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Method for conducting production through nickel smelting slag

A technology for smelting slag and slag, which is applied in the field of metallurgical production using nickel smelting slag, and can solve problems such as difficulty in handling copper oxide ore.

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

[0005] The existing copper pyrometallurgical process is suitable for processing copper sulfide ore, but it is difficult to process copper oxide ore

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0213] A method of producing from nickel smelting slag, comprising the steps of:

[0214] Step 1, slag mixing:

[0215] The molten nickel smelting slag obtained from the slag outlet of the smelting furnace in the "matte-making process" process is fed into the DC electric arc furnace, and lime and SiO are added at the same time 2 , MgO, Al 2 o 3 , forming a mixed slag, and adding copper sulfide concentrate and nickel oxide concentrate at the same time; heating the mixed slag to a molten state to form a reaction slag, and allowing the reaction slag to achieve natural mixing; real-time monitoring of the reaction slag, through regulation and control Guarantee the two parameters (a) and (b) to obtain the slag after the reaction; corresponding to (a): the temperature of the reaction slag is 1660°C, use a refractory spray gun to insert into the reaction slag, and use nitrogen as the loading gas. Spray copper slag, copper-containing soot, miscellaneous copper and copper-containing ...

Embodiment 2

[0219] A method of producing from nickel smelting slag, comprising the steps of:

[0220] Step 1, slag mixing:

[0221] Put the molten nickel smelting slag obtained from the slag outlet of the blowing furnace in the "copper matte converting" process into the pourable smelting reaction slag tank, and add limestone, dolomite, red mud, FeO and Fe at the same time 2 o 3 , forming a mixed slag, adding copper oxide concentrate and nickel sulfide concentrate at the same time; using oxygen-enriched air, injecting natural gas, anthracite and coke particles with a particle size of 20mm, heating the mixed slag to a molten state, and forming a copper-containing reaction slag ;Real-time monitoring of the reaction slag, by adjusting and controlling the two parameters (a) and (b) at the same time, to obtain the slag after the reaction is completed;

[0222] Corresponding to (a) the temperature of copper-containing reaction slag is 1660°C, insert a refractory spray gun into the reaction sla...

Embodiment 3

[0240] A method of producing from nickel smelting slag, comprising the steps of:

[0241] Step 1, slag mixing: the molten nickel smelting slag obtained from the blowing slag of the "copper matte nickel blowing" process through the slag outlet of the depletion furnace is added to the AC electric arc furnace, and limestone and high-calcium red mud after desodiumization are added at the same time to form Mix the slag, add copper oxide concentrate and copper sulfide concentrate at the same time; use oxygen with a preheating temperature of 600°C, inject anthracite, coke particles and coal powder with a particle size of 20mm, heat the mixed slag to a molten state, and form a The copper reaction slag is mixed by mechanical stirring; the reaction slag is monitored in real time, and the two parameters (a) and (b) are guaranteed at the same time through regulation to obtain the slag after the reaction is completed;

[0242] Corresponding to (a): the temperature of copper-containing reac...

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PUM

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Abstract

The invention relates to a method for conducting production through nickel smelting slag. The method includes the following steps that S1, clinker is mixed, wherein the nickel smelting slag is added in a smelting reaction device, calcium-series mineral and an additive are added; stirring is conducted, the slag is heated to the molten state, and one or more of copper oxide ore mineral, nickel oxidemineral, copper sulfide mineral, nickel sulfide mineral and a copper-containing material are added; the mixture is evenly mixed to be used as reaction slag, monitoring is conducted in real time, andmeanwhile the mixed copper-containing slag can meet the condition a and the condition b at the same time through regulation and control and slag subjected to reaction is obtained; and S2, separation and recycling are conducted. By means of the method, the hot-state slag can be processed, and the cold-state clinker can also be processed; molten nickel smelting slag physical thermal resources and hot-state metallurgy flux are sufficiently utilized, copper-containing clinker can be processed, the copper oxide mineral and / or the nickel sulfide mineral can also be processed, the method is a new copper smelting process, and simultaneous production of copper and iron is achieved.

Description

technical field [0001] The invention belongs to the technical field of slag metallurgy, and in particular relates to a method for metallurgical production using nickel smelting slag. Background technique [0002] During the nickel pyro-smelting process, a large amount of nickel smelting slag is produced. The nickel smelting slag includes the nickel smelting slag produced by the "matte smelting" process, the depleted slag produced by the "copper matte nickel blowing" process, and the top-blown smelting process. The nickel precipitated slag. my country's Jinchuan Company adopts "flash smelting" and "top blowing smelting" for nickel concentrate smelting, and produces 1 million tons of nickel smelting slag every year, and the accumulated storage capacity currently exceeds 10 million tons. Nickel smelting slag contains valuable components such as copper, iron, nickel, cobalt, zinc, lead, gold, and silver. Long-term stacking will waste resources and pollute the environment. [0...

Claims

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Application Information

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IPC IPC(8): C22B7/04C22B15/00C22B19/30C22B13/00C22B23/00C22B11/00C22B58/00C22B30/06C22B26/10
CPCC22B7/001C22B7/04C22B11/00C22B13/00C22B15/00C22B19/30C22B23/00C22B26/10C22B30/06C22B58/00Y02P10/20
Inventor 张力张武
Owner NORTHEASTERN UNIV
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