CN104342529A

CN104342529A - Blast furnace feeding/distribution control method and system

Info

Publication number: CN104342529A
Application number: CN201410581554.5A
Authority: CN
Inventors: 胡星; 陈李军; 徐向军; 黄健
Original assignee: Wuhan Iron and Steel Group Corp
Current assignee: Baoxin Software Wuhan Co Ltd
Priority date: 2014-10-27
Filing date: 2014-10-27
Publication date: 2015-02-11
Anticipated expiration: 2034-10-27
Also published as: CN104342529B

Abstract

The invention discloses a blast furnace feeding/distribution control method and system which comprises the following steps: reading a corresponding first feeding/distribution matrix according to the matrix number, after reading successfully, transmitting a request for editing the first feeding/distribution matrix data, and responding according to the request to edit feeding/distribution parameters of the first feeding/distribution matrix; and verifying the first feeding/distribution matrix according to preset verification conditions, after verifying successfully, transmitting and storing the first feeding/distribution matrix according to a first allowed transmission identification, and performing the feeding/distribution operation according to the first feeding/distribution matrix. The invention also discloses a blast furnace feeding/distribution control system. Thus, the method and system enhance the automation degree of the feeding/distribution process, and implement accurate control on the feeding/distribution process.

Description

Blast furnace feeding and distributing control method and system

Technical Field

The invention belongs to the technical field of metallurgy, and particularly relates to a blast furnace feeding and distributing control method and system.

Background

The iron-making production process is a process for carrying out a series of complex reduction reactions on furnace materials in a blast furnace, and comprises the following specific processes: after cold air from the air blower is heated by the hot blast stove, high-temperature hot air is formed and blown in from a blast-furnace tuyere and moves from bottom to top along with hot coal gas flow generated by burning coke; and the charging materials are loaded from the top of the furnace and move from top to bottom, the charging materials and the high-temperature hot air are contacted with each other for heat exchange and are reduced gradually, and finally the charging materials are reduced into pig iron at the lower part of the furnace, and simultaneously, furnace slag is formed. In the production process of the blast furnace, the control of feeding and distributing is the most critical link.

The blast furnace is generally charged with a charge belt, such as: ore, fuel, sinter, pellets, coke, flux, etc. are delivered to the top of the blast furnace. Blast furnace burden distribution generally refers to the regular distribution of charge material at different locations on the blast furnace burden surface by a rotating chute. In the traditional feeding and distributing mode, firstly, a user is required to edit feeding and distributing data on a Human Machine Interface (HMI), and then the data is manually checked and is sent to a control system to be executed after being confirmed to be correct; the whole process is complex in operation, feeding and distributing data cannot be accurately controlled, misoperation can be caused inevitably, the influence is brought to the forward running of the blast furnace, and the smelting effect and the tapping quantity can be influenced.

Disclosure of Invention

Aiming at the problems in the prior art, the embodiment of the invention provides a blast furnace feeding and distributing control method and system.

The invention provides a blast furnace feeding and distributing control method, which comprises the following steps:

reading corresponding first feeding distribution matrix data according to the matrix number, sending a request for editing the first feeding distribution matrix data after the reading is successful, and editing feeding distribution parameters of the first feeding distribution matrix according to a request response;

and checking the first feeding and distributing matrix according to preset checking conditions, after the checking is successful, sending and storing the first feeding and distributing matrix according to a first allowed sending identifier, and executing feeding and distributing operation according to the first feeding and distributing matrix.

In the above scheme, the corresponding feeding and distributing matrix data is read according to the matrix number, and when the reading fails, the method further includes:

and creating and editing a second feeding and distributing matrix, verifying the second feeding and distributing matrix according to preset verifying conditions, sending and storing the second feeding and distributing matrix according to a second allowable sending identifier after the second feeding and distributing matrix is successfully verified, and executing feeding and distributing operation according to the second feeding and distributing matrix.

In the foregoing scheme, the first feeding distribution matrix is verified according to a preset verification condition, and when the verification fails, the method further includes:

displaying first position information of verification failure, modifying the first feeding distribution matrix according to the first position information, and verifying the modified first feeding distribution matrix again.

In the foregoing scheme, the second feeding distribution matrix is verified according to a preset verification condition, and when the verification fails, the method further includes:

and displaying second position information failed in verification, modifying the second feeding and distributing matrix according to the second position information, and verifying the modified second feeding and distributing matrix again.

In the above scheme, the feeding and distributing parameters include: variety, weight, row mark, feeding and distributing time and distributing parts at each corner.

The invention also provides a blast furnace feeding and distributing control system, which comprises:

the first control unit is used for reading corresponding first feeding and distributing matrix data according to the matrix number, sending a request for editing the first feeding and distributing matrix data after the reading is successful, and editing feeding and distributing parameters of the first feeding and distributing matrix according to a request response; the first feeding distribution matrix is verified according to preset verification conditions, and after verification is successful, the first feeding distribution matrix is sent to a second control unit and a third control unit according to a first transmission permission identifier and stored;

the second control unit is used for controlling the weighing unit to execute weighing operation according to the upper first feeding and distributing matrix and controlling the transmission unit to execute feeding operation;

and the third control unit is used for controlling the rotary material distribution unit to execute material distribution operation according to the upper first material loading and material distribution matrix.

In the foregoing solution, the first control unit reads corresponding first feeding and distributing matrix data according to the matrix number, and after the reading fails, the first control unit is further configured to:

and creating a second feeding distribution matrix, verifying the second feeding distribution matrix according to preset verification conditions, and sending and storing the second feeding distribution matrix according to a second allowable sending identifier after verification is successful.

