JPH08143134A - Sintered ore carriage plan control system - Google Patents

Abstract

PURPOSE: To realize the planning, the operation and the stock control in a short time by incorporating the operational prerequisite, calculating the time range to start from the intermediate yard and the time range to start the in-tank operation of the sintered ore, determining the allotment to minimize the switching frequency, calculating the completion time range, and updating the reference time for simulation. CONSTITUTION: The sintered ore carriage control planning function 23 receives each information on the raw material yard arrangement plan, the sintered ore supply and demand plan 22, the operational prerequisite 24, the present condition 27 of the equipment, the present condition 28 of the operation to establish the sintered ore carriage control plan. The operational prerequisite is received by the computer, the time range of to start from the intermediate yard is calculated so as not to generate the interference in the carriage system on the outlet side of each sintering factory, the carriage work in the time zone of the out-of-operation of the factory and the repair of the carriage equipment is avoided, and the time range to start the in-tank operation is calculated so that the stock of the sintered ore tank is not less than the controlled lower limit value. In addition, the allotment to minimize the switching frequency so as to maximize the carriage efficiency is determined, the completion time range to the full tank time range is calculated, and the reference time for the plan preparing simulation is updated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the transfer of sinter ore between a sinter plant and a blast furnace plant in a raw material yard process of an iron mill, and more particularly to a sinter ore transfer plan control system using an electronic computer.

[0002]

2. Description of the Related Art In raw material transfer control in a raw material yard of a steel mill, an operator has to prepare a transfer plan for the raw material yard, the receiving / delivering, the transfer facility, the tank inventory,
Sinter plant production plan, blast furnace plant production plan, equipment repair plan,
Based on information such as equipment failure status, allocation of tanks and material brands, requests from the destination factory, etc., the stock inventory change of the tanks at the receiving tank is calculated, and the time and quantity of entering and receiving, delivery, and operation status of the conveying equipment are calculated. While simulating by trial and error, the tank inventory stayed within the upper and lower limits of management, and there was competition in receiving, paying out, and transportation equipment,
The method of deciding to avoid system interference and approach interference was taken.

[0003]

According to this conventional planning method by the operator, there are many items to be considered in a large-scale raw material yard facility and a large amount of calculation is required.
Only a skilled operator can make a practical plan, and even a skilled operator takes more than an hour to make a plan for about 8 hours, and the individual difference is large, and it is difficult to correct the plan in real time due to a sudden equipment failure or the like. There was a problem that was.

Among these, regarding the transfer plan control of the sinter ore continuously produced in the sinter factory between the sinter factory and the blast furnace factory, when the number of plants is one to one, the transfer plan is controlled. Control is relatively simple.

However, in the case of plural-to-plurality, in the combination of each sintering plant and the blast furnace plant, while keeping the stock of each brand tank within the management range, how to transfer when there is a gap in the downtime of each factory The number of items to be decided for each combination case, such as how to store the sinter ore temporarily stored in the intermediate yard, is large, and the calculation amount is large, so that only a skilled operator can make a practical plan. As a result, there was a problem in that the tank stock of each brand could fall outside the control range, and in some cases, the sintering plant could suddenly be stopped if the upper limit was exceeded.

In order to solve such a problem, various automatic control methods are currently proposed. For example, JP-A-3
No. 243508 discloses automatic control according to a yard plan based on a knowledge base, and JP-A No. 4-89708 discloses automatic control for maximizing the transfer efficiency of an ore yard based on the knowledge base. -89709 discloses an automatic control for maximizing the transport efficiency of a coal yard based on a knowledge base, and JP-A-4-89709 discloses an automatic control system for a coal yard based on a tank stock inventory simulation. Kaihei 3-279124 has proposed a method for resolving conflicts in transportation work centered on a yard plan.

However, in these conventional methods, although there has been proposed an automatic transfer control method for ore and coal once unloaded to a raw material yard, firing between two processes, that is, between a sintering plant and a blast furnace plant is performed. There is no description of mine transport control.

