Method for producing nickel-iron-containing mixed slag

A ferroalloy slag and slag technology, applied in the field of slag metallurgy, can solve the problems of large processing capacity, heavy metal element pollution, environmental pollution, etc.

Inactive Publication Date: 2018-01-30
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 benefits, and can effectively solve the problem of efficient recovery and utilization of metallurgical resources and heat energy; the invention is a new melting The slag metallurgical process not only reduces the copper content in the slag to make the c

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0215] A method for producing by the mixed slag containing nickel and iron, comprising the following steps:

[0216] Step 1, slag mixing: the molten nickel smelting slag obtained from the slag outlet of the smelting furnace in the "matte making process" process and the slag outlet of the smelting furnace in the "copper matte blowing" process are added to the DC electric arc furnace, and the cold high Slag, VOD / VAD slag and ferroalloy slag produced by smelting carbon ferromanganese, lead-containing smelting slag of liquid high lead slag reduction furnace, form mixed slag, and add copper sulfide concentrate and nickel oxide concentrate at the same time; Heating to a molten state to form a reaction slag containing copper and iron, and making the reaction slag electromagnetic stirring to achieve natural mixing; real-time monitoring of the reaction slag, and ensuring the two parameters (a) and (b) through regulation and control to obtain the reaction The slag after completion; Corr...

Embodiment 2

[0220] A method for producing by the mixed slag containing nickel and iron, comprising the following steps:

[0221] Step 1, slag mixing: the molten nickel smelting slag obtained from the slag outlet of the smelting furnace in the “matte making process” process and the molten nickel smelting slag obtained from the slag outlet of the depletion furnace from the smelting slag of the “copper matte blowing” process Add pourable smelting reaction slag pot, and add ferroalloy slag produced by molten smelting ferrochromium obtained from the slag outlet to form mixed slag, and add copper oxide concentrate and nickel sulfide concentrate at the same time; the preheating temperature is 800 ℃ oxygen-enriched air, particle size is 20mm anthracite and coke particles, and natural gas is injected to heat the mixed slag to a molten state to form a reaction slag containing copper and iron, and the reaction slag is electromagnetically stirred to achieve mixing; real-time Monitoring the reaction s...

Embodiment 3

[0225] A method for producing by the mixed slag containing nickel and iron, comprising the following steps:

[0226]Step 1, slag mixing: the molten nickel smelting slag obtained from the slag outlet of the smelting furnace in the "matte making process" process and the molten nickel smelting slag obtained from the smelting slag produced by the top-blown molten pool smelting and obtained through the slag outlet of the sedimentation electric furnace are added to the DC electric arc furnace. At the same time, the steel slag obtained from the converter steelmaking slag outlet is added to form mixed slag, and copper sulfide concentrate and copper oxide concentrate are added at the same time; oxygen with a preheating temperature of 800 ° C is used to inject anthracite and coke particles with a particle size of 20 mm. With the pulverized coal, the mixed slag is heated to a molten state to form a reaction slag containing copper and iron, and the slag is mixed; Obtain the slag after the...

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PUM

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Abstract

The invention relates to a method for producing nickel-iron-containing mixed slag. The method comprises the following steps: S1, furnace slag mixing: adding nickel smelting slag into a reaction device, and adding one or more of lead smelting slag, blast furnace slag, steel slag and ferroalloy slag, thus forming the mixed slag; heating the mixed slag into a molten state, and adding one or more of acopper oxide mineral, a copper sulphide mineral, a nickel oxide mineral, a nickel sulfide mineral and a copper-containing material; uniformly mixing the materials to obtain reaction slag, monitoringthe reaction slag in real time, and treating the mixed reaction slag through regulation and control to enable the mixed reaction slag to simultaneously meet conditions a and b, thus obtaining reactedslag; S2, separation and recycling. The method for producing the nickel-iron-containing mixed slag is short in reaction time, short in technological process, high in metal recycling rate, low in production cost, high in treatment capacity, environmentally friendly and high in economical benefit, and effectively solves the problem in efficient recycling of metallurgical resources and heat energy.

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 nickel and iron. Background technique [0002] In the process of nickel pyrometallurgy, a large amount of nickel smelting slag is produced. Nickel smelting slag includes nickel smelting slag produced by the "matte smelting" process, depleted slag produced by the "copper matte blowing" process, and top blowing smelting. of nickel sedimentation slag. my country's Jinchuan Company adopts "flash smelting" and "top blowing smelting" for nickel concentrate smelting, which produces 1 million tons of nickel smelting slag every year, and the cumulative storage volume currently exceeds 10 million tons. Valuable components such as copper, iron, nickel, cobalt, zinc, lead, gold, and silver in nickel smelting slag are stacked for a long time, which not only wastes resources but also pollutes the environment. [0003] The iron ...

Claims

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Application Information

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IPC IPC(8): C22B7/04C22B15/00C22B19/30C22B13/02C22B11/02C22B23/02C22B26/10C22B30/06C22B58/00
CPCC22B7/04C22B11/02C22B13/02C22B15/00C22B19/30C22B23/02C22B26/10C22B30/06C22B58/00Y02P10/20
Inventor 张力张武
Owner NORTHEASTERN UNIV
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