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

Converter slag mending material

A technology for converter slag and charging material, applied in the direction of manufacturing converters, etc., can solve the problems of slag and slag refractory, and achieve the effect of firm bonding, reducing iron loss, and saving slag splashing time.

Inactive Publication Date: 2013-01-23
河南新锦新材料有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In this way, the three-high concept of "high-purity raw materials, high-pressure molding, and high-temperature firing" advocated by the Japanese is completely negated. Although the slag-splashing furnace is a very good and successful technology, it is still not a perfect technology. , that is, after each furnace of steel is smelted, 2 to 3 minutes (small furnace) and 3 to 5 minutes (large furnace) must be sacrificed for slag splashing operation, so that the effective steelmaking time is almost reduced by 1 / 5 to 1 / 4, and Only the viscosity of the changed slag slows down the solvent effect of FeO on the melting point of the slag, but does not really make the slag more refractory

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
  • Converter slag mending material
  • Converter slag mending material
  • Converter slag mending material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0026] Example : 1.5 tons of slag (with FeO content of 10%) is left as a repairing material after the steel is tapped, and a silicon-calcium alloy (32% of Ca content, 65% of Si content) is used as a reducing agent for repairing operation:

[0027] 1.5 tons of slag contains FeO=150Kg= =2083.33molFeO

[0028] There are Ca+FeO=CaO+Fe and Si+2FeO=SiO 2 +2Fe knowable

[0029] 40 grams of Ca can reduce 1 mol FeO, 14 grams of Si can reduce 1 mol FeO

[0030] The amount of FeO that can be reduced per Kg silicon calcium = + =54.43molFeO

[0031] FeO in 1.5 tons of slag is just reduced and needs silicon calcium weight = =38.275 (kg)

[0032] According to the excess of reducing agent 5% ~ 10%:

[0033] The amount of silicon calcium added = 38.275 × (1 + 5% ~ 10%) = 40.19 ~ 42.10 (kg)

[0034] Therefore, if 1.5 tons of slag with a FeO content of 10% is left, the calcium-silicon alloy (Ca 32、 Si 65 ) is added in an amount of about 41 to 42Kg, and a better repairing effec...

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
melting pointaaaaaaaaaa
melting pointaaaaaaaaaa
Login to View More

Abstract

The invention discloses a converter slag repair charge, which is mainly characterized in that during the converter smelting process, the ΣFeO in the converter slag is controlled at 8% to 12%, and a reducing agent active metal or its alloy is added to the slag after tapping to make the FeO in the slag is all reduced, so that the slag system becomes a CaO-SiO2 binary system or CaO-MgO-SiO2 ternary system refractory material, and it is attached to the furnace wall by shaking the furnace or blowing with N2 to achieve refractory purpose of the furnace. Because the present invention adopts the above scheme, compared with the prior art, the present invention has the advantages of simple, easy, quick and effective furnace repairing operation.

Description

Technical field [0001] The present invention is a technology field of steelmaking refractory materials. It involves a process of using live metal reducing agents to make replenishment furnaces after changing the furnace furnace slag. Background technique [0002] Since the birth of the first transfer in 1956 to more than 80%of the steel, the steel refined materials used before the 1970s, from magnesium bricks to white cloud stone bricks to oil invasion of white cloud stone bricks.In 200-400 furnaces.In the mid -1970s, Watanabe, Japan, invented the magnesium carbon brick, which suddenly increased the age of the turntable furnace to about 1500 times, causing a huge sensation for a while, and magnesium carbon bricks became popular all over the world.By the 1990s, the US LTV company took the lead in adding light -burning MGOs or white clouds to the steelmaking slag in the transfer furnace, and increased the MGO in the residue to 8%to 13%. 2 Qi blew the stab on the stove wall, so that...

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): C21C5/36C21C5/28C04B35/66
Inventor 李明建李明君李烈钧董国防李烈选宋金峰
Owner 河南新锦新材料有限公司
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