A combined refining process method of high melting point waste copper scrap

By synergistically using a melting shaft furnace and a continuous furnace in a combined refining process, calculating the melting point and element ratio of the Cu-X alloy solution, and utilizing natural gas stirring and charcoal covering, the melting problem of high-melting-point scrap copper raw materials was solved, achieving an efficient refining process and saving time and energy.

CN116590535BActive Publication Date: 2025-10-17DAYE NONFERROUS METALS
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Patent Information

Application Number
CN202310732701.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-06-20
Publication Date
2025-10-17
Estimated Expiration
2043-06-20

AI Technical Summary

Technical Problem

The existing combined refining process cannot effectively process high-melting-point scrap copper raw materials, resulting in a limited range of raw materials, affecting operation time and energy consumption.

Method used

By calculating the theoretical melting point temperature and element ratio of the Cu-X alloy solution in a process that cooperates with a melting vertical furnace and a continuous furnace, and using natural gas stirring and charcoal covering, the melting and refining of high-melting-point scrap copper raw materials can be achieved.

Benefits of technology

The raw material range of the combined refining process is expanded, operation time is saved and energy consumption is reduced, and the thermal efficiency characteristics of the vertical furnace and continuous furnace are fully utilized.

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Abstract

The present application relates to a kind of high melting point waste copper raw materials combined refining process method, the process method is completed by melting shaft furnace and continuous furnace cooperation, including the following steps: S1, before starting every furnace, carry out batching calculation;S2, melting shaft furnace first provides the required amount of copper liquid as matrix metal to continuous furnace, then from the continuous furnace mouth to continuous furnace bath adds the required amount of high melting point waste copper raw material, inserts reduction pipe into copper liquid and passes into natural gas, agitates copper liquid, and all high melting point waste copper raw material is melted into Cu-X alloy solution;S3, Cu-X alloy solution is transported to casting system and cast;The present application not only enables combined refining process to handle high melting point waste copper raw material, but also fully utilizes the characteristics of high thermal efficiency (70-75%) of melting shaft furnace, more economical (continuous furnace thermal efficiency 15-30%) of shaft furnace melting high-grade waste copper raw material, and fast melting speed of shaft furnace, greatly saves operation time and reduces energy consumption.
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