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Method for recovering valuable components in mixed slag containing copper and iron

A technology of slag and copper slag, applied in the field of slag metallurgy, can solve the problems of short process flow, low production cost and high metal recovery rate

Inactive Publication Date: 2018-02-16
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method has short reaction time, short process flow, high metal recovery rate, low production cost, large processing capacity, environmental friendliness, high economic returns, and can effectively solve the problems of efficient recycling of metallurgical resources and heat energy; and environmental pollution problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0206] A method for recovering valuable components from mixed slag containing copper and iron, comprising the following steps:

[0207] Step 1, slag mixing: Add the copper-containing smelting slag obtained from the slag outlet of the matte-making smelting furnace and the copper-containing blowing slag (converter slag) obtained from the slag outlet of the converter into the DC electric arc furnace, and at the same time add the cold Blast furnace slag, VOD / VAD slag and ferroalloy slag produced by smelting carbon ferromanganese, liquid high lead slag reduction furnace lead-containing smelting slag to form mixed slag; the mixed slag is heated to a molten state to form copper and iron-containing slag The reaction slag is electromagnetically stirred to realize natural mixing; the reaction slag is monitored in real time, and the two parameters (a) and (b) are ensured at the same time through regulation to obtain the slag after the reaction is completed; corresponding to (a): The temp...

Embodiment 2

[0211] A method for recovering valuable components from mixed slag containing copper and iron, comprising the following steps:

[0212] Step 1, slag mixing: add the copper-containing smelting slag obtained from the slag outlet of the matte-making smelting furnace and the copper-containing blowing slag (converter slag) obtained from the slag outlet of the converter into the pourable smelting reaction slag tank, and simultaneously Add ferroalloy slag produced by smelting ferrochrome in the molten state obtained from the slag outlet to form a mixed slag; use oxygen-enriched air to inject natural gas, anthracite with a particle size of 20mm and coke particles, and heat the mixed slag to a molten state to form a mixed slag containing The reaction slag of copper and iron is electromagnetically stirred to realize mixing; the reaction slag is monitored in real time, and the two parameters (a) and (b) are guaranteed by adjusting and controlling at the same time to obtain the slag after ...

Embodiment 3

[0215] A method for recovering valuable components from mixed slag containing copper and iron, comprising the following steps:

[0216] Step 1, slag mixing: Add the copper-containing smelting slag obtained from the slag outlet of the matte-making smelting furnace and the copper-containing blowing slag (converter slag) obtained from the slag outlet of the converter into the induction furnace, and at the same time add the copper-containing slag from the converter The steel slag obtained from the steelmaking slag outlet forms a mixed slag; with oxygen at a temperature of 600 ° C, anthracite, coke particles and coal powder with a particle size of 20 mm are injected to heat the mixed slag to a molten state to form copper and iron. React the slag and make the slag mix; monitor the slag in real time, and ensure the two parameters (a) and (b) through regulation to obtain the slag after the reaction is completed; corresponding to (a): the reaction of copper and iron The temperature of ...

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Abstract

The invention relates to a method for recovering valuable components in mixed slag containing copper and iron. The method for recovering the valuable components in the mixed slag containing copper andiron comprises the steps of S1, slag mixing, specifically, copper slag is added into a smelting reaction device, and one or more of lead smelting slag, blast furnace slag, steel slag and iron alloy slag are added at the same time so as to form mixed slag, the slag is heated to be in a molten state to form reaction slag, the reaction slag is evenly mixed and monitored in real time, the mixed reaction slag is regulated and controlled to meet a condition a and a condition b, and thus reacted slag is obtained; and S2, separation and recovery. By adoption of the method for recovering the valuablecomponents in the mixed slag containing copper and iron, copper, iron, zinc, lead, gold, silver, phosphorus, calcium and silicon in non-ferrous metallurgical slag and ferrous metallurgical slag are comprehensively utilized, and the problems of accumulation of a large quantity of slag and environmental pollution in the prior art are solved.

Description

technical field [0001] The invention belongs to the technical field of slag metallurgy, in particular to a method for recovering valuable components from mixed slag containing copper and iron. Background technique [0002] my country is the country with the largest output of metal copper, metal lead, steel and ferroalloy in the world. The copper pyrometallurgy process "matte smelting-copper matte blowing" produces copper slag, which is the first solid waste in heavy nonferrous metallurgy. Lead smelting slag is produced in the pyrometallurgical process of lead "sintering-blast furnace reduction-fuming furnace" or the direct lead smelting process "oxidative blowing-high lead slag reduction-fuming furnace". Blast furnace slag, steel slag, and ferroalloy slag are produced in the process of iron and steel production, which are the first solid waste. [0003] Copper slag includes copper-containing smelting slag, copper-containing blowing slag, copper pyrolysis depleted slag, cop...

Claims

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Application Information

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IPC IPC(8): C22B7/04C21B3/06
CPCC21B3/06C22B7/004C22B7/04Y02P10/20Y02W30/50
Inventor 张力张武
Owner NORTHEASTERN UNIV
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