Method for preparing copper and copper-alloy cast ingots by electroslag refining technology

Abstract

The invention discloses a method for preparing copper and copper-alloy cast ingots by an electroslag refining technology, which is implemented through the steps that: copper liquid is fed into a porous heating electrode after flowing through a launder; after the copper liquid is heated by the porous heating electrode, the copper liquid is subject to water-cooling ingot casting three times by using a crystallizer, and electroslag liquid is fed into the launder; and redundant electroslag liquid in the crystallizer flows into a slag ladle. The temperature of the electroslag liquid 2 is controlled in a range of 50-80 DEG C higher than the temperature of the copper liquid, the density of the electroslag liquid is required to be10-20% lower than the density of the copper liquid, and the boilingpoint of the electroslag fluid is required to be higher than 1900 DEG C. By using the method for preparing copper and copper-alloy cast ingots by an electroslag refining technology disclosed by the invention, a production process implemented by carrying out two-time melting and two-time solidification on metals in the traditional electroslag re-melting and ingot casting production process is canceled, therefore, the method is short in technological process, simple in production equipment, low in energy consumption, high in production efficiency, low in production cost, and higher in cast ingot quality; and by using the method disclosed by the invention, the volatilization loss of slag can be reduced, the operation environment can be improved, and the environmental pollution can be reduced.

Description

technical field [0001] The invention belongs to the technical field of metallurgical casting, and in particular relates to a method for preparing high-quality copper and copper alloy ingots by electroslag refining technology. Background technique [0002] Casting is the first process of copper and copper alloy processing, and it is also the key to the quality of copper and copper alloy processed products. The quality of ingots directly affects the quality and yield of final processed products. Electroslag remelting casting is an effective way to obtain high-quality copper and copper alloy ingots, but electroslag remelting casting uses a two-stage process to prepare high-quality copper and copper alloy ingots. The first step is to use the direct water-cooled casting method or die casting method to prepare ordinary DC ingots or die-cast ingots; the second step is to undergo electroslag remelting to obtain better quality electroslag remelted ingots. Because the traditional ele...

AI Technical Summary

Problems solved by technology

In the production process of the ingot, it has to go through two melting and two solidification, the energy consumption is high, the production efficiency is low, and the production cost is high

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