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Lightweight reformed main iron runner pouring material

A technology of castables and main iron channels, applied in the field of refractory castables, can solve the problems of poor thermal shock resistance, poor thermal insulation effect, poor thermal insulation performance, etc., and achieve excellent thermal shock resistance, low thermal conductivity, The effect of reducing the consumption of refractories

Inactive Publication Date: 2011-06-22
佘成其
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Poor insulation performance
Especially when the blast furnace is closed, the thermal insulation performance is poor. It is necessary to insert 3-4 simple gas pipes in the main iron trench for thermal insulation, but even so, the thermal insulation effect is still not good.
This is easy to cause cracks due to temperature drop
[0004] 2. Poor thermal shock resistance
Once the wind is off, cracks of more than 5mm will easily appear on the side of the main iron ditch, which will affect the amount of iron passing through

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The percentage by weight of each component in the pouring material described in embodiment 1 is alumina 12%; Brown corundum 47%; SiC14%; SiO 2 Micropowder 5%; α-Al 2 o 3 7% micropowder; 4% spherical asphalt; 3% aluminum oxide hollow ball; 0.03% explosion-proof fiber; 1.17% metal silicon powder; 3% andalusite concentrate powder; 3.5% calcium aluminate cement;

Embodiment 2

[0023] The percentage by weight of each component in the pouring material described in embodiment 2 is alumina 10%; Brown corundum 50%; SiC14%; SiO 2 Micropowder 3%; α-Al 2 o 3 5% micropowder; 5% spherical asphalt; 5% aluminum oxide hollow ball; 0.05% explosion-proof fiber; 1.45% metal silicon powder; 4% andalusite concentrate powder; 2% calcium aluminate cement;

Embodiment 3

[0024] The percentage by weight of each component in the pouring material described in embodiment 3 is bauxite 10%, brown corundum 45%; SiC 15%; SiO 2 Micropowder 4%; α-Al 2 o 3 8% micropowder; 4% spherical asphalt; 4% aluminum oxide hollow ball, 0.02% explosion-proof fiber; 0.78% metal silicon powder; 5% andalusite concentrate powder; 4% calcium aluminate cement; 0.2% sodium tripolyphosphate.

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PUM

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Abstract

The invention discloses a lightweight reformed main iron runner pouring material. The pouring material comprises alumina, brown aluminum oxide, SiC, SiO2 micropowder, alpha-Al2O3 micropowder, spherical asphalt, aluminum oxide hollow sphere, explosion-proof fiber, metal silicon powder, andalusite fine ore powder, calcium aluminate cement and sodium tripolyphosphate. In the invention, lightweight reformation is carried out on the traditional heavy refractory material iron runner material by introducing the aluminum oxide hollow sphere into a main iron runner material; and due to the popularization and application of the lightweight reformed main iron runner pouring material, the consumption of the refractory material can be reduced for a user, the heat preservation and energy saving of high-temperature equipment are favorably promoted. By adding the aluminum oxide hollow sphere, the volume density of the product is reduced, the heat conduction coefficient is reduced, and the heat preserving effect on the main iron runner pouring material is achieved.

Description

technical field [0001] The invention relates to a refractory pouring material. Background technique [0002] The existing main iron ditch castables are extra heavy castables. The condition of the blast furnace, the grade of raw materials, the quality of sintered ore, and equipment reasons will all cause the blast furnace to be shut down for maintenance. Often, the wind shutdown for maintenance has a huge impact on the amount of iron in the main iron communication of the blast furnace. There are many reasons for the impact. A large part of the reasons are caused by the following two. [0003] 1. Poor thermal insulation performance. Especially when the blast furnace is shut down, the thermal insulation performance is poor. It is necessary to insert 3-4 simple gas pipes in the main iron ditch to keep the thermal insulation, but even so, the thermal insulation effect is still not good. This easily leads to cracks due to temperature drop. [0004] 2. Poor thermal shock resi...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 佘成其马少杰
Owner 佘成其
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