CN117504709A - Mixed ore production and distribution method and system based on port - Google Patents
Mixed ore production and distribution method and system based on port Download PDFInfo
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- CN117504709A CN117504709A CN202210910488.6A CN202210910488A CN117504709A CN 117504709 A CN117504709 A CN 117504709A CN 202210910488 A CN202210910488 A CN 202210910488A CN 117504709 A CN117504709 A CN 117504709A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 80
- 238000009826 distribution Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 59
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 257
- 229910052742 iron Inorganic materials 0.000 claims abstract description 128
- 239000002994 raw material Substances 0.000 claims abstract description 125
- 238000005204 segregation Methods 0.000 claims abstract description 104
- 239000002245 particle Substances 0.000 claims abstract description 99
- 238000002156 mixing Methods 0.000 claims abstract description 94
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 58
- 239000010959 steel Substances 0.000 claims abstract description 58
- 239000000463 material Substances 0.000 claims abstract description 50
- 238000012216 screening Methods 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000010801 machine learning Methods 0.000 claims description 6
- 239000004615 ingredient Substances 0.000 claims description 3
- 238000005245 sintering Methods 0.000 description 11
- 239000000126 substance Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 7
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000013528 artificial neural network Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
- B01F27/922—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws with two or more helices, e.g. with intermeshing helices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
Abstract
The invention provides a port-based blended ore production and distribution method and a port-based blended ore production and distribution system, which are characterized in that firstly, a transportation granularity range value of a finished blended ore with a transportation segregation degree within a preset segregation degree range is obtained; then obtaining various simulated iron ore raw materials corresponding to the finished product uniformly mixed ore; screening each simulated iron ore raw material before entering a port premixing tank, so that the particle size of each simulated iron ore raw material is within the transportation particle size range value, and obtaining various premixed iron ore raw materials; proportioning various premixed iron ore raw materials to form port mixing materials; and transporting the port mixed materials to a target steel enterprise through a transporting device. According to the port-based blended ore production and distribution method, the granularity of each raw ore seed of the blended ore produced by the port is controlled within a reasonable range, and the component segregation of the produced blended ore finished product is greatly improved after long-distance transportation, so that the quality of the product blended ore is improved.
Description
Technical Field
The invention relates to the technical field of sintering, in particular to a port-based blended ore production and distribution method and system.
Background
In the technical field of steel sintering, iron-containing raw materials (mainly various iron ores or other iron-containing raw materials) entering a sintering process have stable chemical components (mainly examined as SiO 2 And segregation degree of TFe), stable and straightforward to sinteringHas great effects of production, cost reduction and synergy. In actual production, enterprises can establish own mixing material fields for ensuring the stability of the chemical components of iron ore in the sintering process, and after the iron-containing raw materials in different production places are uniformly mixed in the mixing material fields, mixed ores with stable chemical components are produced to be used as iron-containing raw materials (mixed ores) for sintering production.
The existing iron-containing raw material production, the sintering mixing stock ground generally adopts a secondary mixing process, a steel enterprise needs to be provided with a primary stock ground and a secondary stock ground, and the mixing flow is as follows: (1) stacking each iron-containing raw material entering a factory to a primary stock ground; (2) Conveying all the iron-containing raw materials to a pre-dosing tank for standby through a small belt; (3) The stacker/reclaimer stacks various iron-containing raw materials from the pre-proportioning tank layer by layer in a secondary material field to a set height; (4) And the stacking/reclaiming machine conveys the uniformly stacked and mixed mixture to a sintering process for use in a intercepting mode. The stock of the secondary stock yard generally meets the production requirements of steel enterprises for 6 to 7 days, the occupied area of the stock yard is large (the primary stock yard of a certain factory occupies 500m multiplied by 250m, and the secondary stock yard occupies 500m multiplied by 100 m), and the steel enterprises themselves adopt a secondary mixing process, so that the investment is high and the equipment is complex. In steel production, the operation rates of sintering and blast furnaces are above 0.9, the operation rates of a primary stock yard and a secondary stock yard are generally about 0.7, and the productivity of the primary stock yard and the secondary stock yard equipment is not fully utilized.
Moreover, the iron and steel enterprises themselves adopt a secondary mixing process, and the following defects are also caused: (1) The secondary material field material pile has a height of more than ten meters, the phenomenon of material collapse often occurs in rainy season due to open-air operation, and the mixing stacker and the mixing reclaimer belong to large material field equipment, and have high daily maintenance and overhaul cost, severe environment and high overhaul difficulty; (2) In the process of tiling interception, a secondary stock ground is provided with a uniformly mixed ore pile of about 10 ten thousand tons, and the production period is seven and eight days; (3) The production period is long, the traceability of chemical components of the mixture is poor, and silicon operation difficulties in the period and the like are large.
