Influence of calcium/aluminum ratio on microstructure and leaching of 11.3CaO·7Al<sub>2</sub>O<sub>3</sub>

WANG Bo; ZONG Shufeng; SUN Huilan; ZHANG Jianxin

doi:10.3969/j.issn.0438-1157.2014.10.057

您当前的位置：

首页 >

文章列表页 >

Influence of calcium/aluminum ratio on microstructure and leaching of 11.3CaO·7Al₂O₃

更新时间：2025-12-10

- Influence of calcium/aluminum ratio on microstructure and leaching of 11.3CaO·7Al₂O₃
- CIESC Journal Issue 10, Pages: 4183-4190(2014)
- 作者机构：
  
  河北科技大学材料科学与工程学院, 河北省材料近净成形技术重点实验室,河北,石家庄,050018
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.10.057
  CLC： F803.2+1
- Online First：05 October 2014，
  
  Published：05 October 2014
- 稿件说明：
移动端阅览
WANG Bo, ZONG Shufeng, SUN Huilan, et al. Influence of calcium/aluminum ratio on microstructure and leaching of 11.3CaO·7Al₂O₃[J]. CIESC Journal, 2014, (10): 4183-4190. DOI: 10.3969/j.issn.0438-1157.2014.10.057.
DOI：

WANG Bo, ZONG Shufeng, SUN Huilan, et al. Influence of calcium/aluminum ratio on microstructure and leaching of 11.3CaO·7Al₂O₃[J]. CIESC Journal, 2014, (10): 4183-4190. DOI: 10.3969/j.issn.0438-1157.2014.10.057. DOI：

摘要

通过高温烧结法在不同钙铝比（C/A）的条件下合成了铝酸钙熟料。利用XRD对不同C/A下合成产物进行物相分析，对含量进行半定量分析，并计算其晶格常数。采用SEM观察不同C/A下合成产物的显微结构，并通过EDS佐证所得物相；最后研究了不同C/A下氧化铝的溶出性能。结果表明：当C/A<1.6时得到的产物为CaO·Al2O3和11.3CaO·7Al2O3（C11.3A7），且随着C/A的增大，C11.3A7的含量增高，氧化铝的溶出率提高；当C/A＝1.6时得到的产物只有C11.3A7，溶出率达到最大；当C/A>1.6时由于3CaO·Al2O3的形成，溶出率有所降低。C11.3A7晶格中CaO的缺失，促进了溶出反应的进行。

Abstract

Calcium aluminate clinkers with different calcium/aluminum ratios (C/A) were obtained by the high-temperature sintering method. Phase composition

phase semi-quantitative content and crystal constant of sinter were studied with different C/A by XRD. SEM and EDS were used to observe microstructure and element contents. The alumina leaching property of sinter was studied. When C/A was lower than 1.6

the products were CaO·Al2O3 and 11.3CaO·7Al2O3 (C11.3A7) and increase of calcium/aluminum ratio could lead to increase in the content of C11.3A7 and leaching ratio of alumina. When C/A was 1.6

the phase was almost completely C11.3A7 and the leaching rate of alumina reached a maximum. When C/A was higher than 1.6

the products were C11.3A7 and 3CaO·Al2O3

and the leaching rate of alumina decreased accordingly. The lack of CaO in C11.3A7 lattice improved the leaching reaction.

关键词

Keywords

references

Views

536

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Advances in multiscale study of coal gasification slag structure

CO oxidation performance of Pt catalysts supported on CeO2-Al2O3 supports synthesized via urea homogeneous precipitation

Effect of Ca species on sintering characteristics of Zhundong coal ash

Theoretical research on collision behavior and production evolution of titania particles in an industrial oxidation reactor of chlorination process

Enhanced heat transfer performance of vibrating reciprocating helix and micro-morphological analysis of crystallization scale

Related Author

GAO Longfei

BAI Jin

LIU Xingchen

KONG Lingxue

LI Huaizhu

BAI Zongqing

LI Wen

DU Yupeng

Related Institution

State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences

University of Chinese Academy of Sciences

State key Laboratory of Materials-oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University

Zhejiang Zheneng Technology and Environment Group Co., Ltd.

School of Energy and Power Engineering, University of Shanghai for Science and Technology

⁰

Influence of calcium/aluminum ratio on microstructure and leaching of 11.3CaO·7Al2O3

DOI：10.3969/j.issn.0438-1157.2014.10.057

摘要

Abstract

关键词

Keywords

references

Influence of calcium/aluminum ratio on microstructure and leaching of 11.3CaO·7Al₂O₃