In the above scheme, when the second feeding distribution matrix is sent and stored according to the second transmission permission identifier after the verification is successful,

the second control unit is further configured to: controlling the weighing unit to perform weighing operation according to the upper second feeding distribution matrix, and controlling the transmission unit to perform feeding operation;

the third control unit is further configured to: and controlling a rotating chute to execute material distribution operation according to the upper second material loading and distributing matrix.

In the above scheme, the first control unit verifies the second feeding distribution matrix according to a preset verification condition, and after the verification fails, the first control unit is further configured to:

In the above scheme, the second feeding distribution matrix is verified according to a preset verification condition, and when the verification fails, the first control unit is further configured to:

The invention provides a blast furnace feeding and distributing control method and a system, wherein the method comprises the following steps: reading corresponding first feeding distribution matrix data according to the matrix number, sending a request for editing the first feeding distribution matrix data after the reading is determined to be successful, and editing feeding distribution parameters of the first feeding distribution matrix according to a request response; and checking the first feeding and distributing matrix according to preset checking conditions, sending and storing the first feeding and distributing matrix according to the sending permission identification after the checking is determined to be successful, and executing feeding and distributing operation according to the first feeding and distributing matrix, so that the automation of the feeding and distributing process is improved, and the accurate control of the feeding and distributing process is realized. The problems that in the prior art, a blast furnace feeding and distributing system is low in automation degree, low in running speed and incapable of accurately controlling feeding and distributing are solved.

Drawings

FIG. 1 is a schematic flow chart of a method for controlling the charging and the distribution of a blast furnace according to an embodiment of the present invention;

fig. 2 is a schematic view of the overall structure of a blast furnace charging and distributing control system according to an embodiment of the present invention.

Detailed Description

In order to simplify the feeding and distributing process and accurately control the feeding and distributing data in the production process of the blast furnace, the invention provides a feeding and distributing control method and a system for the blast furnace, wherein the method comprises the following steps: reading corresponding first feeding distribution matrix data according to the matrix number, sending a request for editing the first feeding distribution matrix data after the reading is determined to be successful, and editing feeding distribution parameters of the first feeding distribution matrix according to a request response; and verifying the first feeding and distributing matrix according to preset verifying conditions, after the verification is determined to be successful, sending and storing the first feeding and distributing matrix according to the sending permission identification, and executing feeding and distributing operation according to the first feeding and distributing matrix.

The technical solution of the present invention is further described in detail by the accompanying drawings and the specific embodiments.

Example one

The embodiment provides a method for controlling feeding and distributing of a blast furnace, as shown in fig. 1, the method mainly includes the following steps:

step 110, reading corresponding first feeding and distributing matrix data according to the matrix number;

in this step, reading corresponding first feeding and distributing matrix data according to the input matrix number, where the matrix number may include: no. 1-50, namely 50 loading and distributing matrixes can be stored at the same time.

The feeding and distributing matrix is composed of a two-dimensional table, the two-dimensional table can execute 32 steps at most and is stored in a file form. Taking the first feeding and distributing matrix as an example, for example, matrix number 1 corresponds to the first feeding and distributing matrix, and a header of a two-dimensional table of the first feeding and distributing matrix is shown in table 1.

TABLE 1

As shown in table 1, the variety of the feeding cloth may include: coke, ore, pyrolusite, south american ore, australian ore, regional ore, pellet 1, and pellet 2; the maximum batch size value of the coke may be set to 26 tons, the maximum batch size value of the ore may be set to 70 tons, the maximum batch size of the nut coke may be set to 1.8 tons, the maximum compensation amount of the coke batch may be 3.5 tons, and the maximum compensation amount of the ore batch may be 1.15 tons.

Step 111, judging whether the reading is successful, and executing step 112 after the reading is successful; when the reading fails, step 119 is performed.

In this step, if all the data in the first feeding and distributing matrix are read, the reading is successful; and if the data in the first loading material distribution matrix are not completely read, the reading failure is represented.

Step 112, sending a request for editing the data of the first feeding and distributing matrix, and editing the feeding and distributing parameters of the first feeding and distributing matrix according to the request response.

In this step, when reading the first feeding distribution matrix data successfully, a request for editing the first feeding distribution matrix data is sent, and when the request is allowed, a request response for allowing editing is received, and feeding distribution parameters of the first feeding distribution matrix are edited according to the request response.

In addition, if the feeding and distributing matrix is successfully utilized for successful distribution before the distribution, the feeding and distributing matrix can be automatically stored, and the feeding and distributing matrix can be directly read if a corresponding matrix number is input during the next reading.

For example, before the material is distributed, the material loading and distributing matrix with the matrix number of 1-10 is used for successful material distribution, and when the next reading is carried out, if the corresponding matrix number of 1-10 is input, the material loading and distributing matrix number of 1-10 can be directly read.

Here, the editing of the feeding distribution parameters of the first feeding distribution matrix according to the request response includes: and modifying and storing the variety, the weight, the row mark, the material distribution time and the material distribution parts of each corner of the furnace burden according to actual needs.

And 113, verifying the first feeding and distributing matrix according to preset verification conditions.

In this step, when the first feeding distribution matrix is edited, the first feeding distribution matrix is checked line by line according to preset checking conditions. Wherein the verification conditions are shown in table 2.

TABLE 2

Step 114, judging whether the verification is successful, and if the verification is successful, executing step 115; if the verification is not successful, step 116 is performed.

In this step, when the first feeding and distributing matrix can simultaneously satisfy the conditions 1 to 18 in table 2, the verification can be successful; when the verification is successful, the first feeding and distributing matrix is stored so that the first feeding and distributing matrix can be reused subsequently;

and when the first feeding and distributing matrix cannot simultaneously meet the conditions 1-18, the verification fails.

