Torpedo tank pouring material

A technology of torpedo tanks and castables, which is applied in the field of refractory materials, can solve the problems of unfavorable high temperature stability and slag erosion resistance, unfavorable thermal shock stability, and low refractoriness, and achieve good thermal shock stability and slag resistance Erosion performance, good social and economic benefits, good wear resistance

Active Publication Date: 2016-03-30
WUGANG REFRACTORY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aluminum oxide content of the invention is 40-70%, the composition is more, the actual refractoriness of the material is low, which is not conducive to high temperature stability and slag erosion resistance; the silicon carbide content is high, the material is brittle and stable to thermal shock bad performance

Method used

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  • Torpedo tank pouring material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The pouring material for the mouth of the torpedo tank in the present embodiment is made up of the composition of following percentage by weight:

[0016] Corundum recycled material: 71.5%; sintered mullite: 8.8%; andalusite: 9.6%; SiC powder: 4.6%; SiO 2 Micropowder: 1.8%; Aluminate cement: 1.8%; Stainless steel fiber: 1.8%; Sodium tripolyphosphate: 0.1%.

[0017] Among them, the Al of corundum-based recycled materials 2 o 3 Weight percent content ≥ 90%, particle size ≤ 5mm, and: 3mm 2 o 3 The weight percentage is ≥70%, and the particle size is ≤1mm, wherein: sintered mullite with a particle size of 0.088mm2 o 3 The weight percentage content is ≥55%, 1mm2 Micronized SiO 2 % by weight ≥ 92%, particle size ≤ 0.088mm; Al of the aluminate cement 2 o 3 Weight percentage ≥ 70%, particle size ≤ 0.088mm.

[0018] Control the particle size and Al of corundum-based recycled materials 2 o 3 The content can ensure the high-temperature physical properties of the castable a...

Embodiment 2

[0020] The pouring material for the mouth of the torpedo tank in the present embodiment is made up of the composition of following percentage by weight:

[0021] Corundum recycled material 79.3%; sintered mullite: 5%; andalusite: 5%; SiC powder: 2%; SiO 2 Micropowder: 4.5%; Aluminate cement: 2.7%; Stainless steel fiber: 1.3%; Sodium tripolyphosphate: 0.2%.

[0022] Al of the corundum-based recycled material 2 o 3 The weight percentage is ≥90%, and the particle size is ≤5mm, of which: 3mm2 o 3 The weight percentage is ≥70%, and the particle size is ≤1mm, wherein: sintered mullite with a particle size of 0.088mm2 o 3 The weight percentage content is ≥55%, 1mm2 Micronized SiO 2 % by weight ≥ 92%, particle size ≤ 0.088mm; Al of the aluminate cement 2 o 3 Weight percentage ≥ 70%, particle size ≤ 0.088mm.

Embodiment 3

[0024] The pouring material for the mouth of the torpedo tank in the present embodiment is made up of the composition of following percentage by weight:

[0025] Corundum recycled material: 70%; sintered mullite: 8.7%; andalusite: 13.5%; SiC powder: 2%; SiO 2 Micropowder: 1%; Aluminate cement: 2%; Stainless steel fiber: 2.3%; Sodium tripolyphosphate: 0.5%.

[0026] Al of the corundum-based recycled material 2 o 3 Weight percentage ≥ 90%, particle size ≤ 5mm, of which: 3mm 2 o 3 The weight percentage is ≥70%, and the particle size is ≤1mm, wherein: sintered mullite with a particle size of 0.088mm2 o 3 The weight percentage content is ≥55%, 1mm2 Micronized SiO 2 % by weight ≥ 92%, particle size ≤ 0.088mm; Al of the aluminate cement 2 o 3 Weight percentage ≥ 70%, particle size ≤ 0.088mm.

[0027] See Table 1 for the physical and chemical properties of the torpedo can mouth castables prepared in each embodiment and prior art.

[0028] Table 1 embodiment 1-3 and the physical ...

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Abstract

The invention discloses a torpedo ladle car opening castable. The castable consists of the following components in percent by weight: 70-80 percent of corundum regenerated materials; 5-10 percent of sintered mullite; 5-15 percent of andalusite, 2-5 percent of SiC powder; 1-5 percent of SiO2 micropowder; 2-5 percent of aluminate cement; 1-3 percent of stainless steel fiber; 0.1-0.5 percent of sodium tripolyphosphate. The torpedo ladle car opening castable disclosed by the invention has good thermal shock resistance and slag corrosion resistance; the anti-scouring, anti-stripping and wear-resistant performance is good; the castable is environment-friendly and energy-saving and the cost performance is higher; the social benefits and the economic benefits are better.

Description

technical field [0001] The invention relates to a pouring material for the mouth of a torpedo tank, which belongs to the technical field of refractory materials. Background technique [0002] As one of the equipments for storing and transporting molten iron, torpedo-type mixed iron car (torpedo tank) has the functions of molten iron tank car and mixed iron furnace at the same time. Its outstanding advantage is that the temperature drops slowly, generally around 10°C / h. With the enlargement of the blast furnace, the use of torpedo tanks became more extensive. The main functions of the torpedo tank are (1) mixing the molten iron to ensure uniformity of the molten iron; (2) transporting the molten iron from the blast furnace to the steel plant; (3) serving as a container for the pretreatment of the molten iron. The mouth of the torpedo tank is scoured and eroded by molten iron and slag during use; the temperature fluctuation caused by the intermittent operation cycle exerts th...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B22D41/02B22D41/12
Inventor姚亚双田先明王志强周辉蔡长秀雷中兴易碧辉郑吉红
OwnerWUGANG REFRACTORY CO LTD