KR (knotted reactor) powder spraying, stirring and desulfurizing device and method

A technology of stirring desulfurization and powder spraying, which is applied in the field of KR powder spraying stirring desulfurization device, can solve the problems of distortion of the main pipe, the gun core cannot be reused, and the injection pipe cannot be extracted and replaced, so as to reduce the iron loss of slag scavenging and stabilize the desulfurization effect. , Solve the effect of large consumption of desulfurizer

Inactive Publication Date: 2012-09-19
ZENITH STEEL GROUP CORP
View PDF11 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the distortion and deformation of the main pipe of the spray gun core in the prior art, it cannot be pulled out and replaced when the spray tube is blocked, and the gun core cannot be reused.
This utility model only changes the gun core, and does not change the inherent disadvantages of the blowing method

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
  • KR (knotted reactor) powder spraying, stirring and desulfurizing device and method
  • KR (knotted reactor) powder spraying, stirring and desulfurizing device and method
  • KR (knotted reactor) powder spraying, stirring and desulfurizing device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] ⑴Conditions of molten iron before treatment:

[0045] 120 tons of molten iron tank, containing 125 tons of molten iron, the composition of the molten iron before desulfurization pretreatment: Si 0.43%, P 0.105%, S 0.061%, the temperature of the molten iron is 1300°C, and the amount of slag in the molten iron is 0.8%.

[0046] Desulfurization pretreatment target S≤0.015%.

[0047] ⑵Desulfurization treatment process:

[0048] ① After the molten iron tank enters the desulfurization station, gradually lower the stirring head;

[0049] ②When the stirring head is 5cm away from the molten iron surface, turn on the carrier gas (nitrogen), and the carrier gas flow rate is 30Nm 3 / h, the carrier gas pressure is 0.8MPa;

[0050] ③ After the carrier gas is turned on, bring the desulfurization powder CaO in the silo into the delivery pipeline, and spray it out through the end of the hollow stirring head. Continue to blow nitrogen after the end;

[0051] ④The stirring head start...

Embodiment 2

[0068] ⑴Conditions of molten iron before treatment:

[0069] 120 tons of molten iron tank, containing 120 tons of molten iron, the composition of the molten iron before desulfurization pretreatment: Si 0.32%, P 0.116%, S 0.057%, the temperature of the molten iron is 1310°C, and the amount of slag in the molten iron is 1.0%.

[0070] Desulfurization pretreatment target S≤0.001%.

[0071] ⑵Desulfurization treatment process:

[0072] ① After the molten iron tank enters the desulfurization station, gradually lower the stirring head;

[0073] ② When the stirring head is 3cm away from the molten iron surface, turn on the carrier gas (nitrogen gas) and the flow rate of the carrier gas is 35Nm 3 / h, the carrier gas pressure is 1.0MPa;

[0074] ③ After the carrier gas is turned on, the desulfurization powder CaC in the silo 2 Bring it into the delivery pipeline and spray it out through the end of the hollow mixing head. The desulfurization powder delivery rate is 0.25t / min, the des...

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention relates to a KR (knotted reactor) powder spraying, stirring and desulfurizing device. The KR powder spraying, stirring and desulfurizing device comprises a stirring head and a driving device for controlling the stirring head to act, wherein the driving device comprises a connecting rod linked with the stirring head, a lifting device for driving the connecting rod to move up and down and a stirring motor for driving the connecting rod to rotate. The KR powder spraying, stirring and desulfurizing device is characterized by further comprising a feeding system and a high-pressure gas source, wherein a through hole for introducing high-pressure inert gas and desulfurizing agents is formed on the stirring head, and an inlet of the through hole is communicated with a desulfurizing agent outlet and a high-pressure gas source outlet of the feeding system. The invention further relates to a method for desulfurizing molten iron by using the KR powder spraying, stirring and desulfurizing device. By using the device, efficient, fast and precise desulfurization can be realized, and the effects of reducing the requirements for granularity of desulfurizing agents, reducing the temperature drop and reducing the loss of the stirring head can be achieved.

Description

technical field [0001] The invention relates to a KR powder spraying stirring desulfurization device and method. Background technique [0002] With the rapid development of the economy and steel technology, the society has higher and higher requirements for steel quality, and the variety of products has also increased sharply, especially the demand for high-quality and high value-added steel is constantly increasing. In the face of increasingly fierce competition in the steel market, economical and efficient hot metal pretreatment desulfurization, as a typical optimized process flow of modern steel production, "blast furnace ironmaking-hot metal pretreatment-converter steelmaking-outside refining-full continuous casting-hot delivery One of the important links of "rolling" has been widely used in actual production. [0003] The hot metal desulfurization technology has developed rapidly in the past 30 years, and now there are more than a dozen treatment methods, among which t...

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): C21C7/064
Inventor 蒋鲤平刘宪民苏旺赵新春
Owner ZENITH STEEL GROUP CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap