CN102010923A

CN102010923A - Uniform charging method of bell-less blast furnace

Info

Publication number: CN102010923A
Application number: CN201010607032XA
Authority: CN
Inventors: 李大斯; 葛建伟; 郭卫忠; 喻燕华
Original assignee: Baosteel Group Xinjiang Bayi Iron and Steel Co Ltd
Current assignee: Baosteel Group Xinjiang Bayi Iron and Steel Co Ltd
Priority date: 2010-12-27
Filing date: 2010-12-27
Publication date: 2011-04-13

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

Bell-free blast furnaces uniform distribution method

Technical field

The present invention relates to the blast furnace material distribution inflation method, particularly bell-free blast furnaces uniform distribution method of use in the production of a kind of Steel Plant.

Background technology

Bell-free blast furnaces roof material distributing mode is to realize by a angle and the angle size that changes airtight box connection swivel chute.Swivel chute can be finished two actions, and the one, around rotatablely moving of blast furnace medullary ray, we are called the angle, and the 2nd, in vertical plane, can change the inclination angle (we are called a angle) of chute, its transmission rig is in airtight box.

Current, bell-free blast furnaces chute (angle) is to be in rotating state all the time, and cloth is mainly realized monocycle cloth and polycyclic distributing by changing swivel chute a angle.Because chute (angle) is in rotating state all the time, by swivel chute is every jar of material cloth uneven in blast furnace, may can begin cloth in any point on the furnace throat cross section, cloth has very big randomness in the 360 ° of horizontal extents in furnace throat cross section, make that so same batch can cloth is inhomogeneous, forward and backward two batch can clothes are connected bad problem long-term existence, and can't satisfy manufacturing technique requirent.

Summary of the invention

The object of the present invention is to provide a kind of bell-free blast furnaces uniform distribution method, its processing method is simple, can make the bell-free blast furnaces batch can the stub bar of putting current this jar can with on one jar material tail be connected mutually, realize uniform distribution, satisfy the requirement of production technique.

The object of the present invention is achieved like this, a kind of bell-free blast furnaces uniform distribution method, this method comprises the following steps: 1, at first installs and fixes one near switch outside the signal transmitter edge, planetary reduction box angle of blast furnace airtight box, one of turbine center welding in the signal transmitter of planetary reduction box angle adds Long Irons, weld a buting iron in the outer end of iron, near switch and this buting iron interoperation; 2, increase a cycle second programsegment in the blast furnace material distribution sequence of control, the cycle this second is to trigger for 1 second once to carry out a second cycle count; 3, in process of production by second cycle count swivel chute is deposited into working time specifies in the counter continuously, detect again and carry out clear operation near switch signal outside the signal transmitter edge, angle; Carry out counting and clear operation again and again; 4, the fuel that detects in the northern batch can when level gage is put in the State of Blast Furnace fully, be that northern batch can spacing wave is when arriving, said Counter Value is read in the DB byte, promptly swivel chute is put in the specified data block by length value working time near switch; When 5, other blowing condition of northern next batch of material of batch can has possessed, also will carry out above-mentioned the 3rd step operation, the value in the DB byte of the value of current counter and last registration compares, if the two is unequal, repeats the two is compared; If when the two result relatively equates, then just can carry out the operation of northern batch can blowing.

The inventive method is to install one earlier near switch outside the signal transmitter edge, planetary reduction box angle of airtight box, utilize this to write down last one jar (as northern batch can) near switch and put the material tail time, the record airtight box was through the time near switch when promptly level gage detected the batch can spacing wave.After when other condition satisfies the material of preparing to put down in the northern batch can, must going up the material tail time of a northern batch can by the time, just can carry out the blowing operation, realize the uniform distribution operation of blast furnace thus.Processing method of the present invention is simple, can make the bell-free blast furnaces batch can the stub bar of putting current this jar can with on one jar material tail be connected mutually, realize uniform distribution, improve the standardization degree of blast furnace material distribution greatly, satisfy the requirement of production technique.

Description of drawings

The present invention is further detailed explanation below in conjunction with accompanying drawing.

Fig. 1 is a work flow synoptic diagram of the present invention.

Embodiment

A kind of bell-free blast furnaces uniform distribution method, as shown in Figure 1, with 380 bell-free blast furnaces clothes is example, this method comprises the following steps: 1, at first installs and fixes one near switch outside the signal transmitter edge, planetary reduction box angle of blast furnace airtight box, one of turbine center welding in the signal transmitter of planetary reduction box angle adds Long Irons, weld a buting iron in the outer end of iron, near switch and this buting iron interoperation.When buting iron rotates to when locating near the switch position,, send corresponding position signal near switch motion.2, increase a cycle second programsegment in the blast furnace material distribution sequence of control, the cycle this second is to trigger for 1 second once to carry out a second cycle count; 3, in process of production by second cycle count swivel chute is deposited into working time specifies in the counter continuously, detect again outside the signal transmitter edge, angle near the switch signal clear operation that resets; Carry out counting and clear operation again and again; 4, the fuel that detects in the northern batch can when level gage is put in the State of Blast Furnace fully, be that northern batch can spacing wave is when arriving, said Counter Value is read in the DB byte, promptly swivel chute is put in the specified data block by length value working time near switch; When 5, other blowing condition of northern next batch of material of batch can has possessed, also will carry out above-mentioned the 3rd step operation, the value in the DB byte of the value of current counter and last registration compares, if the two is unequal, repeats the two is compared; If when the two result relatively equates, then just can carry out the operation of northern batch can blowing.

The inventive method is to install one earlier near switch outside the signal transmitter edge, planetary reduction box angle of airtight box, utilize this to write down last one jar (as northern batch can) near switch and put the material tail time, the record airtight box was through the time near switch when promptly level gage detected the batch can spacing wave.After when other condition satisfies the material of preparing to put down in the northern batch can, must going up the material tail time of a northern batch can by the time, just can carry out the blowing operation, realize the uniform distribution operation of blast furnace thus.

Claims

1. bell-free blast furnaces uniform distribution method, it is characterized in that: this method comprises the following steps: 1, at first installs and fixes one near switch outside the signal transmitter edge, planetary reduction box angle of blast furnace airtight box, one of turbine center welding in the signal transmitter of planetary reduction box angle adds Long Irons, weld a buting iron in the outer end of iron, near switch and this buting iron interoperation; 2, increase a cycle second programsegment in the blast furnace material distribution sequence of control, the cycle this second is to trigger for 1 second once to carry out a second cycle count; 3, in process of production by second cycle count swivel chute is deposited into working time specifies in the counter continuously, detect again and carry out clear operation near switch signal outside the signal transmitter edge, angle; Carry out counting and clear operation again and again; 4, the fuel that detects in the northern batch can when level gage is put in the State of Blast Furnace fully, be that northern batch can spacing wave is when arriving, said Counter Value is read in the DB byte, promptly swivel chute is put in the specified data block by length value working time near switch; When 5, other blowing condition of northern next batch of material of batch can has possessed, also will carry out above-mentioned the 3rd step operation, the value in the DB byte of the value of current counter and last registration compares, if the two is unequal, repeats the two is compared; If when the two result relatively equates, then just can carry out the operation of northern batch can blowing.