Low-grade scrap copper cleaning and smelting new process and device thereof

Abstract

The invention provides a low-grade scrap copper cleaning and smelting new process and a device thereof. A furnace body of a bottom blowing melting furnace is a cylindrical horizontal rotary smelting furnace, and is lined with refractory bricks; one end of the top of the furnace body is a scrap copper charging port, and a flue port is formed in the other end of the furnace body; a spraying gun portis formed in the bottom of the part, below the flue port, of the furnace body; the side surface of the part, at one end of the flue port, of the furnace body is connected with a copper discharge portdevice, and a slag discharge port device is arranged on the part, at the other end of the flue port, of the furnace body. A furnace body of a bottom blowing oxidation-reduction furnace is a cylindrical horizontal rotary smelting furnace, and is lined with refractory bricks; a flue connecting port and a flue port are formed in two ends of the top of the furnace body correspondingly, and an accessory unloading port and a natural gas burner are distributed at the upper part in sequence; a matte feed port is formed in one side of the natural gas burner; a copper discharge port device and a slag discharge port device are arranged on the other side of the natural gas burner; and a spraying gun port is formed in the bottom of the furnace body. The advantages of reduction of the heat loss, high production capacity and intensity, high efficiency, high smelting strength, high utilization rate of oxygen, good labor conditions, convenience in operation, high production efficiency, good economicalbenefits, energy conservation and environmental protection are achieved.

Description

technical field [0001] The invention relates to the field of copper smelting, in particular to a new clean smelting process and device for low-grade scrap copper. Background technique [0002] my country is a country with few copper ore resources, and the mineral copper mainly depends on imported copper concentrate. Therefore, making full use of scrap copper resources at home and abroad has become an important part of the development of my country's copper smelting industry. Waste miscellaneous copper is divided into high-grade and low-grade waste miscellaneous copper due to different impurities. The waste pure copper or waste pure copper alloy with higher copper content can be directly produced into recycled rods or copper alloy products. Low-grade miscellaneous copper has low copper content and high impurities. It must first be cast into anode copper by fire smelting, and then electrolytically refined into electric copper, and other valuable metals will be recovered. Th...

AI Technical Summary

Problems solved by technology

[0003] In recent years, domestic processing of low-grade scrap copper requires repeated reduction and oxidation, high energy consumption, long production cycle, large loss of refractory materials, and economically unreasonable

In addition, since low-grade scrap copper contains a large amount of organic matter, persistent organic pollutants are produced during the smelting process, and environmental protection problems are difficult to solve. The treatment of its flue gas often needs to be treated separately by adding equipment, which consumes a lot of energy and saves energy. unsatisfactory

Images