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Method and device for smelting recycled copper in reverberator

A technology of reverberatory furnace and regenerated copper, which is applied in the direction of reverberatory furnace, furnace, furnace type, etc., which can solve the problems of high flue gas temperature and limited use of heat exchangers, and achieve improved metal recovery rate, simple structure, and engineering transformation Small amount of effect

Inactive Publication Date: 2011-05-18
CENT SOUTH UNIV
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Problems solved by technology

For the latter, the general treatment method is to add a partition heat exchanger to preheat the air. Due to the high temperature of the flue gas and a certain amount of dust, the use of the heat exchanger is limited.

Method used

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  • Method and device for smelting recycled copper in reverberator
  • Method and device for smelting recycled copper in reverberator

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] The reverberatory furnace smelting regenerated copper method adopted in the present invention directly mixes part of the high-temperature flue gas of the reverberatory furnace 1 with the combustion-supporting air to form a combustion-supporting gas with a higher temperature and a lower oxygen concentration, so as to improve the uniformity of temperature distribution in the reverberatory furnace 1 , reduce the local high temperature, realize high wind temperature, low oxygen concentration combustion in the reverberatory furnace 1, thereby reducing the burning loss of metal, and the amount of returned smoke accounts for 30-50% of the total flue gas volume of the reverberatory furnace 1. The negative pressure in the horizontal flue 2 is strictly controlled, and the negative pressure of the horizontal flue 2 behind the gate 3 is controlled at...

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Abstract

The invention discloses a method and device for smelting recycled copper in a reverberator. With the method, partial high-temperature fumes of the reverberator are directly mixed with combustion-supporting air to form a combustion-supporting gas with high temperature and low oxygen concentration, thereby improving the uniformity of temperature distribution in the reverberator, reducing local high temperature and reducing the burning loss of metal. The horizontal section of a flue gate of the reverberator is connected with a fume backflow pipe, a high temperature fan and a bypass cool air pipe to transmit a part of high temperature fume exhausted from the reverberator to a burner so that high air temperature and low oxygen concentration combustion is implemented in the reverberator and the fume backflow content accounts for 30% to 50% of the total volume of the fume in the reverberator. The method provided by the invention has the advantages of high metal recovery rate and high heat efficiency, and the device has the advantages of simple structure and reliable performance.

Description

technical field [0001] The invention relates to a method and device for smelting recycled copper in a reverberatory furnace, in particular to a method and device for smelting recycled copper in a reverberatory furnace with the characteristics of high wind temperature and low-oxygen rich combustion. Background technique [0002] As the contradiction between the demand for copper products and the shortage of copper concentrate resources has become increasingly prominent, secondary copper has received more and more attention. The action plan for revitalizing the top ten national industries clearly stated that by 2011, the proportion of recycled copper in my country should be increased from 28% in 2008 to 35%. There are two main methods of producing recycled copper in my country: the first is to cast miscellaneous copper into anode copper through fire treatment, and then electrolytically refine it into electrolytic copper, which is called the indirect utilization method; the sec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B15/04
Inventor 周萍闫红杰陈卓李刚苏寅彪
Owner CENT SOUTH UNIV
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