Uniform charging method of bell-less blast furnace

Abstract

The invention discloses a uniform charging method of a bell-less blast furnace. The method comprises the following steps: 1) an iron block is welded on the beta angle signaling device of a planetary gear reducer, the iron block is matched with a fixed approach switch to act; 2) a second period program segment is added in the blast furnace charging control program; 3) the running time of a rotary chute is continuously stored in the specified counter through second period counting in the production process, then the signals of the approach switch outside the edge of the beta angle signaling device are detected to perform zero clearing operation; and the counting and zero clearing operations are executed in cycles; 4) when a level gage detects the arrival of the empty signals of a stocking tank, the value of the counter is read in the define byte (DB); and 5) when the other charging conditions of the stocking tank for the next batch of material are provided, the step 3) is executed, the current value of the counter is compared with the value in the last recorded DB, if the two values are not equal, the comparison is performed repeatedly; and if the two values are equal, the charging operation of the stocking tank is performed.

Description

technical field [0001] The invention relates to a blast furnace material distribution adjustment method used in steel plant production, in particular to a bellless blast furnace uniform material distribution method. Background technique [0002] The way of distributing material on the top of the bellless blast furnace is realized by changing the size of angle a and angle ? of the airtight box connecting the rotary chute. The rotary chute can complete two actions, one is the rotary motion around the center line of the blast furnace, which we call angle ?, and the other is that the inclination angle of the chute can be changed in the vertical plane (we call it angle a). Inside the secret box. [0003] At present, the bellless blast furnace chute (? angle) is always in a rotating state, and the material distribution is mainly achieved by changing the angle a of the rotating chute to realize single-ring and multi-ring distribution. Since the chute (? angle) is always in a rota...

AI Technical Summary

Problems solved by technology

Since the chute (? angle) is always in a rotating state, it is not uniform to distribute each can of material into the blast furnace through the rotating chute. It is possible to start the distribution at any point on the furnace throat section, within the 360° horizontal range of the furnace throat section The cloth has a lot of randomness, which makes the cloth of the same tank uneven, and the problems of poor connection of the front and rear two tanks have existed for a long time, which cannot meet the production process requirements

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