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Bleed hole stemming and method for producing the same

A tap hole and taphole clay technology, applied in blast furnace parts, blast furnaces, furnace types, etc., can solve problems such as the adverse effects of high temperature resistance and anti-erosion performance of taphole clay, and achieve the goal of not easy to rapidly expand, reducing the number of taps, The effect of reducing labor intensity

Active Publication Date: 2008-07-16
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main raw materials it uses are pyrophyllite, clay, silica, etc., and the material contains a lot of SiO 2 , the high temperature resistance and erosion resistance of the gun mud are adversely affected

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Make ingredients according to the following requirements. 5~0mm corundum raw material, the added amount accounts for 40% of the total ingredient weight. 3~0mm silicon carbide raw materials, the added amount accounts for 10% of the weight percentage of the total ingredients. 1~0mm coke powder, the added amount accounts for 10% of the weight percentage of the total ingredients. The 0.088~0mm silicon nitride raw material is added in an amount of 10% of the total ingredient weight percentage. The addition amount of 0.088~0mm clay raw material accounts for 14% of the weight percentage of the total ingredients. The amount of sericite raw material of 0.088~0mm accounts for 3% of the weight percentage of the total ingredients. The addition amount of pyrophyllite raw materials of 0.035 to 0 mm accounts for 5% of the weight percentage of the total ingredients. The addition amount of 5~0μm activated alumina powder accounts for 1% of the weight percentage of the total ingredients. The ...

Embodiment 2

[0061] Make ingredients according to the following requirements. 5~0mm corundum raw material, the added amount accounts for 30% of the total ingredient weight. 3~0mm silicon carbide raw materials, the added amount accounts for 15% of the weight percentage of the total ingredients. 1~0mm coke powder, the added amount accounts for 15% of the weight percentage of the total ingredients. The 0.088-0mm silicon nitride raw material is added in an amount of 7% by weight of the total ingredients. The addition amount of 0.088~0mm clay raw material accounts for 10% of the weight percentage of the total ingredients. The amount of sericite raw material of 0.088~0mm accounts for 7% of the weight percentage of the total ingredients. The pyrophyllite raw material of 0.035 to 0 mm is added in an amount of 8% of the total ingredient weight percentage. The addition amount of 5~0μm activated alumina powder accounts for 3% of the weight percentage of the total ingredients. The adding amount of graphit...

Embodiment 3

[0065] Make ingredients according to the following requirements. 5~0mm corundum raw material, the added amount accounts for 20% of the total ingredient weight. 3~0mm silicon carbide raw materials, the added amount accounts for 20% of the weight percentage of the total ingredients. 1~0mm coke powder, the added amount accounts for 23% of the weight percentage of the total ingredients. The 0.088~0mm silicon nitride raw material is added in a weight percentage of 3% of the total ingredients. The addition amount of 0.088~0mm clay raw material accounts for 5% of the total ingredient weight percentage. The amount of sericite raw material with a thickness of 0.088~0mm accounts for 10% of the weight percentage of the total ingredients. The addition amount of pyrophyllite raw materials with a thickness of 0.035 to 0 mm accounts for 10% of the weight percentage of the total ingredients. The addition amount of 5~0μm activated alumina powder accounts for 5% of the weight percentage of the tota...

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Abstract

The invention relates to a stemming at a taphole; the weight percentages of the components are the following: 20 to 40 of corundum, 10 to 20 of silicon carbide, 3 to 10 of silicon nitride, 10 to 23 of coke powders, 1 to 5 of graphite powders, 3 to 10 of sericite, 1 to 5 of active alumina micropowders, 5 to 15 of clay, 5 to 10 of pyrophyllite, 1 to 3 of metal powders, and +15 to 25 of water-free binder. The stemming adds a plurality of materials with plasticity and good cohesiveness to cause the stemming to easily block the hole and fill interspaces, with good binding performance of new stemming and old stemming; materials with medium and high temperature expansion are added to reduce the size of the stemming contraction at high temperature, and cracks can be avoided; materials with sintering function within different temperature areas are added, so the stemming has good sintering strength in different temperature scopes; materials with high-temperature resistance and good erosion resistance are added, and thus the stemming has high strength at high temperature, washing resistance and erosion resistance.

Description

Technical field [0001] The invention relates to a tap hole mud and a preparation method thereof, in particular to a shot mud used for blocking the tap hole in the ironmaking process of a smelting reduction gasifier, and belongs to the technical field of ironmaking. Background technique [0002] The taphole clay in the prior art is developed and applied for blast furnaces. The larger the volume of the blast furnace, the higher the smelting strength, and the higher the requirements on the blast furnace. The gun mud of the technology of the present invention is developed for the application of a smelting reduction gasifier. The smelting reduction gasifier is the most important production equipment in the non-blast furnace ironmaking process. [0003] The structure of the hearth bottom of the smelting reduction gasifier is similar to that of a blast furnace, but the gas pressure in the hearth is different, which leads to a big difference in the strength of the gun mud. Large blast fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/00C04B35/10C04B35/565C04B35/52C21B7/04
Inventor 甘菲芳夏欣鹏吴志荣陈旭东
Owner BAOSHAN IRON & STEEL CO LTD
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