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Treatment device and method for molten iron splash in blast furnace taphole duct

A treatment device and treatment method technology, which is applied to blast furnaces, blast furnace details, blast furnace parts, etc., can solve the problems of poor adaptability of on-site disposal, impracticability, and the need to increase the number of tapping times, so as to solve the problem of tapping spatter , flexible and easy-to-operate effects

Pending Publication Date: 2020-08-21
BEIJING SHOUGANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages: This method cannot be realized during normal production and daily maintenance
[0005] However, although this patent application can repair the blast furnace tap hole, the number of taps that can guarantee no molten iron splashing by one grouting still needs to be improved, and the grouting machine needs to be connected to change the mud cannon equipment, and the adaptability to on-site disposal is not strong.

Method used

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  • Treatment device and method for molten iron splash in blast furnace taphole duct

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Experimental program
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Effect test

Embodiment 1

[0069] Combined with the effective volume below 2650m 3 Blast Furnace A method for treating molten iron splashing in a blast furnace tap hole of the present application will be described in detail.

[0070] Step 1: Stabilize the depth of the iron hole to be more than 3m, use a ∮55mm drill bit to drill the iron hole to tap iron.

[0071] Step 2: After the blast furnace has tapped the iron, use the first mud gun to drive the first production gun mud into the iron hole of the blast furnace. The mud was sintered for 30 minutes, and the operation of pulling out the cannon was carried out.

[0072] Step 3: Fill the second mud gun 4 with the second production mud 3, take out the second production mud 3 at the front of the gun head, fill in 30 kg of anhydrous slurry 2, and seal it with 5 kg of water mud 1 The gun head prevents the anhydrous slurry 2 from flowing out when the gun is blocked. The weight ratio of the water taphole mud, the anhydrous slurry and the second production ta...

Embodiment 2

[0080] Combined with the effective volume below 2650m 3 Blast Furnace A method for treating molten iron splashing in a blast furnace tap hole of the present application will be described in detail.

[0081] Step 1: Stabilize the depth of the iron hole to be more than 3m, use a ∮50mm drill bit to drill the iron hole to tap iron.

[0082] Step 2: After the blast furnace has finished ironing, use the first mud gun to drive the first production gun mud into the blast furnace iron mouth hole. Sinter for 30min, then pull out the cannon.

[0083]Step 3: Fill the second mud gun 4 with the second production mud 3, take out the second production mud 3 at the front of the gun head, then put 35 kg of anhydrous slurry 2, and then pack 5 kg of water mud Block the gun head to prevent the anhydrous slurry 2 from flowing out when the gun is blocked. The weight ratio of the water taphole mud, the anhydrous slurry and the second production taphole mud is 5:35:360.

[0084] Step 4: Drilling a...

Embodiment 3

[0090] Combined with the effective volume below 2650m 3 Blast Furnace A method for treating molten iron splashing in a blast furnace tap hole of the present application will be described in detail.

[0091] Step 1: Stabilize the depth of the iron hole to be more than 3m, use a ∮53mm drill bit to drill the iron hole to tap iron.

[0092] Step 2: After the blast furnace has tapped the iron, use the first mud gun to drive the first production gun mud into the iron hole of the blast furnace. The mud was sintered for 30 minutes, and the operation of pulling out the cannon was carried out.

[0093] Step 3: Fill the second mud gun 4 with the second production mud 3, take out the second production mud 3 at the front of the gun head, then put 35 kg of anhydrous slurry 2, and then pack 5 kg of water mud Block the gun head to prevent the anhydrous slurry 2 from flowing out when the gun is blocked. The weight ratio of the water taphole mud, the anhydrous slurry and the second productio...

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Abstract

The invention discloses a treatment device for molten iron splash in a blast furnace taphole duct. The treatment device for the molten iron splash in the blast furnace taphole duct comprises a secondmud monitor, a cement gun, anhydrous slurry and a second production gun mud. The cement gun, the anhydrous slurry and the second production gun mud are all arranged in the second mud monitor and extend from the mouth of the second mud monitor to the interior of the second mud monitor. The invention also provides a treatment method for the molten iron splash in the blast furnace taphole duct. The treatment method for the molten iron splash in the blast furnace taphole duct comprises the blast furnace taphole duct is obtained at a blast furnace taphole; iron is tapped through the blast furnace tap hole duct; the blast furnace taphole duct is blocked with the first production gun mud; the treatment device for the molten iron splash in the blast furnace taphole duct is obtained; a blast furnace taphole grouting duct is obtained at the blast furnace taphole; the blast furnace taphole grouting duct is blocked with the treatment device for the molten iron splash in the blast furnace taphole duct; and then the anhydrous slurry is sintered and solidified to achieve the purpose of preventing molten iron from splashing. The splashing problem of the blast furnace taphole can be solved under the condition of continuous wind in the blast furnace.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy, in particular to a treatment device and method for splashing molten iron in a tap hole of a blast furnace. Background technique [0002] The blast furnace is a closed reverse reactor. The iron slag produced in the production process is discharged out of the furnace through the lower iron hole of the blast furnace, and the gas is discharged from the furnace top into the gas system. The side wall of the blast furnace hearth is generally built with large or small pieces of refractory materials. The refractory masonry of the hearth side wall, the cooling wall and the furnace shell of the blast furnace are affected by the thermal expansion of the material and the temperature gradient during the blast furnace opening and production process. Affected, there will be displacement gaps between the refractory masonry, between the refractory material and the stave, between the stave and the...

Claims

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Application Information

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IPC IPC(8): C21B7/12
CPCC21B7/12
Inventor 郑敬先张小兵杨晓婷芦文凯高广金赵满祥石存广马金芳
Owner BEIJING SHOUGANG CO LTD
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