CN110578025B - Optimization design method for length of main belt of blast furnace - Google Patents
Optimization design method for length of main belt of blast furnace Download PDFInfo
- Publication number
- CN110578025B CN110578025B CN201910483865.0A CN201910483865A CN110578025B CN 110578025 B CN110578025 B CN 110578025B CN 201910483865 A CN201910483865 A CN 201910483865A CN 110578025 B CN110578025 B CN 110578025B
- Authority
- CN
- China
- Prior art keywords
- main belt
- feeding
- length
- ore
- tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2300/00—Process aspects
- C21B2300/04—Modeling of the process, e.g. for control purposes; CII
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
Abstract
The invention belongs to the technical field of industrial production, in particular to an optimization design method for the length of a main belt of a blast furnace, which aims at solving the problems of reduced feeding speed caused by insufficient length of the main belt, waste of equipment capacity caused by overlong length of the main belt and the like and provides the following scheme that the main belt is usedThe automatic material feeding model at the top of the blast furnace feeding system with the belt feeding is combined with the feeding equipment and the feeding time sequence, the starting time of a material feeding signal is set, and the length and the speed of a main belt are converted into time TLAnd calculating t according to the maximum batch weight and the equipment design capability in the design requirementoAnd tzoThen the material is operated for a time toThe material is from the feeding tank to the discharging tank tzoAnd TLAdding the materials to obtain the feeding time t of the materials, and calculating the feeding speed K. The invention enables engineering technicians to calculate the optimal length of the main belt, and can avoid the problems of material feeding speed reduction caused by insufficient length of the main belt and equipment capacity waste caused by overlong length of the main belt.
Description
Technical Field
The invention relates to the technical field of industrial production, in particular to a method for optimally designing the length of a main belt of a blast furnace.
Background
The feeding system is a main component of the blast furnace process and comprises two systems of under-groove feeding and furnace top material distribution; in recent years, with the increasing of the effective furnace volume of a newly-built blast furnace, the process forms of belt feeding and bell-less furnace top are generally adopted.
The feeding speed is the most important index of the feeding system, and directly influences the yield and the energy efficiency of the blast furnace, and practice proves that the feeding speed is influenced by factors.
At present, main belt feeding is a trend of newly building large and medium-sized blast furnaces, the length of a main belt is an important design parameter and needs to be selected according to feeding requirements, but in actual production, technologists often do not recognize the influence of the length of the main belt and a furnace top feeding mode on feeding speed, so that the waste of equipment capacity is caused, and therefore, the method for optimally designing the length of the main belt of the blast furnace is provided.
Through search, the patent with the publication number of CN101329566B granted to China patent discloses a data transmission control method between a blast furnace feeding system and a blast furnace distributing system. The data transmission control method between the blast furnace feeding system and the blast furnace distributing system in the patent has the following defects: the system can control the strict matching of the batching parameters, the distributing parameters and the actual production state, and simultaneously ensure the normal production of the blast furnace, but the feeding speed can not be improved to some extent.
Disclosure of Invention
The invention provides a blast furnace main belt length optimization design method based on the technical problems of feeding speed reduction caused by insufficient main belt length and equipment capacity waste caused by overlong main belt length.
The invention provides a method for optimally designing the length of a main belt of a blast furnace, which combines an automatic material demanding model on the furnace top of a blast furnace feeding system for loading by using the main belt with feeding equipment and a feeding time sequence, sets the starting time of a material demanding signal, and converts the length and the speed of the main belt into time TLAnd solving t according to the maximum batch weight and the equipment design capacity in the design requirementoAnd tzoThen the material is operated for a time toThe material is from the feeding tank to the discharging tank tzoAnd TLAdding the materials to obtain the feeding time t of the materials, calculating the feeding speed K, and then obtaining the lowest feeding speed K according to the design requirementSFinding TLThe upper limit value of (3).