As described above, in the method by the conventional operator, there are many items to be taken into consideration, especially when there is a facility outage, the calculation amount is large, so that only a skilled operator can make a practical plan and suddenly break out. There is a problem that it is difficult to correct the plan in real time due to equipment failure, etc.In reality, the operation was carried out based on the judgment of the current situation, so the tank inventory of each brand was out of the control range, and in some cases exceeded the upper limit. In that case, there is a problem that the sintering factory may be suddenly stopped.

According to the present invention, a computer automatically creates a plan.
Since setting control is performed, even non-experienced operators can realize smooth operations that do not cause problems such as the conventional ones, optimize the transfer efficiency, that is, minimize the number of transfer operation switching, and plan by computer. As a planning algorithm, a sinter ore transportation plan control system that can perform calculation processing in an extremely short time is realized by a deterministic method instead of the usual trial and error method.

That is, the present invention relates to the transfer control of sinter ore continuously produced in a sinter plant from a plurality of sinter plants to a plurality of blast furnace plants in a raw material yard facility of an iron mill. To provide a sinter ore transportation plan control system which solves various problems in the method by the operator.

[0011]

According to the present invention for solving the above-mentioned problems, an operation for transporting sinter ore continuously produced from a plurality of sinter plants to a plurality of sinter ore tanks in a blast furnace factory in a steel mill is carried out. With regard to the above, in a sintered ore transportation plan control system for creating a transportation plan by a process control computer and performing automatic setting control, the sintered ore transportation control system is provided with the following means A to I. .

(1) Sintering plant suspension plan, blast furnace plant suspension plan, transfer equipment repair plan, sintering factory production status, blast furnace factory tank inventory status, yard status, transfer equipment status, operation precondition information from operators Input means A to be taken into the computer;

(2) Based on the input information, the sinter tank inventory transition calculation is performed from each blast furnace factory sinter tank current condition, and the intermediate yard time range is set so that the sinter tank inventory does not exceed the control upper limit value. Means B for calculating so that interference does not occur in the delivery system of each sintering plant;

(3) Based on the input information, the inventory transition calculation of the sinter that is not in the tank of each blast furnace factory is carried out to avoid the transportation work during the factory suspension / transportation equipment repair time, and the suspension / repair. Even if the sintering ore stock is not below the control lower limit, means C for calculating the starting time range of the tank;

(4) From the present work, the yarding time range calculated in (2) above, and the entry start time range calculated in (3) above, the destination of the next transfer work on the exit side of each sintering plant, Means D for allocating and determining the time so as to maximize the transfer efficiency and minimize the number of times of switching;

(5) Means E for calculating the end time range from the minimum work time to the full tank entry time for each blast furnace entry task assigned in (4) above;

(6) Looking over the end time range of the next work from each sintering plant calculated in (4) and (5) above, the reference time for planning simulation is set until the time when the work is confirmed. Means F for surely updating to the future without turning back;

(7) At the reference time updated in (6) above, by repeating the series of processing from (2) to (6) until the planning time, a plurality of sintering plants Means G for creating a transfer work plan for a blast furnace factory or for an intermediate yard;

(8) Means H for presenting and outputting the calculation result to the operator;

(9) Means I for setting sinter ore transport facility control information based on the calculation result;

[0021]

[Operation] This sinter transfer control system requires only inputting the necessary operating conditions in advance for sinter transfer control from multiple sinter plants to multiple blast furnace plants in the raw material yard equipment of the steel mill. By avoiding the transfer work during the downtime of each factory and the repair time of the transfer equipment, the sintered ore stock of each blast furnace is kept within the upper and lower limits of the management, and the sintered ore stock is maintained even if there is an outage or repair. Does not fall below the control lower limit.

Further, in order to systematically store the temporary sinter ore stock in the intermediate yard, a transfer plan that optimizes the transfer efficiency of the sinter ore between each sinter plant and each blast furnace plant or the intermediate yard is deterministic. Plan and perform automatic setting control while simulating.

[0023]

EXAMPLE Next, an example of the raw material yard of an iron mill of the present invention will be described. FIG. 1 shows the system configuration of an embodiment of the present invention.