In the prior art, the segregation influence of transportation on port blending ores in the process that the port blending ores are transported to a target steel enterprise from a port blending stock yard is not researched, so that the quality of the blending ores is reduced due to transportation segregation after the completely mixed port blending ores are transported to the target steel enterprise.
Disclosure of Invention
The port-based blending ore production and distribution method solves the technical problem that the prior blending ore is poor in blending degree and reduced in blending ore quality after the blending ore reaches a target steel enterprise in a feeding port due to the fact that the influence of transportation on segregation is not considered.
The first aspect of the invention provides a port-based blended ore production and distribution method, which comprises the following steps: acquiring a preset transportation granularity range value; obtaining various simulated iron ore raw materials corresponding to the finished product mixed ore; screening each simulated iron ore raw material before entering a port premixing tank, so that the particle size of each simulated iron ore raw material is within the transportation particle size range value, and obtaining various premixed iron ore raw materials; proportioning various premixed iron ore raw materials to form port mixing materials; and transporting the port mixed materials to a target steel enterprise through a transporting device.
In one implementation, the port-based blended ore production and distribution method further comprises: the step of acquiring the preset transportation granularity range value specifically comprises the following steps: and obtaining the transportation granularity range value of the finished product mixed ore with the transportation segregation degree in the preset segregation degree range as the preset transportation granularity range value.
In one implementation, the port-based blended ore production and distribution method further comprises: the step of acquiring the transportation granularity range value of the finished product mixed ore with the transportation segregation degree in the preset segregation degree range specifically comprises the following steps: establishing a particle size distribution transportation segregation model of the finished product mixed ore by adopting a machine learning method, taking various finished product mixed ores with different historical particle size range values, historical transportation modes and historical transportation mileage corresponding to the historical transportation modes as input parameters and taking the historical transportation segregation degree as output parameters; acquiring a target demand address and a port supply address of a target steel enterprise, and determining a simulated supply route; and obtaining the transportation granularity range value of the finished product mixed ore with the transportation segregation degree within the preset segregation degree range as the preset transportation granularity range value according to the simulated supply route and the granularity distribution transportation segregation model.
In one implementation, the port-based blended ore production and distribution method further comprises: the particle size distribution transportation segregation model comprises a particle size distribution water segregation model and a particle size distribution iron segregation model; the simulated supply route comprises a water supply mileage corresponding to the water supply route and the water supply route, a railway mileage corresponding to the railway supply route and the railway supply route, and a car mileage corresponding to the car supply route and the car supply route.
In one implementation, the port-based blended ore production and distribution method further comprises: and acquiring a particle size range value of the simulated blending material with the transportation segregation degree in a preset segregation degree range by adopting historical data, wherein the particle size range value is a preset transportation particle size range value.
In one implementation, the port-based blended ore production and distribution method further comprises: the value of the preset transportation granularity range is 3-10 mm.
In one implementation, the port-based blended ore production and distribution method further comprises: screening each simulated iron ore raw material before entering a port premixing groove, screening out iron ores with the particle size of more than 10 mm in each simulated iron ore raw material to obtain iron ore raw materials to be screened, and screening out iron ores with the particle size of less than 3 mm in each iron ore raw material to be screened to obtain the premixed iron ore raw materials.
In one implementation, the port-based blended ore production and distribution method further comprises: and predicting the transportation environment in the transportation time limit, and if the transportation environment is poor, reducing the preset transportation granularity range value and updating.
The second aspect of the embodiment of the invention provides a port-based mixed ore production distribution system, wherein the ore transportation granularity range acquisition module is as follows: the method comprises the steps of obtaining a transportation granularity range value of a finished product mixed ore with a transportation segregation degree within a preset segregation degree range; iron ore raw material analysis module: the method is used for obtaining various simulated iron ore raw materials corresponding to the finished product mixed ore; raw material screening device: the method comprises the steps of screening each simulated iron ore raw material before entering a port premixing groove, so that each simulated iron ore raw material is in a transportation granularity range value in the particle size of the raw material, and obtaining various premixed iron ore raw materials; metering and mixing device: the method is used for proportioning various premixed iron ore raw materials to form port mixing materials; a transportation device: the port mixing material is used for transporting port mixing materials to a target steel enterprise through a transporting device.