Step 115, judging whether the first sending identifier allows sending the first feeding distribution matrix, and if so, executing step 117; if not, go to step 118;

in this step, before the first feeding and distributing matrix is sent, the state of the first sending identifier is checked; wherein the state of the first transmission identifier comprises: a first allowed transmission flag and a first disallowed transmission flag.

And step 116, displaying first position information of verification failure, modifying the first feeding distribution matrix according to the first position information, and verifying the modified first feeding distribution matrix again until verification is successful.

And step 117, sending and storing the first feeding and distributing matrix according to the first sending permission identifier, and executing feeding and distributing operation according to the first feeding and distributing matrix.

In this step, when the state of the sending identifier is the first allowed sending identifier, the first feeding distribution matrix is sent and stored according to the first allowed sending identifier.

Before receiving the first feeding and distributing matrix, after waiting for the previous feeding and distributing matrix to be processed, receiving the first feeding and distributing matrix, gradually executing the content in the first feeding and distributing matrix, and completing weighing, feeding and distributing operations for the blast furnace in sequence.

Specifically, when the weighing operation is performed on the blast furnace, the weighing operation may be performed according to the contents of table 3.

TABLE 3

Step number	Coke	Sintering	Mine species 1	Mine species 2	Mine species 3	Mine species 4	Mine species 5	Marking
									1	5.8				B
2	5.8
									3		18
4		18						M
									5	5.8
6	5.8
									7			22	15	M
8	5.8
									9	5.8
10			18	9	9			E

The main table content of the two-dimensional table can be shown in table 3, the rows of the two-dimensional table represent step numbers, and the step numbers indicate the feeding sequence of the batches; the columns of the two-dimensional table represent feeding and distributing parameters, which include: variety, weight, row mark, material distribution time, number of cloth parts at each corner position and the like. Wherein the line marker may include: B. m, E, respectively; the B indicates a charge start flag, the M indicates a half-batch flag, and the E indicates an end-of-charge flag.

Here, as shown in table 3: the method comprises the following steps of firstly weighing and loading 5.8 tons of coke, secondly weighing and loading 5.8 tons of coke, thirdly weighing and loading 18 tons of sintering, fourthly weighing and loading 18 tons of sintering, fifthly weighing and loading 5.8 tons of coke, sixthly weighing and loading 5.8 tons of coke, and seventhly weighing and loading 22 tons of pellets 1 and 15 tons of pellets 2; and eighthly, weighing and charging 5.8 tons of coke, ninth weighing and charging 5.8 tons of coke, tenth weighing and charging 18 tons of south America ore, 9 tons of Australia ore and 9 tons of regional ore, and then finishing charging. Wherein, the semi-batch mark means that different furnace materials are loaded between two adjacent step numbers.

When the blast furnace is charged, charging operation can be performed according to the contents of tables 4 and 5.

TABLE 4

As shown in table 4, when distributing furnace burden, the furnace burden is required to be distributed according to the angular positions, which are distribution angles, and the angular positions include at least 11. The material distribution time is the sum of the material distribution parts multiplied by 7.5 s. Taking the first example, the material distribution time at each corner is 7.5s, and 16 parts of material are required from corner 1 to corner 11, so that the material distribution time is 16 × 7.5s, namely 120 s. The other rows of data work the same way.

Here, table 4 corresponds to table 3, and in the first row, the charge type in table 3 is coke, and the angular position 1 in table 4 corresponds to 2, that is, 2 parts of coke are placed at the angular position 1. Similarly, 2 parts, 3 parts and 2 parts of coke are respectively distributed at the angular positions 2, 5, 6, 9, 10 and 11.

In addition, when the burden is distributed, the burden is distributed at an angle position according to the height detected by the material ruler in the table 5.

TABLE 5

As shown in Table 5, the height of the material ruler comprises three ranges, wherein the first range is 0-2 m, the second range is 2-4 m, and the third range is 4-6 m.

Taking the first row of table 5 as an example, when the height of the material ruler is in the range of 0-2 m and the variety of the furnace burden is coke, the vertical inclination angles of the material distribution at the angle positions 1-11 are respectively 51 °, 48 °, 46 °, 43 °, 41 °, 37 °, 34 °, 29 °, 25 °, 20 ° and 11 °. The other row data is the same as this.

And step 118, re-triggering and sending and saving the first feeding and distributing matrix according to the reset identifier.

In this step, when the state of the first sending identifier is the first disallowed sending identifier, waiting for the identifier of the sending state to be reset, and re-triggering and sending the first feeding and distributing matrix according to the reset identifier. And when the transmission is successful, the function of storing the first feeding and distributing matrix can be automatically triggered.

119, creating and editing a second feeding and distributing matrix, verifying the second feeding and distributing matrix according to preset verifying conditions, sending and storing the second feeding and distributing matrix according to a second allowable sending identifier after the second feeding and distributing matrix is successfully verified, and executing feeding and distributing operation according to the second feeding and distributing matrix;

in this step, when reading of the first feeding distribution matrix fails, the second feeding distribution matrix is created. The second feeding and distributing matrix is different from the first feeding and distributing matrix.

Specifically, if the material loading and distributing matrix with the matrix number of 1-10 is used for successful material distribution before the material distribution, a second material loading and distributing matrix is created when the corresponding matrix number of 11 is input or the material loading and distributing matrix does not belong to the number of 1-10 during the next reading.

And when the second feeding distribution matrix is successfully established, sending a request for requesting to edit the data of the second feeding distribution matrix, and when the request is allowed, receiving a request response for allowing editing, and editing the feeding distribution parameters of the second feeding distribution matrix according to the request response.

