Method for preparing anode plate by fire refining of complex copper-containing material

A technology of pyro-refining and copper materials, applied in the field of pyro-metallurgical process, which can solve the problems of process flow, equipment investment that cannot meet the needs of enterprises, lack of slag returning to the front-end process, large amount of pyro-refining slag, etc., to achieve production costs Low, good fluidity, high copper direct yield effect

Active Publication Date: 2022-02-01
JIANGXI COPPER TECHNOLOGY RESEARCH INSTITUTE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The impurity removal process of the traditional copper fire refining furnace includes oxidation and reduction processes. In the oxidation stage, quartz sand is added as a slagging agent for slagging and impurity removal. This process has low adaptability to complex high-grade copper-containing materials. Traditional The process of slagging will lead to a large amount of pyro-refining slag, high copper content in the slag, and low direct copper recovery rate. Usually, the slag contains more than 26% copper
Since most copper smelting enterprises had a relatively complete smelting process before, that is, there was a front-end process of pyro-refining, and these slags were returned to the front-end process for processing, but now some enterprises only have a single process of pyro-refining, and do not have the slag return to the front-end process. Due to the conditions of the process, the slag is usually sold directly at a discount, which will bring direct economic losses to the enterprise
[0008] The current relevant research focuses on further recycling the slag after the slag is produced by pyro-refining, which cannot meet the needs of enterprises in terms of process flow and equipment investment, and there are few reports on reducing the copper content in slag directly in the pyro-refining process

Method used

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  • Method for preparing anode plate by fire refining of complex copper-containing material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Single-furnace high-grade complex copper material has a total of 308.25 tons. After detecting 95.49% of copper, 2.03% iron containing iron, the total amount of impurities is 13.90 tons, which is equipped with 10 tons of dragging agent, of which sand (silica content is 99.5%) 8 Tons, limestone (39.5% calcium content, calcium oxide 55.3%) 12 tons, high-grade complex copper materials and slag, allocated 3 batches, 1,200 ° C, furnace temperature, total application 16.10 hours, using silica High-grade complicated copper-containing removal effect increased, so that the slag level increased by 12.79%, adding calcium oxide, so that the floating fluidity is better, the viscosity is lower, the feed is introduced into the compressive wind acceleration material melt. At the same time, oxidation is carried out, and the subsequent oxidation time is 5.2 hours. After the insulation is allowed to stand for 30 minutes. After that, the pulverization was subjected to 0.7 hours, and the natural...

Embodiment 2

[0046] Single furnace high-grade complex copper-containing material has a total of 300.00 tons. After detecting 92.50%, the total amount of impurities is 22.5 tons, with a total of 8 tons of dragging agents, including sand (silica content of 99.5%) 3 tons, limestone (including limestone Calcium 39.5%, corresponding calcium oxide 55.3%) 5 tons, high-grade complex copper materials and dragging agents are divided into 3 batches, the furnace temperature is 1200 ° C, and the total use of 13.4 hours. The addition of the compressive wind acceleration material merges, while oxidation, the subsequent oxidation time is 3.6 hours, using the high-grade of the silica high-grade complicated copper material to improve the removal effect of oligible iron, lead, and zinc, add calcium oxide, so that the slag flows Better, lower viscosity. After the insulation is allowed to stand for 30 minutes. After that, the pulverization was subjected to 0.7 hours, and the natural copper settled in the slag was ...

Embodiment 3

[0048] Single furnace high-grade complicated copper material has a total of 305.78 tons. After detecting 96.45% of copper, 10.86 tons of impurities, a total of 5 tons of dragging agent, including sand (silica content of 99.5%) 2 tons, limestone (including limestone Calcium 39.5%, corresponding to calcium oxide 55.3%) 6 tons, high-grade complicated copper material and slag which are divided into 3 batches, 1,200 ° C, and the total cost is 14.6 hours. The addition of compressive wind acceleration materials in the later period, while oxidation, follow-up oxidation time of 5.6 hours. After the insulation is allowed to stand for 30 minutes. Then, the coal was subjected to 0.7 hours, then the copper fluid cast into an anode plate. Finally, the total amount of slag is 16.64 tons, and the slag grade increases by 17.81%. Pouring 288.35 tons of Qigang Antiode plate, such as figure 1 Indicated.

[0049] Table 5-7 1 Samples of different standrings on the total amount of slag copper

[0050] ...

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Abstract

The invention relates to a pyrometallurgy process in the field of nonferrous metallurgy, and especially relates to a method for preparing an anode plate by fire refining of a complex copper-containing material. The method comprises the following steps: detecting the contents of copper and iron in the complex copper-containing material; preparing a slag former according to a detection result, adding the complex copper-containing material and the slag former into a reaction furnace, heating to a preset temperature, introducing compressed air or oxygen-enriched air, and stirring to carry out oxidation reaction; after oxidation is completed, performing heat preservation for a certain time, then slagging off, reducing with a copper liquid, and pouring to form the anode plate. The method has the beneficial effects that the composite slag former is adopted for oxidizing and slagging, so the fluidity of the slag is improved, the viscosity is low, meanwhile, copper in the slag is further settled, the slag amount is 90-95% of the original slag amount, the slag contains the copper bottom, and the method has the advantages of being high in copper direct recovery rate, short in technological process and low in production cost.

Description

Technical field [0001] The present invention relates to a mortem metal in a colored metallurgy, in particular a method of refining the preparation of the anodus plates with a complex copper-containing material. Background technique [0002] Copper is an important basic metal, with its excellent mechanics, thermal conductivity, conductive, and corrosion resistance, widely used in electricity, communications, buildings, military, transportation and other fields. With the economic development, my country has become the largest copper producer and consumer, with an annual production of refined copper close to 10 million tons. [0003] The production of refined copper is part from the copper mine developed in nature, and the other part is recovered by secondary copper resources. The smelting of traditional copper is mainly produced by copper ore as raw materials. The copper ore is copper concentrate via the mineralization. Since most of the copper ore is existing in the form of sulfid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C9/00C22C9/02C22C9/04C22C9/08B22D25/04
CPCC22C1/02C22C9/00C22C9/08C22C9/04C22C9/02B22D25/04
Inventor 刘亮强程贵桃王强罗波
Owner JIANGXI COPPER TECHNOLOGY RESEARCH INSTITUTE CO LTD
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