The beneficial effects are that:
according to the port-based blended ore production and distribution method, the production links of the blended ore are arranged in the port, and the transportation granularity range value of the finished blended ore with the transportation segregation degree in the preset segregation degree range is obtained; obtaining various simulated iron ore raw materials corresponding to the finished product mixed ore; meanwhile, screening each simulated iron ore raw material before entering a port premixing groove, so that each simulated iron ore raw material is in the range of the transport granularity in the particle size of the raw material, and various premixed iron ore raw materials are obtained; proportioning various premixed iron ore raw materials to form port mixing materials; then transporting the port mixed material to a target steel enterprise through a transporting device; compared with the traditional blending production scheme, the blending production and distribution method based on the port is characterized in that the granularity of each raw material ore seed of the blending produced by the port is controlled within a reasonable range, the component segregation of the produced blending finished product is greatly improved after long-distance transportation, the quality of the blending of the product is improved, and meanwhile, each steel enterprise is prevented from establishing own special blending fields (a primary material field and a secondary material field), so that a large amount of ore storage is avoided, the fund occupation is reduced, and the material field area occupation is reduced.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic diagram of a process flow of producing a blended ore according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a particle size distribution of a blended ore blended at a port;
FIG. 3 is a schematic view showing particle size distribution of the uniformly mixed ore in FIG. 2 after the uniformly mixed ore reaches a steel rabbet through transportation;
fig. 4 is a schematic flow chart of a method for producing and distributing blended ores based on ports according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of a method for producing and distributing blended ores based on a port according to another embodiment of the present invention;
FIG. 6 is a schematic flow chart of a feeding method of a port mixing yard according to another embodiment of the present invention;
fig. 7 is a system schematic diagram of a system of a blending mine production distribution system according to an embodiment of the present invention.
Detailed Description
In order to more clearly describe the production process of the mixed ore provided by the embodiment of the invention, the production process of the mixed ore of the port mixing field is first described.
As shown in fig. 1, the production process of the blended ore is as follows:
(1) After the ocean on-road raw materials enter a port, on one hand, iron-containing raw material varieties can be stacked to ports and docks, and on the other hand, the raw materials can be directly stirred into iron ore raw material proportioning tanks of corresponding varieties.
(2) The reclaimer conveys the raw materials of a plurality of varieties at a port and a dock to corresponding proportioning bins through a conveyor, the raw materials for evenly mixing ore production are various iron ores, as shown in fig. 1, a plurality of (e.g. 13) proportioning bins exist, namely, the situation that a plurality of (e.g. 13) different iron ores can be evenly mixed at most is indicated.
(3) The plurality of disc feeders respectively convey the corresponding raw materials in the proportioning tank to the metering system, and the plurality of disc feeders simultaneously meter the conveyed feeding amount in the conveying process.
(4) The metering system delivers the blended raw materials to a mixing device (such as a vertical intensive mixer or a traditional mixer), and the vertical intensive mixer realizes deep mixing of the raw materials by means of a stirring paddle rotating at a high speed.
(5) The evenly mixed materials are sent to a port for stockpiling or to a target user through a transportation link.
As shown in fig. 1, the chemical composition and the price of each raw material in each dosing tank are all known amounts,
the iron content TFe of the blended ore exiting the vertical intensive mixer can be calculated as follows:
wherein: TFeN is the iron element content percentage of iron ore of the Nth batching tank, and N is a positive integer less than or equal to the total batching tank number; GN is the ore blending flow of the iron ore of the Nth blending groove participating in ore blending, and the unit is t/min; g is the total ore blending flow of the whole blending tanks, and the unit is t/min.
SiO of mixed ore from vertical strong mixer 2 The content TSi can be calculated as follows:
wherein: TSiN is SiO of iron ore of the Nth batch tank 2 The content percentage, N is a positive integer less than or equal to the total batching groove number; GN is the ore blending flow of the iron ore of the Nth blending tank participating in the ore blending; units of t/min; g: total ore-distributing flow of all material-distributing tanks, unit t/min
The blending cost P from the vertical intensive mixer can be calculated as follows:
wherein: p is the production cost (unit supply price) of the unit blending ore, and the unit is: meta/t; k is a coefficient, and the production cost of factors such as power consumption, mechanical depreciation and the like is considered, for example, K can be 1.05 to 1.1; PN: unit price of iron ore of nth batch tank: meta/t; GN is the ore blending flow of the iron ore of the Nth blending groove participating in ore blending, and the unit is t/min; g is the total ore blending flow of the whole blending tanks, and the unit is t/min.