Here, the editing of the feeding distribution parameters of the second feeding distribution matrix according to the request response includes: and modifying and storing the variety, the weight, the row mark, the material distribution time and the material distribution parts of each corner of the furnace burden according to actual needs.

And when the second feeding distribution matrix is edited, carrying out row-by-row check on the second feeding distribution matrix according to preset check conditions. The checking conditions are shown in table 2, and the checking process is the same as the first material loading and distribution matrix checking process.

And when the verification is unsuccessful, displaying second position information of the verification failure, modifying the second feeding and distributing matrix according to the second position information, and verifying the modified second feeding and distributing matrix again until the verification is successful.

Specifically, when the second feeding and distributing matrix can simultaneously satisfy the conditions 1 to 18 in table 4, the verification can be successful; and when the second feeding and distributing matrix cannot simultaneously meet the conditions 1-18, the verification fails.

When the verification is successful, the second feeding and distributing matrix is stored so that the second feeding and distributing matrix can be reused subsequently; and checking the status of the second transmission identifier; wherein the state of the second transmission identifier comprises: a second allowed transmission flag and a second disallowed transmission flag.

When the state of the sending identification is a second sending permission identification, sending and storing the second feeding distribution matrix according to the second sending permission identification;

before receiving the first feeding and distributing matrix, after waiting for the previous feeding and distributing matrix to be processed, receiving the second feeding and distributing matrix, gradually executing the content in the second feeding and distributing matrix, and completing weighing, feeding and distributing operations for the blast furnace in sequence.

Specifically, when the blast furnace is weighed, the weighing operation is executed according to the contents put in the table 4; and when the blast furnace is distributed, the distribution operation is executed according to the content in the table 5.

In addition, when the state of the sending identifier is a second disallowed sending identifier, the identifier of the sending state is waited to be reset, and the sending is triggered again according to the reset identifier and the second feeding and distributing matrix is stored. And when the transmission is successful, the function of storing the second feeding and distributing matrix can be automatically triggered.

The method for controlling the feeding and distributing of the blast furnace improves the automation of the feeding and distributing process and realizes the accurate control of the feeding and distributing process.

Example two

Corresponding to the first embodiment, the present invention further provides a blast furnace burden distribution control system, as shown in fig. 2, the system includes: a first control unit 21, a second control unit 22, a third control unit 23, a weighing unit 24, a transmission unit 25, a receiving unit 26, a blanking unit 27 and a rotary distributing unit 28; wherein,

the first control unit 21 is configured to: reading corresponding first feeding distribution matrix data according to the matrix number, sending a request for editing the first feeding distribution matrix data after the reading is successful, and editing feeding distribution parameters of the first feeding distribution matrix according to a request response; and checking the first feeding distribution matrix according to a preset checking condition, and after the checking is successful, sending the first feeding distribution matrix to a second control unit 22 and a third control unit 23 according to a first transmission permission identifier, and storing the first feeding distribution matrix.

The second control unit 22 is configured to: controlling the weighing unit 24 to perform weighing operation according to the upper first feeding and distributing matrix, and controlling the transmission unit 25 to perform feeding operation; the charge material is transferred to the receiving unit 26 and is transferred to the rotary distributing unit 28 through the blanking unit 27.

The third control unit 23 is configured to: and controlling the rotary material distribution unit 28 to perform material distribution operation according to the upper first material loading and distribution matrix.

Specifically, the first control unit 21 reads corresponding first feeding and distributing matrix data according to an input matrix number, where the matrix number may include: no. 1-50, namely the system can store 50 feeding and distributing matrixes simultaneously.

The first feeding and distributing matrix is composed of a two-dimensional table, the two-dimensional table can execute 32 steps at most and is stored in a file form, for example, the matrix number 1 corresponds to the first feeding and distributing matrix, and the header of the two-dimensional table of the first feeding and distributing matrix is shown in table 1.

TABLE 1

When the first control unit 21 reads all the data in the first feeding and distributing matrix, that is, represents that the reading is successful, the first control unit sends a request for requesting editing of the data of the first feeding and distributing matrix, and when the request is allowed, receives a request response for allowing editing, and edits the feeding and distributing parameters of the first feeding and distributing matrix according to the request response.

In addition, if the first control unit 21 has successfully utilized the feeding and distributing matrix to perform successful distribution before the current distribution, the feeding and distributing matrix is automatically stored, and when reading the next time, if a user inputs a corresponding matrix number, the first control unit 21 may directly read the feeding and distributing matrix.

For example, before the material is distributed, the first control unit 21 performs successful material distribution by using the material loading and distributing matrix with the matrix number of 1-10, and when reading next time, if the corresponding matrix number of 1-10 is input, the first control unit 21 can directly read the material loading and distributing matrix number of 1-10.

Here, the editing of the feeding distribution parameters of the first feeding distribution matrix according to the request response includes: the first control unit 21 modifies and stores the variety, weight, row mark, distribution time and distribution parts of each corner of the furnace burden according to actual needs.

When the first feeding distribution matrix is edited by the first control unit 21, the first feeding distribution matrix is checked line by line according to a preset checking condition. Wherein the verification conditions are shown in table 2.

TABLE 2

When the first feeding and distributing matrix can simultaneously meet the conditions 1-18 in the table 2, the verification can be successful; when the verification is successful, the first feeding and distributing matrix is stored so that the first feeding and distributing matrix can be reused subsequently;

When the first control unit 21 successfully verifies the first feeding distribution matrix, checking the states of the first sending identifiers of the second control unit 22 and the third control unit 23; wherein the state of the first transmission identifier comprises: a first allowed transmission flag and a first disallowed transmission flag.

