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Process and apparatus thereof for refining copper scraps by using nitrogen gas stirring and oxygen-enriched oxygen gas

A technology for oxygen-enriched gas and waste copper, which is applied in the field of recycled copper metallurgy, can solve the problems of poor oxidative removal effect of impurities, poor adaptability of charge materials, low heat and mass transfer capacity of melt, etc., and is beneficial to environmental protection and production. The effect of improving efficiency and reducing energy consumption

Active Publication Date: 2010-02-03
CHINA NERIN ENG +1
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Problems solved by technology

However, since the tilting furnace is not equipped with a melt agitation device, the heat and mass transfer capacity of the melt during the refining process is low; moreover, because ordinary air is used as the oxidant, the oxidation and removal effect on impurities is poor, so the adaptation to the charge Poor performance, can only handle scrap copper with low impurity content

Method used

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  • Process and apparatus thereof for refining copper scraps by using nitrogen gas stirring and oxygen-enriched oxygen gas
  • Process and apparatus thereof for refining copper scraps by using nitrogen gas stirring and oxygen-enriched oxygen gas
  • Process and apparatus thereof for refining copper scraps by using nitrogen gas stirring and oxygen-enriched oxygen gas

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Embodiment Construction

[0022] As one of the process implementation cases: the equipment can adopt a rotatable cylindrical furnace, and the axis of the furnace body is arranged horizontally. The furnace body has 2 horizontal feeding ports 3; a slag outlet 2; a copper outlet 7; and 1 or 2 burner holes on the end cover of the furnace body. 4; On the top of the other side of the burner end, there is an exhaust hole 1 for exhausting the flue gas; on the furnace body, there are several redox ports 5 that can be quickly replaced (determined according to the number); the bottom of the furnace There are several microporous devices 4 for nitrogen gas to enter. There are rolling rings, ring gears, supporting wheels and driving devices on the furnace body. The end cover is equipped with burners that can burn heavy oil, natural gas and other fuels and can use oxygen-enriched wind to support combustion.

[0023] The steps of the process for treating solid copper waste:

[0024] a. Charging: Use charging equipme...

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Abstract

The invention relates to a process and an apparatus thereof for refining copper scraps by using nitrogen gas stirring and oxygen-enriched oxygen gas. Especially in the process of pyro-refining of solid copper scraps, oxygen-enriched air is used for improving the impurity removal rate of the copper scraps and a method for stirring molten copper with nitrogen gas is adopted to improve and enhance heat and mass transfer conditions of the metallurgical reaction of the whole refining process, thereby greatly shortening the time for copper scrap pyro-refining, improving the impurity removal rate andthe product quality of the copper scraps and simultaneously improving the utilization rate of fuel, oxidant and reductant. The process is a solid copper scrap treating method which has low energy consumption, high efficiency, safe operation, environment protection and the like, and is particularly suitable for large and medium copper scrap refining plants.

Description

technical field [0001] The invention belongs to the technical field of recycled copper metallurgy, and relates to a waste miscellaneous copper refining process and equipment thereof. In the refining process of solid waste miscellaneous copper, nitrogen stirring and oxygen-enriched air oxidation refining are used to finally obtain high-quality pyro-refined copper or anode copper. Background technique [0002] The refining process of scrap copper is different from the refining process of producing liquid blister copper from copper ore-smelting-blowing. The difference is mainly because the scrap copper entering the refining process is a solid cold material with high impurities. 4-20%, and the composition is complex, while liquid blister copper generally contains 0.5-2% impurities, so the refining process of waste miscellaneous copper has the characteristics of long melting and oxidation time, many times of slagging, and large amount of slag. [0003] At present, most domestic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B15/14F27B7/06F27B7/02F27B7/28F27B7/32F27B7/33F27B7/34F27B7/36
CPCY02P10/143Y02P10/20
Inventor 姚素平袁剑平刘庆华叶薇黄文华程海帆方建中陆军
Owner CHINA NERIN ENG
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