Preferably, said TLThe upper limit value of the method is further confirmed according to the influence of the main belt on the equipment capacity and the inclination angle limit factor, so that the method for quickly calculating the automatic feeding capacity of the blast furnace top comprises the following steps:
s1: establishing an automatic furnace top material requiring model of a blast furnace feeding system;
s2: and carrying out time sequence analysis on the materials to be fed, and deducing a length design algorithm of the main belt.
Preferably, the method for establishing the automatic top charging model of the blast furnace feeding system is as follows:
the capacity of the material preparation and discharge equipment under the tank can completely meet the requirement of the maximum feeding speed;
in order to calculate the maximum feeding speed, the material distribution is started when the lower tank is full, and a material requiring signal is triggered;
from the foregoing, K isg≤KpTherefore, the maximum feeding speed is analyzed according to the batch material requirement mode;
the material batch composition adopts an ore and coke mode;
note: the ore is marked o, the coke is marked c, the ore duration is toCoke duration of tc(ii) a Meanwhile, in order to ensure the action time of furnace top equipment, enough safety interval needs to be kept between ore and coke material flows, and the safety interval between the ore and coke material flows is recorded as tfoSafe separation of coke from ore stream is tfc(ii) a Note KpFor feeding in batches, KgThe feeding speed is the feeding speed when the material is required according to the tank; when the length of the main belt is recorded as L and the running speed is recorded as v, the length is converted into time T in the time sequence analysisL；
Under the premise, the time for loading the ore batch from the upper tank to the lower tank is recorded as tzoFor safety, t is constantzo≤tfo。
Preferably, in S2, the timing analysis is as follows:
when t is 0, the furnace top supplies materials, ore discharge starts under the trough, and ore material heads appear on the main belt;
t＝TLwhen the ore stub bar reaches the top of the furnace, the ore stub bar is put on the tank;
t＝TL+towhen in use, the ore tailing enters the furnace top and is loaded into the tank;
t＝TL+to+tzowhen in use, the ore is loaded into the lower tank from the upper tank;
according to the premise, the material distribution is started, a material pressing and demanding signal is triggered, the next material batch starts to be discharged, and the time required by one complete material batch is TL+to+tzoThe feeding speed is obtained as follows:
recording the design requirement that the minimum feeding speed is KSThen K is greater than or equal to KSNamely:
obtaining:
in the formula (1), toAnd tzoCalculating according to the maximum batch weight of the design and the design capacity of the equipment, namely determining the upper limit value of the design length of the main belt, wherein the shorter the length of the main belt is, the better the theoretical analysis result is, but in the actual production, the shorter the length of the main belt is, the better the main belt is, the shorter the main belt is, the better the main belt is, the lower the main belt;
further analysis shows that if the desired feed rate is to be achieved, then:
TL+to+tzo≤to+tc+tfo+tfci.e. by
TL≤tc+tfo+tfc-tzo (2)
tfoAnd tzoThe numerical values are similar, and the formula (2) is simplified as follows:
TL≤tc+tfc (3)
equation (3) is called the main belt ideal length upper limit constraint;
from the foregoing, when the length of the main belt exceeds the constraint of the formula (3), the excess part of the main belt cannot be utilized, which is a waste of capacity; when the length of the main belt exceeds the constraint of the formula (1), the minimum feeding speed required by the design cannot be reached, and the production capacity of the blast furnace is directly influenced.
The beneficial effects of the invention are as follows:
after the method is applied, engineering technicians can quickly and accurately calculate the optimal length of the main belt, so that the problem of reduction of the feeding speed caused by insufficient length of the main belt can be solved, the problems of waste of equipment capacity and overlarge occupied area caused by overlong length of the main belt can be solved, and the aims of saving energy and land and improving the production efficiency are fulfilled.