When the state of the sending identifier is the first transmission permission identifier, the first control unit 21 sends the first feeding cloth matrix to the second control unit 22 and the third control unit 23 according to the first transmission permission identifier. When the transmission is successful, the save function of the first control unit 21 is automatically triggered.

The second control unit 22 and the third control unit 23 receive the first feeding and distributing matrix after the previous feeding and distributing matrix is processed, gradually execute the content in the first feeding and distributing matrix, and sequentially complete weighing, feeding and distributing operations on the blast furnace.

In particular, the second control unit 22 may perform a weighing operation according to the contents of table 3.

TABLE 3

Here, the main table content of the two-dimensional table may be as shown in table 3, the rows of the two-dimensional table represent step numbers, and the step numbers indicate the order of batch release; the columns of the two-dimensional table represent feeding and distributing parameters, which include: variety, weight, row mark, material distribution time, number of cloth parts at each corner position and the like. Wherein the line marker may include: B. m, E, respectively; the B indicates a charge start flag, the M indicates a half-batch flag, and the E indicates an end-of-charge flag.

The second control unit 22 controls the weighing unit 24 to perform a weighing operation and controls the transmission unit 25 to perform a feeding operation according to the contents shown in table 3; here, the second control unit 22 controls the weighing unit 24 to weigh 5.8 tons of coke in a first step, and controls the transfer unit 25 to transfer the 5.8 tons of coke to the receiving unit 26 to perform a loading operation.

The second control unit 22 controls the weighing unit 24 to weigh 5.8 tons of coke for the second step, and controls the transferring unit 25 to transfer the 5.8 tons of coke to the receiving unit 26 to perform a loading operation.

The second control unit 22 controls the weighing unit 24 to weigh 18 tons of sintering in the third step, and controls the transmission unit 25 to transmit the 18 tons of sintering to the receiving unit 26, so as to perform the loading operation.

The second control unit 22 controls the weighing unit 24 to weigh 18 tons of sintering in the fourth step, and controls the transmission unit 25 to transmit the 18 tons of sintering to the receiving unit 26, so as to perform a loading operation.

The second control unit 22 controls the weighing unit 24 to weigh 5.8 tons of coke in the fifth step, and controls the conveying unit 25 to convey the 5.8 tons of coke to the receiving unit 26 to perform a loading operation.

The second control unit 22 controls the weighing unit 24 to weigh 5.8 tons of coke in a sixth step, and controls the conveying unit 25 to convey the 5.8 tons of coke to the receiving unit 26, so as to perform a loading operation.

The second control unit 22 controls the weighing unit 24 to weigh 22 tons of pellets 1 and 15 tons of pellets 2 in a seventh step; the control transfer unit 25 transfers the 22 tons of pellets 1 and 15 tons of pellets 2 to the receiving unit 26, and the loading operation is performed.

The second control unit 22 controls the weighing unit 24 to weigh 5.8 tons of coke in an eighth step, and controls the transferring unit 25 to transfer the 5.8 tons of coke to the receiving unit 26 to perform a loading operation.

The second control unit 22 controls the weighing unit 24 to weigh 5.8 tons of coke in the ninth step, and controls the conveying unit 25 to convey the 5.8 tons of coke to the receiving unit 26 to perform a loading operation.

The second control unit 22 controls the weighing unit 24 to weigh 18 tons of south america ore, 9 tons of australian mine and 9 tons of regional ore in a tenth step, and controls the transmission unit 25 to transmit the 8 tons of south america ore, 9 tons of australian mine and 9 tons of regional ore to the receiving unit 26 to execute a loading operation. Wherein, the semi-batch mark means that different furnace materials are loaded between two adjacent step numbers.

When distributing the blast furnace, the third control unit 23 may perform a distributing operation according to the contents of tables 4 and 5.

TABLE 4

As shown in table 4, when distributing the burden, the third control unit 23 needs to distribute the burden according to an angular position, where the angular position is a vertical inclination angle of the rotary distributing unit 28, and the angular position includes at least 11 angular positions. The material distribution time is the sum of the material distribution parts multiplied by 7.5 s. Taking the first example, the material distribution time at each corner is 7.5s, and 16 parts of material are required from corner 1 to corner 11, so that the material distribution time is 16 × 7.5s, namely 120 s. The other rows of data work the same way.

Here, table 4 corresponds to table 3, and taking the first row as an example, the material seed in table 3 is coke, and the angular position 1 in table 4 corresponds to 2, that is, the third control unit 23 controls the rotary distribution unit 28 to distribute 2 parts of coke at the angular position 1. Similarly, the third control unit 23 controls the rotary distribution unit 28 to distribute 2 parts, 3 parts and 2 parts of coke at the angular positions 2, 5, 6, 9, 10 and 11 respectively.

In addition, when the burden is distributed, the third control unit 23 controls the vertical inclination angle of the rotary distributing unit 28 to distribute the burden according to the height detected by the material ruler in table 5.

TABLE 5

Taking the first row of table 5 as an example, when the height of the material ruler is in the range of 0-2 m and the variety of the furnace burden is coke, the third control unit 23 controls the vertical tilt angles of the rotary material distribution unit 28 at the angular positions 1-11 for material distribution to be 51 °, 48 °, 46 °, 43 °, 41 °, 37 °, 34 °, 29 °, 25 °, 20 °, and 11 °, respectively. The other row data is the same as this.

Here, when the state of the first transmission identifier is the first non-transmission-allowed identifier, the first control unit 21 waits for the identifier of the transmission state to be reset, and re-triggers transmission of the first feeding distribution matrix according to the reset identifier. And when the transmission is successful, the function of storing the second feeding and distributing matrix can be automatically triggered.

