Mine tailings recovery development prospects

Global mineral prices continue to rise, increasing the production costs of mineral demand enterprises, while increasing the pressure on resource security. In the situation of global mineral resources supply tension, developed countries around the world have found that the residues and tailings left after mineral resources processing and utilization contain business opportunities for secondary utilization. As a large mining country, the development and utilization of a large number of tailings accumulated over a long period of time can turn waste into treasure and effectively relieve the pressure on resources and the environment.

Tailings are mining enterprises in certain technical and economic conditions of the discharge of "waste", but at the same time is a potential secondary resources, when the technical and economic conditions allow, can be effectively developed again. According to statistics, before 2000, in China, the total volume of tailings output from mines was 5.026 billion tons, of which, the volume of iron ore tailings was 2.614 billion tons, the volume of major non-ferrous metals tailings was 2.109 billion tons, the volume of gold tailings was 272 million tons, and other 0.31 billion tons. In 2000, the annual discharge of tailings from China's mines reached 600 million tons, according to this projection, the total amount of existing tailings is about 8 billion tons. Obviously, tailings are just misplaced resources. According to the estimate of China Mining Federation Tailings Comprehensive Management Office, the potential value of tailings in China is about 130 billion yuan, and the economic benefits brought by its development and utilization will be a million dollars, which is extremely tempting. Therefore, the benefits brought by tailings should not be underestimated.

Tailings grade: After the ore has been sorted and treated for comprehensive utilization, its main useful components are enriched into concentrate, while other residual materials are called tailings. The content of the main useful components in the tailings is called the tailings grade. It is an important parameter for choosing an economic and reasonable beneficiation scheme and evaluating ore selectivity.

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