Alumina leaching properties of calcium sulphoaluminate

CHU Weiqin; ZHANG Xuezheng; MA Dongdong; SUN Huilan; WANG Bo

doi:10.11949/j.issn.0438-1157.20160452

您当前的位置：

首页 >

文章列表页 >

Alumina leaching properties of calcium sulphoaluminate

更新时间：2025-11-26

- Alumina leaching properties of calcium sulphoaluminate
- CIESC Journal Issue 1, Pages: 460-466(2017)
- 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：10.11949/j.issn.0438-1157.20160452
  CLC： F803.2+1
- Online First：05 January 2017，
  
  Published：05 January 2017
- 稿件说明：
移动端阅览
CHU Weiqin, ZHANG Xuezheng, MA Dongdong, et al. Alumina leaching properties of calcium sulphoaluminate[J]. CIESC Journal, 2017, (1): 460-466.
DOI：

CHU Weiqin, ZHANG Xuezheng, MA Dongdong, et al. Alumina leaching properties of calcium sulphoaluminate[J]. CIESC Journal, 2017, (1): 460-466. DOI： 10.11949/j.issn.0438-1157.20160452.

摘要

使用分析纯CaCO3、Al2O3与CaSO4·2H2O配料，在1375℃、保温2 h的条件下合成了纯物相硫铝酸钙3CaO·3Al2O3·CaSO4（C4A3S），对其物相组成和微观形貌进行了表征。并探究了碳碱浓度、苛碱浓度、溶出温度、溶出时间、粒度等因素对C4A3S氧化铝溶出性能的影响。结果表明：C4A3S的氧化铝溶出性能随着碳碱与苛碱浓度的增加先提高，之后趋于稳定。粒度越小，溶出率越高。与七铝酸十二钙12CaO·7Al2O3（C12A7）相比，C4A3S的孔洞状结构使其氧化铝更易溶出，在10 min时氧化铝溶出率即达到98%以上，且溶出所需的碳碱浓度与溶出温度均低于C12A7。在最佳条件：碳碱80 g·L-1、苛碱10 g·L-1、溶出温度80℃、溶出时间10 min下，C4A3S的氧化铝溶出率为98.76%。

Abstract

Analytically pure carbonate calcium

alumina and dihydrate calcium sulfate were used to synthesize calcium sulphoaluminate(3CaO·3Al2O3·CaSO4

C4A3S) at 1375℃ for 2 h.The phase compositions and microstructure were characterized.The effects of carbon alkali concentration

alkali concentration

leaching temperature

leaching time and particle sizes on the alumina leaching properties of C4A3S were explored.The results show that the alumina leaching ratio of C4A3S increases with the increase of concentration of sodium carbonate and alkali

then trends to stable.The leaching ratio becomes higher when the particle size of clinker decreases.Compared with 12CaO·7Al2O3(C12A7)

the alumina of C4A3S is easier to be dissolved because of its porous structure

and the alumina leaching ratio is up to 98% under 10 min leaching.The concentration of sodium carbonate and the dissolution temperature of C4A3S is lower than that of C12A7.The alumina leaching ratio of C4A3S could reach 98.76% under the optimum conditions:sodium carbonate 80 g·L-1

alkali 10 g·L-1

dissolution temperature 80℃ and dissolution time 10 min.

关键词

Keywords

references

Views

231

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

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

Influence of distance between Ni/Al2O3 and ZnO for deep hydrogenation of sulfur-containing phenanthrene

Alumina structure and surface property regulation for catalyzing methanol dehydration to dimethyl ether

Preparation and thermal properties of degradable flexible phase change films

Reaction process of CH4 on the surface of Fe2O3/Al2O3 oxygen carrier in chemical looping combustion: ReaxFF-MD simulation

Related Author

DU Yupeng

GE Chunliang

DING Leilin

ZHANG Li

HU Jiajun

YU Fengping

LIN Yi

WANG Feng

Related Institution

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

Zhejiang Zheneng Technology and Environment Group Co., Ltd.

State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology

College of Textile Engineering, Taiyuan University of Technology

College of Chemical Engineering and Technology, Taiyuan University of Technology

⁰