In FIG. 1, reference numeral 10 is a production control computer (Visicon), in which a raw material yard plan for each day such as a blast furnace factory / sintering factory production plan and a blast furnace factory / sintering plant suspension plan is prepared. To be done.

Reference numeral 20 is a raw material yard process control computer (raw material processing computer), and the production plan information is transmitted and input to the raw material processing computer, and is input to the supply and demand planning function group 22 through the reception edit processing 21.

Reference numeral 50 is an input / output CRT terminal device having an interface between a raw material processing container and an operator, and 25 is a CR.
The operator's input / output processing function for controlling the input / output of T,
The operator can set facility repair plans on a hourly / minute basis, operating conditions such as tank / brand allocation plans, and other planning functions 22 and 23.
Can be input from the CRT terminal device 50 as the precondition information.

In the supply and demand plan 22, a raw material yard allocation plan is a daily yard mountain shift plan for incoming and outgoing raw materials, and a sinter ore supply and demand plan is a daily sinter ore stock / stockpile plan.

On the other hand, 40 is a block diagram of a field equipment group in the raw material yard, 41 is a group of mobile machines (accepting machine and paying machine), 42 is a conveyor group, and 53 is a weighing machine group.

Reference numeral 30 is a lower-level controller for controlling on-site equipment, which controls the on-site equipment 40, and manages its operation record and current status. The controller device is a mobile device control PC (programmable controller) for controlling the mobile device group.
31, the conveyor group is controlled by the conveyor control PC 32.

The lower controller 30 for controlling the field equipment
Transmits the transportation, weighing performance information, equipment operation, and failure performance information to the raw material processing container 20 in real time. The raw material process control 20 receives and inputs the relevant information in the performance collection / editing processing 29, and the equipment operation status and equipment failure status as the equipment status information 27, the transfer work performance as the operation information 28, and the data file as the yard status and tank status information. To store.

The sinter ore transportation control planning function 23, which is the central function of the present invention, includes a raw material yard arrangement plan, a sinter ore supply and demand plan 22, a facility repair plan and a tank brand change plan of the above-mentioned supply and demand planning function group. Information on the operation preconditions 24, the equipment current status 27 such as the equipment operation status and the equipment failure status, the yard status, the tank inventory status, and the operation status 28 such as the transfer work result are input, and a sinter transfer control plan is prepared.

This is displayed on the CRT terminal device 50 via the operator input / output processing 25, and at the same time, the setting control processing 2
The transmission setting information is output as the transport control information to the field device control lower controller 30 via 6.

The field device control lower controller 30 is
The transport control is performed according to the transport control information, and the transport record information is transmitted to the raw material process control 20. Raw material process 2
0, the transport control planning function 23 based on the corresponding performance information
Thus, the automatic transfer control is performed by repeating the cycle of reviewing the plan in real time as needed and transmitting and outputting the transfer control information to the field device control lower controller 30.

Next, FIG. 2 shows a transfer system diagram of the sintering plant and the blast furnace plant in the embodiment. In the embodiment, two sintering plants, that is, one sintering 60 (referred to as 1DL) as shown in FIG.
There are 2 sinters 70 (called 2DL), 2 blast furnace factories, namely 1 blast furnace 90 (called 1BF) and 2 blast furnaces 100 (called 2DL), and a common intermediate yard 80 for temporary placement of sinter. , 1DL to 2BF, 2DL to 1BF, 2DL to 2BF, 1DL to intermediate yard, 2
There is a sinter transfer system from DL to intermediate yard, intermediate yard to 1BF, and intermediate yard to 2BF, and it is not possible to simultaneously execute intermediate yard delivery due to equipment interference.

Next, the processing procedure of the sintering ore transportation planning function (FIG. 1-23) by the raw material process which is the central processing of the present invention will be described with reference to the flowchart of FIG.
This process is executed by the operator inputting a production request to the raw material yard process control when making a plan at an arbitrary timing.

(A) Data input, initial value, condition setting (110), necessary information for this process (blast furnace / sinter production plan, blast furnace / sinter suspension plan, equipment repair plan, tank brand change schedule, etc.) Input operating conditions, raw material yard layout plan, sinter ore supply and demand plan, equipment operation status, equipment failure status, yard status, blast furnace factory sinter tank inventory status, transfer work results, planning time) from each file and edit To do.