It should be noted that the requirements of the steel enterprise on the evenly mixed ores are large, and the requirements on the chemical components of the steel enterprise are stable; in the production process, when the corresponding mixed ore of a certain factory is produced, the formula of the mixed ore is stable and unchanged; the port mixing material field can generate production formulas corresponding to different qualities and prices in real time according to the existing iron ore sources and reserves of the port. The production formulation is shown in table 1:
table 1: port mixing material field production formula table
As shown in figure 1, various mineral seeds are mixed to produce mixed mineral, the production of the mixed mineral is a physical mixing process, and the main control parameter in the production process of the mixed mineral is that the flow rate proportion of each mineral seed in the production process is stable.
As shown in table 1, the chemical components of the ore species involved in the production of the blended ore and the proportion of each chemical component are known, so that a production formula can be generated in advance, the quality and cost of the blended ore of different production formulas are different, and the production formula can be generated in the blended ore production model according to the blended ore production model constructed by the formulas 1 to 3 according to the historical production data of the blended ore (the operation parameters of the blending tank and the intensive mixer of the port blended ore) or the requirements of each factory on the blended ore, namely, the existing production formula of each port blended ore is the production formula executable by each port blended ore according to the storage condition of the existing raw materials.
Referring to fig. 2 and 3, it is found through researches that the biggest difference between the production of the mixed ore at the wharf and the production of the mixed ore at the steel enterprise is that the wharf belongs to remote production, and the product needs to be transported to reach the steel plant; the mixed ore is formed by mixing raw ore with different sources and qualities, the raw ore has natural granularity difference, after uniform mixing, the mixed ore with different granularity is uniformly mixed, and the granularity distribution of the mixed ore is shown in figure 2; as shown in fig. 2, the ore seeds with different granularity are basically and evenly distributed after being uniformly mixed, so that the uniform mixed ore is ensured to be taken from any point and put into a sintering process after entering a steel plant, the chemical components are consistent, and the stability of raw material components in production can be ensured; however, in the transportation link of the mixed ore which is uniformly mixed in the port, unavoidable vibration exists, the mixed ore belongs to bulk material property, the materials with smaller particles in the mixed ore are enriched at the bottom of a transportation container through pores among large particles in the vibration, and the granularity distribution of the mixed ore after long-distance transportation of the finished mixed ore is shown in figure 3.
As shown in fig. 4, an embodiment of the present invention provides a port-based blended ore production and distribution method, including the steps of:
s10, acquiring a preset transportation granularity range value; and obtaining various simulated iron ore raw materials corresponding to the finished mixed ore.
It can be appreciated that in this embodiment, after the finished product mixed ore completely mixed in the feeding port is transported for a long distance, the bottom fine particles are enriched, which will cause particle size segregation of the mixed ore raw materials taken at different points, and the quality of the mixed ore will be obviously reduced, resulting in reduction of sintering quality, so that the preset transportation particle size range value is obtained before the mixed ore is produced according to the production formula, so as to reduce particle size segregation generated in the transportation process of the finished product mixed ore.
It is to be understood that each target steel rabbet (the mixing material field has rich mixing data, namely the production formula of the mixed ore, each mixed ore has the corresponding mixing proportion (production formula) of each different ore species, the technical parameter requirements of different steel rabbets on the mixed ore are different, and for a single steel rabbet, the steel rabbet requires that each chemical component in the mixed ore is stable, so that each simulated iron ore raw material corresponding to the final finished mixed ore in the production formula is required to be obtained.
It can be understood that in the invention, the transport granularity range value can be preset through historical experience determination or historical data, the preset transport granularity range value can be obtained through a software model, and the upper limit value and the lower limit value of the transport granularity range can be obtained through a simulation experiment. Wherein the preset transportation granularity range value can be 3-10 mm, 4-9 mm or 2-8 mm. Specifically, if a preset transportation granularity range value is obtained through a software model, a neural network algorithm is adopted to obtain a granularity segregation analysis model, various finished product mixed ores with different historical granularity range values, historical transportation modes and historical transportation mileage corresponding to the historical transportation modes can be used as input data, historical segregation is used as an output result, the granularity segregation analysis model is accurately obtained, and when the current transportation mode and the historical transportation mileage corresponding to the current transportation mode are known, a target steel enterprise adopts the granularity segregation analysis model to calculate according to the currently acceptable segregation result, so that the transportation granularity range value can be obtained.
