Research on Recovery Treatment Process of Beryllium Copper Waste Slag and Application of the Recycled Materials AITranslate

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Chinese Library Classification Number:X758[环境科学与工程—环境工程]

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The technology of recovering beryllium and useful resources from the waste slag produced in the melting and casting process of beryllium-copper alloy was studied.Using ESR waste slag as a covering agent,beryllium-copper waste slag was refined and purified in a vacuum induction furnace under the protection of a molten slag layer.The Yuanbao ingots obtained after refining and casting can be used as interalloys for producing beryllium-copper alloy ingots to replace expensive beryllium-copper master alloys.The recovered ESR waste slag can be recycled for the recovery treatment of beryllium-copper waste slag,and can also be used as a flux for the manufacture of ceramics,glass,etc.after impurity removal and purification.The experimental results show that adjusting the slag viscosity to about 0.09 Pa·s under the optimal mass ratio of ESR waste slag to CaF₂ is beneficial to the improvement of metal yield and Be yield.When the vacuum degree is below 0.07 MPa,the Yuanbao ingots with no pores and uniform internal microstructure are obtained by vacuum refining.The successful research and development of this technology not only enables the comprehensive utilization of beryllium-copper waste slag as resources,turns waste into treasure,greatly reduces production costs and increases metal recovery rate,but also solves the environmental problems caused by long-term storage of beryllium-copper waste slag.