A kind of blast furnace clay

A technology for taphole clay and blast furnace, which is applied in the field of blast furnace taphole clay and preparation, can solve problems such as affecting the stable tapping of the taphole, difficulty in production planning, and unstable tapping, and achieves the effect of saving costs and improving the instability of tapping water.

Active Publication Date: 2018-07-06
YIXING REFRACTORY EQUIP & MATERIAL FACTORY
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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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  • A kind of blast furnace clay

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Embodiment 1

[0011] Embodiment 1: a kind of clay for 1080m3 blast furnace is characterized in that described blast furnace clay is made up of the following components by weight: 3-1mm bauxite: 20 parts; 1-0mm corundum: 8 parts; 1-0mm Sillimanite: 15 parts; 0.5-0mm magnesia iron oxide: 15 parts; metaclay powder: 9 parts; cobalt aluminum oxide powder: 3 parts, cutting powder: 5 parts; graphite powder: 14 parts, composite carbon powder: 10 parts, medium temperature Asphalt powder: 1 part; the preparation method of gun mud: put the above raw materials into the mixer and mill, and pre-mix for 15 minutes; prepare 13 parts of modified tar, first add 85% of the total amount of modified tar, and wet mill for 35 minutes; Add the remaining 15% modified tar, and then wet mill for 15 minutes; cut into slices with a mud slicer, and then squeeze the mud into sections, and cool to room temperature after cutting into sections. The mud extrusion temperature in this step is set at 55°C; The second step is to...

Embodiment 2

[0012] Embodiment 2: a kind of blast furnace clay for 2500m3 is characterized in that said blast furnace clay is composed of the following components by weight: 3-1mm bauxite: 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 powder: 6 parts, 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 set at 55°C; the second The first step is to prepa...

Embodiment 3

[0013] Embodiment 3: a kind of clay for 3000m3 blast furnace is characterized in that described blast furnace clay is made up of the following components by weight: 3-1mm bauxite: 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 powder: 6 parts, 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 was set at 55°C; the second step P...

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Abstract

The invention discloses blast furnace stemming. The blast furnace stemming is characterized by comprising the following components in parts by weight: 15-20 parts of 1-3mm alumina, 5-8 parts of 0-1mm corundum, 10-15 parts of 0-1mm sillimanite, 8-15 parts of iron magnesium oxide, 8-13 parts of clay, 3-7 parts of cobalt aluminum 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. According to the blast furnace stemming, the aperture of a tap hole can be protected and is not easily changed, and iron is stably tapped; and besides, the use performance and the operation performance of the blast furnace stemming are not degraded in a long-term 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 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 dealt with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 胡新堂戚真健牛顺伟童胜利蒋亚强
Owner YIXING REFRACTORY EQUIP & MATERIAL FACTORY
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