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Method for shortening oxidoreduction time of crude copper in anode furnace

A technology of anode furnace and blister copper, which is applied in the field of non-ferrous metal smelting, can solve the problems of increasing oxidation and reduction time, unfavorable processing capacity of anode furnace, waste of resources, etc., so as to improve effective operation time, shorten oxidation and reduction time, and waste ineffective energy little effect

Inactive Publication Date: 2015-10-07
YUNNAN TIN
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Problems solved by technology

This directly leads to too long oxidation operation time, which increases the overall redox time by at least 2 hours, and the copper water is also deeply oxidized. Oxidation also increases the consumption of reducing agents, which is costly and wastes resources
It is not conducive to the improvement of the effective working time of the anode furnace, and it is not conducive to the improvement of the processing capacity of the anode furnace

Method used

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Experimental program
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Embodiment Construction

[0016] A method for shortening the redox time of blister copper in an anode furnace is carried out according to the following steps:

[0017] (1) Put the cold material blister copper into the anode furnace for heating, and carry out the blister copper oxidation operation;

[0018] (2) After the oxidation operation has been carried out for a period of time, conduct temperature measurement and sampling tests on the blister copper in the anode furnace. If the temperature of the blister copper in the anode furnace reaches 1100-1150°C, the S index of the blister copper is lower than 0.008%. The impurity elements all meet the reduction requirements, and the crude copper O content is ≥ 0.8%, then the oxidation operation has reached the end. If the crude copper contains S ≥ 0.008%, the rest of the impurities are up to the standard O ≤ 0.8%, and the crude copper temperature is lower than 1100 ° C, then oxidation Has not reached the end point, continue to oxidize.

[0019] (3) After th...

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Abstract

Provided is a method for shortening the oxidoreduction time of crude copper in an anode furnace. At present, pyro-refining is carried out on crude copper, it is commonly required that oxidation finishing temperature at least reaches 1,150 DEG C in operation in most enterprises in the industry to prevent reduction finishing temperature from being too low, it is required that the oxidation finishing temperature reaches 1,200 DEG C in part of copper smelting enterprises, and oxidation is finished at this moment. The crude copper has reduction conditions. By means of the method, the oxidoreduction time of the crude copper in the anode furnace is shortened, cost is saved, and efficiency is improved.

Description

technical field [0001] The invention belongs to the field of nonferrous metal smelting, and in particular relates to a method for shortening the redox time of blister copper in an anode furnace. Background technique [0002] Blister copper pyro-refining is an important link between matte blowing and electrolytic refining process. Its function is to oxidize and remove excess S and other oxidizable and volatile impurities in blister copper, and dissolve high in the reduction blister copper. O, after the oxidation-reduction operation is completed, the copper water temperature generally reaches about 1180°C, which can meet the anode plate casting temperature conditions. [0003] At present, in crude copper pyro-refining, most enterprises in the industry generally require the oxidation end temperature to be at least 1150°C in order to prevent the reduction end temperature from being too low. Copper has reducing conditions. This directly leads to too long oxidation operation tim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B15/14
Inventor 袁海滨唐都作蔡兵刘国辉张崇云熊尉明
Owner YUNNAN TIN
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