Method for comprehensively recycling abandoned diamond tool valuable element through capacitance

Abstract

Provided is a method for comprehensively recycling abandoned diamond tool valuable element through capacitance. Diamond and tungsten carbide are isolated from an abandoned diamond tool under the effect of electro-ion, other metals can be obtained from the diamond tool by electrolyzing again of electrolyte solution, and cyclic utilization of the electrolyte solution is achieved. The contained metal component such as diamond, the tungsten carbide particle, copper powder and nickel powder, and extracted metal powder recycled by adopting the method for comprehensively recycling the abandoned diamond tool valuable element through the capacitance can be continuously used as raw material of diamond tool production or be used in other industries, the used electrolyte solution can further be circularly recycled without environment pollution and with more environment protection.

Description

technical field [0001] The invention relates to the fields of resource comprehensive recovery and utilization and material purification, in particular to a method for comprehensive recovery and utilization of valuable elements of discarded diamond tools through capacitance. Background technique [0002] With the development of world industry, the world's resources are facing scarcity, especially metal resources. The world's developed industrial countries attach great importance to the utilization of "secondary resources". Renewable resources have become the main raw materials of non-ferrous metals, and the secondary non-ferrous metal industry has become an independent industry. In the past ten years, countries all over the world have been continuously improving the utilization rate of recycled metals. In several developed industrial countries, the secondary utilization rate of copper, lead and zinc has reached more than 55-80%. [0003] With the rapid growth of my country'...

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Problems solved by technology

[0007] The problem of how to comprehensively recycle waste diamond tools is in front of us. At present, the treatment of waste diamond tools in China is gradually moving towards comprehensive utilization, but there are still deficiencies in the recovery process. Most of them use acid leaching process to recycle waste diamond tools. For example, the application number 200810227770.4, the invention patent of the authorized announcement number CN 101745514 B, first recovers the diamond and tungsten carbide particles in the waste diamond tools through the acid leaching and filtration process, the recovery process is slow and the cost is high; the leachate is detected by atomic absorption spectroscopy Composition, adjust the composition and concentration by adding corresponding soluble salts and deionized water, and use the chemical co-precipitation-reduction process to prepare various non-ferrous metals in the mother liquor to obtain ultra-fine pre-alloyed powders. The production process is relatively complicated, and each acid leaching After completion, it is necessary to detect, analyze and adjust the concentration and proportion of the added raw materials, and repeatedly pass through deionized water to wash the residual metal and acid radical ions until the pH value of the washing filtrate is 7. The process is complicated and greatly increases the production capacity. cost

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