Drawings
FIG. 1 is a model diagram of the furnace top automatic charging of the blast furnace feeding system established by the method for optimally designing the length of the main belt of the blast furnace;
FIG. 2 is a schematic diagram of a time sequence analysis of a method for optimally designing the length of a main belt of a blast furnace according to the present invention;
FIG. 3 is a main belt material flow distribution diagram of the method for optimally designing the length of the main belt of the blast furnace.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-3, a method for optimally designing the length of a main belt of a blast furnace, which combines an automatic material feeding model on the top of a blast furnace feeding system using the main belt for feeding with a feeding device and a feeding time sequence, sets the starting time of a material feeding signal, and converts the length and the speed of the main belt into time TLAnd solving t according to the maximum batch weight and the equipment design capacity in the design requirementoAnd tzoThen the material is operated for a time toThe material is from the feeding tank to the discharging tank tzoAnd TLAdding the materials to obtain the feeding time t of the materials, calculating the feeding speed K, and then obtaining the lowest feeding speed K according to the design requirementSFinding TLThe upper limit value of (3).
In the present invention, TLAccording to the influence of the main belt on the limit factors of the capacity and the inclination angle of the equipment, the upper limit value of (1)The method for rapidly calculating the automatic feeding capacity of the blast furnace top comprises the following steps:
s1: establishing an automatic furnace top material requiring model of a blast furnace feeding system;
s2: and carrying out time sequence analysis on the materials to be fed, and deducing a length design algorithm of the main belt.
The method for establishing the automatic furnace top material demanding model of the blast furnace feeding system comprises the following steps:
the capacity of the material preparation (vibrating screen, feeder) and discharge (weighing hopper) equipment under the trough can completely meet the requirement of the maximum feeding speed;
in order to calculate the maximum feeding speed, the material distribution is started when the lower tank is full, and a material requiring signal is triggered;
from the foregoing, K isg≤KpTherefore, the maximum feeding speed is analyzed according to the batch material requirement mode;
the material batch composition adopts an ore and coke mode;
note: the ore is marked o, the coke is marked c, the ore duration is toCoke duration of tc(ii) a Meanwhile, in order to ensure the action time of furnace top equipment, enough safety interval needs to be kept between ore and coke material flows, and the safety interval between the ore and coke material flows is recorded as tfoSafe separation of coke from ore stream is tfc(ii) a Note KpFor feeding in batches, KgThe feeding speed is the feeding speed when the material is required according to the tank; when the length of the main belt is recorded as L and the running speed is recorded as v, the length is converted into time T in the time sequence analysisL；
Under the premise, the time for loading the ore batch from the upper tank to the lower tank is recorded as tzoFor safety, t is constantzo≤tfo。
In S2, the timing analysis is as follows:
when t is 0, the furnace top supplies materials, ore discharge starts under the trough, and ore material heads appear on the main belt;
t＝TLwhen the ore stub bar reaches the top of the furnace, the ore stub bar is put on the tank;
t＝TL+towhen the ore material tail enters the furnaceThe tank is lifted;
t＝TL+to+tzowhen in use, the ore is loaded into the lower tank from the upper tank;
according to the premise, the material distribution is started, a material pressing and demanding signal is triggered, the next material batch starts to be discharged, and the time required by one complete material batch is TL+to+tzoThe feeding speed is obtained as follows:
recording the design requirement that the minimum feeding speed is KSThen K is greater than or equal to KSNamely:
obtaining:
in the formula (1), toAnd tzoCalculating according to the maximum batch weight of the design and the design capacity of the equipment, namely determining the upper limit value of the design length of the main belt, wherein the shorter the length of the main belt is, the better the theoretical analysis result is, but in the actual production, the shorter the length of the main belt is, the better the main belt is, the shorter the main belt is, the better the main belt is, the lower the main belt;
further analysis shows that if the desired feed rate is to be achieved, then:
TL+to+tzo≤to+tc+tfo+tfci.e. by
TL≤tc+tfo+tfc-tzo (2)