And S20, screening each simulated iron ore raw material before entering the port premixing groove, so that each simulated iron ore raw material is in the range of the transportation granularity in the particle size of the raw material, and obtaining various premixed iron ore raw materials.
It can be understood that the blending ore is formed by combining various simulated iron ore raw materials, before various premixed iron ore raw materials are blended, the various premixed iron ore raw materials are screened, and each simulated iron ore raw material has a particle size within a transportation particle size range, and as the premixed iron ore raw materials have small transportation particle size segregation if in the transportation process, the blending degree of the finished blending ore reaching a target steel enterprise is favorable for ensuring, and the problem that the blending degree of the finished blending ore completely blended at a feed port is poor after reaching the target steel enterprise due to the transportation segregation, the processing cost is high and the processing procedure is complicated because the finished blending ore needs to be blended again at the target steel enterprise is solved, and the transportation particle size requirement is low.
S30, mixing various pre-mixed iron ore raw material ingredients to form a port mixing material.
As will be appreciated, in actual production, ports convey various pre-mixed iron ore raw materials to corresponding proportioning bins by conveyors through reclaimers; respectively conveying the corresponding premixed iron ore raw materials in the material mixing tank to a metering system by using a plurality of disc feeders, and directly metering the feeding amount while conveying the premixed iron ore raw materials in the conveying process by using the plurality of disc feeders; the metering system sends the prepared raw materials to a vertical intensive mixer, the vertical intensive mixer realizes deep mixing of the raw materials by means of a stirring paddle rotating at a high speed, and finally port mixing materials are formed.
S40, transporting the port mixed material to a target steel enterprise.
It can be understood that after the port mixed ore is formed, different conveying devices are selected according to the geographical environment of the target steel enterprise, and the port mixed ore is conveyed to the target steel enterprise. The transport device may be a cargo ship, or an automobile.
Further, the method further comprises the following steps: the step of acquiring the transportation granularity range value of the finished product mixed ore with the transportation segregation degree in the preset segregation degree range specifically comprises the following steps: s11, establishing a particle size distribution transportation segregation model of the finished product mixed ore by adopting a machine learning method, taking various finished product mixed ores with different historical particle size range values, historical transportation modes and historical transportation mileage corresponding to the historical transportation modes as input parameters and taking the historical transportation segregation degree as output parameters; s12, obtaining a target demand address and a port supply address of a target steel enterprise to determine a simulated supply route; s13, according to the simulated supply route and the particle size distribution transportation segregation model, obtaining a transportation particle size range value of the finished product mixed ore with the transportation segregation degree in a preset segregation degree range.
It can be understood that, firstly, a particle size distribution transportation segregation model of the finished product mixed ore is established by adopting a machine learning method, then, at least one parameter in various finished product mixed ores with different historical particle size range values, a historical transportation mode and a historical transportation mileage corresponding to the historical transportation mode is input into the particle size distribution transportation segregation model, and finally, the historical transportation segregation degree is output as a result. It should be noted that the target demand address of the target steel enterprise needs to be obtained, and then the simulated supply route is determined according to the port supply address and the target demand address of the target steel enterprise. And finally, according to the determined simulated supply route and the particle size distribution transportation segregation model, obtaining the transportation particle size range value of the finished product mixed ore.
According to the port-based blended ore production and distribution method, the production links of the blended ore are arranged in the port, and the transportation granularity range value of the finished blended ore with the transportation segregation degree in the preset segregation degree range is obtained; obtaining various simulated iron ore raw materials corresponding to the finished product mixed ore; meanwhile, screening each simulated iron ore raw material before entering a port premixing groove, so that each simulated iron ore raw material is in the range of the transport granularity in the particle size of the raw material, and various premixed iron ore raw materials are obtained; proportioning various premixed iron ore raw materials to form port mixing materials; then transporting the port mixed material to a target steel enterprise through a transporting device; compared with the traditional blending production scheme, the blending production and distribution method based on the port is characterized in that the granularity of each raw material ore seed of the blending produced by the port is controlled within a reasonable range, the component segregation of the produced blending finished product is greatly improved after long-distance transportation, the quality of the blending of the product is improved, and meanwhile, each steel enterprise is prevented from establishing own special blending fields (a primary material field and a secondary material field), so that a large amount of ore storage is avoided, the fund occupation is reduced, and the material field area occupation is reduced.
