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Method for producing raw copper from matte converting water quenching slag by adopting reverberatory smelting

A reverberatory furnace and slag technology, which is applied in the field of blowing slag treatment technology, can solve the problems of reduced comprehensive smelting recovery rate, low production efficiency, and increased energy consumption, and achieve the effect of simple material preparation

Inactive Publication Date: 2015-12-23
YUNNAN TIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This treatment method causes a large amount of copper and iron to form a cycle in the process, which not only increases energy consumption, lowers production efficiency, but also reduces the recovery rate of comprehensive smelting

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] A method of producing blister copper by using reverberatory furnace smelting for matte blowing water-quenching slag. 200 tons of top-blown furnace matte blowing water-quenching slag containing 15.52% copper and 40.15% iron are mixed into blowing matte Reduced coal with 1% slag and a particle size of 1-10 mm was reduced and smelted at a temperature of 1200 ° C to 1250 ° C to obtain 29.23 tons of blister copper containing 98.56% copper and 141.14 tons of reflective slag containing 1.58% copper. After reduction smelting by the above method, the direct recovery rate of copper smelting (the percentage of copper entering into blister copper) is 92.82%.

Embodiment 2

[0010] A method for matte blowing water-quenching slag to produce blister copper by reverberatory furnace smelting. 400 tons of top-blown furnace matte blowing water-quenching slag containing 19.82% copper and 32% iron are mixed into blowing matte Reduced coal with 2% slag and a particle size of 10-15mm was reduced and smelted at a temperature of 1200-1250°C to obtain 76.45 tons of blister copper containing 97.83% copper and 255.11 tons of reflective slag containing 1.76% copper. After reduction smelting by the above method, the direct recovery rate of copper smelting (the percentage of copper entering into blister copper) is 94.34%.

Embodiment 3

[0012] A method of producing blister copper by using reverberatory furnace smelting for matte blowing water-quenching slag. The reverberatory furnace is used to process 300 tons of top-blowing furnace matte blowing water-quenching slag containing 17.63% copper and 48% iron. After reduction smelting of reduced coal with 3% matte slag and 10-20mm particle size at 1200-1250°C, 51.93 tons of blister copper containing 96.92% copper and 157.06 tons of reflective slag containing 1.63% copper were obtained. After reduction and smelting by the above method, the direct recovery rate of copper smelting (the percentage of copper entering blister copper) is 95.16%.

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Abstract

The invention provides a method for producing raw copper from matte converting water quenching slag by adopting reverberatory smelting. The method comprises the following steps: carrying out water quenching on top-blown furnace matte converting slag containing 14-22% of copper and 32-48% of iron, then adding the slag into a reverberatory, adding 1-3% of matte converting slag and reducing coal of which the particle size is 1-20mm, and carrying out reduction smelting at the temperature of 1200-1250 DEG C so as to obtain raw copper in which the copper content is greater than or equal to 95% and reverberatory slag in which the copper content is less than 2%. By adopting the method provided by the invention, the direct recovery rate of copper is greater than 90%. The converting slag after water quenching does not need to be specially prepared and only needs to be blended with a right amount of reducing agent to be smelted in the reverberatory, so that the material preparation is simple.

Description

technical field [0001] The invention relates to a copper smelting slag treatment process, in particular to a treatment process for the blowing slag produced by blowing matte in a top blowing furnace. Background technique [0002] In copper smelting production, the processes of blowing matte into blister copper include PS converter blowing, flash furnace blowing, top blowing furnace blowing, etc. Due to the differences in the process, the properties of the blowing slag produced by different blowing methods are also different. difference. PS converter and flash furnace, because the furnace can control a certain reducing atmosphere, and there is a relatively static settling molten pool, the content of magnetic iron in the slag produced by blowing is low, and the copper content in the slag is also low, generally containing copper 3%~ 10%; and top-blowing furnace blowing, due to the strong oxidizing atmosphere in the furnace and the agitation of the spray gun, a relatively stati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/04C22B15/04
CPCY02P10/20
Inventor 尹海蔡兵宋兴诚陈钢罗永春杜春云唐都作田澍袁海滨邹永俊高继明
Owner YUNNAN TIN
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