Scale, factor intensity and efficiency: an empirical study of the chinese coal industry

1993 ◽  
Vol 25 (3) ◽  
pp. 325-334 ◽  
Author(s):  
Yanrui Wu
Keyword(s):  
Empirical Study ◽  
Coal Industry ◽  
Scale Factor ◽  
Factor Intensity ◽  
Chinese Coal

China Coal Industry and Sustainable Development

2012 ◽  
Vol 512-515 ◽  
pp. 1568-1573
Author(s):  
Fei Zhang ◽  
Yan Bing Wang
Keyword(s):  
Sustainable Development ◽  
Circular Economy ◽  
Coal Industry ◽  
Scientific Model ◽  
The Sustainable Development ◽  
Existing Problems ◽  
Low Efficiency ◽  
Chinese Coal ◽  
Coal Enterprises ◽  
Mode Of Production

At the beginning of the new century, China’s economic growth accelerated. The demand of coal as a basic energy is keeping increase [1]. With the progress of the mining technology, changed the past low efficiency, backward mode of production, but there are still many adverse factors that restrict to the sustainable development of coal industry in China [2]. Through detailed analysis of the current situation of China coal industry, find out existing problems of Chinese coal industry sustainable development, and using the basic principle [3], to find suitable to Chinese coal industry sustainable development scientific proposition -- Circular Economy [4], using circular economy this scientific model to guide Chinese coal enterprises transformation and development, making Chinese coal enterprises realize sustainable development.

Study on the properties of coal-based high-purity graphite

2019 ◽  
Vol 9 (6) ◽  
pp. 668-674 ◽  
Author(s):  
Qili Wang ◽  
Mingquan Yu ◽  
Jiannan Gong ◽  
Fengtao Zhang
Keyword(s):  
High Purity ◽  
Raw Materials ◽  
Coal Tar ◽  
Value Added ◽  
Coal Industry ◽  
Coal Pitch ◽  
Skeletal Density ◽  
Pitch Coke ◽  
Chinese Coal ◽  
Value Added Products

As one of the major value-added products of coal processing and utilization, coal pitch coke and coal tar pitch are used as raw materials to prepare high-purity graphite. The structure characteristics and properties were measured by experiments. The results show that the high-purity graphite has excellent physical properties: the skeletal density of 1.81–1.91 g/cm3, the Shore hardness of 45.5–66.6 Hs, the flexural strength of 33.0–46.1 MPa, the compressive strength of 65.6–75.8 MPa, the ash content of 67–181 ppm, the thermal expansion coefficient of 3.71–4.11 × 10–6/°C, and the electrical resistivity of 8.72–12.13 μΩ · m. Consequently, coal-based graphite materials have excellent properties and good application prospects in solar energy industry, which is an effective exploration for the transformation and upgrading of Chinese coal industry.

Comprehensive Evaluation of Optimal Allocation to Coal Resource Based on Stepwise Order Relations Analysis

2011 ◽  
Vol 71-78 ◽  
pp. 1983-1988
Author(s):  
Jing Yi Miao ◽  
Jie Long Guo ◽  
Ying Zong Liu
Keyword(s):  
Optimal Allocation ◽  
Comprehensive Evaluation ◽  
Coal Industry ◽  
Evaluation Index System ◽  
Industrial Safety ◽  
Major Theme ◽  
Resource Monitoring ◽  
Order Relations ◽  
Coal Resource ◽  
Chinese Coal

Optimal allocation of coal resource is a major theme that can not be ignored to healthy development of Chinese coal industry. Based on the basis of analyzing the main factors that affect optimal allocation of coal resource, besides from five respects which are the sustainable development, new-type industrialization, industrial safety, recycling economy, and resource monitoring, this paper advances an evaluation index system of optimal allocation of coal resource. Further stepwise order relations analysis and comprehensive analysis with gain characteristic are also used in comprehensive evaluation. Finally it supplies a method that can be used for reference to quantitative evaluation of optimal allocation of coal resource.

Development of the Large-Scale Coal Base and the Modern Mine in China: The Present Situation and Future Tasks

2012 ◽  
Vol 524-527 ◽  
pp. 3066-3069
Author(s):  
Xian Ping Yuan
Keyword(s):  
Energy Supply ◽  
Large Scale ◽  
Production Capacity ◽  
Present Situation ◽  
Primary Energy ◽  
Coal Industry ◽  
Coal Production ◽  
Advanced Technologies ◽  
Primary Energy Supply ◽  
Chinese Coal

The consumption of coal is increasing continuously with the development of economy. Coal accounting for 70% of total primary energy supply is the most key energy source in China. Thus, the modernization construction of coal industry is very important for China. The goal of this study is to research the present situation and future tasks of large-scale coal bases and modern mines construction in China. The results show that China is orderly constructing 14 large-scale coal bases. In the large-scale coal bases, more and more modern mines have been built, but Chinese coal industry modernization level still remains a lower level. At the same time, the results show that modern mine construction is not balanced in different bases. Based on the existing experience, therefore, promoting coal production capacity, applying the advanced technologies or methods, and advancing further modern mine construction, are major tasks of Chinese coal industry at present and in the future.

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