Optionally, acquiring the transportation granularity range value of the finished product mixed ore with the transportation segregation degree in the preset segregation degree range as the preset transportation granularity range value. If the target steel rabbet is fed through the feed port 1, if the acceptable transport granularity of the target steel rabbet in actual processing is known to be alpha, the transport route information between the target steel rabbet and the feed port is known to be water transport, water transport mileage, iron transport mileage and iron transport mileage, and if the feed grain size of the feed port for feeding the target steel rabbet is 3-10 mm, the port mixed material transported to the feed port meets the segregation requirement of the target steel rabbet, and the preset transport granularity range value is determined to be 3-10 mm.
Further, the step of obtaining the transportation particle size range value of the finished product mixed ore with the transportation segregation degree within the preset segregation degree range as the preset transportation particle size range value specifically includes: s11, establishing a particle size distribution transportation segregation model of the finished product mixed ore by adopting a machine learning method, taking various finished product mixed ores with different historical particle size range values, historical transportation modes and historical transportation mileage corresponding to the historical transportation modes as input parameters and taking the historical transportation segregation degree as output parameters; s12, obtaining a target demand address and a port supply address of a target steel enterprise, and determining a simulated supply route; s13, according to the simulated supply route and the particle size distribution transportation segregation model, acquiring the transportation particle size range value of the finished product mixed ore with the transportation segregation degree in the preset segregation degree range as the preset transportation particle size range value. According to the invention, the simulated supply route is determined by establishing the particle size distribution transportation segregation model, and the transportation particle size range value of the finished product mixed ore with the transportation segregation degree in the preset segregation degree range is obtained as the preset transportation particle size range value according to the simulated supply route and the particle size distribution transportation segregation model, so that the preset transportation particle size range value can be accurately and rapidly obtained.
In specific implementation, in order to improve the metering precision, the particle size distribution transportation segregation model comprises a particle size distribution water segregation model, a particle size distribution iron segregation model and a particle size distribution vehicle segregation model; the simulated supply route includes a water mileage corresponding to the water supply route and the water supply route, a rail mileage corresponding to the rail supply route and the rail supply route, and a vehicle mileage corresponding to the vehicle supply route and the vehicle supply route, wherein the single transportation mileage may be 0.
It will be appreciated that the different transportation modes have corresponding particle size distribution transportation segregation models, for example, the water transportation modes have corresponding particle size distribution water transportation segregation models, the iron transportation modes have corresponding particle size distribution iron transportation segregation models and the car transportation modes have corresponding particle size distribution car transportation segregation models, so that the transportation particle size range values of the finished product blended ore in the different transportation modes are conveniently obtained.
It can be understood that the simulated supply route includes a water supply route and a water mileage corresponding to the water supply route, a rail mileage corresponding to the rail supply route and a car mileage corresponding to the car supply route and the car supply route, wherein the car supply route includes a high-level supply route and a low-level supply route, and if the simulated supply route to the target steel enterprise only needs one section of water supply and the other section of car supply, the transportation mileage of the rail supply is 0; or the simulated supply route to the target steel enterprise only needs one section to be rail transport and the other section to be car transport, and the transportation mileage of water transport is 0.
Further, the particle size range value of the simulated blending material with the transportation segregation degree in the preset segregation degree range is obtained by adopting historical data and is the preset transportation particle size range value. According to the invention, a historical experiment is adopted to obtain that the particle size range value of the simulated blending material with the transportation segregation degree within the preset segregation degree range is the preset transportation particle size range value. The specific operation steps are as follows: the transport particle size range values may be determined by experimentation to determine the upper and lower particle size limits, for example, by first loading the finished blend stock into a standard container, for example, an automobile cargo box, or a 1 x 1 standard container; sampling the sections of the mixed ores with different heights, for example, taking 10cm samples, and recording the particle size distribution of each section; then placing the standard container on a vibrating table to vibrate for a set period of time (amplitude and frequency) according to the same working condition; or vehicles such as automobiles on standard containers are driven on common roads to set a path, for example, 100kM of the vehicles are transported on a specified path in a port; secondly, sampling mixed ores with different heights in a standard container, recording the granularity composition of the mixed ores, and comparing the granularity composition with section samples with different heights to obtain the influence degree of long-distance transportation on the segregation of the mixed ore components; repeating experiments on the mixed ore finished products with different upper and lower limits of the particle size distribution, and filling the results into a particle size distribution-transportation-segregation influence table; and finally, determining the upper limit and the lower limit of the granularity of the mixed ore acceptable by the target steel enterprise according to the segregation result.
