Performance of ball-milling-modified coal gangue on Pb
As the numerous industrial solid waste, coal gangue caused serious environmental pollution in China, while the it could be modified and reused as an …
Synthesis of low-temperature, fast, single-firing body for porcelain …
Coal gangue is a major industrial solid waste in China, causing great environment pollution. According to phase diagram theory, a low-temperature, fast, single-firing body mix for porcelain stoneware tiles was designed in the quaternary system CaO—MgO— Al 2 O 3 —SiO 2, using coal gangue as the main raw material.The coal …
Preparation of porous cordierite ceramic with acid-leached coal gangue
The effect of impurities in coal gangue on the sintering and properties (porosity and compressive strength) of porous cordierite ceramics has been investigated by adjusting the amount of impurities by controlling the acid–gangue ratio during acid leaching. The sintering behavior and microstructure of the porous ceramics have been characterized …
Materials | Free Full-Text | Newly Generated Ca-Feldspar …
Coal gangue is a solid waste with low carbon content discharged during the course of the coal mining process. The resource utilization of coal gangue could solve …
Glass-ceramics fabricated by efficiently utilizing coal gangue
The mullite glass-ceramics fabricated with coal gangue and γ-Al 2 O 3 showed the bending strength from 64 MPa to 218 MPa as adding the La 2 O 3 from 0 mol% to 10 mol% [Citation 18]. The porous mullite ceramic fabricated from coal gangue and bauxite showed the flexural strength of 66.06 to 133.61 MPa varied with corn starch …
Characterization studies on coal gangue for sustainable …
Global rise in greenhouse gas emissions (GHG) is triggered mainly due to the consumption of fossil fuels for power generation and domestic usage. Among the fossil fuels, coal is a primary contributor to global GHG with substantial emissions generated during its mining and combustion process. Coal gangue, a residue produced during the …
Preparation and application of microfiltration porous coal gangue…
The ceramic membrane is widely used in the field of domestic sewage treatment due to its high flexural strength, acid and alkali corrosion resistance, easy cleaning, and other advantages. This article uses coal gangue and loess as the main raw material (coal gangue:loess = 8:2), calcium carbonate as the pore‐forming agent, and …
Preparation of high closed porosity ed ceramics from coal gangue
The XRF and XRD results are shown in Table 1 and Fig. 1, respectively.The coal gangue used in this research is mainly composed of SiO 2 (59.18 wt%) and Al 2 O 3 (23.95 wt%). Small amounts of alkali and alkaline earth metal oxides, such as MgO and CaO, and transition metal oxides (6.4 wt% Fe 2 O 3) are also present.In addition, as …
Environment-oriented low-cost porous mullite ceramic
Porous mullite ceramic supports for filtration membrane were successfully fabricated via recycling of coal gangue and bauxite at sintering temperatures from 1100 to 1500 °C with corn starch as pore-forming agent.The dynamic sintering behaviors, phase evolution, shrinkage, porosity and pore size, gas permeation flux, microstructure and …
Preparation of porous cordierite ceramic with acid …
The effect of impurities in coal gangue on the sintering and properties (porosity and compressive strength) of porous cordierite …
Research progress of high-value utilization of coal gangue …
The coal gangue in China is the core field of bulk solid waste comprehensive utilization due to its massive stock and emission, high concentration of output, small proportion of high-value-added utilization, and outstanding environmental impact. Hence, the prospect of resource utilization of coal gangue is broad. The existing disposal …
Synthesis of low-temperature, fast, single-firing body for porcelain …
Coal gangue is a major industrial solid waste in China, causing great environment pollution. According to phase diagram theory, a low-temperature, fast, single-firing body mix for porcelain stoneware tiles was designed in the quaternary system CaO--MgO--Al₂O₃--SiO₂, using coal gangue as the main raw material.
Coal and Gangue Classification Based on Laser-Induced …
Coal, Energy, Layers, Machine learning, Spectroscopy. Abstract. During the extraction and processing of coal, a large amount of solid waste, collectively known as …
Integrated utilization of coal gangue for synthesis of β …
ABSTRACT. To realize the effective utilization of the industrial waste coal gangue, in this study, β-SiAlON multiphase ceramic. material was successfully prepared using coal gangue as main raw ...
