THE COAL INDUSTRY AND THE COMPREHENSIVE UTILIZATION OP COAL IN CHINA

Author(s):  
Wu Jing ◽  
King Wu
2013 ◽  
Vol 652-654 ◽  
pp. 1527-1532 ◽  
Author(s):  
Guan Li Xu ◽  
Chuan Min Sun ◽  
Yao Sun ◽  
Hai Liao

Coal gangue is a kind of solid waste which is discharged from coal mining and coal washing. Dumped gangues do not only take a large land occupation but also pollute air and water. Treatment and utilizing of coal gangues has become the major issue for the coal industry to resolve. As major experimental material in this study, the coal gangue from Dawukou, Shizuishan, Ningxia province, China had been analyzed to have high-alumina content, and it could been used as alumina constituent for the preparation of sulphoaluminate cement. In this paper, alite-sulphoaluminate cements were prepared at 1330°C using coal gangue, limestone and gypsum as major main materials, fluorite and barite as minor materials. The result shows that major clinker minerals of the cement are sulphoaluminate, alite and belite, while major hydrate is ettringite, compressive strength of the cement is 48.9MPa after 7d. These experiments provide a new method of coal gangue comprehensive utilization.


2011 ◽  
Vol 71-78 ◽  
pp. 2530-2533
Author(s):  
Peng Shen ◽  
Ze Qiang Fu ◽  
Bao Gao ◽  
Jing Zhi

The coal-dominated energy structure in China will not be changed for a long period of time due to the resource situation. The Chinese government officially released the first "Coal Industry Policy” on November 29, 2007, which made ​​it clear that 13 large coal bases would be constructed in China, and circular economy and resource comprehensive utilization would be priority developed. Therefore, environmental protection guide for developing circular economy in energy (coal) chemical industry base should be established to ensure the development of circular economy, protect the consumption of resource and energy, reduce emission of pollutants, and guide the development of energy (coal) chemical industry base. Based on the results of the present study, the article describes the methodology, framework, technical infrastructure and basic content of the “Environmental Protection Guide for Developing Circular Economy in Energy (coal) Chemical Industry Base”.


2012 ◽  
Vol 524-527 ◽  
pp. 3626-3630
Author(s):  
Mei Feng Zhu ◽  
Guo Hao Zhao

The low carbon economy is the basic way to realize the sustainable development. At present, the comprehensive utilization of coal resources is the important content to promote the low carbon economy development. This paper analyzes the external conditions of coal resources comprehensive utilization. First, the economy development needs a large quantity of coal in China, and the coal-dominant energy consumption pattern will not change in the short term. Second, there is a certain delay in adjusting the industrial structure. Third, the sunk cost is higher in the transformation of coal industry. The paper believes that comprehensive utilization of coal resources is the important segment to promote the development of China's low carbon economy under the restriction of the objective conditions.


2012 ◽  
Vol 616-618 ◽  
pp. 1604-1608 ◽  
Author(s):  
Jian Wang ◽  
Zeng Kai Zhang ◽  
Ju’e Guo

Industrial circular economy is based on industry chain and realized through the coordination of upstream and downstream, with the purpose of comprehensive utilization of coal and other byproducts. This paper analyzes the circular economy development mode from the perspective of industry (industrial cycle economy), with Shenhua Ningxia Coal Industry Group as an example, which constructs Ningdong coal base mainly based on coal industrial circular economy. Its experiences provide certain reference for coal industry and other interrelated industries.


1964 ◽  
Vol 20 (4) ◽  
pp. 49-51
Author(s):  
Pierre R. Bretey
Keyword(s):  

1955 ◽  
Vol 11 (1) ◽  
pp. 87-89
Author(s):  
Ernest Oppenheimer
Keyword(s):  

2018 ◽  
Vol 11 (49) ◽  
pp. 257-272
Author(s):  
Kubrin S.S. ◽  
◽  
Kudryashov V.V. ◽  
Tereshkin A.I. ◽  
◽  
...  
Keyword(s):  

Author(s):  
E. S. Filimonov ◽  
O. Yu. Korotenko ◽  
O. A. Rumpel ◽  
O. N. Blazhina

Introduction. The problem of high mortality from cardiovascular diseases is caused, among other things, by asymptomatic atherosclerosis, which proceeds latently for a long time and manifests itself as a serious vascular catastrophe, which is of particular importance for people working at production facilities with difficult and dangerous working conditions.The aim of the study was to assess the risk factors for atherosclerosis and the state of the vascular wall in the workers of the main professions of coal enterprises in the South of Kuzbass.Material and methods. In total, the study included 384 people (men), of whom 266 were the workers in coal mines in the South of Kuzbass and 118 people who were not employed in the coal industry, aged 40 to 55 years. The diagnosis of atherosclerosis was carried out on the ultrasound system “Vivid E9” of the manufacturing company GE using a linear sensor for measuring the thickness of the intima-media complex and visualization of atherosclerotic plaques. To identify significant risk factors, anthropometric, anamnestic data, indices of lipid and carbohydrate metabolism, and the presence of arterial hypertension were studied.Results. Significant differences in the frequency of asymptomatic atherosclerosis in the form of an increase in intima-media thickness by more than 1 mm and / or the presence of atherosclerotic plaques in both groups were not found: 60.2% among the miners and 62.3% among non-coal mining workers (p=0.703); at the same time, the percentage of detection of atherosclerotic plaques in arteries was significantly lower among coal workers — 46.9% versus 60.5% among people in the comparison group (p=0.016). The common risk factors for all examined subjects were arterial hypertension and increased level of glycated hemoglobin; in turn, in coal miners additional risk factors were increased values of low density lipoproteins and waist-hip index, as well as burdened heredity for cardiovascular diseases, and among the individuals not employed in the coal industry it was smoking.Conclusions. The most significant risk factors for atherosclerosis in coal industry workers were arterial hypertension, raised values of glycated hemoglobin, low density lipoproteins and waist-hip index, as well as burdened heredity for cardiovascular diseases. Significant differences in the frequency of asymptomatic atherosclerosis in the form of an increase in the thickness of the intima-media complex of the main arteries and the presence of atherosclerotic plaques in both groups were not established, but the percentage of the detection of atherosclerotic plaques was lower among coal miners.The authors declare no conflict of interests.


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