Further, the research shows that when the transport particle size range is 3-10 mm, the transport segregation is less and the sintering effect is better.
Further, before entering a port premixing tank, screening each simulated iron ore raw material, screening out iron ores with the particle size of more than 10 mm in each simulated iron ore raw material to obtain iron ore raw materials to be screened, and screening out iron ores with the particle size of less than 3 mm in each iron ore raw material to be screened to obtain the premixed iron ore raw materials. It is understood that in the present invention, iron ore having a particle size of less than 3 mm in each iron ore raw material to be sieved may be sieved to obtain iron ore raw materials to be sieved, and iron ore having a particle size of more than 10 mm in each iron ore raw material to be sieved may be sieved to obtain premixed iron ore raw materials.
Further, the transportation environment in the transportation time limit is predicted, and if the transportation environment is bad, the preset transportation granularity range value is reduced and updated. It will be appreciated that, first, the transportation environment during the transportation time period is predicted, and if the vibration and jolt during the transportation time period are less than the depression, the transportation grain size range value matching the target steel enterprise is adopted, for example, the transportation grain size range value is 3-10 mm. If the transportation environment is worse and the vibration and jolt are larger than the first threshold value in the transportation time limit, the transportation granularity range value is reduced, for example, the quality of the mixed ore which is transported to the target steel enterprise is prevented from not meeting the requirement standard of the target steel enterprise due to the worse transportation environment, the originally determined transportation granularity range value is reduced to be 4-9 mm, and the granularity range value is updated and then enters the step of obtaining various simulated iron ore raw materials corresponding to the finished mixed ore.
Referring to fig. 4, 5 and 6, the present invention provides a method for producing and distributing blended ores based on ports, which comprises the following steps:
establishing a particle size distribution transportation segregation model of the finished product mixed ore by adopting a machine learning method, taking various finished product mixed ores with different historical particle size range values, historical transportation modes and historical transportation mileage corresponding to the historical transportation modes as input parameters and taking the historical transportation segregation degree as output parameters; acquiring a target demand address and a port supply address of a target steel enterprise, and determining a simulated supply route; according to the simulated supply route and the particle size distribution transportation segregation model, acquiring a transportation particle size range value of the finished product mixed ore with the transportation segregation degree within a preset segregation degree range as a preset transportation particle size range value; wherein the value of the preset transportation granularity range is 3-10 mm;
obtaining various simulated iron ore raw materials corresponding to the finished product mixed ore;
predicting the transportation environment in the transportation time limit, if the transportation environment is poor, reducing the preset transportation granularity range value and updating, and entering the step of obtaining various simulated iron ore raw materials corresponding to the finished mixed ore: if the transportation environment is good, the step of obtaining various simulated iron ore raw materials corresponding to the finished mixed ore is carried out;
obtaining various simulated iron ore raw materials corresponding to the finished product mixed ore;
screening each simulated iron ore raw material before entering a port premixing tank, so that the particle size of each simulated iron ore raw material is within the transportation particle size range value, and obtaining various premixed iron ore raw materials;
mixing various premixed iron ore raw material ingredients to form port mixing materials;
and transporting the port mixed materials to a target steel enterprise.
Referring to fig. 7, a second aspect of the embodiment of the present invention provides a port-based blended ore production and distribution system, and an ore transportation granularity range obtaining module: the method comprises the steps of obtaining a transportation granularity range value of a finished product mixed ore with a transportation segregation degree within a preset segregation degree range; iron ore raw material analysis module: the method is used for obtaining various simulated iron ore raw materials corresponding to the finished product mixed ore; raw material screening device: the method comprises the steps of screening each simulated iron ore raw material before entering a port premixing groove, so that each simulated iron ore raw material is in a transportation granularity range value in the particle size of the raw material, and obtaining various premixed iron ore raw materials; metering and mixing device: the method is used for proportioning various premixed iron ore raw materials to form port mixing materials; a transportation device: the port mixing material is used for transporting port mixing materials to a target steel enterprise through a transporting device.
According to the port-based blended ore production distribution method and system provided by the embodiment of the invention, firstly, the transportation granularity range value of the finished blended ore with the transportation segregation degree within the preset segregation degree range is obtained, various simulated iron ore raw materials corresponding to the finished blended ore are obtained, then, each simulated iron ore raw material is screened before entering the port premixing groove, so that the particle size of each simulated iron ore raw material is within the transportation granularity range value, various premixed iron ore raw materials are obtained, various premixed iron ore raw materials are proportioned to form port blended materials, and finally, the port blended materials are transported to a target steel enterprise through a transportation device. By the arrangement, each steel enterprise can obtain the mixed ore meeting the requirements on the premise of avoiding each steel enterprise from establishing a self special mixed material field.
