硫酸钠作用下盐石膏废渣的水化过程.盐石膏废渣的水化过程分为3个阶段,第1、第3阶段受扩散作用控制;第2阶段受相边界反应控制.分别研究了激发剂溶液浓度和温度对相边界反应阶段水化速率的影响,结果表明,在0-0.60 mol·L-1范围内,增大激发剂溶液浓度可使水化速率常数k增大,在12 ℃≤T≤34 ℃范围内,升高温度会使水化速率常数k减小.对盐石膏废渣水化产物的X射线衍射分析表明,水化过程中有复盐Na4Ca(SO4)3生成.复盐作为异质颗粒,降低了二水硫酸钙的成核表面能势垒,加速了水化.

English Abstract

HYDRATION PROCESS OF SALT GYPSUM DREGS UNDER THE EFFECT OF ACTIVATOR

1. College of Marine Science and Engineering, Tianjin University of Science & Technology, Tianjin, 300457, China;
2. Tianjin Key Laboratory of Marine Resources and Chemistry, Tianjin, 300457, China

Received Date: 2010-12-03

Keywords:

Abstract: The hydration process of salt gypsum dregs under the effect of anhydrous sodium sulfate activator was studied through the Kondo model. The hydration process contained three stages. The first and the third stages were controlled by diffusion, and the second stage was controlled by phase boundary reaction. The influences of the activator concentration and the temperature on the hydration rate were studied. The hydration rate constant k increased with increasing activator concentration in the range from 0 mol·L-1 to 0.60 mol·L-1 and decreased with the increase of the temperature in the range from 12 ℃ to 34 ℃. The X-Ray diffraction analysis indicated that the double salt Na4Ca(SO4)3 was generated during the hydration progress. The double salt promoted the hydration as the alloplasm grain to reduce the nucleation surface energy barrier.

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激发剂作用下的盐石膏废渣的水化过程

HYDRATION PROCESS OF SALT GYPSUM DREGS UNDER THE EFFECT OF ACTIVATOR

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激发剂作用下的盐石膏废渣的水化过程

English Abstract

HYDRATION PROCESS OF SALT GYPSUM DREGS UNDER THE EFFECT OF ACTIVATOR

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