Assessment For Life-cycle Carbon Emissions And Carbon Abatement Potential Of China’s Mining Industry

For a long time,China has been the largest greenhouse gas emission country in the world,facing enormous public opinion and political pressure to save energy and reduce emissions for a long time.Basic carbon emission data is a key basis for formulating energy conservation and carbon reduction policies and promoting the construction of a national carbon market.Mining industry is an important basic industry sector that provides raw materials for various industries.Its carbon emission data have a key significance for China to achieve the overall carbon emission goal of peaking,carbon neutralization.However,at present,there are still few studies on carbon emission accounting and carbon emission reduction potential assessment in the extractive industry,especially microscopic studies on mining enterprises and production processes.Therefore,in order to investigate extractive forestry carbon emissions present situation in our country,and to assess potential energy conservation and carbon emission reduction potential of mining,this paper studied the current commonly used industrial sector carbon emissions research framework,including:climate economics,sustainable development,life cycle assessment,analyzes the advantages and disadvantages of each research framework.Since the life cycle assessment framework can build models independently and carry out research at the micro level such as enterprises and processes,life cycle assessment is selected as the basic framework for research.Then,through the analysis of the production process of the mining industry,the boundary of the carbon emission accounting system is delineated,and the carbon emission accounting model is constructed one by one according to the difference of carbon emission sources by taking the emission factors of carbon emission sources,equipment performance parameters,equipment working parameters and other data as input data.This model can obtain detailed and accurate basic carbon emission data at the process and equipment level,and has the potential to be combined with the energy saving and carbon reduction potential assessment model.In addition,in order to improve the accuracy of the traditional energy saving supply curve and carbon reduction cost curve,’the two models are improved,and the two models are combined with the carbon emission accounting model,so that the improved model has the potential to consider the gap between the actual production capacity and the designed production capacity.In addition,for open-pit mines,the economic and reasonable stripping ratio method is also integrated into the energy saving supply curve and carbon reduction cost curve,so that it can analyze the interaction between the application of energy saving and carbon reduction technology and the mining boundary design of open-pit mines.Based on the constructed carbon emission accounting model of mining industry and the improved evaluation model of energy saving and carbon reduction potential,the carbon emission of iron mines in Liaoning Province was calculated,the carbon emission characteristics were analyzed,and the energy saving and carbon reduction potential was evaluated.Based on the results of carbon emission accounting and the assessment of carbon emission reduction potential,this paper gives relevant policy suggestions for energy saving and carbon reduction in mining industry.Firstly,since the carbon emission level of mines using the underground caving method is lower than that of mines using the underground filling method,and mines using the underground caving method have higher energy saving potential and carbon emission reduction potential,it is suggested to promote the underground caving mining method to reduce the energy consumption and carbon emission of China’s iron ore mining industry.Secondly,the level of capacity utilization has a significant impact on the unit energy saving cost and unit carbon reduction cost of energy saving and carbon reduction technology.It is suggested that policies should be introduced to eliminate mines with low capacity utilization rate and promote the increase of capacity utilization rate of other mines,so as to promote the application of energy saving and carbon reduction technology and realize the purpose of reducing energy consumption and carbon emission of our mining industry.Again,because of rising energy prices and a carbon price will not only help promote the application of energy conservation and carbon reduction technology,also helps to promote high energy consumption,low carbon mining capacity,and lower production capacity will help reduce energy consumption and carbon emissions,therefore suggested that the moderate increase energy prices and a carbon price,promoting the orderly exit of backward production capacity,Promote the realization of carbon peak and carbon neutralization in our mining industry.