Coal gasification slag-based composite cement under the regulation of grinding speed grinding kinetics: Parameter optimization, hydration mechanism and properties analysis

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology Pub Date : 2025-08-12 DOI:10.1016/j.apt.2025.105029

Xiaowei Gu , Ziyang Hu , Zhihang Hu , Zhijun Li , Jianping Liu , Xiaowei Ge , Hao Wang

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Abstract

In this study, a low-carbon cement with energy-saving and emission reduction characteristics was synthesized from coal-based solid waste coal gasification slag (CGS). The influence of the grinding kinetic process of coal gasification slag on powder properties, compressive properties, hydration reactions, and environmental impacts was investigated. The results showed that the synergistic hydration of coal gasification slag and cement particles at a grinding speed of 350 rpm resulted in the 28-day compressive strength of composite cement reaching its maximum value, which was 14.9 % higher than that of the control. Furthermore, the environmental impact assessment showed that replacing 30 % of cement with coal gasification slag could reduce emissions by approximately 273.921 kg CO²/t, representing a reduction rate of about 29.45 %. This study supports the development of the solid waste recycling industry and contributes to achieving the goals of efficient resource utilization and environmental protection.

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磨速调节下煤气化渣基复合水泥的磨动动力学：参数优化、水化机理及性能分析

本研究以煤基固体废煤气化渣（CGS）为原料，合成了具有节能减排特性的低碳水泥。研究了煤气化渣粉碎动力学过程对粉体性能、压缩性能、水化反应及环境影响的影响。结果表明：煤气化矿渣与水泥颗粒在350 rpm磨速下协同水化作用，复合水泥28天抗压强度达到最大值，比对照提高14.9%；环境影响评价结果表明，以煤气化渣替代30%的水泥可减少约273.921 kg CO2/t的排放，减量率约为29.45%。本研究支持固体废物回收产业的发展，有助于实现资源高效利用和环境保护的目标。

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来源期刊

Advanced Powder Technology 工程技术-工程：化工

CiteScore

9.50

自引率

7.70%

发文量

424

审稿时长

55 days

期刊介绍： The aim of Advanced Powder Technology is to meet the demand for an international journal that integrates all aspects of science and technology research on powder and particulate materials. The journal fulfills this purpose by publishing original research papers, rapid communications, reviews, and translated articles by prominent researchers worldwide. The editorial work of Advanced Powder Technology, which was founded as the International Journal of the Society of Powder Technology, Japan, is now shared by distinguished board members, who operate in a unique framework designed to respond to the increasing global demand for articles on not only powder and particles, but also on various materials produced from them. Advanced Powder Technology covers various areas, but a discussion of powder and particles is required in articles. Topics include: Production of powder and particulate materials in gases and liquids(nanoparticles, fine ceramics, pharmaceuticals, novel functional materials, etc.); Aerosol and colloidal processing; Powder and particle characterization; Dynamics and phenomena; Calculation and simulation (CFD, DEM, Monte Carlo method, population balance, etc.); Measurement and control of powder processes; Particle modification; Comminution; Powder handling and operations (storage, transport, granulation, separation, fluidization, etc.)