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A kind of alloy baking material and its baking method and application

A baking method and alloy technology, applied in the direction of manufacturing converters, etc., can solve the problems of uneven baking temperature of alloys, affecting smelting efficiency, low local temperature, etc. Effect

Active Publication Date: 2021-10-26
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides an alloy baking material and its baking method and application. The lime layer and the alloy layer are cross-laid and then baked, which solves the problem in the prior art that the burner at the bottom of the alloy silo directly burns the The alloy baking temperature caused by heating the alloy is uneven, the local temperature is low, and the addition of molten steel causes a large temperature drop of the molten steel, which affects the smelting efficiency.

Method used

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  • A kind of alloy baking material and its baking method and application

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Embodiment 1

[0046] Lime and aluminum-iron are laid alternately on the top of the aluminum-iron to form a material structure to be baked in which the aluminum-iron layers and the lime layers are arranged alternately in sequence, wherein the aluminum-iron layers are 3 layers and the lime layers are 2 layers. The materials to be baked are aluminum-iron layer-lime layer-aluminum-iron layer-lime layer-aluminum-iron layer from bottom to top. The particle size of aluminum and iron is 25-220mm, and the particle size of lime is 10-50mm. The total weight of aluminum, iron and lime is 3.8t, the weight of each layer of aluminum and iron is 1t, and the weight of each lime layer is 0.4t. The lowermost aluminum-iron alloy layer is baked through a burner for 4 hours.

Embodiment 2

[0048] Lay lime and ferrosilicon alternately on top of ferrosilicon to form a material structure to be baked in which ferrosilicon layers and lime layers are arranged alternately in sequence, wherein ferrosilicon layers are 4 layers and lime layers are 3 layers. The material to be baked is ferrosilicon layer-lime layer-ferrosilicon layer-lime layer-ferrosilicon layer-lime layer-ferrosilicon layer from bottom to top. The particle size of ferrosilicon is 50-200mm, and the particle size of lime is 15-25mm. The total weight of ferrosilicon and lime is 3.7t, the weight of each ferrosilicon layer is 0.7t, and the weight of each lime layer is 0.3t. The ferrosilicon layer at the bottom of the material to be baked is baked through a burner, and the baking time is 3 hours.

Embodiment 3

[0050] Lay lime and ferromanganese alternately on top of the ferromanganese to form a material structure to be baked in which ferromanganese layers and lime layers are arranged alternately in sequence, wherein the ferromanganese layer has 6 layers and the lime layer has 5 layers. The materials to be baked are ferromanganese layer-lime layer-ferromanganese layer-lime layer-ferromanganese layer-lime layer-ferromanganese layer-lime layer-ferromanganese layer-lime layer-ferromanganese layer from bottom to top. The particle size of ferromanganese is 50-200mm, and the particle size of lime is 15-25mm. The total weight of ferromanganese and lime is 5.8t, the weight of each ferromanganese layer is 0.8t, and the weight of each lime layer is 0.2t. The lowermost ferromanganese layer of the material to be baked is baked through a burner, and the baking time is 5 hours.

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Abstract

The invention discloses an alloy baking material and its baking method and application. The alloy baking material includes (N+1) alloy layers and N lime layers, (N+1) alloy layers and The N lime layers are alternately arranged up and down and the outermost ends are all alloy layers, and the mass ratio of (N+1) alloy layers to N lime layers is 0.05-0.5, wherein N is a positive integer . The alloy baking material of this application is used for baking, so that the alloy temperature after baking is high, the temperature is uniform, the heating effect is better, and the holding time is longer; the alloy baking temperature can reach more than 320 ° C, and the temperature of the converter tapping molten steel drops It can be lowered by 15-45°C, and the smelting time can be reduced by 2-10 minutes.

Description

technical field [0001] The invention belongs to the technical field of alloy materials for converter steelmaking, in particular to a baking method for steelmaking alloys. Background technique [0002] Alloys are important raw materials required in the steelmaking process, such as ferro-aluminium, ferro-silicon, ferro-manganese, ferro-chromium, ferro-molybdenum, ferro-vanadium, etc. The moisture content in the alloy directly affects the quality of molten steel and the tapping temperature. Therefore, the alloy The material is baked before use. On the one hand, the role of alloy baking is to remove water to reduce hydrogen in molten steel. On the other hand, the use of alloy after baking can reduce the temperature drop of molten steel during alloy addition and avoid increasing energy consumption. Therefore, in recent years, the alloy baking process has been widely used in the steel smelting process, which plays an important role in improving the quality of steel products and r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C5/28C21C7/00
CPCC21C5/28C21C7/0006
Inventor 初仁生李战军刘金刚邓小旋郝宁王卫华马长文李海波吕延春
Owner SHOUGANG CORPORATION