The invention has been described in detail in connection with the specific embodiments and exemplary examples thereof, but such description is not to be construed as limiting the invention. It will be understood by those skilled in the art that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and its embodiments without departing from the spirit and scope of the present invention, and these fall within the scope of the present invention. The scope of the invention is defined by the appended claims.
Claims (9)
1. The port-based blended ore production and distribution method is characterized by comprising the following steps of:
s10, acquiring a preset transportation granularity range value; obtaining various simulated iron ore raw materials corresponding to the finished product mixed ore;
s20, screening each simulated iron ore raw material before entering a port premixing groove, so that each simulated iron ore raw material is in a transportation granularity range value in the particle size of the raw material, and obtaining various premixed iron ore raw materials;
s30, mixing various pre-mixed iron ore raw material ingredients to form port mixing materials;
s40, transporting the port mixed material to a target steel enterprise.
2. The port-based blended ore production distribution method according to claim 1, wherein,
the step of acquiring the preset transportation granularity range value specifically comprises the following steps: and obtaining the transportation granularity range value of the finished product mixed ore with the transportation segregation degree in the preset segregation degree range as the preset transportation granularity range value.
3. The port-based blended ore production distribution method according to claim 2, wherein,
the step of obtaining the transportation particle size range value of the finished product mixed ore with the transportation segregation degree in the preset segregation degree range as the preset transportation particle size range value specifically comprises the following steps:
s11, establishing a particle size distribution transportation segregation model of the finished product mixed ore by adopting a machine learning method, taking various finished product mixed ores with different historical particle size range values, historical transportation modes and historical transportation mileage corresponding to the historical transportation modes as input parameters and taking the historical transportation segregation degree as output parameters;
s12, obtaining a target demand address and a port supply address of a target steel enterprise, and determining a simulated supply route;
s13, according to the simulated supply route and the particle size distribution transportation segregation model, acquiring the transportation particle size range value of the finished product mixed ore with the transportation segregation degree in the preset segregation degree range as the preset transportation particle size range value.
4. The port-based blended ore production distribution method according to claim 3, wherein,
the particle size distribution transportation segregation model comprises a particle size distribution water segregation model and a particle size distribution iron segregation model;
the simulated supply route comprises a water supply mileage corresponding to the water supply route and the water supply route, a railway mileage corresponding to the railway supply route and the railway supply route, and a car mileage corresponding to the car supply route and the car supply route.
5. The port-based blended ore production distribution method according to claim 2, wherein,
and acquiring a particle size range value of the simulated blending material with the transportation segregation degree in a preset segregation degree range by adopting historical data, wherein the particle size range value is a preset transportation particle size range value.
6. The port-based blended ore production distribution method according to any one of claims 1 to 5, characterized in that,
the value of the preset transportation granularity range is 3-10 mm.
7. The port-based blended ore production distribution method according to claim 6, wherein,
screening each simulated iron ore raw material before entering a port premixing groove, screening out iron ores with the particle size of more than 10 mm in each simulated iron ore raw material to obtain iron ore raw materials to be screened, and screening out iron ores with the particle size of less than 3 mm in each iron ore raw material to be screened to obtain the premixed iron ore raw materials.
8. The port-based blended ore production distribution method according to any one of claims 1 to 5, characterized in that,
and predicting the transportation environment in the transportation time limit, and if the transportation environment is poor, reducing the preset transportation granularity range value and updating.
9. A port-based blended ore production distribution system, comprising:
ore delivery granularity range acquisition module: the method comprises the steps of obtaining a transportation granularity range value of a finished product mixed ore with a transportation segregation degree within a preset segregation degree range;
iron ore raw material analysis module: the method is used for obtaining various simulated iron ore raw materials corresponding to the finished product mixed ore;
raw material screening device: the method comprises the steps of screening each simulated iron ore raw material before entering a port premixing groove, so that each simulated iron ore raw material is in a transportation granularity range value in the particle size of the raw material, and obtaining various premixed iron ore raw materials;
metering and mixing device: the method is used for proportioning various premixed iron ore raw materials to form port mixing materials;
a transportation device: the method is used for transporting the port mixed materials to a target steel enterprise.
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