Coal gangue chemical properties

Properties and Hydration Mechanism of

Home Journals JNMES Properties and Hydration Mechanism of Autoclaved Aerated Concrete Containing Coal Gangue and Fly Ash. JNMES. About; Aims and Scope; Editorial Board; Instructions for Authors; Submission; Current Issue; Archive; Citation List; JOURNAL METRICS. Impact Factor (JCR) 2019: 0.259 ℹ Impact Factor (JCR): The JCR provides quantitative tools

Influence of different sources of coal gangue used Influence of different sources of coal gangue used as aluminosilicate powder on the mechanical properties and microstructure of alkali-activated cement B. J. Frasson, R. C. A. Pinto, J. C. Rocha * Civil Engineering Department, ValoRes Waste Materials and Development of Sustainable Materials Laboratory, Federal University of Santa Catarina, Florianópolis (Brazil)

Investigation of hydraulic-mechanical properties of paste

Investigation of hydraulic-mechanical properties of paste backfill containing coal gangue-fly ash and its application in an underground coal mine Xinguo Zhang Shandong University of Science And Technology, [email protected] Jia Lin University of Wollongong, [email protected] Jinxiao Liu Shandong University of Science And Technology,

Properties and Hydration Mechanism of Autoclaved

Home Journals JNMES Properties and Hydration Mechanism of Autoclaved Aerated Concrete Containing Coal Gangue and Fly Ash. JNMES. About; Aims and Scope; Editorial Board; Instructions for Authors; Submission; Current Issue; Archive; Citation List; JOURNAL METRICS. Impact Factor (JCR) 2019: 0.259 ℹ Impact Factor (JCR): The JCR provides quantitative tools for ranking, evaluating,

Shrinkage and Strength Properties of Coal Gangue Ceramsite It is a promising and effective method for waste treatment by using coal gangue to make lightweight aggregate concrete. However, lightweight aggregate concrete with low-density coal gangue ceramsite is prone to cracking during volume shrinkage, which limits its application in the construction industry. In an attempt to resolve the problem of cracking in shrinkage, this study investigated the Reclaiming Subsidized Land: An Evaluation of Coal L. Xu, C. Huang, R. Zhang et al., "Physical and chemical properties and distribution characteristics of heavy metals in reclaimed land filled with coal gangue," Transactions of the Chinese Society of Agricultural Engineering, vol. 30, pp. 211–219, 2014. View at: Google Scholar

(PDF) Identification of Coal and Gangue by Feed-forward Based on the chemical properties of coal and gangue and the di Coal-gangue separation is an essential step in the coal preparation process. However, existing manual selection and mechanical

Effects of chemistry and mineral on structural The correlation between the composition and properties of coal gangue during calcination is essential for its applications. In this paper, the effect of chemistry and minerals of coal gangues on the thermal behavior, structural evolution and chemical states of silicon and aluminum during the calcination process were systematically investigated.

Characteristics of Alkali-Activated Coal Gangue-Slag Mortarsproperties [1], excellent resistance to chemical erosion [2], and fire resistance [3]. A large number of studies have shown that the commonly used raw materials for alkali-activated include slag, fly ash, metakaolin [4–6], and some researchers have also applied lime [7], red mud [8], coal gangue [9–11], and rice husk ash [12], and the research of alkali-activated binary materials is more

Processes | Free Full-Text | Experimental Study and

From the perspective of resource recovery and environmental protection, coal gangue-fly ash cemented backfill coal mining has become an important direction for the green development of coal mines in recent years. Analysis of the rheological parameters of backfill slurry is the basic principle to design a backfill pipeline system. Coal gangue-fly ash backfill slurry has a mass concentration of Evaluation of Mechanical Properties and Coal gangue, a solid waste produced in coal production, had caused serious environmental pollution due to accumulation on dumps. Embankment filling can solve the problem while significantly consuming the amount of coal waste for mining. The main purpose of this study is to investigate the mechanical properties and microscopic structure of coal gangue when it is MECHANICAL PROPERTIES AND Alkaline cementitious materials were prepared by an activation of burned coal gangue with highly alkaline solution. The activation mechanism, mechanical properties, microstructures and microstructural characters of alkaline cementitious materials were studied. Results show that the activation product is an amorphous alkali-aluminosilicate gel with a structure similar to that of zeolitic Synthesis and mechanical properties of mullite ceramics Coal mining and washing are the main process of coal gangue production. It accounts for 10%‒15% of the coal composition. In China, coal gangue discharge was about 300 million t/a, causing pollution of water, soil, and so on. 2 - 5 In addition to some organic compounds and metal oxides, there is a large amount of SiO 2 and Al 2 O 3 .

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