(B) For 1DL and 2DL yarding determination (120), yarding times and amounts of 1DL and 2DL are calculated based on the upper and lower limits of the yarding management range.

Explaining the case of 1DL with a calculation formula, FIG.
As shown in Fig. 1, the 1DL sintered ore total tank inventory Z ₂₄₁ after 24 hours is calculated by the following formula (1), and exceeds the standard value of _yarding start levels 1 (Z _u11 ) and 2 (Z _u21 ). If it exceeds, as shown in FIG. 5, the _yarding start time range (t _s11, t _s21 ) and the _yarding end time range (t _e11, t _e21 ) are set to the following (2), It is calculated by the equations (3), (4) and (5).

[0039]

[Number 1] _{Z 241 = Z 01 + P 1D} -β 11 (t 1 -SD 1B) -β 21 (t 1 -SD 2B) ... (1)

In the above equation (1), Z ₂₄₁ ; 1DL sinter ore total tank inventory (t) after 24 hours, Z ₀₁ ; 1DL sinter ore total tank inventory (t), P _1D ; 1DL Daily production (t), α ₁ ; 1DL sintered ore entry tank t / H (t / H), β ₁₁ ; 1BF 1DL sintered ore total cutout t / H
(T / H), β ₂₁ ; Total cutout of 1BF sinter of 2BF t / H
(T / H), t ₁ ; Remaining time before 24H (h), SD _1B ; 1BF rest time within the remaining time until 24H (h), SD _2B ; 2BF rest within the remaining time after 24H Time (h)

[0041]

[Number 2] _{t s11 = t 0 + (Z} u11 -Z 01) / (α 1 -β 11 -β 21) ......... (2)

[0042]

[ _Equation 3] t _e11 = t _s11 + (Z _u11 −Z _L1 ) / (β ₁₁ + β ₂₁ ) ... (3)

[0043]

(4) t _s21 = t ₀ + (Z _u21 −Z ₀₁ ) (α ₁ −β ₁₁ −β ₂₁ ) ... (4)

[0044]

[ _Equation 5] t _e21 = t _s21 + (Z _u21 −Z _L1 ) / (β ₁₁ + β ₂₁ ) ... (5)

In the above equations (2), (3), (4) and (5), t ₀ : current time, t _s11 ; start time of 1DL yard start 1, t _e11 ; end time of 1DL yard start 1, t _s21; 1DL yards out second start time, t _e21; 1DL yards out second end time, Z _u11; 1DL yards out starting level _{1 (t), Z u21;} 1DL yards out starting level 2 (t), Z _L1 ; 1DL Yard end level (t)

Similarly, in the case of 2DL, when the definitions are made as shown in FIGS. 6 and 7, the above (2), (3), (4),
With the same calculation formula as the equation (5), t _s12 ; start time of 2DL yard start 1, t _e12 ; end time of 2DL yard start 1, t _s22 ; start time of 2DL yard start 2, t _e22 ; 2DL yard start Find the end time of 2.

(C) Regarding the yarding interference adjustment (130), when yarding of 1DL and 2DL overlap,
Adjust interference. As the adjustment method, as shown in FIG.
The leading yarding 1 and the trailing yarding 2 are selected as the combination with the largest margin in the avoidable range. If it is not possible to adjust, we will provide action guidance.

(D) Regarding 1BF, 2BF bath entry start range calculation (140), the total next bath entry start time range for each brand for 1BF and 2BF is defined as the repair plan, failure, blast furnace factory, and sintering of the transportation equipment. Calculate in consideration of factory shutdown.

The calculation formula for 1BF will be described for each case. As shown in FIG. 9, in the normal case where the carrier system has no repair plan, the following equations (6) and (7) are obtained. Two
BF has the same formula.

