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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 insufficient iron flow, etc., and achieve the effects of macro and micro structure improvement, performance improvement, corrosion resistance and infiltration resistance

Active Publication Date: 2011-06-22
长兴云峰炉料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the intensification of smelting, the need to increase production has become increasingly prominent, and the requirements for the amount of iron passing through the main iron channel have become more and more stringent, but the amount of iron passing through is not ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The percentage by weight of each component in the pouring material described in embodiment 1 is alumina 8%; Brown corundum 54%; SiC12%; Modified nano-carbon powder 4%; SiO 2 Micropowder 5%; calcium aluminate cement 3%; α-Al 2 o 3 Micro powder 7%; explosion-proof fiber 0.03%; metal silicon powder 1.47%; melamine 0.3%; AL(OH) 3 and Mg(OH) 2 Composite sol suspension 5.2%.

Embodiment 2

[0013] The percentage by weight of each component in the pouring material described in embodiment 2 is alumina 10%; Brown corundum 58%; SiC10%; Modified nano-carbon powder 3%; SiO 2 Micropowder 3%; calcium aluminate cement 2%; α-Al 2 o 3 Micro powder 7%; explosion-proof fiber 0.05%; metal silicon powder 0.95%; melamine 0.5%; AL(OH) 3 and Mg(OH) 2 Composite sol suspension 5.5%.

Embodiment 3

[0014] The percentage by weight of each component in the pouring material described in embodiment 3 is alumina 5%; Brown corundum 50%; SiC15%; Modified nano carbon powder 5%; SiO 2 Micropowder 6%; calcium aluminate cement 5%; α-Al 2 o 3 Micro powder 8%; explosion-proof fiber 0.02%; metal silicon powder 0.58%; melamine 0.4%; AL(OH) 3 and Mg(OH) 2 Composite sol suspension 5%.

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PUM

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Abstract

The invention discloses a main iron runner pouring material. The pouring material comprises alumina, brown aluminum oxide, SiC, modified nano carbon powder, SiO2 micropowder, calcium aluminate cement, alpha-Al2O3 micropowder, explosion-proof fiber, metal silicon powder, sodium tripolyphosphate and AL(OH)3 and Mg(OH)2 composite sol suspension. In the invention, the AL(OH)3 and Mg(OH)2 composite sol suspension is used as a nano ceramic binding agent and directly added into a mixture and forms a spinel nano structure substrate by in situ synthesis reaction to obtain the nano AL2O3 and MgO composite oxide ceramic combined main iron runner pouring material disclosed by the invention; after carrying out the secondary spinel synthesis reaction, densification is generated along with expansion under constraint, and thereby, macro-and-micro structure improvement, performance improvement and durability enhancement are obtained, and the main iron runner pouring material with high erosion resistance and infiltrating resistance, scour resistance, high thermal shock resistant stability and large iron flux is prepared.

Description

technical field [0001] The present invention relates to refractory castables. Background technique [0002] The existing main iron trench castable is common AL 2 o 3 -SiC-C castables, but generally AL 2 o 3 -SiC-C main iron ditch castable at 2500m 3 It is used on a blast furnace, and the amount of iron passing through at one time is 120,000 tons. With the strengthening of smelting, the need to increase production has become increasingly prominent, and the requirements for the amount of iron passing through the main iron trough at one time have become more and more stringent, but the amount of iron passing through is not ideal. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a castable for the main iron trough with a more ideal amount of iron. The main iron ditch castable of the present invention is in 2500m 3 Used in blast furnaces, the amount of iron passing through at one time is more than 170,000 tons. ...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 佘成其马少杰
Owner 长兴云峰炉料有限公司
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