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Blast furnace stemming

A technology for popping mud and blast furnace, applied in the field of blast furnace mud and preparation, can solve the problems of high temperature, unclean iron, running a large flow, etc., and achieve the effects of long storage time, cost saving and price reduction.

Inactive Publication Date: 2013-04-17
山国强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during long-term use, the taphole will be corroded, and the taphole will be reamed, resulting in shallow taphole, unstable iron flow, unclean iron, or even large flow, which seriously affects the normal production. Iron, and ultimately affect the service life of the blast furnace and the growth of production
The iron mouth is located inside the furnace, and the temperature is high. Under normal circumstances, people cannot enter the furnace for maintenance.

Method used

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  • Blast furnace stemming

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] One for 1080m 3 The blast furnace clay is characterized in that the blast furnace clay is composed of the following components by weight: used waste clay: 10-20 parts; waste high-alumina bricks: 5-15 parts; raw coal gangue: 10-20 parts parts; coal gangue calcined ore: 10~25 parts; composite clay: 10~20 parts; regenerated graphite electrode powder: 10~35 parts; vanadium pentoxide: 8~18 parts, asphalt powder: 3~8 parts; Glydol n 2002: 1.0~1.7 parts; additional binder: 14.5 parts. Preparation method of gun mud: Put all the raw materials into the mixer and pre-mix for 10 minutes; then add 90% of the total amount of binder, and wet mill for 30 minutes; add the remaining 10% of binder, and then wet mill for 10 minutes ;Sliced ​​by a mud slicer, then through a mud extruder, extruded into a shape, and bagged, which is the finished product; the extruded temperature is set at 75°C.

Embodiment 2

[0019] One for 2500m 3 The blast furnace clay is characterized in that the blast furnace clay is composed of the following components by weight: used waste clay: 10-20 parts; waste high-alumina bricks: 5-15 parts; raw coal gangue: 10-20 parts 20 parts; coal gangue calcined cooked ore: 10~25 parts; composite clay: 10~20 parts; regenerated graphite electrode powder: 10~35 parts; vanadium pentoxide: 8~18 parts, asphalt powder: 3~8 parts; Glydol n 2002: 1.0~1.7 parts; Added binder: 14 parts. Preparation method of gun mud: Put all the raw materials into the mixer and pre-mix for 10 minutes; then add 90% of the total amount of binder, and wet mill for 30 minutes; add the remaining 10% of binder, and then wet mill for 10 minutes ;Sliced ​​by a mud slicer, then through a mud extruder, extruded into a shape, and bagged, which is the finished product; the extruded temperature is set at 72°C.

Embodiment 3

[0021] One for 3200m 3 The blast furnace clay is characterized in that the blast furnace clay is composed of the following components by weight: used waste clay: 10-20 parts; waste high-alumina bricks: 5-15 parts; raw coal gangue: 10-20 parts 20 parts; coal gangue calcined cooked ore: 10~25 parts; composite clay: 10~20 parts; regenerated graphite electrode powder: 10~35 parts; vanadium pentoxide: 8~18 parts, asphalt powder: 3~8 parts; Glydol n 2002: 1.0~1.7 parts; Added binder: 13 parts. Preparation method of gun mud: Put all the raw materials into the mixer and pre-mix for 10 minutes; then add 90% of the total amount of binder, and wet mill for 30 minutes; add the remaining 10% of binder, and then wet mill for 10 minutes ;Sliced ​​by a mud slicer, then through a mud extruder, extruded into a shape, and bagged, which is the finished product; the extruded temperature is set at 78°C.

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Abstract

The invention discloses a blast furnace stemming, which is characterized by comprising the following components in parts by weight: 10-20 parts of waste stemming, 5-15 parts of waste alumina brick, 10-20 parts of gangue raw ore, 10-25 parts of gangue calcined processed ore, 10-25 parts of composite clay, 10-33 parts of regenerated graphite electrode powder, 8-18 parts of vanadium pentoxide, 3-8 parts of asphalt powder, 1.0-1.7 parts of Glydoln 2002, and 12-14.5 parts of bonding agent added in addition. The stemming has low cost, and can be used for maintaining a reamed hole at an iron outlet, and the usage and operation property are not lowered during long term of storage of the stemming.

Description

technical field [0001] The invention belongs to the field of refractory plastics for blast furnace ironmaking, and in particular relates to a blast furnace clay and a preparation method thereof. Background technique [0002] The blast furnace is the main equipment for smelting pig iron. After the iron smelting in the blast furnace is completed, the molten iron is released from the taphole. In order to ensure the continuous smelting, the taphole must be blocked. The material that blocks the taphole is called gun mud. However, during long-term use, the taphole will be corroded, and the taphole will be reamed, resulting in shallow taphole, unstable iron flow, unclean iron, or even large flow, which seriously affects the normal production. Iron, and ultimately affect the service life of the blast furnace and the growth of output. The iron mouth is located inside the furnace, and the temperature is high. Under normal circumstances, people cannot enter and maintain it. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 山国强
Owner 山国强
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