[0050]

T ₁₁ = {Z _S1 −Z _u1 + (α ₁ −β ₁ ) t _min1 } / β ₁ ……… (6)

[0051]

[Expression 7] t ₃₁ = (Z _S1 −Z _L1 ) / β ₁ ……… (7)

In the above formulas (6) and (7), t ₁₁ ; 1BF minimum bath start time, t ₂₁ ; 1BF minimum bath end time, t ₃₁ ; 1BF maximum bath start time, t ₄₁ ; 1BF maximum bath time. Tank start time, α ₁ ; 1BF total tank t / H (t / H), β ₁ ; 1BF total cutting t / H (t / H), t _min1 ; 1BF minimum tank working time (constant) (H) , Z _u1 ; Total upper limit inventory amount for each 1BF issue (t), Z _L1 ; Total lower limit inventory amount for each 1BF issue (t), Z _S1 ; Reference time total inventory amount for each 1BF issue (t)

Further, as shown in FIG. 10, when there is a repair schedule, it is impossible to enter the tank during the repair time zone, and therefore, equations (8) and (9) are used so that the lower limit is not exceeded during that time zone.

[0054]

T ₁₁ = [(α ₁ −β ₁ ) {t _e1 − (Z _u1 −Z _L1 ) / β ₁ } −Z _u1 + Z _s1 ] / α ₁ ... (8)

[0055]

[Formula 9] t ₃₁ = (Z _S1 −Z _L1 ) / β ₁ ………… (9)

Here, t _s1 ; carrier system repair start time for each 1BF brand, t _e1 ; carrier system repair end time for each 1BF brand

(E) Regarding 1DL and 2DL transport work allocation (150), the current transport work (for 1BF, 2BF, or yard) starting from 1DL and 2DL and the next transport work (for 1BF, 2BF) Or, the yarding) switching timing is assigned while satisfying the end time range of the transfer work this time and the start time range of the next transfer work.

As an example, FIG. 11 illustrates the allocation method for each case when the current work is for 2BF and the next work is for 1BF in the transfer work from 1DL (or 2DL). In the figure, Jt _min is the minimum end time of the current work, Jt _max is the maximum end time of the current work, t ₁₁ is the minimum bath start time for the next work 1BF, and t ₃₁ is the next work 1B.
The maximum bathing start time for F is set.

As a case, as shown in FIG.
There are 6 types depending on the magnitude relation of t _min , Jt _max , t ₁₁ and t ₃₁ , and the assignment is to switch the current work by the smaller of Jt _max or t ₃₁ in order to minimize the number of switching times in terms of work efficiency. .

As another example, 1 DL (or 2D
An assignment method for each case when the current work is for 2BF and the next work is for yarding will be described with reference to FIG. If the next work is out of the yard, the lower limit will not be exceeded, and the current tank work is given priority.
In any case like J. 2, Jt _max
Up to the yard, and only the calculation amount will be adjusted for yarding.

(F) In 1BF and 2BF tank entry end range calculation (160), the tank entry work ending time range is calculated when the next tank entry operation determined in F50. 1BF
The case of (10) to (1
It is expressed as in equation 3).

[0062]

[ _Equation 10] Jt _min1 = t _min1 (10)

[0063]

[Equation 11] Jt _max1 = (Z _u1 −Z _s1 + β ₁ · t _n1 ) / (α ₁ −β ₁ ) ... (11)

[0064]

[Number 12] _{t 21 = t n1 + Jt min1} ......... (12)

[0065]

[Mathematical formula-see original document] t ₄₁ = t _n1 + Jt _max1 (13)

Here, t _{n1 is the} 1BF current entry determination start time.

Further, as shown in FIG. 10, the cases (14) to (17) are performed in the case where there is a repair in the tank transfer system. The same calculation is performed in the case of 2BF.

[0068]

[ _Equation 14] Jt _min1 = t _e1 − (Z _u1 −Z _L1 ) / β ₁ −t ₁ ……… (14)

[0069]

[Equation 15] Jt _max1 = (Z _u1 −Z _s1 + β ₁ · t _n1 ) / (α ₁ −β ₁ ) ... (15)

[0070]

(16) t ₂₁ = t _n1 + Jt _min1 (16)

[0071]

[Expression 17] t ₄₁ = t _n1 + Jt _max1 (17)

(G) Regarding the reference time update (170), the reference time which is the key of the simulation calculation is updated. The reference time is updated to the minimum time of the smaller one of the 1DL or 2DL next transfer work end time range. An example thereof will be described with reference to FIG.

