Technique for continuously smelting copper by employing oxygen bottom converter and device thereof

An oxygen bottom blowing and process technology, applied in the direction of improving process efficiency, can solve problems such as low-altitude pollution, and achieve the effect of reducing load and high smelting direct yield

Active Publication Date: 2010-12-08
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art, and provide an effective method to solve the problem of low-altitude SO in copper smelting PS converter blowing. 2 pollution problems, while providing a more advanced, shorter process, less investment, lower cost, higher recovery rate, and better comprehensive utilization than the existing continuous copper smelting processes such as the Mitsubishi method and the flash blowing method in the world. Continuous Copper Smelting Technology and Equipment in Oxygen Bottom Blowing Furnace

Method used

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  • Technique for continuously smelting copper by employing oxygen bottom converter and device thereof
  • Technique for continuously smelting copper by employing oxygen bottom converter and device thereof
  • Technique for continuously smelting copper by employing oxygen bottom converter and device thereof

Examples

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Effect test

Embodiment 1

[0078] A process for continuous copper smelting using oxygen bottom blowing, characterized in that the process comprises the following steps:

[0079] (1) The copper sulfide concentrate and flux, the returned intermediate copper materials including soot, slag copper concentrate, blowing furnace slag, etc., are mixed and granulated by the disc granulator, and then sent to the bottom blowing smelting furnace by the belt feeder The upper furnace feeding port is added into the furnace, and oxygen is sent into the furnace through an oxygen lance set at the bottom of the furnace at an angle of 0° to the vertical line for smelting reaction. The temperature is 1080℃;

[0080] (2) The copper matte generated by the bottom blowing smelting furnace is put into the chute connected with the bottom blowing smelting furnace through the siphon discharge port located at one end of the bottom blowing smelting furnace; the copper matte is sent to the end of the bottom blowing smelting furnace thr...

Embodiment 2

[0086] Except that oxygen is fed into the furnace through an oxygen lance set at the bottom of the furnace at an angle of 16° to the vertical for smelting reaction, and oxygen is fed into the furnace through an oxygen lance set at the bottom of the bottom blowing furnace at an angle of 16° from the vertical for blowing The mixed pellets are smelted to generate copper matte and smelting slag. The smelting temperature is 1100°C and the blowing temperature is 1250°C. Except for the high temperature flue gas, the rest are the same as those described in Example 1.

Embodiment 3

[0088] A process for continuous copper smelting with oxygen bottom blowing, characterized in that:

[0089] Copper matte blowing refers to: the liquid high-temperature copper matte produced from the bottom blowing smelting furnace is continuously injected into the bottom blowing blowing furnace with oxygen through the chute, and oxygen-enriched air is continuously fed from the bottom of the blowing furnace to continuously blow the high-grade copper matte. ;

[0090] At the same time, the top of the furnace is not open. Through the silo and the metering belt feeder, the flux lime powder is sent into the furnace together with oxygen through the silo and the metering belt feeder according to the calculated amount to make slag from the oxygen lance; One end is opened at the upper part to discharge smelting slag, and the lower part is opened with a siphon device to discharge blister copper, so as to realize continuous addition of copper matte, continuous blowing, continuous additio...

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Abstract

The present invention relates to continuous copper-smelting oxygen bottom blowing furnace process and apparatus. The continuous copper-smelting process includes smelting high grade copper matte in an oxygen bottom blowing furnace, smelting coarse copper product with the high grade copper matte in one other bottom blowing furnace, producing high iron slag, dressing the furnace slag to obtain copper concentrate and returning to smelting furnace, separating out iron concentrate product and obtaining tailings. The process has short flow path, low investment, low power consumption, low cost, environment friendship and other advantages.

Description

technical field [0001] The present invention relates to a non-ferrous metal smelting copper smelting method and its device, more specifically, to a continuous copper smelting process and its device using an oxygen bottom blowing furnace. Background technique [0002] As far as smelting is concerned, the pyrometallurgical smelting of copper in my country has been used in industrial production: flash furnace smelting, Noranda smelting, Osmet smelting, Isa smelting, autothermal smelting, silver smelting and traditional blast furnaces Melting, electric furnace melting, reverberatory furnace melting, etc. Except for the last three traditional methods, which are difficult to meet the emission standards required by environmental protection, the other smelting methods are relatively advanced smelting processes adopted in the world today. As far as copper blowing is concerned, more than 90% of the world today uses PS converters, which operate intermittently. 2 The flue gas escapes a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B9/00C22B5/00C22B15/00
CPCY02P10/20
Inventor 蒋继穆尉克俭张振民史学谦林晓芳
Owner CHINA ENFI ENGINEERING CORPORATION
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