Reclaimed copper smelting process and device

Abstract

The invention provides a reclaimed copper smelting process and a device. The process device is composed of a smelting furnace and two parallelly arranged redox furnaces, which are in connection with two branch chutes through a main chute. The three furnaces are arranged in the shape of the Chinese character ''pin''. A furnace body consists of a feed inlet, a flue gas outlet, a copper matte outlet, a slag notch, a side wall jack on a furnace body lateral part and a spray gun jack at the furnace body bottom. The slag notch is located at the furnace body end face, the copper outlet is located on the furnace body end face at the slag notch end or the lower part of the furnace body. The furnace body is cylindrical and rotatable. The furnace body has a round cross section and its radial dimension is consistent in the axial direction of the furnace body. The spray gun is in a casing pipe form, and is inserted into the spray gun jack so as to spray oxygen and natural gas into the furnace at the same time. The included angle alpha between the opening direction of the spray gun and the vertical direction is greater than or equal to -65 degrees and smaller than or equal to +65 degrees. The process and the device involved in the invention have the advantages of high production intensity, high efficiency, short cycle, energy saving and environmental protection, and good economic benefits.

Description

Technical field [0001] The invention belongs to the field of non-ferrous metallurgy, and relates to a new smelting process and a new device for processing recycled copper. Background technique [0002] Recycled copper has always been an important raw material for copper smelting and processing due to its good recycling characteristics. Among the "urban minerals", recycled copper is one of the non-ferrous metal resources with a wide range of sources and a large amount. There is a big gap between my country's recycled copper industry level and foreign countries, which is prominently reflected in the low industrial concentration, backward technical equipment level, high comprehensive energy consumption, serious pollutant emissions, and low effective resource utilization. In the past few years, it mainly relied on imports, such as tilting furnace, Kaldor furnace and other smelting processes. The introduction cost was high, the structure was complicated, and the above-mentioned probl...

AI Technical Summary

Problems solved by technology

Although these process devices have improved indicators in terms of energy consumption, operation, and technical level compared with traditional smelting processes, they have not broken away from the traditional single-furnace operation mode. The production time of a single furnace is longer, and the amount of recycled copper processed per unit time Limited, relatively low production scale and efficiency

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