Referring to FIG. 13, a method of updating the reference time to t ₁ , t ₂ , t ₃ and t ₄ with the current time t ₀ will be described.
At the current time t ₀ , the 1DL current transfer work and the 2DL current transfer work are confirmed. 1DL next transfer work and 2D
The start time ranges Jt _min and Jt _max of the L-th transport work are calculated.

Jt _{min21 of} 1DL next transfer work and 2D
Comparing Jt _min22 for L-th transport work, Jt _min22 <J
Since t _min21, the work is settled until Jt _{min22 of} 2DL, and the reference time t ₀ is updated to t ₁ (first reference time update).

Next, at the reference time t ₁ , the start time range Jt _min of the 1DL-th transfer work and the 2DL-th transfer work,
Calculate each Jt _max . Jt of 1DL next transfer work
_{Compare min31} and Jt _min32 of 2DL next transfer work,
Since t _min32 <Jt _min31, the work is settled until Jt _{min32 of} 2DL, and the reference time t ₁ is updated to t ₂ (second reference time update).

At the reference time t ₂ , the start time range Jt _min31 , Jt _max31 of the 1DL next transfer work has been calculated, and the start time range Jt _min42 , J of the 2DL next transfer work has been calculated.
Calculate t _max42 .

Jt _{min31 of} 1DL next transfer work and 2D
Compare Jt _min42 of L-th transport work, Jt _min42 <J
Since t _min31, the work is _decided up to Jt _{min42 of} 2DL, and the reference time t ₂ is updated to t ₃ (third reference time update).

At the reference time t ₃ , the start time range Jt _min31 , Jt _max31 of the 1DL next transfer work has been calculated, and the start time range Jt _min52 , J of the 2DL next transfer work has been calculated.
Calculate t _max52 .

Next, Jt _min31 and 2 of the 1DL next transfer work
Comparing Jt _min52 of DL next transfer work, Jt _min31 <
Since it is Jt _min52, the work is _decided until Jt _{min31 of} 2DL, and the reference time t ₃ is updated to t ₄ (4
Update the reference time for the second time). Such an algorithm allows the simulation to be deterministically and efficiently computer processed.

The simulation is performed by repeating the processing flow as described above.

(H) Regarding the 1BF and 2BF bin inventory amount update (180), the tank inventory amount at the new reference time is calculated and updated.

(I) Regarding the plan range end determination (190), it is determined whether or not a plan for the designated plan creation time has been created.

In this way, the system can automatically formulate a plan for the transfer control of the sinter,
Automatic transfer setting control can be performed by the transfer control system shown in FIG.

[0084]

INDUSTRIAL APPLICABILITY As described above, in the raw material yard equipment of an iron mill, the sinter ore that is continuously produced at a plurality of sinter factories is conveyed to a plurality of blast furnace factories with regard to the transfer control of the sinter ore. The following effects can be realized by the transport planning control system of the present invention.

(1) A plan that could not be planned by a skilled operator in the past is automatically computerized by a computer, and there is no individual difference, so that even a non-skilled operator can perform a smooth operation. And workability can be improved.

(2) In the automatic transfer planning control, avoid the transfer work during the downtime of each factory and the repair time of the transfer equipment, and keep the sintered ore tank inventory of each blast furnace factory within the lower limit range of management. The temporary sinter ore stock in the intermediate yard can be systematically stockpiled without inadvertently stopping production at the sinter plant, and the efficiency of equipment management and stock management can be improved.

(3) Since the computer-aided planning method is a deterministic method rather than a conventional trial-and-error method, calculation processing can be performed in an extremely short time, and transport efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a system configuration of a sintered ore transportation plan control system of the present invention.

FIG. 2 is a schematic diagram showing an example of a sinter ore transportation system between a sinter plant and a blast furnace plant.

FIG. 3 is a flowchart showing a processing flow for automatically planning a sinter transfer plan between a sinter factory and a blast furnace factory, which is a central function of the present invention.

