首页|Preparation of calcium carbonate with microstructure and nanostructure from carbide slag for CO2 sequestration by using recyclable ammonium chloride

Preparation of calcium carbonate with microstructure and nanostructure from carbide slag for CO2 sequestration by using recyclable ammonium chloride

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Based on the composition characteristics of carbide slag and the application of polyvinyl chloride,a method of preparing calcium carbonate with microstructure and nanostructure by using carbide slag as a raw material and ammonium chloride as a leaching agent was proposed.The factors for the preparation of calcium carbonate and the effects of different conditions on the crystal phase,grain size,and morphology of calcium carbonate were systematically studied.The results showed that the nanosized calcium carbonate was prepared at 60 mL/min,25 ℃,no additional ammonia,and 60 min.The product of spherical vaterite was in accordance with the relevant standards for the industrial precipitation of cal-cium carbonate.Moreover,the reuse of carbonation filtrate was realized.The crystal phase,grain size,and morphology of the carbonation product could be controlled by adjusting the reaction conditions.The manuscript provided a new idea for resource utilization of carbide slag and preparing nanocalcium carbonate.

Carbide slagAmmonium chlorideCyclic utilizationMicro and nano structureProduct control

Jin Yao、Qiuju Chen、Li Zeng、Wenjin Ding

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Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle,Southwest University of Science and Technology,Mianyang,621010,China

Sichuan Engineering Lab of Non-metallic Mineral Powder Modification and High-value Utilization,Mianyang,621010,China

School of Architecture and Civil Engineering,Chengdu University,Chengdu,610106,China

Sichuan Science and Technology ProgramSichuan Science and Technology ProgramSichuan City Solid Waste Energy and Building Materials Conversion Technology Engineering Research Center,Chengdu UniversitySichuan City Solid Waste Energy and Building Materials Conversion Technology Engineering Research Center,Chengdu University

2023NSFSC03482023JDRC0070GF2022ZD002GF2022ZC002

2024

10.1016/j.partic.2023.11.017

颗粒学报(英文版)
中国颗粒学会　中国科学院过程工程研究所

颗粒学报(英文版)

CSTPCD
影响因子：0.632
ISSN：1674-2001
年,卷(期)：2024.90(7)
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