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Tailings, also called mine dumps, slimes, tails, refuse, leach residue, or slickens, are the materials left over after the process of separating the valuable fraction from the uneconomic fraction (gangue) of an ore. Tailings are distinct from overburden, which is the waste rock or materials overlying an ore or mineral body that are displaced during mining without being processed.
The concept of tailings is relative, the tailings contains a lot of useful components.
In the current economic conditions, it should not be further separated. However, with the development of science and technology, it may also have further recycling economic value. Tailings is not completely useless waste, it often contains other useful components and can be comprehensive utilization. No waste discharge has been the need of fully utilize mineral resource and the protection of ecological environment. The comprehensive utilization of tailings has many examples at home and abroad.
Tailings are the potential treasure. Experts believe that the task of mining circular economy in China is developing and utilizing long-delayed tailings. We need research new type jaw crusher and promote our technology to make full use of tailings. For example, there are 61 tailings in Nandan, Guangxi province, which contains a large number of non-ferrous metal tin, antimony, lead, zinc, silver, gold, indium, cadmium and non-metallicmine arsenic, sulfur, etc. their grade are all above the national industrial grade, and some have reached the large or extra large scale with preliminary estimates of 3 billion Yuan resources. With the new development of mineral processing technology, metal recycling is no less than to create a new mine. Panzhihua iron tailings in Shichuan province, contains copper, nickel, titanium, vanadium and other useful components, which is equivalent to a large non-ferrous metal mines. Non-metallic minerals such as coal gangue and wall rock are together wealth, and have been mining to the ground.
So the tailings cannot be arbitrarily discharged. It is not only related to environmental protection, rational use of resources, but also the legal aspects. Therefore, the processing of tailings has great significance for the sustainable development of society. I hope each ore beneficiation plant and department can take actions to promote sustainable development of economy and society.
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