Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for removing carbon from copper-containing iron water by eddy current entanglement in limestone

A technology of limestone and molten iron, applied in the field of metallurgy, to achieve the effect of rapid and thorough reaction, low cost and simple process

Active Publication Date: 2019-04-26
NORTHEASTERN UNIV LIAONING
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent with application number 201610144809.0 proposes a method of stirring and involving pulverized coal to reduce copper slag, stirring to form a vortex, which has a very good reduction effect, but does not involve the field of decarburization

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
  • A method for removing carbon from copper-containing iron water by eddy current entanglement in limestone
  • A method for removing carbon from copper-containing iron water by eddy current entanglement in limestone
  • A method for removing carbon from copper-containing iron water by eddy current entanglement in limestone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The specific composition of the copper-containing molten iron used in this example is shown in Table 1.

[0042] Table 1 Contents of each element in copper-containing hot metal (mass fraction, %)

[0043]

[0044] The structural schematic diagram of the induction furnace system adopted in this embodiment is shown in figure 1 .

[0045] A method for removing carbon from copper-containing hot metal by eddy currents involving limestone, comprising the following steps:

[0046] (1) After taking copper slag and adding a carbonaceous reducing agent, the copper-containing molten iron obtained by reduction has a temperature of 1450°C and a mass of 20t. It is added to an induction furnace, and the temperature of the copper-containing molten iron is controlled to be 1450°C. The mass percentage of C is 2.0%, and the mass percentage of Cu is 4.68%;

[0047] (2) Adjust the stirring paddle 3 to be inserted to 1 / 3 of the height of the liquid level of the copper-containing molten...

Embodiment 2

[0053] The specific composition of the copper-containing molten iron used in this example is shown in Table 2.

[0054] Table 2 Contents of each element in copper-containing molten iron (mass fraction, %)

[0055]

[0056] The structural schematic diagram of the induction furnace system adopted in this embodiment is shown in figure 1 .

[0057] A method for removing carbon from copper-containing hot metal by eddy currents involving limestone, comprising the following steps:

[0058] (1) After taking copper slag and adding a carbonaceous reducing agent, the copper-containing molten iron obtained by reduction has a temperature of 1500°C and a mass of 20t. It is added to an induction furnace, and the temperature of the copper-containing molten iron is controlled at 1500°C. The copper-containing molten iron contains The mass percentage of C is 3.2%, and the mass percentage of Cu is 5.06%;

[0059] (2) Adjust the stirring paddle 3 to be inserted to 1 / 3 of the height of the li...

Embodiment 3

[0065] The specific composition of the copper-containing molten iron used in this example is shown in Table 3.

[0066] Table 3 Contents of each element in copper-containing hot metal (mass fraction, %)

[0067]

[0068] The structural schematic diagram of the induction furnace system adopted in this embodiment is shown in figure 1 .

[0069] A method for removing carbon from copper-containing hot metal by eddy currents involving limestone, comprising the following steps:

[0070] (1) After taking copper slag and adding carbonaceous reducing agent, the copper-containing molten iron obtained by reduction has a temperature of 1550°C and a mass of 30t. It is added to the induction furnace, and the temperature of the copper-containing molten iron is controlled at 1550°C. The copper-containing molten iron contains The mass percentage of C is 4.5%, and the mass percentage of Cu is 5.24%;

[0071] (2) Adjust the stirring paddle 3 to be inserted to 1 / 2 of the height of the coppe...

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

A method for removing carbon from copper-containing molten iron by involving eddy currents in limestone, belonging to the field of metallurgical technology. The specific steps are: (1) The copper-containing molten iron obtained by reducing copper slag with a carbonaceous reducing agent is introduced into an induction furnace to ensure that the copper-containing molten iron is The temperature of the molten iron is ≥1450°C; (2) Stir the copper-containing molten iron centrally to form a vortex with a height-to-diameter ratio of 0.5 to 2.5; (3) Spray limestone powder into the center of the vortex, continue central stirring, and then eccentrically spray the limestone powder. Stir to generate CO 2 It is more fully mixed with the vortex; (4) the limestone powder is directly involved in the molten iron by the vortex and reacts with the molten iron to obtain decarburized copper-containing molten iron and slag; (5) decarburized copper-containing molten iron and slag Discharge in layers. This method has simple process, low investment, energy saving, environmental protection, low cost and high economic value. It can not only achieve the purpose of decarbonization, but also protect the copper element from being burned.

Description

Technical field: [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a method for removing carbon from copper-containing iron water by eddy currents being involved in limestone. Background technique: [0002] Every ton of copper produced will produce 2.2 tons of copper slag. With the rapid development of copper smelting technology, the stock of copper slag has also greatly increased. Copper slag contains a large number of valuable metal elements, but the current utilization of copper slag is still focused on the extraction of copper and iron alone, and the simultaneous utilization of copper and iron elements is limited to copper-iron alloys. The extraction of copper and iron elements mostly uses carbonaceous reducing agents to reduce oxides and sulfides in copper slag. In order to ensure the reduction effect, carbonaceous reducing agents are mostly added in excess, which makes the obtained copper-iron alloy contain a large amount o...

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 Patents(China)
IPC IPC(8): C21C7/068
CPCC21C7/068
Inventor 张廷安豆志河张保敬张子木刘燕牛丽萍王东兴吕国志
Owner NORTHEASTERN UNIV LIAONING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com