Synthesis and mechanical properties of mullite ceramics with coal
International Journal of Applied Ceramic Technology is a ceramics journal from the American Ceramic Society (ACerS) publishing applied ceramics research. Abstract With coal gangue and high alumina refractory solid wastes as raw materials, needle-like mullite powder, with an average diameter of about 1 μm, was synthesized at …
Basic principle, progress, and prospects of coal gangue ceramic
Coal gangue is a solid waste that is rich in SiO 2 and Al 2 O 3, making it a potential substitute for the preparation of ceramic proppants. The use of coal gangue to prepare ceramic proppants can reduce the cost of ceramic proppants and benefit environmental protection.
Comprehensive utilization and environmental risks of coal …
Abstract. The amount of coal gangue, a by-product of coal mining and washing, is rapidly increasing with the growing trend of energy consumption. The …
Preparation of high-strength ceramsite from coal gangue …
The coal gangue and and dyeing sludge were thoroughly combined in a mixer for 2 h, after which approximately 30mass% water was added and the mixture was stirred into a mud ball using a glass rod. ... Development of highly porous mullite whisker ceramic membranes for oil-in-water separation and resource utilization of coal …
Preparation of CaO–Al2O3–SiO2 glass ceramics from coal gangue
Highlights. Up to 70% coal gangue was used as the staring material of glass ceramics. The prepared CaO–Al 2 O 3 –SiO 2 glass ceramics has a crystal size of about 4 μm. The glass ceramics has crystalline gehlenite (Ca 2 Al 2 SiO 7) as the major phase. The glass ceramics shows better properties than natural marbles and granites. The glass ...
Porous ceramics derived from steel slag/coal gangue …
Fabrication of ceramic materials with interconnected pores is necessary to improve thermal energy storage efficiency in high-temperature infiltration technology. In the present study, industrial wastes such as coal gangue, steel slag, etc., were selected as the raw materials to prepare ceramics with interconnected pores.
Production of high-value-added lightweight glass
Lightweight glass ceramic was fabricated from phosphorus tailings and coal gangue as raw materials in this work. The effects of phosphorus tailing ratios (50 wt.% - 100 wt.%) and heat-treatment temperatures (1130 °C – 1170 °C) on the pore morphology, properties and toxicity evaluation of lightweight glass ceramics were investigated.
Research Progress on Comprehensive Utilization of Coal Gangue
Coal gangue is one of the largest mine solid wastes in China, and its discharge and stockpiling have caused resource waste, environmental pollution and other problems. Starting from the resource characteristics of coal gangue, this paper systematically discusses the ways and research status of coal gangue resource …
Integrated utilization of coal gangue for synthesis of β …
In this work, based on the analysis of previous research results, we successfully prepared a β-SiAlON multiphase ceramic material for which coal gangue is the main raw component. First, we performed a thermodynamic analysis to identify the products that would be obtained under different conditions. Next, we analyzed the raw …
The preparation of porcelain brick by coal gangue of iron …
The content of coal gangue in the porcelain brick can be as high as 80%. The water absorption rate of the porcelain bodies is lower than 0.3%, their rupture modulus is …
Fabrication and Characterization of Ceramic Floor Tiles from Coal Gangue
Abstract. Coal gangue was used as the main material to fabricate floor tiles in this paper. The mixture of coal gangue, quartz, feldspar and bentonite, with the weight percentage of 55, 20, 20 and ...
Synthesis of low-temperature, fast, single-firing body for …
Abstract. Coal gangue is a major industrial solid waste in China, causing great environment pollution. According to phase diagram theory, a low-temperature, fast, …
Evolution mechanism of pore structure in sintered coal gangue
Preparation of porous cordierite ceramic with acid-leached coal gangue. J. Korean Ceram. Soc., 57 (4) (2020), pp. 447-453, 10.1007/s43207-020-00032-1. Jul. View in Scopus Google Scholar [13] B.-Y. Ma, et al. Preparation and properties of porous mullite ceramics with high-closed porosity and high strength from fly ash via reaction synthesis …
Enhancement of coal gangue performance by surface micro …
Coal gangue is a waste derived from coal mining, and its unreasonable disposal usually causes serious land occupation and environmental pollution. Using coal …
Low-carbon utilization of coal gangue under the carbon
Coal gangue, produced during coal mining and processing [1, 2], is one of the most extensively produced solid wastes in China [1, 3], accounting for approximately 10%‒20% of raw coal production [].The accumulation of coal gangue causes serious environmental, social, and economic problems in the coal mining area [].Heavy metals …
The Sustainable Utilization of Coal Gangue in Geotechnical …
Among coal mining-related wastes, coal gangue (CG) is the heterogeneous waste generated during the mineral processing or coal washing phase of coal mining. A …