tfoAnd tzoThe numerical values are similar, and the formula (2) is simplified as follows:
TL≤tc+tfc (3)
equation (3) is called the main belt ideal length upper limit constraint;
from the foregoing, when the length of the main belt exceeds the constraint of the formula (3), the excess part of the main belt cannot be utilized, which is a waste of capacity; when the length of the main belt exceeds the constraint of the formula (1), the minimum feeding speed required by the design cannot be reached, and the production capacity of the blast furnace is directly influenced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (1)
1. A method for optimally designing the length of a main belt of a blast furnace is characterized in that an automatic material feeding model on the furnace top of a blast furnace feeding system for feeding by using the main belt is combined with feeding equipment and a feeding time sequence, the starting time of a material feeding signal is set, and the length and the speed of the main belt are converted into time TLAnd solving t according to the maximum batch weight and the equipment design capacity in the design requirementoAnd tzoThen the material is operated for a time toThe material is from the feeding tank to the discharging tank tzoAnd TLAdding the materials to obtain the feeding time t of the materials, calculating the feeding speed K, and then obtaining the lowest feeding speed K according to the design requirementSFinding TLAn upper limit value of (d);
the T isLThe upper limit value of the method is further confirmed according to the influence of the main belt on the equipment capacity and the inclination angle limit factor, so that the method for quickly calculating the automatic feeding capacity of the blast furnace top comprises the following steps:
s1: establishing an automatic furnace top material requiring model of a blast furnace feeding system;
s2: carrying out time sequence analysis on the materials to be fed, and deducing a length design algorithm of the main belt;
the method for establishing the automatic furnace top material demanding model of the blast furnace feeding system comprises the following steps:
the capacity of the material preparation and discharge equipment under the tank can completely meet the requirement of the maximum feeding speed;
in order to calculate the maximum feeding speed, the material distribution is started when the lower tank is full, and a material requiring signal is triggered;
from the foregoing, Kg≤KpTherefore, the maximum feeding speed is analyzed according to the batch material requirement mode;
the material batch composition adopts an ore and coke mode;
note: the ore is marked o, the coke is marked c, the ore duration is toCoke duration of tc(ii) a Meanwhile, in order to ensure the action time of furnace top equipment, enough safety interval needs to be kept between ore and coke material flows, and the safety interval between the ore and coke material flows is recorded as tfoSafe separation of coke from ore stream is tfc(ii) a Note KpFor feeding in batches, KgThe feeding speed is the feeding speed when the material is required according to the tank; when the length of the main belt is recorded as L and the running speed is recorded as v, the length is converted into time T in the time sequence analysisL；
Under the premise, the time for loading the ore batch from the upper tank to the lower tank is recorded as tzoFor safety, t is constantzo≤tfo；
In S2, the timing analysis is as follows:
when t is 0, the furnace top supplies materials, ore discharge starts under the trough, and ore material heads appear on the main belt;
t＝TLwhen the ore stub bar reaches the top of the furnace, the ore stub bar is put on the tank;
t＝TL+towhen in use, the ore tailing enters the furnace top and is loaded into the tank;
t＝TL+to+tzowhen in use, the ore is loaded into the lower tank from the upper tank;
according to the premise, the material distribution is started, a material pressing and demanding signal is triggered, the next material batch starts to be discharged, and the time required by one complete material batch is TL+to+tzoThe feeding speed is obtained as follows:
recording the design requirement that the minimum feeding speed is KSThen K is greater than or equal to KSNamely:
obtaining:
in the formula (1), toAnd tzoCalculating according to the maximum batch weight of the design and the design capacity of the equipment, namely determining the upper limit value of the design length of the main belt, wherein the shorter the length of the main belt is, the better the theoretical analysis result is, but in the actual production, the shorter the length of the main belt is, the better the main belt is, the shorter the main belt is, the better the main belt is, the lower the main belt;
further analysis shows that if the desired feed rate is to be achieved, then:
TL+to+tzo≤to+tc+tfo+tfci.e. by
TL≤tc+tfo+tfc-tzo (2)
