Large-sized blast furnace tap-hole clay

A technology for taphole and blast furnace, applied in the field of large-scale blast furnace taphole and preparation, can solve the problems of difficulty in production planning, affecting the stable tapping of the tap hole, and changing the hole diameter of the tap hole, so as to improve the instability of tap water and save costs. Effect

Inactive Publication Date: 2016-01-27
张婷
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, when smelting some special iron ores, such as iron ores with high vanadium and titanium content, because the melting point of vanadium and titanium oxides is very high, which is higher than the iron tapping temperature, the iron cannot be melted during tapping, and will be deposited on the tap. The tap hole will lead to thicker and thicker knots, which will cause the hole diameter of the tap hole to change; under high temperature, the tap hole cannot be dealt with in time. stable, it is very easy to cause molten iron to run in a large flow and spray rockets, which brings difficulties to arrange the production plan of blast furnace for normal tapping

Method used

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  • Large-sized blast furnace tap-hole clay

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Effect test

Embodiment 1

[0011] Embodiment 1: a kind of be used for 2580m3 large-scale blast furnace clay, it is characterized in that described large-scale blast furnace clay is made up of the following components by weight: 3-0mm ferrochrome spinel: 20 parts; 1-0mm corundum: 8 Parts; 1-0mm sillimanite: 15 parts; 0.5-0mm magnesia iron oxide: 15 parts; partial clay powder: 9 parts; cobalt aluminum oxide powder: 3 parts, cutting powder: 5 parts; graphite powder: 14 parts, composite carbon 10 parts of powder, medium temperature asphalt powder: 1 part; the preparation method of gun clay: put the above raw materials into the mixer and pre-mix for 15 minutes; prepare 13 parts of modified tar, first add 85% of the total amount of modified tar, Wet milling for 35 minutes; add the remaining 15% modified tar, and then wet milling for 15 minutes; slice through a mud slicer, and then form the mud by extrusion, cut into sections and cool to room temperature. The temperature of the mud in this step is set to The t...

Embodiment 2

[0012] Embodiment 2: a kind of be used for 3000m Large-scale blast furnace clay, it is characterized in that described large-scale blast furnace clay is made up of the following components by weight: 3-0mm ferrochrome spinel: 19 parts; 1-0mm corundum: 7 Parts; 1-0mm sillimanite: 14 parts; 0.5-0mm magnesia iron oxide: 15 parts; partial clay powder: 10 parts; cobalt aluminum oxide powder: 5 parts, cutting powder: 5 parts; graphite powder: 18 parts, composite carbon 6 parts of powder, medium temperature asphalt powder: 1 part. The preparation method of gun mud: Put all the raw materials into the mixer and pre-mix for 15 minutes; prepare 14 parts of modified tar, first add 85% of the total amount of modified tar, wet mill for 35 minutes; add the remaining 15% Modified tar, then wet milled for 15 minutes; sliced ​​by a mud slicer, and then passed through a mud extruder, extruded to form, cut into sections and cooled to room temperature, and the extruded temperature in this step was...

Embodiment 3

[0013] Embodiment 3: a kind of be used for 3800m Large blast furnace clay, it is characterized in that described large blast furnace clay is made up of the following components by weight: 3-0mm ferrochrome spinel: 20 parts; 1-0mm corundum: 6 Parts; 1-0mm sillimanite: 14 parts; 0.5-0mm magnesia iron oxide: 13 parts; partial clay powder: 10 parts; cobalt aluminum oxide powder: 5 parts, cutting powder: 5 parts; graphite powder: 20 parts, composite carbon 6 parts of powder, medium temperature asphalt powder: 1 part. The preparation method of gun mud: put all the raw materials into the mixer and pre-mix for 15 minutes; prepare 15 parts of modified tar, first add 85% of the total amount of modified tar, and wet mill for 35 minutes; add the remaining 15% to modify tar, and then wet milled for 15 minutes; sliced ​​by a gun mud slicer, and then passed through a mud extruder, extruded into shape, cut into sections and cooled to room temperature, and the extruded temperature in this step...

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Abstract

The invention discloses blast furnace tap-hole clay. The blast furnace tap-hole clay is characterized by consisting of the following components in parts by weight: 15-20 parts of 3-0mm chromohercynite, 5-8 parts of 1-0mm corundum, 10-15 parts of 1-0mm sillimanite, 8-15 parts of 0.5-0mm iron magnesium oxide, 8-13 parts of clay-like powder, 3-7 parts of aluminum cobalt oxide powder, 5-10 parts of cutting powder, 7-25 parts of graphite powder, 5-10 parts of composite carbon powder and 1-2 parts of medium-temperature asphalt powder. Through adoption of the tap-hole clay, tap-hole diameter can be stabilized, and stable tapping is realized. Moreover, the use performance and operation performance of the tap-hole clay do not degrade in a long-time storage process.

Description

technical field [0001] The invention belongs to the field of refractory plastics for blast furnace ironmaking, and in particular relates to a large-scale blast furnace clay and a preparation method thereof. Background technique [0002] The blast furnace is the main equipment for smelting molten iron. After the blast furnace smelts iron, the molten iron needs to be released through the blast furnace taphole. In order to ensure continuous smelting, the taphole must be blocked. The material that blocks the taphole is called gun mud. . At present, when smelting some special iron ores, such as iron ores with high vanadium and titanium content, because the melting point of vanadium and titanium oxides is very high, which is higher than the tapping temperature, the iron cannot be melted during tapping, and will be deposited on the tapping surface. The tap hole, resulting in thicker knots, resulting in changes in the hole diameter of the tap hole; generally, the tap hole cannot be...

Claims

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Application Information

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