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A method for removing iron and recovering copper from waste iron bronze

A technology for iron bronze and copper recovery, which is applied in the field of iron removal and copper recovery from waste iron bronze, can solve problems such as difficulties, and achieve the effects of low processing cost, simple process, and significant economic and social benefits

Active Publication Date: 2020-11-03
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But, in the process of reclaiming copper of waste and old iron-bronze, because the content scope of iron in the waste and old iron-bronze is wide (0.1wt%~6.0wt%), this has brought very big for reclaiming copper from waste and old iron-containing bronze difficulty

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] After testing, the iron content in the scrap iron bronze to be treated in Example 1 is 3.1wt%.

[0039] A method for removing iron and recovering copper from waste iron bronze, comprising the following steps:

[0040] 1) adding scrap iron bronze to the smelting furnace to heat up and melt;

[0041] In step 1), the temperature of the melt is raised to 1200°C and then kept warm, and the heat preservation temperature of the melt is 1200°C;

[0042] 2) adding an oxidant to the melt in the smelting furnace, and then smelting with heat preservation to oxidize the Fe element into iron oxide;

[0043] In step 2), when the temperature of the melt is 1200°C, an oxidizing agent is added to the melt, and then heat-preserved and smelted for 40 minutes;

[0044] In step 2), the oxidant is cuprous oxide, and the amount of added cuprous oxide accounts for 30% by mass of the added amount of scrap iron bronze in step 1);

[0045] 3) Adding a slagging agent to the melt in the smelting ...

Embodiment 2

[0053] After testing, the iron content in the scrap iron bronze to be treated in Example 2 is 2.6wt%.

[0054] A method for removing iron and recovering copper from waste iron bronze, comprising the following steps:

[0055] 1) adding scrap iron bronze to the smelting furnace to heat up and melt;

[0056] In step 1), the temperature of the melt is raised to 1200°C and then kept warm, and the heat preservation temperature of the melt is 1200°C;

[0057] 2) adding an oxidant to the melt in the smelting furnace, and then smelting with heat preservation to oxidize the Fe element into iron oxide;

[0058] In step 2), when the temperature of the melt is 1200°C, an oxidant is added to the melt, and then heat-preserved and smelted for 30 minutes;

[0059] In step 2), the oxidant is cuprous oxide, and the amount of added cuprous oxide accounts for 30% by mass of the added amount of scrap iron bronze in step 1);

[0060] 3) Adding a slagging agent to the melt in the smelting furnace, a...

Embodiment 3

[0068] After testing, the iron content in the scrap iron bronze to be treated in Example 3 is 5.25wt%.

[0069] A method for removing iron and recovering copper from waste iron bronze, comprising the following steps:

[0070] 1) adding scrap iron bronze to the smelting furnace to heat up and melt;

[0071] In step 1), the temperature of the melt is raised to 1200°C and then kept warm, and the heat preservation temperature of the melt is 1200°C;

[0072] 2) adding an oxidant to the melt in the smelting furnace, and then smelting with heat preservation to oxidize the Fe element into iron oxide;

[0073] In step 2), when the temperature of the melt is 1200°C, an oxidant is added to the melt, and then heat-preserved and smelted for 30 minutes;

[0074] In step 2), the oxidizing agent is cuprous oxide, and the amount of added cuprous oxide accounts for 40% by mass of the added amount of scrap iron bronze in step 1);

[0075] 3) Adding a slagging agent to the melt in the smelting...

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PUM

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Abstract

The invention provides a method for removing iron and recovering copper from waste ferrobronze. The method comprises the steps that an oxidizer is added into molten liquid of the waste ferrobronze firstly, and Fe is oxidized into an iron oxide; then a slag former is added into the molten liquid to generate a slag forming a reaction with the iron oxide to generate slag; and then the molten liquid is subjected to still standing, then slagging off is conducted to remove the iron, then casting is conducted, and a coarse copper ingot is obtained. According to the method, physical metallurgy and alloying technologies are combined to remove the iron and recover the copper from the waste ferrobronze, the characteristics of good iron removing effect, simple process and low treatment cost are achieved, and remarkable economic and social benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of recycled copper, in particular to a method for removing iron and recovering copper from waste iron bronze. Background technique [0002] Iron bronze formed by adding iron to pure copper has high strength and conductivity, and is suitable for occasions requiring high conductivity and strength. It is widely used in circuit breaker components, contact springs, electrical fixtures, springs and terminals. , flexible hoses, fuse clips, gaskets, plugs, rivets, condenser welded pipes, integrated circuit lead frames, cable shielding, etc., among which the most typical use is for lead frames required for integrated circuits or separator components. [0003] But, in the process of reclaiming copper of waste and old iron-bronze, because the content scope of iron in the waste and old iron-bronze is wide (0.1wt%~6.0wt%), this has brought very big for reclaiming copper from waste and old iron-containing bronze difficul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B15/00
CPCC22B7/001C22B15/003Y02P10/20
Inventor 肖翔鹏黄剑陈金水李钊王俊峰陈辉明张建波
Owner JIANGXI UNIV OF SCI & TECH
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