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Blast furnace burden distribution method and device

A technology for distributing and charging charges, which is applied in the field of blast furnace distribution methods and devices, can solve the problems of low gas utilization rate, insufficient air permeability in blast furnace block belts and soft melting areas, etc.

Active Publication Date: 2018-12-18
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a method and device for distributing materials for a blast furnace, which is used to solve problems in the prior art, such as lack of air permeability and gas Technical issues with underutilization

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  • Blast furnace burden distribution method and device
  • Blast furnace burden distribution method and device

Examples

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Embodiment 1

[0029] This embodiment provides a blast furnace cloth distribution method, such as figure 1 As shown, the method includes:

[0030] S110, determining the batch weight of each charge, the charge comprising: coke and ore;

[0031] Here, coke includes: small-sized coke and large-sized coke; ore includes: large-sized sintered ore, small-sized sintered ore, pellets, and lump ore. Among them, the particle size of large coke is greater than 25mm, the particle size of small coke is 12-25mm, the particle size of large-size sintered ore is greater than 11mm, and the particle size of small-sized sintered ore is 4-11mm.

[0032] Because blast furnaces of different specifications have different production requirements, the required charge and batch weight are also different. In this embodiment, it is based on the batch weight (coke batch) of the effective volume coke of the blast furnace. For example, the thickness of the coke batch at the throat of the blast furnace is not less than 0.5...

Embodiment 2

[0047] This embodiment provides a blast furnace distribution device, such as figure 2 As shown, the device includes: a determination unit 21 and a cloth unit 22; wherein,

[0048] Determining unit 21 is used to determine the batch weight of each burden, and described burden comprises: coke and ore; Here, coke comprises: coke of small piece and large coke; and lump ore, etc. Among them, the particle size of large coke is greater than 25mm, the particle size of small coke is 12-25mm, the particle size of large-size sintered ore is greater than 11mm, and the particle size of small-sized sintered ore is 4-11mm.

[0049] Because blast furnaces of different specifications have different production requirements, the required charge and batch weight are also different. In this embodiment, it is based on the batch weight (coke batch) of the effective volume coke of the blast furnace. For example, the thickness of the coke batch at the throat of the blast furnace is not less than 0.5...

Embodiment 3

[0062] In practical application, when using the methods and devices provided in the above embodiments to distribute material into the blast furnace, the specific implementation is as follows:

[0063] With an effective volume of 3200m 3 Taking the blast furnace as an example, the determined charge and batch weight include: 18.8 tons of coke batch, including: 17 tons of large coke and 1.8 tons of small coke.

[0064] The batch weight of ore is 89.5 tons, including: 46 tons of large-sized sintered ore, 16.5 tons of small-sized sintered ore, 13.5 tons of pellets, and 13.5 tons of lump ore.

[0065] After determining the ore batch and the coke batch, according to the preset distribution sequence and the distribution matrix corresponding to each charge, the charges are sequentially distributed into the blast furnace. The preset distribution sequence includes: large coke, small Grain size sinter, large size sinter + small piece coke; that is, first put in large piece coke, then put...

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Abstract

The invention provides a blast furnace burden distribution method and device. The blast furnace burden distribution method comprises the steps that the batch weight of each charging material is determined, and the charging materials comprise coke and ore; the charging materials are distributed into the blast furnace sequentially according to the preset distribution sequence and distribution matrixcorresponding to the charging materials; the preset distribution sequence includes large coke, small-particle-size sinter, large-particle-size sinter and small coke; and the particle size of the large coke is greater than 25mm, the particle size of the small coke is 12-25mm, the particle size of the large-particle-size sinter is greater than 11mm, and the particle size of the small-particle-sizesinter is 4-11mm.

Description

technical field [0001] The invention relates to the technical field of blast furnace smelting, in particular to a blast furnace material distribution method and device. Background technique [0002] During blast furnace smelting, the furnace is divided into five areas from top to bottom: massive zone, soft melting zone, dripping zone, tuyere combustion zone, and hearth slag iron zone. The blast furnace material distribution method plays a decisive role in the shape of the massive belt and the soft melting zone, the air permeability and the gas utilization rate of the blast furnace. [0003] In the prior art, due to the unreasonable way of distributing materials, the air permeability of the massive belt and the softening area of ​​the blast furnace is insufficient, and the gas utilization rate is not high. Contents of the invention [0004] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a method and device for distributin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B5/00
CPCC21B5/008
Inventor 谢友阳董汉东李昕
Owner 武汉钢铁有限公司
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