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

Semisteel desulfuration dephosphorization agent and preparing method and application thereof

A technology for dephosphorization agent and application, which is applied in the field of iron and steel smelting, can solve the problems of less heating elements, difficult dephosphorization, and difficult slagging, and achieves the effect of cost saving and simple preparation method

Active Publication Date: 2015-03-25
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP +1
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the semi-steel obtained after vanadium extraction contains trace amounts of silicon and manganese, which results in slag formation and less heating elements during converter steelmaking, making slagging difficult and dephosphorization extremely difficult

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

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] Further, the present invention also discloses a method for preparing the above-mentioned desulfurization and dephosphorization agent for semi-steel, including the following steps:

[0033] c. Mixing each component according to the proportioning ratio to obtain a mixed material;

[0034] d. Passivate the mixed material with a passivation solution.

[0035] Further, in the step b, there is no specific requirement on the type and amount of the passivation solution, in short, it is enough to passivate the mixed material.

[0036] Further, in order to prevent moisture absorption, the above-mentioned step a is carried out in a dry atmosphere, such as dry air, nitrogen, etc.; the potassium salt is packaged in a sealed package before use.

[0037] Further, the present invention also discloses the use of the above-mentioned desulfurization and dephosphorization agent for semi-steel in the desulfurization and dephosphorization of semi-steel. As a preferred solution, its dosage ...

Embodiment 1

[0046] Preparation of desulfurization and dephosphorization agent for semi-steel:

[0047] Mix 5kg of graphite powder, 15kg of calcium silicate, 5kg of potassium carbonate, 5kg of potassium chloride, 20kg of manganese dioxide and 50kg of active lime and passivate it with a passivation solution to obtain a desulfurization and dephosphorization agent for semi-steel.

[0048] Among them, the CaO content in passivated lime is 82%wt.

[0049] Use the desulfurization and dephosphorization agent for semi-steel to desulfurize and dephosphorize the semi-steel:

[0050] After the converter vanadium extraction is completed, the undesulfurized and dephosphorized semi-steel is transported to the injection desulfurization station. Before desulfurization, put the desulfurization and dephosphorization agent and passivated magnesium powder into different material tanks. The material tanks are sealed with dry nitrogen. The carrier sprays passivated magnesium powder for desulfurization, the sp...

Embodiment 2

[0053] Preparation of desulfurization and dephosphorization agent for semi-steel:

[0054] Mix 5kg of graphite powder, 5kg of calcium silicate, 10kg of potassium carbonate, 5kg of potassium chloride, 20kg of manganese dioxide and 55kg of active lime and passivate it with a passivation solution to obtain a desulfurization and dephosphorization agent for semi-steel.

[0055] Among them, the CaO content in passivated lime is 87%wt.

[0056] Use the desulfurization and dephosphorization agent for semi-steel to desulfurize and dephosphorize the semi-steel:

[0057] After the converter vanadium extraction is completed, the undesulfurized and dephosphorized semi-steel is transported to the injection desulfurization station. Before desulfurization, put the desulfurization and dephosphorization agent and passivated magnesium powder into different material tanks. The material tanks are sealed with dry nitrogen. The carrier sprays passivated magnesium powder for desulfurization, the sp...

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
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a semisteel desulfuration dephosphorization agent and a preparing method and application thereof and belongs to the field of steel smelting. The invention aims at providing a novel semisteel desulfuration dephosphorization agent. The semisteel desulfuration dephosphorization agent is obtained by well mixing and then passivating, by weight, 5 parts of graphite powder, 5-15 parts of calcium metasilicate, 5-10 parts of potassium carbonate, 5-10 parts of potassium chloride, 10-20 parts of manganese dioxide and 50-70 parts of active lime. The invention further discloses the preparing method of the semisteel desulfuration dephosphorization agent and the application in semisteel desulfuration dephosphorization. The preparing method of the semisteel desulfuration dephosphorization agent is simple, effective dephosphorization can be carried out under the premise that the desulfuration rate is guaranteed, less slag steelmaking by a steelmaking converter can be well carried out, and cost is saved.

Description

technical field [0001] The invention relates to a desulfurization and dephosphorization agent for semi-steel, a preparation method and application thereof, and belongs to the field of iron and steel smelting. Background technique [0002] my country is a big country of vanadium-titanium-magnetite. The molten iron smelted from vanadium-titanium-magnetite blast furnace has higher vanadium content than ordinary molten iron, and vanadium is an important resource. Therefore, vanadium must be extracted from molten iron to produce vanadium slag before steelmaking. However, the semi-steel obtained after vanadium extraction has trace amounts of silicon and manganese, which results in slag formation and less heating elements during converter steelmaking, making slagging difficult and dephosphorization extremely difficult. However, it is precisely because of this characteristic of semi-steel that it also provides good conditions for dephosphorization before the converter: no special de...

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 陈炼戈文荪王建曾建华董克平黄正华李龙蒋龙奎杨森祥
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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