In addition, when the first control unit 21 does not read out all the data in the first feeding cloth matrix, that is, the reading fails, the first control unit 21 is further configured to: and creating and editing a second feeding distribution matrix, verifying the second feeding distribution matrix according to preset verification conditions, and sending and storing the second feeding distribution matrix according to a second allowable sending identifier after verification is successful.

The second control unit 22 is further configured to: controlling the weighing unit to perform weighing operation according to the upper second feeding distribution matrix, and controlling the transmission unit to perform feeding operation;

the third control unit 23 is further configured to: and controlling a rotary material distribution unit to execute material distribution operation according to the upper second material loading and material distribution matrix.

Specifically, if the first control unit 21 performs successful material distribution by using the material loading and material distribution matrix with the matrix number of 1-10 before the material distribution, the first control unit 21 creates a second material loading and material distribution matrix when the next reading is performed and if the corresponding matrix number of 11 is input by the user or the corresponding material loading and material distribution matrix does not belong to the number of 1-10.

When the second feeding and distributing matrix is successfully created, the first control unit 21 sends a request for requesting to edit data of the second feeding and distributing matrix, receives a request response for allowing editing when the request is allowed, and edits feeding and distributing parameters of the second feeding and distributing matrix according to the request response.

When the first control unit 21 edits the second feeding distribution matrix, the second feeding distribution matrix is checked line by line according to a preset checking condition. The checking conditions are shown in table 4, and the checking process is the same as the first material loading and distribution matrix checking process.

Here, when the verification is unsuccessful, second position information of the verification failure is displayed, and the first control unit 21 modifies the second feeding and distributing matrix according to the second position information and re-verifies the modified second feeding and distributing matrix until the verification is successful.

Specifically, when the first control unit 21 determines that the second feeding and distributing matrix can simultaneously satisfy the conditions 1 to 18 in table 2, the verification is successful; and when the second feeding and distributing matrix cannot simultaneously meet the conditions 1-18, the verification fails.

When the verification is successful, the first control unit 21 saves the second feeding and distributing matrix so that the second feeding and distributing matrix can be reused subsequently; and checking the status of the second transmission identifier; wherein the state of the second transmission identifier comprises: a second allowed transmission flag and a second disallowed transmission flag.

When the state of the sending identifier is a second allowed sending identifier, the first control unit 21 sends and saves the second feeding distribution matrix to the second control unit 22 and the third control unit 23 according to the second allowed sending identifier;

the second control unit 22 and the third control unit 23 receive the second feeding and distributing matrix after the previous feeding and distributing matrix is processed, execute the content in the second feeding and distributing matrix according to the preset sequence control, and sequentially complete the weighing, feeding and distributing operations on the blast furnace.

Specifically, when the blast furnace is weighed, the second control unit 22 performs the weighing operation according to the content in table 4, and the specific execution mode is completely the same as the execution mode of the first feeding and distributing matrix; when distributing the blast furnace, the third control unit 23 executes the distributing operation according to the content in table 5, and the specific execution manner is completely the same as the execution manner of executing the first feeding and distributing matrix.

In addition, when the status of the sending identifier is a second disallowed sending identifier, the second control unit 22 waits for the identifier of the sending status to be reset, and triggers sending and stores the second feeding distribution matrix again according to the reset identifier. When the transmission is successful, the second control unit 22 may automatically trigger a function of saving the second feeding and distributing matrix.

In practical application, the first control unit 21 may be implemented by an industrial personal computer; the second control unit 22 and the third control unit 23 can be implemented by a Central Processing Unit (CPU), a Digital Signal Processor (DSP), and a Programmable logic Array (FPGA); the weighing unit 24 may be implemented by a weighing hopper; the transmission unit 25 may be implemented by a belt conveyor; the receiving unit 26 can be realized by a receiving hopper, and the blanking unit 27 can be realized by a blanking hopper; the rotary distribution unit 28 may be realized by a rotary chute.

The blast furnace feeding and distributing control system provided by the embodiment has the advantages of high automation degree, high running speed and strong real-time performance, and can avoid the problem of inaccurate feeding and distributing caused by manual misoperation.

EXAMPLE III

When a user uses the blast furnace feeding and distributing control method and the system provided by the invention to feed and distribute the material to the blast furnace, the precise control of feeding and distributing can be conveniently realized.

When a user needs to feed and distribute materials to the blast furnace, inputting a matrix number through a human-computer interface, reading corresponding first feeding and distributing matrix data by the industrial personal computer according to the matrix number, sending a request for editing the first feeding and distributing matrix data to the user after the reading is successful, replying a request response to the industrial personal computer by the user through the human-computer interface, and editing feeding and distributing parameters of the first feeding and distributing matrix by the industrial personal computer according to the request response; and checking the first feeding distribution matrix according to preset checking conditions, and after the checking is successful, sending the first feeding distribution matrix to a first PLC and a second PLC according to a first transmitting permission identifier, and storing the first feeding distribution matrix.

The first PLC controls the weighing hopper to perform weighing operation according to the upper first feeding and distributing matrix and controls the belt conveyor to perform feeding operation; and conveying the furnace burden to the receiving hopper, and conveying the furnace burden to the rotary chute through the discharging hopper.

And the second PLC controls the rotary chute to execute distribution operation according to the upper first feeding and distribution matrix.

Specifically, the industrial personal computer reads corresponding first feeding and distributing matrix data according to a matrix number input by a user, and the matrix number may include: no. 1-50, namely the system can store 50 feeding and distributing matrixes simultaneously.

