Results 131 to 140 of about 2,675 (183)

Dynamic properties and microstructural characteristics of cement-coal gangue powder modified silty sand under freeze-thaw cycles. [PDF]

Sci Rep
Wang C, Wang L, Zhang Y, Hu Z, Sun S, Liu R.   +5 more
europepmc   +1 more source

Study on Carbon Removal from Coal Gangue to Purify Kaolin by Flotation with Different Collectors. [PDF]

ACS Omega
Ren X, Shu X, Wu Y, Yu A.
europepmc   +1 more source

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Multitechnique investigation of concrete with coal gangue

Construction and Building Materials, 2021
Abstract Although the research of coal gangue as construction aggregate has been conducted for many years, the fundamental knowledge about the links between the microscopic properties of coal gangue and the macroscopic properties of concrete has not been discovered yet.
Songhui Liu, Xuemao Guan, Yifan Li
exaly   +2 more sources

Preparation and characterization of coal gangue geopolymers

Construction and Building Materials, 2018
Abstract This paper explores the impacts of sodium hydroxide modulus, alkali lye amount and liquid–solid ratio on the strength and microstructure of coal gangue geopolymer materials, involving a total of five sodium hydroxide moduli, four NH/NS mass ratios and seven liquid–solid ratios.
Ma Hongqiang
exaly   +2 more sources

Recycling coal from coal gangue

Filtration + Separation, 2017
Coal gangue is not just solid waste, but also has the potential to yield useful energy. In China, a mining group and a local power plant power plant joined forces with a local university to look at ways to recycle coal gangue to improve the revenue, cut down on resource utilization, and reduce environment pollution.
Liang Shen, Wenbao Lv, Wei Zhou, Jinbo Zhu, Erle Qiao   +4 more
openaire   +1 more source

Coal and Coal Gangue Separation Based on Computer Vision

2010 Fifth International Conference on Frontier of Computer Science and Technology, 2010
We consider the problem of automatically separating coal and coal gangue based on computer vision and design a coal and coal gangue separation system framework based on video. Grayscale histogram, fractal dimension and energy value are extracted as ore features.
Wenhui Li 0002, Ying Wang 0024, Bo Fu, Yifeng Lin   +3 more
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Influence of pozzolanic activity of coal gangue on hydration products in coal gangue-cement system

2010 International Conference on Mechanic Automation and Control Engineering, 2010
Qualitative and quantitative analysis of the composition in the paste of complex cements have been determined by means of X-ray diffraction (XRD),differential scanning calorimetry (DSC) and directly-heating method. Results show that the composition of hydration products in coal gangue-cement complex system is similar to that in pure cement system, but ...
Bingwei Gu, Peiming Wang
openaire   +1 more source

Progress of Coal Gangue Research

2011
China is carrying out a large-scale energy bases in the early stages. Historical experience shows that a large number of coal gangue will be produce in the development of coal process. The coal gangue will occur environmental pollution when the improper disposal.
Jianguo Feng, GuiHua Li, Liping Zhang
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A Study on Release Law of Arsenic in Coal and Coal Gangue

Advanced Materials Research, 2013
The release characteristics of arsenic in coal and coal gangue was discussed in this paper. At firsrt, Coal and coal gangue were sampled in the study area, determination of the arsenic content and sulfur content in the coal. Then the occurrence of the arsenic was analyzed in coal by chemical extraction experiment , the characteristics of mineral ...
Zhi Bin Liu, Hua Mei Su
openaire   +1 more source

Identification and Activation of Coal Gangue and Performance of Limestone Calcined Gangue Cement

2020
Gangue, a typical waste associated with the coal mining process in northern China, was characterized before and after thermal treatment by XRF, XRD, TGA-DSC, and SEM. The pozzolanic reactivity of calcined gangue with different calcined temperature was tested by standard mortar strength and R3 calorimetry test.
Bin Wang, Tongbo Sui, Hao Sui
openaire   +1 more source