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Side-blown depletion copper smelting slag production method

A production method and technology for copper smelting slag, which are applied in the production field of side-blown depleted copper smelting slag, can solve the problems of complex process flow and low recovery efficiency, and achieve the effects of speeding up the reaction, saving energy and ensuring the effect of depletion

Active Publication Date: 2017-02-01
HENAN YUGUANG GOLD & LEAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of complex technological process and low recovery efficiency in the recovery system of copper smelting slag in the prior art, and provide a production method of side-blown depleted copper smelting slag with convenient operation and continuous production , use this side blowing depletion production method to deplete copper smelting slag, so that the copper content in the waste slag is not higher than 0.35%. This process has the advantages of low investment, low energy consumption, low cost, high degree of automation, and good environment.

Method used

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  • Side-blown depletion copper smelting slag production method

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Example 1 This example is the case where only molten copper smelting slag is used without vulcanizing agent. 40t / h molten copper smelting slag is added to the side blowing depletion furnace from the feed port 3, wherein the copper smelting The slag can be fed intermittently or continuously, and the fuel is sprayed into the molten pool through the lance port 5 arranged on the side of the lean furnace, wherein the fuel is a mixture of pulverized coal and compressed air or pulverized coal and enriched The mixture of oxygen and air is used to stir, transfer heat and mass transfer to the lean furnace through the injected fuel. The temperature in the furnace is controlled at 1100~1300℃, the injection pressure is 0.1~0.4 Mpa, and the depth of the molten pool is 800~2000mm. Put a pack of 6m through copper matte port 7 every 18h 3 copper matte, put a pack of 12m through the slag outlet every 45 minutes 3 The depleted slag, the flue gas is sent to the acid system for acid produc...

Embodiment 2

[0029] Example 2 This example is the case where only molten copper smelting slag is used, and the ratio of copper smelting slag and vulcanizing agent is 50:1. 40t / h of molten copper smelting slag is used, wherein the ratio of smelting slag to blowing slag is The ratio is 4:1, and it is fed into the side-blown depletion furnace from the feed port 3, and the vulcanizing agent is measured by a belt scale at a mass ratio of 0.8t / h and continuously fed into the side-blown depleted furnace through the feed port 3, wherein the copper smelting The slag can be fed intermittently or continuously, and the fuel is sprayed into the molten pool through the lance port 5 arranged on the side of the lean furnace, wherein the fuel is a mixture of pulverized coal and compressed air or pulverized coal and enriched The mixture of oxygen and air is used to stir, transfer heat and mass transfer to the lean furnace through the injected fuel. The temperature in the furnace is controlled at 1100~1300℃, ...

Embodiment 3

[0030]Example 3 In this example, only solid copper smelting slag is used, and the vulcanizing agent is used at 100:15. 40t / h solid copper smelting slag is used, wherein the copper smelting slag is mainly refining slag or blowing slag from the feed port 3 is added to the side-blown depletion furnace, and the vulcanizing agent is measured by a belt scale at a mass ratio of 6 / h and continuously fed into the side-blown depletion furnace through the feed port 3, wherein the copper smelting slag is continuously fed, and is set in the lean The nozzle 5 on the side of the furnace sprays the fuel into the molten pool through the spray gun, wherein the fuel is a mixture of pulverized coal and compressed air or a mixture of pulverized coal and oxygen-enriched air, and the fuel injected into the lean furnace is Stirring, heat transfer, and mass transfer, control the temperature in the furnace at 1100~1300°C, the injection pressure at 0.1~0.4 Mpa, the depth of the molten pool at 800~2000mm,...

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Abstract

The invention belongs to the technical field of copper smelting, and particularly relates to a side-blown depletion copper smelting slag production method. The side-blown depletion copper smelting slag production method includes the following steps that a vulcanizing agent and copper smelting slag are added into a side-blown depletion furnace from a feeding opening, wherein the mass ratio of the copper smelting slag to the vulcanizing agent is 100:0-15, and the copper smelting slag is molten copper smelting slag or solid copper smelting slag; fuel is jetted into a molten pool through a spraying gun opening formed in the side portion of the depletion furnace, wherein the fuel is a mixture of pulverized coal and compressed air or a mixture of pulverized coal and oxygen-enriched air, the fuel is used for achieving stirring, heat transferring and medium transferring in the depletion furnace, the temperature in the furnace ranges from 1100 DEG C to 1300 DEG C, the pressure ranges from 0.1 Mpa to 0.4 Mpa, and the depth of the molten pool ranges from 800 mm to 2000 mm; copper matte is placed in through a copper matte opening, and depletion slag is discharged through a slag outlet; and smoke enters a gas desulfurization system after being subject to cooling and dust collection, is subject to desulfuration and is released after the standard is met. The process has the beneficial effects of saving investment, and being low in energy consumption, low in cost, high in automatic degree, environment-friendly and the like.

Description

technical field [0001] The invention belongs to the technical field of copper smelting, in particular to a production method of side-blowing depleted copper smelting slag. Background technique [0002] In the copper smelting process, copper smelting slag mainly includes smelting slag, blowing slag and refining slag. Copper concentrate produces smelting slag during the smelting process, copper matte produces blowing slag during the blowing process, blister copper produces refining slag during the refining process, the smelting slag contains 2~6% copper, and the blowing slag contains 3~25% copper , The refining slag contains 20~50% copper. In order to recover copper in copper smelting slag, at present, most enterprises use slag beneficiation to reduce copper content in slag, and a few enterprises use electric furnace to reduce copper content in slag. The copper content of the blowing slag produced by the converter is relatively low, and it is generally used to enter the bene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/04C22B15/00
CPCC22B7/001C22B7/04C22B15/0032C22B15/0054Y02P10/20
Inventor 刘素红王拥军吴艳新
Owner HENAN YUGUANG GOLD & LEAD
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