tfoAnd tzoThe numerical values are similar, and the formula (2) is simplified as follows:
TL≤tc+tfc (3)
equation (3) is called the main belt ideal length upper limit constraint;
from the foregoing, when the length of the main belt exceeds the constraint of the formula (3), the excess part of the main belt cannot be utilized, which is a waste of capacity; when the length of the main belt exceeds the constraint of the formula (1), the minimum feeding speed required by the design cannot be reached, and the production capacity of the blast furnace is directly influenced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910483865.0A CN110578025B (en) | 2019-06-04 | 2019-06-04 | Optimization design method for length of main belt of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910483865.0A CN110578025B (en) | 2019-06-04 | 2019-06-04 | Optimization design method for length of main belt of blast furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110578025A CN110578025A (en) | 2019-12-17 |
| CN110578025B true CN110578025B (en) | 2021-04-09 |
Family
ID=68810536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910483865.0A Expired - Fee Related CN110578025B (en) | 2019-06-04 | 2019-06-04 | Optimization design method for length of main belt of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110578025B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT380490B (en) * | 1984-09-06 | 1986-05-26 | Voest Alpine Ag | DEVICE FOR RECOVERING THE FEELABLE WARMTH OF SHOETABLE HOT MATERIAL |
| CN101329566B (en) * | 2008-07-31 | 2010-06-09 | 中冶南方工程技术有限公司 | Data transfer control method between blast furnace feeding system and blast furnace cloth system |
| CN101968637B (en) * | 2010-09-26 | 2012-09-05 | 中冶南方工程技术有限公司 | Communication control method between blast furnace under-tank feeding system and furnace roof distribution system |
| CN102816881B (en) * | 2012-09-03 | 2013-10-30 | 中冶南方工程技术有限公司 | Switching method for double-concentrated hopper under blast furnace tank |
| CN203096092U (en) * | 2013-01-21 | 2013-07-31 | 尚领军 | Blast furnace belt feeding control system |
| CN104988261A (en) * | 2015-06-30 | 2015-10-21 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Blast furnace belt feeding system and material list setting method thereof |
-
2019
- 2019-06-04 CN CN201910483865.0A patent/CN110578025B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN110578025A (en) | 2019-12-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101736099B (en) | Secondary treatment system for steel slag and method thereof | |
| CN103801443B (en) | A kind of active slag powder production system and technological process thereof | |
| CN206746767U (en) | A kind of desulfurization agstone preparation system | |
| CN102424889A (en) | Automatic feeding system for automatic steel smelting converter and control method thereof | |
| CN107304461B (en) | Strength hybrid technique and its device for sintering production | |
| CN104962305A (en) | Emulsion waste oil sludge and coking system dust-removal ash briquette coal production process | |
| CN109734335A (en) | A method of high-quality steel-making slag powder is produced based on steel slag modifying agent | |
| CN107385201A (en) | A kind of iron content solid waste intelligence disposal system and its control method | |
| CN205772057U (en) | Discharge device under a kind of blast furnace | |
| CN104911291A (en) | Blast furnace multiple-material preparation system and method in concentrated weighing mode | |
| CN1596315A (en) | Raw material charging method for bell-less blast furnace | |
| CN110578025B (en) | Optimization design method for length of main belt of blast furnace | |
| CN104001370A (en) | Dry discharge technology of tailings | |
| CN105536981A (en) | Process for recovering gold, silver and sulfur from castaway slag | |
| CN205295386U (en) | Aluminium ash preparation deoxidier device | |
| CN206318883U (en) | The equipment for producing double-doped powder using slag micro powder and slag micropowder | |
| CN107326198A (en) | A kind of processing method and system of high phosphorus low-grade manganese carbonate ore | |
| CN202465759U (en) | Automatic feeding system for automatic steel converter | |
| CN103993158B (en) | Process and system for removing alkali metals out of iron and steel making fly ash | |
| CN214582514U (en) | Silica or coke feeding device in ferrosilicon smelting process | |
| CN206372945U (en) | A kind of automatic control system separated for white residue | |
| CN112015130A (en) | Material quantitative division control device and control method | |
| CN204052122U (en) | Coverter pig sintering machine screening pelletizing machine | |
| CN212102917U (en) | Lime on-line screening charging and powder recycling system for converter | |
| CN214825949U (en) | Uniform ore feeding hopper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210409 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |