Skimming tool for blast-furnace casting

A blast furnace tapping and scum skimmer technology, which is applied in the discharge device and other directions, can solve the problems of short service life and high replacement frequency of the scum skimmer, and achieve the effects of improving service life, reasonable aggregate particles, and reducing labor intensity

Inactive Publication Date: 2014-09-17
WUHU WATER PUMP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the short service life of the skimmer in the prior art and the high frequency of repair and replacement, and to provide a skimmer for blast furnace

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] A skimmer for blast furnace tapping in this embodiment is composed of refractory aggregate and binder, and the mass ratio of refractory aggregate to binder is 100:8. The components of the refractory aggregate in this example are composed of the following mass parts: waste high alumina brick 35 kg, quartz sand 18 kg, mullite 30 kg, chromite 12 kg, bentonite 11 kg, kaolin 10 kg, coke 5 kg, fly ash 3 kg, silicon carbide 5 kg, waste ceramics 3 kg, magnesium oxide 6 kg, lanthanum oxide 2 kg, titanium boride 1 kg, thorium oxide 3 kg, Suzhou soil 3 kg, pottery clay 2 kg, aluminum powder 3 kg and zirconia 1 kg.

[0081] It should be noted that waste high-alumina bricks with a particle size of 1.5-3.5 mm are 15 kg, waste high-alumina bricks with a particle size of less than 1.5 mm are 20 kg, and mullite with a particle size of 1.5-3.5 mm is 12 kg , mullite with particle size less than 1.5 mm is 18 kg. The particle size of the above quartz sand and coke: 2.0-2.5 mm, the particl...

Embodiment 2

[0102]The basic content of this example is the same as that of Example 1, the difference is that each component of the refractory aggregate in this example is composed of the following parts by mass: waste high alumina brick 30 kg, quartz sand 15 kg, mullite 25 kg , chromite 10 kg, bentonite 10 kg, kaolin 9 kg, coke 3 kg, fly ash 2 kg, silicon carbide 2 kg, waste ceramics 2 kg, magnesium oxide 5 kg, lanthanum oxide 2 kg, titanium boride 1 kg , 2 kg of thorium oxide, 2 kg of Suzhou soil, 1 kg of pottery clay, 2 kg of aluminum powder, and 1 kg of zirconia.

[0103] It should be noted that waste high-alumina bricks with a particle size of 1.5-3.5 mm are 12 kg, waste high-alumina bricks with a particle size of less than 1.5 mm are 18 kg, and mullite with a particle size of 1.5-3.5 mm is 10 kg , mullite with particle size less than 1.5 mm is 15 kg.

[0104] The components of the binder in this embodiment are composed of the following parts by mass: 50 kg of asphalt, 24 kg of silic...

Embodiment 3

[0122] The basic content of this example is the same as that of Example 1, the difference is that each component of the refractory aggregate in this example is composed of the following parts by mass: waste high alumina brick 40 kg, quartz sand 20 kg, mullite 38 kg , chromite 15 kg, bentonite 12 kg, kaolin 12 kg, coke 6 kg, fly ash 4 kg, silicon carbide 6 kg, waste ceramics 4 kg, magnesium oxide 8 kg, lanthanum oxide 3 kg, titanium boride 2 kg , thorium oxide 5 kg, Suzhou soil 3 kg, pottery clay 2 kg, aluminum powder 4 kg and zirconia 1 kg.

[0123] It should be noted that waste high-alumina bricks with a particle size of 1.5-3.5 mm are 18 kg, waste high-alumina bricks with a particle size of less than 1.5 mm are 22 kg, and mullite with a particle size of 1.5-3.5 mm is 15 kg , mullite with particle size less than 1.5 mm is 23 kg.

[0124] The components of the binder in this embodiment are composed of the following parts by mass: 60 kg of asphalt, 28 kg of silicone resin, 16 ...

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Abstract

The invention discloses a skimming tool for blast-furnace casting, and belongs to the technical field of refractory materials for blast furnace. The skimming tool consists of a refractory aggregate and a binder. The refractory aggregate comprises waste high-aluminum brick, mullite, quartz sand, chromite, bentonite, kaolin, coke, fly ash, silicon carbide, ceramic waste, magnesium oxide, lanthanum oxide, titanium boride, thorium oxide, Suzhou soil, clay, aluminium powder and zirconia; and the binder is composed of asphalt, silicone resin, melamine formaldehyde resin, butadiene nitrile rubber, 2-imidazolidinone, starch, sodium triacetoxyborohydride, salt, Cetyl trimethyl ammonium chloride and chloroprene rubber. The skimming tool provided by the invention through specific component ratio greatly prolongs the service life of the skimming tool to 60 days without repair, does not require supplementary material in the use process, greatly reduces the stokehold labor intensity, and guarantees the stable, secure and smooth conditions of the high furnace.

Description

technical field [0001] The invention relates to the technical field of refractory materials for blast furnaces, and more specifically relates to a slag skimmer for blast furnace tapping. Background technique [0002] The skimmer, also known as the sand port, is a device that promotes the effective separation of high-temperature liquid slag (1400-1500 ℃) and molten iron (1400-1600 ℃) during the blast furnace tapping process. The slag skimmer is connected to the main iron ditch of the blast furnace at the top, the branch iron ditch at the bottom, and the bypass is connected to the slag ditch. It is at the core node position on the casting yard and is also the only node to ensure the effective separation of slag and iron. Direct movement is very important, directly affecting the normal production order of the blast furnace, and then affecting the economic benefits of the iron and steel enterprises. [0003] In the actual production process, the skimmer is suspended in the main...

Claims

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Application Information

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IPC IPC(8): C04B35/66C21B7/14
Inventor 唐爱军
Owner WUHU WATER PUMP MFG
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