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Method for producing copper-containing slag

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

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

[0008] 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 one that can simultaneously process copper oxide minerals, copper sulfide minerals and other copper-iron materials on a large scale, realize the simultaneous production of copper and iron, and solve the problem of a large amount of slag accumulation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0228] A method of producing from copper-containing slag, comprising the steps of:

[0229] Step 1, slag mixing:

[0230] Put the molten copper-containing smelting slag obtained from the slag outlet of the Osmelt furnace and the molten converter copper slag obtained from the slag outlet of the converter into the DC electric arc furnace, and add lime and SiO 2 , MgO, Al 2 o 3 , forming a mixed slag, adding copper sulfide concentrate; heating the mixed slag to a molten state to form a copper-containing reaction slag, and allowing the reaction slag to achieve natural mixing; real-time monitoring of the reaction slag, and at the same time ensuring (a) and (b) two parameters to obtain the slag after the reaction is completed; corresponding to (a): the temperature of the copper-containing reaction slag is 1660 ° C, a refractory spray gun is inserted into the reaction slag, and nitrogen is used as the loading gas, sprayed into Normal temperature powder particle size ≤ use refracto...

Embodiment 2

[0234] A method of producing from copper-containing slag, comprising the steps of:

[0235] Step 1, slag mixing:

[0236] Molten copper-bearing smelting slag obtained from the slag outlet of the Issar copper smelting furnace is fed into the pourable smelting reaction slag tank together with limestone, dolomite, red mud and FeO and Fe 2 o 3 , forming a mixed slag, adding copper oxide concentrate; using 600°C oxygen-enriched air, injecting natural gas, anthracite with a particle size of 20mm and coke particles, heating the mixed slag to a molten state to form a copper-containing reaction slag; real-time monitoring Reaction slag, by controlling and ensuring the two parameters (a) and (b) at the same time, the slag after the reaction is completed;

[0237] Corresponding to (a) the temperature of the copper-containing reaction slag is 1660°C, use a refractory spray gun to insert the reaction slag, use argon as the carrier gas, and spray into the normal temperature powder particle...

Embodiment 3

[0254] A method of producing from copper-containing slag, comprising the steps of:

[0255] Step 1, slag mixing: Add the copper-containing smelting slag obtained from the slag outlet of Jinfeng copper smelting furnace and the copper-containing blowing slag (converter slag) obtained from the slag outlet of the converter to the induction furnace, and add limestone and desodiumized red mud at the same time, To form a mixed slag, add copper-containing materials (wet zinc leaching slag); use oxygen with a preheating temperature of 300°C, inject anthracite, coke particles and coal powder with a particle size of 20mm, and heat the mixed slag to a molten state. Form copper-containing reaction slag, mechanically stir and mix; monitor the reaction slag in real time, and ensure the two parameters (a) and (b) at the same time through regulation, and obtain the slag after the reaction is completed;

[0256] Corresponding to (a): the temperature of copper-containing reaction slag is 1685°C,...

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Abstract

The invention relates to a method for producing copper-containing slag. The method comprises the following steps: S1, furnace slag mixing: adding copper slag into a reaction device, and adding a calcium-system mineral and an additive; heating the slag into a molten state, and adding one or more of a copper oxide mineral, a copper sulphide mineral and a copper-containing material; uniformly mixingthe materials to obtain reaction slag, monitoring the reaction slag in real time, and treating the mixed reaction slag through regulation and control to enable the mixed reaction slag to simulatenously meet conditions a and b, thus obtaining reacted slag; S2, separation and recycling. According to the method, both thermal-state slag and cold-state furnace slag can be treated; by full use of moltencopper slag physical thermal resources and a thermal-state metallurgical flux, treatment of copper-containing furnace slag and treatment of the copper oxide mineral are realized; the problem of bulkdeposition of furnace slag at present is solved; simultaneous production of copper and iron is realized; two world problems that the copper oxide mineral is difficult to treat and an iron component isdifficult to recycle are solved; meanwhile, the problems of environmental pollution and heavy metal pollution are solved.

Description

technical field [0001] The invention belongs to the technical field of slag metallurgy, and in particular relates to a production method using copper slag. Background technique [0002] During the pyrometallurgical process of copper, a large amount of copper slag is produced. Copper slag includes copper-containing smelting slag, copper-containing blowing slag, pyroprocess depletion waste slag, copper slag flotation tailings, and hydrometallurgy copper smelting slag. [0003] Copper-containing smelting slag is produced in the "matte smelting" process of the copper pyrometallurgy process, and more than 20 million tons are discharged every year, and the cumulative stockpile currently reaches more than 200 million tons. With the continuous development of "matte smelting" technology, such as flash smelting furnace, Noranda furnace, Vanyukov furnace, Isa furnace, Osmelt furnace, Mitsubishi furnace, Jinfeng furnace, bottom blowing furnace, etc., The copper content in the slag reac...

Claims

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Application Information

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