TABLE 1

When the industrial personal computer reads all the data in the first feeding and distributing matrix, namely represents that the data are successfully read, a request for editing the data of the first feeding and distributing matrix is sent to a user, when the request is allowed, a request response for allowing editing is received, and feeding and distributing parameters of the first feeding and distributing matrix are edited according to the request response.

In addition, if the industrial personal computer successfully utilizes the feeding and distributing matrix to successfully distribute materials before the material distribution, the feeding and distributing matrix can be automatically stored, and the feeding and distributing matrix can be directly read by the industrial personal computer if a corresponding matrix number is input by a user during the next reading.

For example, before the material is distributed, the industrial personal computer can utilize the material loading and distributing matrix with the matrix number of 1-10 to successfully distribute the material, and when the industrial personal computer reads the next time, if the corresponding matrix number of 1-10 is input, the industrial personal computer can directly read the material loading and distributing matrix number of 1-10.

Here, the editing of the feeding distribution parameters of the first feeding distribution matrix according to the request response includes: and the industrial personal computer modifies and stores the variety, the weight, the row mark, the material distribution time and the material distribution parts of each corner of the furnace burden according to actual requirements.

And when the industrial personal computer edits the first feeding and distributing matrix, carrying out row-by-row check on the first feeding and distributing matrix according to a preset check condition. Wherein the verification conditions are shown in table 2.

TABLE 2

When the industrial personal computer successfully verifies the first feeding and distributing matrix, checking the states of first sending identifications of the first PLC and the second PLC; wherein the state of the first transmission identifier comprises: a first allowed transmission flag and a first disallowed transmission flag.

And when the state of the sending identification is a first permission sending identification, the industrial personal computer sends the first feeding and distributing matrix to the first PLC and the second PLC according to the first permission sending identification. And when the transmission is successful, automatically triggering the storage function of the industrial personal computer.

And the first PLC and the second PLC receive the first feeding and distributing matrix after the previous feeding and distributing matrix is processed, execute the content in the first feeding and distributing matrix according to preset sequence control, and finish weighing, feeding and distributing operations to the blast furnace in sequence.

Specifically, the first PLC may perform a weighing operation according to the contents of table 3.

TABLE 3

Step number

Coke

Sintering

Mine species 1

Mine species 2

Mine species 3

Mine species 4

Mine species 5

Marking

1

5.8

B

2	5.8
							3		18
4		18				M
							5	5.8
6	5.8
							7			22	15	M
8	5.8
							9	5.8
10			18	9	9	E

The first PLC controls the weighing hopper to perform weighing operation according to the content shown in the table 3, and controls the belt conveyor to perform feeding operation; here, the first PLC controls the weighing hopper to weigh 5.8 tons of coke in a first step, and controls the belt conveyor to convey the 5.8 tons of coke to the receiving hopper, so as to perform a loading operation.

And the first PLC controls the weighing hopper to weigh 5.8 tons of coke in the second step, and controls a belt conveyor to convey the 5.8 tons of coke to the receiving hopper to execute feeding operation.

And the first PLC controls the weighing hopper to weigh 18 tons of sintering in the third step, and controls a belt conveyor to convey the 18 tons of sintering to the receiving hopper to execute feeding operation.

And the first PLC controls the weighing hopper to load and weigh 18 tons of sintering in the fourth step, and controls a belt conveyor to convey the 18 tons of sintering to the receiving hopper to execute feeding operation.

And the first PLC controls the weighing hopper to weigh 5.8 tons of coke in the fifth step, and controls a belt conveyor to convey the 5.8 tons of coke to the receiving hopper to execute feeding operation.

And the first PLC controls the weighing hopper to weigh 5.8 tons of coke in the sixth step, and controls a belt conveyor to convey the 5.8 tons of coke to the receiving hopper to execute feeding operation.

The first PLC controls the weighing hopper to weigh 22 tons of pellets 1 and 15 tons of pellets 2 in a seventh step; and controlling a belt conveyor to transmit the 22 tons of pellets 1 and the 15 tons of pellets 2 to the receiving hopper, and executing feeding operation.

And the first PLC controls the weighing hopper to weigh 5.8 tons of coke in the eighth step, and controls a belt conveyor to convey the 5.8 tons of coke to the receiving hopper to execute feeding operation.

And the first PLC controls the weighing hopper to weigh 5.8 tons of coke in the ninth step, and controls a belt conveyor to convey the 5.8 tons of coke to the receiving hopper to execute feeding operation.

And the first PLC controls the weighing hopper to weigh 18 tons of south American mine, 9 tons of Australian mine and 9 tons of regional mine in a tenth step, and controls the belt conveyor to convey the 8 tons of south American mine, 9 tons of Australian mine and 9 tons of regional mine to the receiving hopper to execute feeding operation. Wherein, the semi-batch mark means that different furnace materials are loaded between two adjacent step numbers.

When the blast furnace is distributed, the second PLC may perform the distribution operation according to the contents of tables 4 and 5.

TABLE 4

As shown in table 4, when distributing furnace burden, the second PLC needs to distribute furnace burden according to the angular position, which is the distribution angle of the rotary chute, and the angular positions include at least 11. The material distribution time is the sum of the material distribution parts multiplied by 7.5 s. Taking the first example, the material distribution time at each corner is 7.5s, and 16 parts of material are required from corner 1 to corner 11, so that the material distribution time is 16 × 7.5s, namely 120 s. The other rows of data work the same way.

Here, table 4 corresponds to table 3, and in the first row, the charge variety in table 3 is coke, and the angular position 1 in table 4 corresponds to 2, that is, the second PLC controls the rotary chute to distribute 2 parts of coke at the angular position 1. Similarly, the second PLC controls the rotating chute to distribute 2 parts, 3 parts and 2 parts of coke at an angular position 2, an angular position 5, an angular position 6, an angular position 9, an angular position 10 and an angular position 11 respectively.

