Unlock instant, AI-driven research and patent intelligence for your innovation.

Electric furnace bottom ramming material

A technology of ramming material and furnace bottom, applied in the field of refractory materials, can solve the problems of low thermal conductivity, unfavorable rapid cooling of blast furnace body, affecting service life, etc., to reduce environmental pollution, improve blast furnace life, and reduce waste.

Inactive Publication Date: 2022-02-11
海城利尔麦格西塔材料有限公司
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The thermal conductivity of the ramming material is low, which is not conducive to the rapid cooling of the blast furnace body, thus affecting the service life. For this reason, this invention proposes a new solution

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
  • Electric furnace bottom ramming material
  • Electric furnace bottom ramming material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: A ramming material at the bottom of an electric furnace is made of the following raw materials in parts by weight: magnesia: 60; calcium oxide: 30; iron oxide: 8; recycled aluminum-magnesium-carbon brick particles: 1; alumina: 2 ; Silica: 2; Binder: 5. The particle size of magnesium oxide: 0.1-2mm; the particle size of calcium oxide: 1-3mm; the particle size of iron oxide: 2-5mm; the particle size of recycled aluminum-magnesium-carbon brick particles: 2-5mm; the particle size of alumina: 5-10mm; the particle size of silica: 1-3mm, the binder is MgCl 2 .6H 2 O is diluted with water to form brine with a specific gravity of 1.2.

[0019] A preparation method for electric furnace bottom ramming material, comprising the following steps:

[0020] S1: Crushing the recycled aluminum-magnesium-carbon bricks, using a pulverizer for crushing, and the particle size of the crushed particles is 0-10mm;

[0021] S2: Screening and filtering the crushed recycled alumin...

Embodiment 2

[0024] Embodiment 2: A ramming material at the bottom of an electric furnace is made of the following raw materials in parts by weight: magnesia: 60; calcium oxide: 30; iron oxide: 8; recycled aluminum-magnesium-carbon brick particles: 3; alumina: 2 ; Silica: 2; Binder: 5. The particle size of magnesium oxide: 0.1-2mm; the particle size of calcium oxide: 1-3mm; the particle size of iron oxide: 2-5mm; the particle size of recycled aluminum-magnesium-carbon brick particles: 2-5mm; the particle size of alumina: 5-10mm; the particle size of silica: 1-3mm, the binder is MgCl 2 .6H 2 O is diluted with water to form brine with a specific gravity of 1.2.

[0025] A preparation method for electric furnace bottom ramming material, comprising the following steps:

[0026] S1: Crushing the recycled aluminum-magnesium-carbon bricks, using a pulverizer for crushing, and the particle size of the crushed particles is 0-10mm;

[0027] S2: Screening and filtering the crushed recycled alumin...

Embodiment 3

[0030] Embodiment 3: A ramming material at the bottom of an electric furnace is made of the following raw materials in parts by weight: magnesia: 60; calcium oxide: 30; iron oxide: 8; recycled aluminum-magnesium-carbon brick particles: 5; aluminum oxide: 2 ; Silica: 2; Binder: 5. The particle size of magnesium oxide: 0.1-2mm; the particle size of calcium oxide: 1-3mm; the particle size of iron oxide: 2-5mm; the particle size of recycled aluminum-magnesium-carbon brick particles: 2-5mm; the particle size of alumina: 5-10mm; the particle size of silica: 1-3mm, the binder is MgCl 2 .6H 2 O is diluted with water to form brine with a specific gravity of 1.2.

[0031] A preparation method for electric furnace bottom ramming material, comprising the following steps:

[0032] S1: Crushing the recycled aluminum-magnesium-carbon bricks, using a pulverizer for crushing, and the particle size of the crushed particles is 0-10mm;

[0033] S2: Screening and filtering the crushed recycled...

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses an electric furnace bottom ramming material, and relates to the technical field of refractory materials. The invention relates to an electric furnace bottom ramming material which is prepared from the following raw materials in parts by weight: 60 parts of magnesium oxide; 30 parts of calcium oxide; 8 parts of iron oxide; 6 parts of recovered alumina-magnesia carbon brick particles; 2 parts of aluminum oxide; 2 parts of silicon dioxide; and 4-5 parts of a binding agent. The granularity of the magnesium oxide is 0.1 to 2mm; the granularity of the calcium oxide is 1-3mm; the granularity of the iron oxide is 2-5mm; the particle size of the recovered alumina-magnesia carbon brick particles is 2-5mm; the particle size of the aluminum oxide is 5-10 mm; and the particle size of the silicon dioxide is 1-3mm. By adding the waste alumina-magnesia carbon brick particles into the raw materials, on one hand, when the working temperature of the ramming material layer rises, the ramming material layer reaches the heat conductivity coefficient matched with the carbon bricks and a cooling wall, so that normal heat conduction is guaranteed, the overall construction structure is not damaged, and the requirement for prolonging the service life of the blast furnace is met; and on the other hand, the waste alumina-magnesia carbon bricks are utilized, so that the waste of resources and the environmental pollution are reduced.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a ramming material for the bottom of an electric furnace. Background technique [0002] Ramping material refers to the unshaped refractory material that is constructed by ramming (manual or mechanical) and hardened under the action of heating above normal temperature. It is made by mixing refractory aggregate, powder, binder, admixture and water or other liquids with a certain grade. According to the classification of materials, there are high alumina, clay, magnesia, dolomite, zirconium and silicon carbide-carbon refractory ramming materials. [0003] The thermal conductivity of the ramming material is low, which is not conducive to the rapid cooling of the furnace body of the blast furnace, thus affecting the service life. Therefore, the present invention proposes a new solution. Contents of the invention [0004] The object of the present invention is to provi...

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): C04B35/043C04B35/63C04B35/626
CPCC04B35/043C04B35/62204C04B35/6303C04B35/62605C04B2235/3208C04B2235/3217C04B2235/3418C04B2235/5427
Inventor 张义先赵现华金钊侯中阳
Owner 海城利尔麦格西塔材料有限公司