Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for blowing matte through copper converter

A converter blowing and matte technology, applied in the field of copper smelting, can solve problems such as furnace lining damage, achieve the effect of protecting the furnace lining and improving the life of the converter

Inactive Publication Date: 2015-04-29
JINCHUAN GROUP LIMITED
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When oxygen-enriched air is used for blowing, the lining damage is more serious than when air is used

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for blowing matte through copper converter
  • Method for blowing matte through copper converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] The present invention utilizes Fe 3 o 4 It is an operation method to control its content within an appropriate range to make it adhere to the surface of the furnace lining to protect the furnace lining under high temperature conditions.

[0012] The chemical reaction formula of the basic principle of Fe3O4 furnace protection is:

[0013] 1), 2FeS+3O2=2FeO+2SO 2 ;

[0014] 2), 2FeO+SiO 2 =2FeO SiO 2 ;

[0015] 3), 6FeO+O 2 =2Fe 3 o 4 .

[0016] Matte blowing is a periodic operation. During the slagging period, FeS is oxidized by blasting:

[0017] 2FeS+3O 2 =2FeO+2SO 2 (1)

[0018] The generated FeO combines with the quartz flux to enter the slag phase:

[0019] 2FeO+SiO 2 =2FeO SiO 2 (2)

[0020] During the slagging period, the reaction (1) proceeds very rapidly, while the reaction (2) proceeds relatively slowly when the temperature is lower than 1220 °C, and the FeO melt and quartz (SiO 2 ) The solid contact is poor, which makes ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for blowing matte through a copper converter. The method comprises the following steps: 1) feeding materials; 2) slagging; 3) discharging slag; 4) roasting and blowing; 5) blowing in the second cycle; 6) closing slag and discharging. The method is characterized in that quartz is added to enable the SiO2 content of slag to be 18 to 21% before closing the slag and discharging. According to the method, the characteristic of high melting point of Fe3O4 is utilized, and the content of Fe3O4 is controlled to be within a proper range, so that Fe3O4 can be attached on the surface of furnace lining to protect the furnace lining under a high temperature state, and as a result, the service of the converter can be prolonged.

Description

technical field [0001] The invention relates to the field of copper smelting, in particular to a method for blowing matte in a copper converter. Background technique [0002] Matte blowing uses oxygen in the air to oxidize and remove almost all iron and sulfur in matte (CuS and FeS), and remove some other impurities to obtain blister copper. Converter blowing is divided into two stages: the first stage is often called slag-making stage, iron and sulfur are removed; the second stage is copper-making stage, CuS oxidation is carried out, CuS and CuO react with each other, and blister copper is finally obtained. Converter blowing is a periodic operation, and the slagging period is to obtain a sufficient amount of white matte (Cu 2 S), and then remove the slag FeS remaining in the matte, that is, the sieve furnace. [0003] During the copper converter converting process, the converter lining is gradually damaged under the action of mechanical force, thermal stress and chemical ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22B15/06
Inventor 杨斌强康汝信喻勇殷双英周艳秋刘晓航杨东烨张喜盈闫跟东吴忠华
Owner JINCHUAN GROUP LIMITED