Results 171 to 180 of about 309,554 (217)
Some of the next articles are maybe not open access.
Recycling coal from coal gangue
Filtration + Separation, 2017Coal 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 +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, 2010We 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 +3 more
openaire +2 more sources
Influence of pozzolanic activity of coal gangue on hydration products in coal gangue-cement system
2010 International Conference on Mechanic Automation and Control Engineering, 2010Qualitative 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
A Study on Release Law of Arsenic in Coal and Coal Gangue
Advanced Materials Research, 2013The 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
Progress of Coal Gangue Research
2011China 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
openaire +1 more source
The concentration of fluorine in coals and gangue of China
Journal of Coal Science and Engineering (China), 2008A detailed comparison was done between the data about the F in coals published at home and abroad, and associated with the special situation in China. An introduction also was made to illuminate the forming, occurrence and accumulation of the F in coals and its potential hazard to human and environment.
Wei-hua Ao +3 more
openaire +1 more source
Identification and Activation of Coal Gangue and Performance of Limestone Calcined Gangue Cement
2020Gangue, 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
Performance of cemented coal gangue backfill
Journal of Central South University of Technology, 2007Possibility of cemented gangue backfill was studied with gangue of Suncun Coal Mine, Xinwen Coal Group, Shandong, and fly ash of nearby thermal power plant, in order to treat enormous coal gangue on a large scale and to recovery safety coal pillars. The results indicate that coal gangue is not an ideal aggregate for pipeline gravity flow backfill, but ...
Qin-li Zhang, Xin-min Wang
openaire +1 more source
Environmental Geochemistry and Health
With the continual advancement of coal resource development, the comprehensive utilization of coal gangue as a by-product encounters certain constraints. A substantial amount of untreated coal gangue is openly stored, particularly acidic gangue exposed to rainfall.
Yanwen, Guo +3 more
openaire +2 more sources
With the continual advancement of coal resource development, the comprehensive utilization of coal gangue as a by-product encounters certain constraints. A substantial amount of untreated coal gangue is openly stored, particularly acidic gangue exposed to rainfall.
Yanwen, Guo +3 more
openaire +2 more sources
Research on a Coal Gangue Identification Device
Applied Mechanics and Materials, 2013The paper designed a coal gangue identification device. It firstly proposed to use the guide groove to guide, grayscale sensor to recognize and the corresponding mechanical actuators to realize automatic separation of coal and waste rocks. Compared with other separation device, it firstly put forward solutions to realize the linear arrangement of ...
Gang Feng Zheng +3 more
openaire +1 more source