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Sand port with long service life for blast furnace tapping

A blast furnace tapping and sand mouth technology, which is applied in the discharge device and other directions, can solve the problems of high replacement frequency and short service life of the sand mouth, and achieve the effects of ensuring furnace conditions, improving service life, and good thermal stability

Inactive Publication Date: 2015-01-07
吴雪健
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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 shortcomings of short service life and high frequency of repair and replacement in the prior art, and provide a long-lived sand port for blast furnace tapping. The preparation method greatly improves the service life of the sand mouth, and the manufacture is simple and convenient, ensuring the normal production order of the blast furnace

Method used

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  • Sand port with long service life for blast furnace tapping
  • Sand port with long service life for blast furnace tapping
  • Sand port with long service life for blast furnace tapping

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A long-lived sand hole for blast furnace iron tapping in this embodiment, each component of the refractory aggregate is composed of the following parts by mass: waste high alumina brick 40kg, mullite 32kg, chromite 14kg, quartz sand 16kg, kaolin 13kg, Silicon carbide 5kg, waste ceramics 4kg, coke 4kg, clay 1kg, bentonite 11kg, fly ash 3kg, zinc oxide 2kg, sodium hexametaphosphate 1kg, cerium sulfide 4kg, Suzhou soil 3kg and aluminum powder 3kg.

[0028] It is necessary to explain that the waste high alumina brick with a particle size of 1.5-3.5mm is 18kg, the waste high alumina brick with a particle size of less than 1.5mm is 22kg; the mullite with a particle size of 1.5-3.5mm is 12kg, and Mullite smaller than 1.5mm is 20kg; quartz sand with a particle size of 1.5-3.5mm is 7kg, and quartz sand with a particle size smaller than 1.5mm is 9kg. The particle size of the above clay and coke is 2.0-2.5mm, the particle size of chromite and fly ash is 1.0-2.0mm, and the particle...

Embodiment 2

[0060] The basic content of this embodiment is the same as that of Example 1, except that the components of the refractory aggregate in this embodiment are composed of the following parts by mass: high alumina brick 45kg, mullite 36kg, chromite 15kg, quartz sand 18kg, kaolin 15kg, silicon carbide 6kg, waste ceramics 5kg, coke 6kg, clay 2kg, bentonite 12kg, fly ash 4kg, zinc oxide 3kg, sodium hexametaphosphate 1kg, cerium sulfide 5kg, Suzhou soil 3kg and aluminum powder 4kg.

[0061] It should be noted that the waste high alumina brick with a particle size of 1.5-3.5mm is 20kg, the waste high alumina brick with a particle size of less than 1.5mm is 25kg; the mullite with a particle size of 1.5-3.5mm is 14kg, and the particle size Mullite less than 1.5mm is 22kg; quartz sand with a particle size of 1.5-3.5mm is 8kg, and quartz sand with a particle size of less than 1.5mm is 10kg.

[0062] The components of the binder in this embodiment are composed of the following parts by mass...

Embodiment 3

[0089] The basic content of this embodiment is the same as that of Example 1, except that the components of the refractory aggregate in this embodiment are composed of the following parts by mass: waste high alumina brick 35kg, mullite 25kg, chromite 12kg, quartz 14kg of sand, 12kg of kaolin, 2kg of silicon carbide, 3kg of waste ceramics, 3kg of coke, 1kg of clay, 10kg of bentonite, 2kg of fly ash, 2kg of zinc oxide, 1kg of sodium hexametaphosphate, 2kg of cerium sulfide, 2kg of Suzhou soil and 2kg of aluminum powder.

[0090] It should be noted that waste high alumina bricks with a particle size of 1.5-3.5mm are 15kg, waste high alumina bricks with a particle size of less than 1.5mm are 20kg; mullite with a particle size of 1.5-3.5mm is 10kg, and Mullite smaller than 1.5mm is 15kg; quartz sand with a particle size of 1.5-3.5mm is 6kg, and quartz sand with a particle size smaller than 1.5mm is 8kg.

[0091] The components of the binder in this embodiment are composed of the fo...

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Abstract

The invention discloses a sand port with long service life for blast furnace tapping and belongs to the technical field of slag and iron separation equipment in a blast furnace tapping process. The sand port is prepared from the following components including a refractory aggregate and a binder, wherein the refractory aggregate is prepared from the following components including waste high alumina bricks, mullite, chromite, quartz sands, kaolin, silicon carbide and waste ceramics; the binder is prepared from the following components including asphalt, organic silicone resin, phenolic resin, melamine formaldehyde resin, chloroprene rubber, benzoic acid and a compound additive. According to the sand port, by virtue of creative component ratio, the service life of the prepared sand port is greatly prolonged and can reach about 50 days without repairing; as materials do not need to be fed in the using process, the labor intensity in front of a furnace is greatly lowered, and the condition of the blast furnace is ensured to be stable, safe and smooth.

Description

technical field [0001] The invention relates to the technical field of slag-iron separation equipment in the blast furnace tapping process, and more specifically, relates to a long-lived sand hole for blast furnace tapping. Background technique [0002] As we all know, the sand port is an important slag-iron separation equipment in the blast furnace tapping process. The sand port is also called a slag skimmer, which is a device that promotes the effective separation of high-temperature liquid slag and molten iron in the blast furnace tapping process. The sand mouth 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. The performance of the sand mouth is very important to the stability and smoothness of the blast furnace tapping process, which direc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C21B7/14
CPCC04B35/66C21B7/14
Inventor 吴雪健杨建梁健张向阳吴雯雯陈小龙
Owner 吴雪健