Clean coal technology is a crucial way to effectively use coal, much helpful in reducing carbon emission and to realize “dual-carbon” goals. This paper, based on Patsnap patent dataset, uses TAM model to analyze global clean coal technologies from technical advances, patent identification and market, and compares them globally, and points out China’s technical weaknesses, core technologies and future trend. The present clean coal technologies are upgrading to mature stage from developing stage. China’s related patents have issues, such as bad quality, lack of core competitiveness, weak R&D capabilities. Carbon reduction and pollution control are two hotspots in patent application. The future clean coal technology should be directed to comprehensive use of coal. Enterprises shall play a leading role in R&D, and enhance carbon reduction and coal comprehensive use technologies. Governments shall issue supportive polices for the two technical domains, including favorable financial and taxation policies, stimulating enterprises to intensify R&D in clean coal technologies.

and production  in mining industry, and applies LMDI to decompose the factors driving carbon emission, aiming at gaining a full understanding of carbon emission of mining industry and at offering references to make appropriate policies in promoting sustainable development of mining economy. The results indicate that the carbon emission and intensity first rised and then fell with a yearly rising rate of 2.92% and -5.77%. Their decoupling status shows weak decoupling. Coal mining, washing, coking coal and electricity play the key role in carbon emission. Increment of economic output is the key factor driving the carbon emission to rise, while a fall in energy intensity plays a major part in decreasing carbon emission.