Center coke adding and distributing method

A cloth and sub-center technology, applied in the field of metallurgy, can solve the problems of reduced fuel consumption, large amount of coking in the center, low gas utilization rate, etc., and achieve the effects of reduced fuel consumption, enhanced liquid permeability, and accelerated renewal speed

Inactive Publication Date: 2021-01-15
BENGANG STEEL PLATES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing central coking technology is not conducive to the reduction of fuel consumption due to the

Method used

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  • Center coke adding and distributing method

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Embodiment Construction

[0014] The present invention will be described in detail below in conjunction with the accompanying drawings. As shown in the figure, when the material distribution conditions are met, open the lower sealing valve and the material discharge gate to start material distribution, set according to the material distribution matrix, and close the material discharge gate after the sub-center coke is distributed. The chute is no longer feeding into the furnace, and the chute continues to tilt. After the chute reaches the pure center to set the feeding angle, the feeding gate is opened to the maximum to continue feeding until all the coke in the weighing tank is distributed into the furnace, and the feeding ends.

[0015] The method of the invention enhances the controllability in the process of distributing cloth. In the early stage, the method of coke distribution is the same as that of the original center. When there is no coke in the mining area at the beginning, when the angle is s...

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Abstract

The invention discloses a center coke adding and distributing method. The method comprises the following steps: after the material distribution condition is met, opening a lower sealing valve and a discharging gate to start distributing materials and closing the discharging gate after the amount of sub-center coke is distributed, stopping distributing the materials into a furnace, continuously tilting a chute, opening the discharging gate to the maximum extent to continuously distribute the materials after the chute reaches a pure center set material distribution angle, and finishing materialdistribution until the coke amount in a weighing tank is completely distributed into the furnace. The coke distribution amount of a non-mining area can be greatly reduced, the center coke platform width is reduced, and the pure center coke amount proportion is increased. As the coke amount in the non-mining area is increased, the gas utilization rate is increased; and as the pure center coke amount is increased and the center air permeability is enhanced, the combination of increase of the pure center coke amount and enhancement of the center air permeability has great significance in reducingthe fuel consumption and stabilizing smooth operation of the blast furnace, especially when the unstable quality of raw fuel changes.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for charging and distributing coke for a blast furnace. Background technique [0002] In steel production enterprises, cost reduction is particularly important. The cost of pig iron accounts for more than 60% of the total cost of steel products. In order to ensure the stable growth of economic benefits, while ensuring the output of pig iron, the blast furnace should reduce the ratio of coke to fuel in the furnace, so as to reduce the cost of pig iron and increase the efficiency of enterprises. The central coke cloth is mainly used in blast furnace ironmaking production, which is to add a small amount of coke to the center of the blast furnace by using the furnace top charging equipment to reduce the ore-coke ratio in the narrow range of the center of the blast furnace, improve the air permeability of the center, and make more gas flow Passing ensures the formation of...

Claims

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Application Information

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IPC IPC(8): C21B5/00
CPCC21B5/007C21B5/008
Inventor 周洋丁洪海韩廷全张廷明高维平王志刚
Owner BENGANG STEEL PLATES
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