In addition, when distributing the furnace burden, the second PLC controls the vertical inclination angle of the rotary chute to distribute the furnace burden according to the height detected by the material ruler in the table 5.

TABLE 5

Taking the first row of table 5 as an example, when the height of the material ruler is in the range of 0-2 m and the variety of the charging material is coke, the second PLC controls the vertical inclination angles of the material distribution of the rotating chute at the angular positions 1-11 to be 51 °, 48 °, 46 °, 43 °, 41 °, 37 °, 34 °, 29 °, 25 °, 20 ° and 11 °, respectively. The other row data is the same as this.

Here, when the state of the first sending identifier is a first disallowed sending identifier, the industrial personal computer waits for the identifier of the sending state to reset, and triggers and sends the first feeding and distributing matrix again according to the reset identifier. And when the transmission is successful, the function of storing the first feeding and distributing matrix can be automatically triggered.

In addition, when the industrial personal computer does not read out all the data in the first feeding and distributing matrix, that is, the data are read out unsuccessfully, the industrial personal computer is further configured to: and creating and editing a second feeding distribution matrix, verifying the second feeding distribution matrix according to preset verification conditions, and sending and storing the second feeding distribution matrix according to a second allowable sending identifier after verification is successful.

The first PLC is further configured to: controlling a weighing hopper to perform weighing operation according to the upper second feeding and distributing matrix, and controlling a belt conveyor to perform feeding operation;

the second PLC is further configured to: and controlling a rotating chute to execute material distribution operation according to the upper second material loading and distributing matrix.

Specifically, before the material distribution, the industrial personal computer uses the material loading and distributing matrix with the matrix number of 1-10 to perform successful material distribution, and when the industrial personal computer reads the material for the next time, if a corresponding matrix number of 11 is input by a user or the material loading and distributing matrix does not belong to the number of 1-10, the industrial personal computer creates a second material loading and distributing matrix.

And when the second feeding distribution matrix is successfully established, the industrial personal computer sends a request for editing the data of the second feeding distribution matrix to a user, receives a request response for allowing editing when the request is allowed, and edits the feeding distribution parameters of the second feeding distribution matrix according to the request response.

And when the industrial personal computer edits the second feeding and distributing matrix, carrying out row-by-row check on the second feeding and distributing matrix according to preset check conditions. The checking conditions are shown in table 4, and the checking process is the same as the first material loading and distribution matrix checking process.

And when the verification is unsuccessful, displaying second position information of the verification failure, modifying the second feeding and distributing matrix by the industrial personal computer according to the second position information, and verifying the modified second feeding and distributing matrix again until the verification is successful.

Specifically, when the industrial personal computer determines that the second feeding and distributing matrix can simultaneously meet the conditions 1-18 in the table 2, the verification can be successful; and when the second feeding and distributing matrix cannot simultaneously meet the conditions 1-18, the verification fails.

When the verification is successful, the industrial personal computer saves the second feeding and distributing matrix so that the second feeding and distributing matrix can be reused subsequently; and checking the status of the second transmission identifier; wherein the state of the second transmission identifier comprises: a second allowed transmission flag and a second disallowed transmission flag.

When the state of the sending identification is a second permission sending identification, the industrial personal computer sends and stores the second feeding and distributing matrix to the first PLC and the second PLC according to the second permission sending identification;

and the first PLC and the second PLC receive the second feeding and distributing matrix after the previous feeding and distributing matrix is processed, gradually execute the content in the second feeding and distributing matrix, and sequentially complete weighing, feeding and distributing operations on the blast furnace.

Specifically, when the blast furnace is weighed, the first PLC performs the weighing operation according to the content in table 4, and the specific execution mode is completely the same as the execution mode of the first feeding and distributing matrix; and when the blast furnace is distributed, the second PLC executes the distribution operation according to the content in the table 5, and the specific execution mode is completely the same as the execution mode of executing the first material loading and distribution matrix.

In addition, when the state of the sending identifier is a second disallowed sending identifier, the first PLC waits for the identifier of the sending state to reset, and triggers sending and stores the second feeding distribution matrix again according to the reset identifier. And when the transmission is successful, the first PLC can automatically trigger the function of storing the second feeding and distributing matrix.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.

Claims

1. A blast furnace feeding and distributing control method is characterized by comprising the following steps:

2. The control method according to claim 1, wherein the corresponding feeding and distributing matrix data is read according to the matrix number, and when the reading fails, the method further comprises:

3. The control method according to claim 1, wherein the first feeding distribution matrix is verified according to a preset verification condition, and when the verification fails, the method further comprises:

4. The control method according to claim 2, wherein the second feeding distribution matrix is verified according to a preset verification condition, and when the verification fails, the method further comprises:

5. The control method according to claim 1, wherein the feeding cloth parameter includes: variety, weight, row mark, feeding and distributing time and distributing parts at each corner.

6. A blast furnace charging and distributing control system, characterized in that the system comprises:

7. The control system according to claim 6, wherein the first control unit reads corresponding first feeding cloth matrix data according to the matrix number, and when the reading fails, the first control unit is further configured to:

8. The control system according to claim 7, wherein when the second feeding cloth matrix is transmitted and saved according to a second transmission permission identification after the verification is successful,

9. The control system of claim 6, wherein the first control unit verifies the second feeding distribution matrix according to a preset verification condition, and when the verification fails, the first control unit is further configured to:

10. The control system according to claim 7, wherein the second feeding distribution matrix is verified according to a preset verification condition, and when the verification fails, the first control unit is further configured to: