Blast Furnace Precise Cloth Coke Method

Abstract

The invention provides a blast furnace accurate coke distribution method. The method comprises the following steps that SA, the type of a material batch of a material of a furnace top material tank isdetected; SB, a material distribution mode is selected according to the material batch type of the material of the furnace top material tank, wherein the material distribution mode comprises a conventional multi-ring material distribution mode and an accurate coke distribution mode; and SC, when the material distribution mode is selected as the accurate coke distribution mode, the total circle number C of the material distribution, the total ring number N of the material distribution and the circle number C1 from the 1th ring to the N-1th ring correspondingly calculated, it is judged that whether the angular difference alpha between the chute inclination angle of the N-1th ring and the chute inclination angle of the Nth ring is larger than K degrees or not through comparison, wherein K isa set value, if the condition is not met, the conventional multi-ring material distribution mode is executed until the material tank is emptied, then material distribution is completed, whether the actual distribution circle number CACT is larger than or equal to C1 is judged in real time, and if the condition is met, a material flow valve closing command is sent out, a material flow valve is closed to the opening degree gamma 2, so that coke is stopped from being distributed in the furnace. According to the blast furnace accurate coke distribution method, the coke on a middle ring area is eliminated.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to blast furnace ironmaking, in particular to a blast furnace precision coke distribution method. Background technique [0002] The central coking technology is conducive to the high production of the blast furnace, but the fuel consumption is relatively high due to the poor utilization of gas in the middle ring and the center. Especially in the process of the chute tilting toward the center, about 15% of the coke is distributed in the middle ring, which causes poor gas utilization in the middle ring. [0003] To sum up, the following problems exist in the prior art: the existing method for distributing materials for blast furnaces has poor gas utilization in the middle ring zone. Contents of the invention [0004] The invention provides a method for distributing coke in a blast furnace, that is, a method for precisely distributing coke in a blast furnace, to solve the problem of poor u...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a blast furnace coke distribution method, that is, a blast furnace precise coke distribution method to solve the problem of poor utilization of gas in the middle ring zone of the blast furnace distribution

Images