Method for producing copper and iron containing mixed slag

A technology of slag and copper slag, which is applied in the field of slag metallurgy and can solve problems such as environmental pollution and difficulty in handling copper oxide ore

Inactive Publication Date: 2018-02-23
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] At the same time, the existing copper pyrometallurgical process is suitable for processing copper sulfide ore, but it is difficult to process copper oxide ore
At present, there is no technology that can simultaneously process copper oxide mi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0217] A method of producing from a mixed slag containing copper and iron comprising the steps of:

[0218] 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, add copper sulfide concentrate and copper oxide concentrate; mix the slag Heating to a molten state to form a reaction slag containing copper and iron, and electromagnetically stirring the reaction slag to achieve natural mixing; real-time monitoring of the reaction slag, and ensuring the two parameters (a) and (b) by adjusting and controlling at the same time to obtain the reaction The complet...

Embodiment 2

[0222] A method of producing from a mixed slag containing copper and iron comprising the steps of:

[0223] Step 1, slag mixing: Add the copper-containing smelting slag obtained from the slag outlet of the matte-making smelting furnace, the copper-containing blowing slag (converter slag) and the wet copper smelting slag obtained from the slag outlet of the converter to the submerged arc furnace At the same time, the ferroalloy slag produced by smelting ferrochromium in molten state obtained from the slag outlet is added to form a mixed slag, and copper oxide concentrate is added; with oxygen-enriched air, natural gas, anthracite with a particle size of 20mm and coke particles are injected to mix the molten slag The slag is heated to a molten state to form a reaction slag containing copper and iron, and the reaction slag is electromagnetically stirred to achieve mixing; the reaction slag is monitored in real time, and the two parameters (a) and (b) are simultaneously controlled ...

Embodiment 3

[0226] A method of producing from a mixed slag containing copper and iron comprising the steps of:

[0227] Step 1, slag mixing: Add Osmelt copper-containing smelting slag obtained from the slag outlet of the matte-making smelting furnace and 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 steel slag obtained from the steel slag outlet forms a mixed slag, and copper sulfide concentrate is added; anthracite, coke particles and coal powder with a particle size of 20mm are injected with oxygen, and the mixed slag is heated 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 the slag is 1685°C. Add quartz sand, red mud, dolomite and lime...

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PUM

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Abstract

The invention relates to a method for producing copper and iron containing mixed slag. The method comprises the following steps: S1, mixing the slag, namely, adding copper slag to a smelting reactiondevice; adding one or a plurality of lead smelting slag, blast furnace slag, steel slag and iron alloy slag to form the mixed slag; synchronously adding one or a plurality of copper oxide mineral, copper sulphide mineral and copper-containing materials; uniformly mixing; heating the mixed slag until a molten state is achieved so as to obtain the reaction slag; monitoring the reaction slag in realtime; and regulating and controlling to obtain the reacted slag; and S2, separating and recovering. According to the method, the hot slag can be handled, and molten copper slag, the molten metallurgical slag, a physical heat source and a hot metallurgical flux are fully utilized, and moreover, cold slag can be handled; the metallurgical modification of the slag can be achieved by slag mixing or cold mixing. Therefore, the efficient recycling of metallurgic resource and heat energy is effectively realized; and the environmental pollution is effectively solved.

Description

technical field [0001] The invention belongs to the technical field of slag metallurgy, and in particular relates to a method for producing 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 pyro-smelting process The traditional lead smelting process "sintering-blast furnace reduction-fuming furnace" or the direct lead smelting process "oxidative blowing-high lead slag reduction-fuming furnace" produces a large amount of lead smelting slag. Iron and steel metallurgical slag, such as blast furnace slag, steel slag, and ferroalloy slag, is produced in the process of iron and steel production, which is the first solid waste in iron and steel complexes. [0003] Copper slag includes coppe...

Claims

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Application Information

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IPC IPC(8): C22B7/04C22B15/00C22B19/30C22B13/00C22B11/00C21B3/06C22B58/00C22B30/06C22B26/10
CPCC21B3/06C22B7/004C22B7/04C22B11/023C22B13/00C22B15/0054C22B19/30C22B26/10C22B30/06C22B58/00Y02P10/20Y02W30/50
Inventor 张力张武
Owner NORTHEASTERN UNIV
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