FIG. 4 is a graph showing an example of a total inventory transition of a sintering ore tank in a blast furnace and a yarding start time range calculation method.

FIG. 5 is a graph showing an example of a total inventory change of a sintering ore tank in a blast furnace and a yarding start time range calculation method.

FIG. 6 is a graph showing an example of a method for calculating a stock transition of a sintered ore tank in a blast furnace and a yarding start time range calculation method.

FIG. 7 is a graph showing an example of a method for calculating the inventory transition and the yarding start time range of the sintered ore tank in the blast furnace.

FIG. 8 is a diagram showing an example of an interference adjustment method when the yarding time ranges of a plurality of sintering plants overlap.

FIG. 9 is a diagram showing an example of a method for calculating a bathing start time range of a sinter of a blast furnace.

FIG. 10 is a diagram showing an example of a method for calculating a bathing start time range of a sinter of a blast furnace.

FIG. 11 is a diagram showing an example of a method for determining a transfer work switching timing starting from a sintering plant.

FIG. 12 is a diagram illustrating an example of a method of determining a transfer work switching timing starting from a sintering plant.

13 is a diagram showing an example of a method for updating the reference time of the simulation calculation in the flowchart shown in FIG.

[Explanation of symbols]

10 Production Management Calculator (Vidicon) 20 Raw Material Yard Process Control Calculator (Procon) 21 Vidicon Transmission Receiving / Editing Processing 22 Supply and Demand Planning Function 23 Sintered Ore Transportation Planning Function 24 Operation Precondition Information 25 Operator Input / Output Processing Function 26 Lower Controller Setting control processing function 27 Facility current status information 28 Operation current status information 29 Actual result collection editing processing function 30 Lower controller for field equipment control 31 Programmable controller for mobile machine control 32 Programmable controller for conveyor control 40 Raw material yard field equipment 41 Mobile machine 42 Conveyor 43 Weighing machine 50 Raw material yard CRT terminal equipment for process control 60 1 Sintering factory 70 2 Sintering factory 80 Intermediate yard 90 1 Blast furnace factory 100 2 Blast furnace factory

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location G06F 17/60

Claims (1)

[Claims] 1. A process control computer automatically prepares a transfer plan for transferring sinter ore continuously produced from a plurality of sinter plants to a plurality of sinter tanks in a blast furnace factory at a steelworks. In the sinter ore transportation plan control system for setting control, (1) sinter factory suspension plan, blast furnace factory suspension plan, transportation facility repair plan, sinter factory production status, blast furnace factory tank inventory status, yard status, transportation Input means A for importing the equipment status and operation prerequisite information from the operator into the computer; (2) Sintering tank inventory transition calculation is performed based on the input information for each blast furnace factory Means B for calculating the intermediate yarding time range so that interference does not occur in the delivery system of each sinter plant so that the inventory does not exceed the control upper limit value; (3) Based on the input information, Inventory transition of sintered ore not in bath From calculation, means C that avoids transportation work during factory suspension / transport facility repair time, and calculates the entry start time range such that the sintered ore stock does not fall below the control lower limit even if there is suspension / repair (4) From the current work, the yarding time range calculated in (2) above, and the entry start time range calculated in (3) above, specify the destination and time of the next transfer work on the outlet side of each sintering plant. , D means for deciding the allocation so as to minimize the number of times of switching so as to maximize the transfer efficiency; (5) Regarding the tank blasting work for each blast furnace allocated in (4) above, from the minimum working time to the full tank entry time Means E for calculating the end time range up to (6) Looking over the end time range of the next work from each sintering plant calculated in (4) and (5) above, until the time when the work is confirmed , Means F for deterministically updating the reference time for planning simulation to the future without going back; (7) above (6) At the reference time updated in, above (2)
Means G for creating a transfer work plan for a plurality of blast furnace plants from a plurality of sintering plants or for an intermediate yard by repeating a series of processes from (1) to (6) until the planning time; (8) A means H for presenting and outputting a calculation result to an operator; (9) A means I for setting sinter ore transportation facility control information based on the result of the calculation;