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Method of strengthening dilution of copper smelt residues by waste iron oxide desulfurizing agent

A technology for iron oxide desulfurizer and copper smelting slag, applied in the fields of metallurgy and material science, can solve problems such as no solution proposed, and achieve the effects of improving flow performance, improving copper recovery rate, and improving depletion effect

Active Publication Date: 2018-11-02
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] For the above problems, no effective solution has been proposed

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0031] A method for strengthening copper smelting slag depletion by waste iron oxide desulfurizer of the present invention comprises the following steps:

[0032] (1) Pretreatment of waste iron oxide desulfurizer: dry the waste iron oxide desulfurizer containing 32.22wt% of sulfur, 17.91wt% of calcium oxide, 7.89wt% of iron, and 5.32wt% of fixed carbon, and crush it until the particle size is less than 3mm , and then through dry ball milling, the particles with a particle size of -0.074mm account for more than 80%;

[0033] (2) Coke powder pretreatment: crush the coke powder with a fixed carbon content of 52.12wt% to a particle size of less than 3mm, and then pass through a dry ball mill until the particles with a particle size of -0.074mm account for more than 80%;

[0034] (3) Ingredients: Mix the pretreated waste iron oxide desulfurizer, pretreated coke powder, sodium humate binder and water to obtain a depleting agent; the mass of the waste iron oxide desulfurizer accounts...

Embodiment 2

[0039] A method for strengthening copper smelting slag depletion by waste iron oxide desulfurizer of the present invention comprises the following steps:

[0040] (1) Pretreatment of waste iron oxide desulfurizer: dry the waste iron oxide desulfurizer containing 32.22wt% of sulfur, 17.91wt% of calcium oxide, 7.89wt% of iron, and 5.32wt% of fixed carbon, and crush it until the particle size is less than 3mm , and then through dry ball milling, the particles with a particle size of -0.074mm account for more than 80%;

[0041] (2) Coke powder pretreatment: crush the coke powder with a fixed carbon content of 52.12wt% to a particle size of less than 3mm, and then pass through a dry ball mill until the particles with a particle size of -0.074mm account for more than 80%;

[0042] (3) Ingredients: Mix the pretreated waste iron oxide desulfurizer, pretreated coke powder, sodium humate binder and water to obtain a depleting agent; the mass of the waste iron oxide desulfurizer accounts...

Embodiment 3

[0047] A method for strengthening copper smelting slag depletion by waste iron oxide desulfurizer of the present invention comprises the following steps:

[0048] (1) Pretreatment of waste iron oxide desulfurizer: dry the waste iron oxide desulfurizer containing 32.22wt% of sulfur, 17.91wt% of calcium oxide, 7.89wt% of iron, and 5.32wt% of fixed carbon, and crush it until the particle size is less than 3mm , and then through dry ball milling, the particles with a particle size of -0.074mm account for more than 80%;

[0049] (2) Coke powder pretreatment: crush the coke powder with a fixed carbon content of 52.12wt% to a particle size of less than 3mm, and then pass through a dry ball mill until the particles with a particle size of -0.074mm account for more than 80%;

[0050] (3) Ingredients: Mix the pretreated waste iron oxide desulfurizer, pretreated coke powder, sodium humate binder and water to obtain a depleting agent; the mass of the waste iron oxide desulfurizer accounts...

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Abstract

The invention provides a method of strengthening dilution of copper smelt residues by a waste iron oxide desulfurizing agent. The method comprises the following steps: first, mixing the waste iron oxide desulfurizing agent, an additive and an F adhesive with water uniformly to obtain a dilution agent; then pelletizing the dilution agent; then inputting the dilution agent in a copper smelt residuedilution electric furnace to be diluted, wherein the waste iron oxide desulfurizing agent contains a vulcanizer, a reducing agent and flux and the copper melt residues contain copper oxide and magnetite; and obtaining diluted residues and matte through dilution treatment, wherein the copper content of the diluted residues is smaller than 0.35wt%, and the grade of matte is greater than 15wt%. The method treats another waste with one waste to achieve the purpose of treating waste with waste by treating the copper residues with the waste iron oxide desulfurizing agent, so that two wastes are treated cooperatively. Therefore, the resources are saved, and the environment is protected.

Description

technical field [0001] The invention belongs to the technical field of metallurgy and material science, and in particular relates to a method for strengthening copper smelting slag depletion with a waste iron oxide desulfurizer. Background technique [0002] More than 80% of the world's copper is produced by pyrometallurgy, and usually 1 ton of matte produces about 2.2 tons of copper slag. At present, my country's annual output of copper smelting slag is more than 15 million tons, and the cumulative amount of copper smelting slag accumulated is more than 120 million tons. With the development of copper smelting technology, the efficiency of copper smelting has been improved, the oxygen potential in the smelting furnace has increased, the grade of matte has increased, and the copper content in slag has also increased. Copper slag contains about 1% copper in the smelting process, while converter slag contains up to 5% copper, which is much higher than the 0.3% copper mining g...

Claims

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Application Information

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IPC IPC(8): C22B15/00C22B7/00
CPCC22B7/001C22B15/0039C22B15/0056Y02P10/20
Inventor 潘建朱德庆李启厚郭正启杨聪聪李思唯李紫云梁钟仁
Owner CENT SOUTH UNIV
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