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

Castable for grid wall of casting residue basin, and preparation method and application method of castable

A castable and slag injection technology, which is applied in the field of refractory materials, can solve the problems of waste of energy, unused refractory castables for grid walls, burns and scalds on human body, etc., to achieve cost reduction, low price, and satisfactory handling and the effect of loading and unloading requirements

Inactive Publication Date: 2013-11-20
莱芜钢铁集团泰东实业有限公司
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] After the steel ladle is filled with molten steel, there is a certain amount of mixture of molten steel and steel slag in the steel ladle, and the mixture is poured into the slag injection pot. After the slag injection pot is filled and cooled to solid, the pot is turned over. Finally, artificial oxygen cutting is performed on the cooled solid, and a large amount of yellow toxic fumes are produced during the cutting process. On the one hand, the high-temperature liquid generated during the cutting process is very easy to cause burns and scalds to the human body. On the other hand, oxygen cutting wastes a lot of oxygen and causes energy waste. Therefore, a grid wall will be used, and the grid wall will be placed in the slag injection basin, and the characteristics of the grid wall itself will be used to block the formation of large-volume scrap steel blocks
At present, there are very few types of refractory materials that are specifically applied to the slag injection basin at home and abroad. Generally, a kind of anti-sticking coating is used in the slag injection basin. However, refractory castables for making grid walls have not been 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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A castable for pouring slag basin grid walls, the castable is composed of 70% steel slag, 5% silica fume and 25% ordinary cement in terms of weight ratio.

[0028] A method for preparing castables for pouring slag basin grid walls, comprising the following steps:

[0029] 1) Weigh the steel slag (the particle size of the steel slag is 0-5 mm) and silica fume (silicon content greater than or equal to 90%) according to the formula, pour them into the mixer for pre-mixing, and the pre-mixing time is 5 minutes;

[0030] 2) Pour in ordinary cement and stir thoroughly for 8 minutes, and finally pack it into bags.

[0031] Its physical and chemical indicators: compressive strength (110℃×24h) 21Mpa, compressive strength (1500℃×3h) 55Mpa; bulk density (110℃×24h) 2.65g / cm 3 , bulk density (1500℃×3h) 2.61g / cm 3 , The line change after burning (1500℃×3h) is 0.1%.

[0032] The method of using the castable for pouring the grid wall of the slag basin. When using it, pour the prepar...

Embodiment 2

[0034] A casting material for pouring slag basin grid walls, the casting material is composed of 75% steel slag, 5% silica fume, and 20% ordinary cement in terms of weight ratio.

[0035] A method for preparing castables for pouring slag basin grid walls, comprising the following steps:

[0036] 1) Weigh the steel slag (the particle size of the steel slag is 0-10mm) and silica fume (silicon content greater than or equal to 90%) according to the formula, and pour them into the mixer for pre-mixing, and the pre-mixing time is 5 minutes;

[0037] 2) Pour in ordinary cement and stir thoroughly for 9 minutes, and finally pack it into bags.

[0038] Its physical and chemical indicators: compressive strength (110℃×24h) 19.5Mpa, compressive strength (1500℃×3h) 52.5Mpa; bulk density (110℃×24h) 2.72g / cm 3 , bulk density (1500℃×3h) 2.69g / cm 3 , The line change after burning (1500℃×3h) is 0.15%.

[0039] The method of using the castable for pouring the slag basin grid wall. When using ...

Embodiment 3

[0041] A casting material for pouring slag basin grid walls, the casting material is composed of 85% steel slag, 5% silica fume and 15% ordinary cement in terms of weight ratio.

[0042] A method for preparing castables for pouring slag basin grid walls, comprising the following steps:

[0043] 1) Weigh the steel slag (the particle size of the steel slag is 0-20 mm) and silica fume (silicon content greater than or equal to 90%) according to the formula, pour them into the mixer for pre-mixing, and the pre-mixing time is 6 minutes;

[0044] 2) Pour in the silicon dioxide micropowder and stir thoroughly for 10 minutes, and finally pack it into bags.

[0045] Its physical and chemical indicators: compressive strength (110℃×24h) 17Mpa, compressive strength (1500℃×3h) 47Mpa; bulk density (110℃×24h) 2.75g / cm 3 , bulk density (1500℃×3h) 2.70g / cm 3 , The line change after burning (1500℃×3h) is 0.13%.

[0046] The method of using the castable for pouring the slag basin grid wall. Wh...

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
Compressive strengthaaaaaaaaaa
Compressive strengthaaaaaaaaaa
Bulk densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a castable for a grid wall of a casting residue basin, and a preparation method and an application method of the castable. The castable is composed of 65-85wt% of steel slag, 3-10wt% of silica fume and 10-30wt% of adhesive. The preparation method comprises the following steps: mixing all the raw materials, adding water to the mixture, stirring and pouring into a grid wall formwork, vibrating and maintaining, thus obtaining the grid wall which can be used. The castable provided by the invention is low in cost and high temperature resistant, cannot burst, and can be widely used in various grid walls of casting residue basins.

Description

technical field [0001] The invention belongs to the field of refractory materials used in slag injection basins for steelmaking, and in particular relates to a castable for grid walls of slag injection basins and its preparation and use methods. Background technique [0002] After the steel ladle is filled with molten steel, there is a certain amount of mixture of molten steel and steel slag in the steel ladle, and the mixture is poured into the slag injection pot. After the slag injection pot is filled and cooled to solid, the pot is turned over. Finally, artificial oxygen cutting is performed on the cooled solid, and a large amount of yellow toxic fumes are produced during the cutting process. On the one hand, the high-temperature liquid generated during the cutting process is very easy to cause burns and scalds to the human body. On the other hand, oxygen cutting wastes a lot of oxygen and causes energy waste. Therefore, a grid wall will be used, and the grid wall will be...

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
IPC IPC(8): C04B35/66C21B3/04
CPCY02W30/50
Inventor 刘杰巩秀民郭鹏
Owner 莱芜钢铁集团泰东实业有限公司
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