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Effect of Calcination on Pore Structure and Fractal Characteristics of Diatomite
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Zhibo HU1, 2, 3, Shuilin ZHENG4, Yu LI1, Xingqing WEN1, Junxiang HUANG1, Teng HUANG1, 2, 3
Journal of the Chinese Ceramic Society | 2021, 49(7) : 1395 - 1402
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Journal of the Chinese Ceramic Society | 2021, 49(7): 1395-1402
• Special Issue on Mineral Material •
Effect of Calcination on Pore Structure and Fractal Characteristics of Diatomite
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Zhibo HU1, 2, 3, Shuilin ZHENG4, Yu LI1, Xingqing WEN1, Junxiang HUANG1, Teng HUANG1, 2, 3
Affiliations
  • 1.School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
  • 2.Key Laboratory of Waste Treatment and Resource Recycle, Southwest University of Science and Technology, Ministry of Education, Mianyang 621010, Sichuan, China
  • 3.Sichuan Provincial Engineering Lab of Non-Metallic Mineral Powder Modification and High-Value Utilization, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
  • 4.School of Chemical and Environmental Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China

    • HU Zhibo (1987-), male, Ph.D., Lecturer. E-mail:

About Author:

HU Zhibo (1987-), male, Ph.D., Lecturer. E-mail:

Published: 2021-07-20 doi: 10.14062/j.issn.0454-5648.20200986
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Diatomite samples were prepared at different calcination temperatures, with Linjiang diatomite as raw material. Pore structures of the diatomite and calcined samples were characterized by using the low-temperature nitrogen adsorption and the mercury intrusion technologies. With these experimental data, fractal characteristics of the diatomite and the calcined samples were analyzed with FHH model, Menger sponge model and thermodynamic relations model. It was found that the diatomite contained mainly mesoporous and macropores. With increasing calcination temperature, specific surface area and mesoporous volume of the diatomite samples were decreased, while the proportion of the macropores was increased. At the same time, the sample surface roughness was reduced or the surface became smoother and smoother. When the calcination temperature was lower than 600℃, fractal dimension of the mesopore volume and heterogeneity of the mesoporous structure were decreased with increasing calcination temperature. The deformation of the mesoporous structure and the mesoporous volume fractal dimension was seriously accelerated after calcining at 1000℃. When the calcination temperature was higher than 600℃, the fractal dimension of the macroporous pores was reduced, while the roughness and inhomogeneity of macropore surface of the samples were decreased.

diatomite  /  pore structure  /  fractal
胡志波, 郑水林, 李渝, 文兴青, 黄俊翔, 黄腾. 煅烧处理硅藻土的孔道结构及分形特征. 硅酸盐学报, 2021 , 49 (7) : 1395 -1402 . DOI: 10.14062/j.issn.0454-5648.20200986
Zhibo HU, Shuilin ZHENG, Yu LI, Xingqing WEN, Junxiang HUANG, Teng HUANG. Effect of Calcination on Pore Structure and Fractal Characteristics of Diatomite[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (7) : 1395 -1402 . DOI: 10.14062/j.issn.0454-5648.20200986
Appendix
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Year 2021 volume 49 Issue 7
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Article Info
doi: 10.14062/j.issn.0454-5648.20200986
  • Receive Date：2020-12-30
  • Online Date：2026-10-30
  • Published：2021-07-20
Article Data
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History
  • Received：2020-12-30
  • Revised：2021-03-05
Funding
Affiliations
    1.School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
    2.Key Laboratory of Waste Treatment and Resource Recycle, Southwest University of Science and Technology, Ministry of Education, Mianyang 621010, Sichuan, China
    3.Sichuan Provincial Engineering Lab of Non-Metallic Mineral Powder Modification and High-Value Utilization, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
    4.School of Chemical and Environmental Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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