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Preparation of Polysilicate Aluminum Chloride from Coal Gangue and Its Flocculating Performance Assessment
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Qin NING1, Caixia LI1, Xin LIU2, Bangguo WANG3, Yan HONG1, Xingfeng WANG1
Journal of the Chinese Ceramic Society | 2023, 51(1) : 204 - 214
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Journal of the Chinese Ceramic Society | 2023, 51(1): 204-214
• Research Articles •
Preparation of Polysilicate Aluminum Chloride from Coal Gangue and Its Flocculating Performance Assessment
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Qin NING1, Caixia LI1, Xin LIU2, Bangguo WANG3, Yan HONG1, Xingfeng WANG1
Affiliations
  • 1.Institute of mining technology, Liaoning Technical University, Fuxin 123000, Liaoning, China
  • 2.China Coal Tianjin Design & Engineering Co. LTD, Tianjing 300120, China
  • 3.College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China

    • NING Qin (1997-), female, Master candidate. E-mail:

About Author:

NING Qin (1997-), female, Master candidate. E-mail:

Published: 2023-01-20 doi: 10.14062/j.issn.0454-5648.20220375
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Polysilicate aluminum chloride (PASC) flocculant was prepared with a coal gangue for the resource utilization of coal gangue. The effects of alkali cement ratio, roasting temperature, acid dosage, acid leaching temperature, liquid to solid ratio and acid leaching time on the performance of PASC were investigated. The physicochemical properties and microstructure of PASC were analyzed and the flocculation mechanism of PASC was discussed. The results show that the turbidity removal rate of PASC to coal slime water can reach 99.08% under the optimum conditions (i.e., alkali cement ratio of 0.9, roasting temperature of 900 ℃, acid dosage of 1.75 g/g, acid leaching temperature of 49 ℃, liquid to solid ratio of 8.9, and acid leaching time of 2.8 h). Since PASC is an amorphous polymer formed by the complexation of polysilicic acid, aluminum ions and hydroxyl groups, it has a rich spatial network structure and its flocculation mechanism includes adsorption bridging, trapping and sweeping, and charge neutralization.

polysilicate aluminum chloride  /  coal gangue  /  slime water  /  turbidity removal rate  /  response surface
宁琴, 李彩霞, 刘鑫, 王帮国, 洪琰, 王兴峰. 煤矸石制备聚硅酸氯化铝及其絮凝性能. 硅酸盐学报, 2023 , 51 (1) : 204 -214 . DOI: 10.14062/j.issn.0454-5648.20220375
Qin NING, Caixia LI, Xin LIU, Bangguo WANG, Yan HONG, Xingfeng WANG. Preparation of Polysilicate Aluminum Chloride from Coal Gangue and Its Flocculating Performance Assessment[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (1) : 204 -214 . DOI: 10.14062/j.issn.0454-5648.20220375
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Year 2023 volume 51 Issue 1
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Article Info
doi: 10.14062/j.issn.0454-5648.20220375
  • Receive Date：2022-05-10
  • Online Date：2026-10-20
  • Published：2023-01-20
Article Data
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History
  • Received：2022-05-10
  • Revised：2022-06-13
Funding
Affiliations
    1.Institute of mining technology, Liaoning Technical University, Fuxin 123000, Liaoning, China
    2.China Coal Tianjin Design & Engineering Co. LTD, Tianjing 300120, China
    3.College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding:

LI Caixia (1974-), female, Ph.D., Professor. E-mail:
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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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