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Smelting system and method for reducing magnetic iron generated in copper ore smelting process

A magnetic iron and copper ore technology, applied in chemical instruments and methods, magnetic separation, furnaces, etc., can solve the problem of insufficient time for clarification and separation of slag and matte, the reduction of the effective volume of the precipitation zone in the furnace, and the contact reaction of difficult-to-magnetic iron oxides, etc. problems, to achieve the effect of ensuring the clarification and separation time, reducing the slag temperature and smelting energy consumption, and reducing the copper content

Active Publication Date: 2021-06-29
YIMEN COPPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High magnetic iron causes the following problems: ① leads to an increase in the temperature of slag slag, resulting in a certain increase in smelting energy consumption; ② leads to an increase in the viscosity of slag, resulting in an increase in copper content in slag; 30%, the effective volume of the precipitation zone in the furnace decreases sharply, resulting in insufficient clarification and separation time for the slag and matte, and the copper content in the slag is high
However, pulverized coal particles are small, and after being directly mixed with copper concentrate, they are easily blown up by hot air in the smelting furnace and difficult to contact and react with magnetic iron oxide. burning, thus losing the reducing effect
However, the effect of dropping cast iron blocks to reduce the magnetic iron is not obvious

Method used

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  • Smelting system and method for reducing magnetic iron generated in copper ore smelting process

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Embodiment 1

[0032] This embodiment provides a smelting system for reducing the generation of magnetic iron in the copper ore smelting process, including a smelting furnace, a blowing furnace, a slow cooling mechanism, a mixed flotation mechanism and a magnetic separation mechanism connected in sequence, wherein the smelting furnace is provided with There are a matte copper discharge port and a smelting slag discharge port, the matte copper discharge port is connected with the feeding port of the blowing furnace, and the blowing furnace is provided with a crude copper discharge port and a blowing slag discharge port, and the smelting slag discharge port is The feed port and blowing slag outlet are all connected to the slow cooling mechanism; the smelting slag and its blowing slag are sequentially processed by the slow cooling mechanism, the mixed flotation mechanism and its magnetic separation mechanism to obtain the batching slag concentrate; the copper ore smelting system There is also a ...

Embodiment 2

[0038]The present embodiment provides a method for reducing the production of magnetic iron in the copper ore smelting process, comprising the following steps:

[0039] 1) Put batching slag concentrate and pulverized coal into the mixing cylinder, and stir evenly to form a mixture;

[0040] 2) Send the mixture, copper concentrate and its flux into the bottom blowing smelting furnace. The pulverized coal has reducing properties and can react with magnetic iron. When the pulverized coal is excessive, the reaction 4C+Fe will occur 3 o 4 =3Fe+4CO, when the magnetic iron is excessive, the reaction Fe 3 o 4 +2C=3Fe+2CO 2 , and usually the magnetic iron is excessive, the second reaction occurs to reduce the content of magnetic iron;

[0041] 3) Bubble oxygen and carbon-based reducing agent into the bottom-blown smelting furnace for smelting, and react Fe 3 o 4 +2C=3Fe+2CO 2 , and put cast iron blocks into the bottom blowing smelting furnace through the smoke outlet, and react ...

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Abstract

The invention discloses a smelting system and method for reducing magnetic iron generated in a copper ore smelting process, and relates to the technical field of copper ore smelting. A mixing cylinder is further arranged in the copper ore smelting system. The mixing cylinder is provided with a first feed port for feeding batching slag concentrate, a second feed port for feeding pulverized coal and a discharge port for outputting a mixture; and the discharge port is over against a first metering belt for conveying the mixture. According to the smelting system and method for reducing the magnetic iron generated in the copper ore smelting process, the mixing cylinder is arranged to mix the batching slag concentrate and the pulverized coal, so that the water content of the batching slag concentrate can be reduced, the batching slag concentrate is more prone to being heated for reaction, and the water content of the pulverized coal can be obviously improved, so that the pulverized coal is not prone to flying in a smelting furnace and can be stably positioned in a low-oxygen environment at the lower part of the smelting furnace; and the pulverized coal reacts with the magnetic iron in the batching slag concentrate and the newly generated magnetic iron, so that the content of the magnetic iron in the smelting slag is reduced.

Description

technical field [0001] The invention relates to the technical field of copper ore smelting, in particular to a smelting system and method for reducing the generation of magnetic iron in the copper ore smelting process. Background technique [0002] Copper is one of the first metals discovered and used by humans. Copper and its alloys are widely used due to their good electrical and thermal conductivity, strong corrosion resistance, easy processing, and good tensile strength and fatigue strength. They are second only to steel and aluminum in the consumption of metal materials, and have become national economy, people's livelihood and national defense projects. Even the indispensable basic materials and strategic materials in the high-tech field. It has a wide range of uses in the electrical industry, machinery industry, chemical industry, defense industry and other departments, and the demand has always been high. [0003] The traditional smelting method is copper smelting ...

Claims

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Application Information

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IPC IPC(8): C22B15/02C22B5/10C22B9/00B03C1/02
CPCC22B15/0032C22B15/006C22B5/10C22B9/00B03C1/02Y02P10/20
Inventor 余小吕陈全坤杨应宝叶钟林伏彦雄段亚明罗京
Owner YIMEN COPPER CO LTD
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