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Double-furnace blister copper continuous converting process

A blister copper and process technology, which is applied in the Jinfeng blister copper continuous blowing process and the blister copper continuous blowing process field, can solve the problems of high sulfur content and impurities in blister copper, inability to digest cold materials, and high copper content in blowing smelting slag. Achieve the effect of stable saturated steam volume and pressure, stable flue gas volume and small furnace temperature change

Inactive Publication Date: 2015-04-22
CHIFENG YUNTONG NONFERROUS METALS +1
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process has the disadvantages of inability to digest cold material, high comprehensive energy consumption, high copper content in blowing slag, low direct yield, high production cost, and high sulfur content in blister copper.
The Mitsubishi blowing process is to flow the hot matte directly into the blowing furnace through the chute, and at the same time use the air spray gun to spray flux and oxygen-enriched air into the melt, and generate blowing slag, blister copper and high-temperature flue gas through oxidation reaction ;Although the energy consumption is low, there are disadvantages of high copper content in blowing slag, low direct yield, high sulfur content and high impurities in blister copper

Method used

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  • Double-furnace blister copper continuous converting process

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Effect test

Embodiment 1

[0029] Such as figure 1 Shown, a kind of double-furnace blister copper continuous blowing process comprises the steps:

[0030] (1) Melting produces hot matte containing 50% copper, which flows into the slagging furnace continuously and stably through the matte chute, and at the same time, quartz stone flux and cold material with a particle size of 2 high temperature flue gas. The blowing slag and white matte are separated in the furnace, and the blowing slag containing less than 3.0% copper floats on the upper layer of the melt, and is discharged continuously through the overflow of the slag outlet, and enters the slow cooling slag bag through the slag chute, and floats in the slag removal plant Selection; white matte containing 75% copper sinks in the lower layer of the melt, is discharged through the siphon channel, and flows into the copper-making furnace through the chute; 1200°C containing SO 2 The high-temperature flue gas enters the waste heat boiler through the verti...

Embodiment 2

[0033] Such as figure 1 Shown, a kind of double-furnace blister copper continuous blowing process comprises the steps:

[0034](1) Melting produces hot matte containing 55% copper, which flows into the slagging furnace continuously and stably through the matte chute. At the same time, quartz stone flux and cold material with a particle size of 20mm are added through the feeding port, and the pressure is 110KPa through the tuyere. , Oxygen-enriched air containing 33% oxygen, a chemical reaction occurs in the furnace, the blowing temperature is controlled at 1250°C, and blowing slag, white matte and SO 2 high temperature flue gas. The blowing slag and white matte are separated in the furnace, and the blowing slag containing less than 3.0% copper floats on the upper layer of the melt, and is discharged continuously through the overflow of the slag outlet, and enters the slow cooling slag bag through the slag chute, and floats in the slag removal plant Selection; white matte con...

Embodiment 3

[0037] Such as figure 1 Shown, a kind of double-furnace blister copper continuous blowing process comprises the steps:

[0038] (1) Hot matte containing 60% copper is produced by smelting, and it flows into the slagging furnace continuously and stably through the matte chute. At the same time, quartz stone flux and cold material with a particle size of 30mm are added through the feeding port, and the pressure is 120KPa through the tuyere. , Oxygen-enriched air containing 35% oxygen, a chemical reaction occurs in the furnace, the blowing temperature is controlled at 1260°C, and blowing slag, white matte and SO 2 high temperature flue gas. The blowing slag and white matte are separated in the furnace, and the blowing slag containing less than 3.0% copper floats on the upper layer of the melt, and is discharged continuously through the overflow of the slag outlet, and enters the slow cooling slag bag through the slag chute, and floats in the slag removal plant Selection; white ...

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Abstract

The invention relates to the production process technology of double-furnace blister copper continuous converting. According to the technical scheme, a double-furnace blister copper continuous converting process is uniquely characterized in that two furnace kilns which are arranged front and back continuously complete the process of forming blister copper through copper matte by means of converting, and the two furnace kilns are named as a slag formation furnace and a copper formation furnace. The process flow includes the steps that the copper matte produced by a smelting furnace continuously flows into the slag formation furnace, and in the slag formation furnace, the copper matte chemically reacts with solvent added into the slag formation furnace and oxygen-enriched air blown into the slag formation furnace, so that converting slag, white copper matte and high-temperature gas are generated; the converting slag is continuously discharged out of a slag discharge opening in an overflow mode, and placed in a slow cooling slag ladle through a chute, the white copper matte sinks to the furnace bottom, is discharged through siphoning and continuously flows into the copper formation furnace through the chute, and the high-temperature gas enters a waste heat boiler; in the copper formation furnace, the white copper matte chemically reacts with the solvent and the oxygen-enriched air which is blown in, so that the blister copper, a trace of converting slag and the high-temperature smoke are generated; the blister copper is continuously or intermittently discharged through siphoning by means of the chute, the converting slag is regularly discharged out of the slag discharge opening in the overflow mode, and the high-temperature gas enters the waste heat boiler.

Description

technical field [0001] The invention relates to a blister copper smelting process, in particular to a blister copper continuous blowing process, which is called the Jinfeng blister copper continuous blowing process. Background technique [0002] Copper smelting enterprises at home and abroad are gradually developing towards the continuous blowing process technology that meets clean production standards, actively seeking or developing blowing processes with large production capacity, low investment and operating costs, continuous operation, and environmental protection. my country attaches great importance to the selection and development of smelting process and blowing process in large and medium-sized copper smelting new or renovation projects. While introducing and digesting advanced technologies, it focuses on developing smelting technology and continuous blowing technology with independent intellectual property rights. It has become an inevitable trend to gradually narrow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B15/00
Inventor 王国军韩志
Owner CHIFENG YUNTONG NONFERROUS METALS
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