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A fast and precise positioning method for automatic control of fan-shaped material distribution in bellless blast furnace

A clockless, precise positioning technology, applied in blast furnaces, blast furnace details, furnaces, etc., can solve problems such as unfavorable blast furnace normal production, poor control accuracy of the fan-shaped angle of the chute, and non-execution of fan-shaped distribution, etc., to shorten the waiting time for distribution, The effect of precise positioning and shortening of idling time

Active Publication Date: 2017-03-01
XINXING DUCTILE IRON PIPES CO LTD
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Problems solved by technology

[0003] At present, when bellless blast furnaces use fan-shaped material distribution, there are poor control accuracy of the fan-shaped angle of the chute and difficult positioning of the fan-shaped angle. It takes a long time to find the angle of the fan-shaped material distribution interval and the rotation of the rotating motor. The setting angle of β1 must be greater than the setting angle of β2. Because it is easy to set the wrong value when weighing and feeding, it will cause problems such as fan-shaped cloth not being implemented. The above defects are not conducive to the normal production of the blast furnace

Method used

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  • A fast and precise positioning method for automatic control of fan-shaped material distribution in bellless blast furnace

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Embodiment Construction

[0018] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

[0019] see figure 1 , a method for automatic control of fast and precise positioning of blast furnace fan-shaped cloth without material bell, the specific steps are as follows:

[0020] (1) Set the material distribution mode of the chute to allow fan-shaped material, set four material inclination angles, and set the first fan-shaped setting angle β1 and the second fan-shaped setting angle β2; the first fan-shaped setting angle β1 and the second fan-shaped setting angle β1 As long as the fixed angle β2 is in the range of 0-360° during setting, its value can be set arbitrarily, so as to avoid the wrong value set at the weighing and feeding station, so that the fan-shaped fabric does not execute;

[0021] (2) Judging the size of the first sector setting angle β1 and the second sector setting angle β2, if the first sector setting angle β1 is greater t...

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Abstract

The invention discloses a method for automatically controlling and rapidly, accurately and precisely locating fan-shaped distribution of a bell-less blast furnace. The method comprises the following specific steps of setting allowance of fan-shaped distribution, and setting a first fan-shaped set angle beta1 and a second fan-shaped set angle beta2; judging a fan-shaped set angle; collecting position data of a rotary chute in real time, carrying out angle conversion to obtain a circumferential position angle of the current rotary chute, and comparing with the first fan-shaped set angle beta1 and the second fan-shaped set angle beta2; and allowing blanking when the rotary chute is in the target position of the fan-shaped distribution. According to the invention, the angle location of fan-shaped distribution of a blast furnace chute is more precise and rapid; the idle running time and the distribution waiting time of a rotary motor are shortened; two numerical values of the fan-shaped set angle can be arranged freely; the wrong arrangement phenomenon of the numerical values does not exist; by means of precise distribution angle, a reasonable surface shape and ore-to-coke ratio distribution are formed in a blast furnace; and beneficial conditions are created for stability operation of the blast furnace.

Description

technical field [0001] The invention relates to a blast furnace material distribution automatic control technology, in particular to a bellless blast furnace fan-shaped material distribution automatic control method for fast, precise and precise positioning. Background technique [0002] The bellless blast furnace is a blast furnace equipped with a bellless charging device equipped with a rotary feeding trough (chute) as a raw material charging device on the top of the furnace. Typical distribution methods for bellless blast furnace top include circular distribution, spiral distribution, fixed-point distribution and fan-shaped distribution. The bellless blast furnace roof can distribute the blast furnace in the form of ring, spiral, fan and fixed point, etc., and can flexibly distribute the charge to any area and point of the throat section according to the change of furnace conditions in the blast furnace production, so that It satisfies the needs of adjusting the upper pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B7/20
CPCC21B5/006C21B5/008C21B7/20
Inventor 侯军哲
Owner XINXING DUCTILE IRON PIPES CO LTD
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