Research On Safety Evaluation Of Copper Resources Supply In China

Copper,one of the major non-ferrous metal minerals,is an important metal raw material in the national economic construction.China is the world's largest consumer of refined copper,accounting for 50% of the world's total refined copper consumption.However,domestic mine production is limited,and scrap copper recycling has not yet formed a scale,China's copper resource self-sufficiency rate is less than 30%.The domestic resource supply is seriously insufficient.It has been mainly imported from overseas resources,and the import volume has expanded year by year.The contradiction between supply and demand is particularly prominent.In the historical period of building a well-off society in an all-round way and in the historical process of realizing the great rejuvenation of the Chinese nation,safeguarding the safe supply of copper and other large-scale metal mineral resources is a major issue that must be considered.On the basis of fully grasping the history and current situation of China's copper resource supply,this paper introduces the stability of the importing country and the market control degree for the first time,and China's copper resource supply safety evaluation index system is constructed combing with storage-production ratio,reserve growth potential,domestic primary resource demand guarantee rate,demand growth,international production concentration,external dependence,import concentration from the perspectives of domestic resource factors,foreign resource factors and market factors of intermediate links.Based on the entropy-based topsis method,the safety status of copper resources supply in China from 2000 to 2017 was evaluated.The results show that the security value of copper resources supply in China has shown a downward trend since the new century.the supply of resources has continued to be tense since 2002.Domestic resource factors are the most important factors affecting the security of China's copper resource supply.The domestic primary resource demand guarantee rate,storage-production ratio,international production concentration,import concentration,and stability of importing countries are the main indicators affecting the safety of copper resources supply in China.Combined with the judgment of China's copper resource supply trend in 2018-2025,this paper evaluates the future supply security trend of China's copper resources.It is expected that China's copper resource demand will continue to grow by 2025,domestic primary resource supply will continue to decrease,and domestic secondary resources supply potential will be large,which will become the main domestic copper resource supply.With the increase in domestic secondary resource supply,foreign dependence will decline,but will remain high.The overall situation of China's copper resource supply security is getting better in 2018-2025,but it will still be in a more dangerous state,which is mainly caused by the large demand for copper resources in China and the high dependence on foreign copper resources.According to the evaluation results,it proposes countermeasures to improve the supply capacity of China's copper resources in the future.For example,continue to further strengthen mineral geological exploration,support the development of secondary copper recycling industry,the diversified layout of copper resources imports,expand investment and development of copper resources outside China,and actively cultivate large-scale multinational mining Company,etc.