CN110841495A - System and method for accurately mixing vanadium and titanium with common iron concentrate powder - Google Patents
System and method for accurately mixing vanadium and titanium with common iron concentrate powder Download PDFInfo
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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
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/60—Mixing solids with solids
- B01F23/69—Mixing systems, i.e. flow charts or diagrams; Arrangements, e.g. comprising controlling means
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/70—Pre-treatment of the materials to be mixed
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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
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
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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
- B01F35/20—Measuring; Control or regulation
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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
- B01F35/71—Feed mechanisms
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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
- B01F35/71—Feed mechanisms
- B01F35/714—Feed mechanisms for feeding predetermined amounts
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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
- B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
- B01F35/881—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise by weighing, e.g. with automatic discharge
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/10—Obtaining titanium, zirconium or hafnium
- C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
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Abstract
The invention relates to a system and a method for accurately mixing vanadium-titanium and common iron concentrate powder, wherein the method comprises the steps of accurately positioning a storage bin of the vanadium-titanium iron concentrate powder and the common iron concentrate powder, and performing physical calibration on a weighing device of the two materials; pretreating the vanadium-titanium-iron fine powder to ensure the loosening uniformity of the vanadium-titanium-iron fine powder; accurately weighing and uniformly mixing the common iron fine powder and the pretreated vanadium-titanium iron fine powder in parts by parts; respectively verifying and controlling the blending precision of the two kinds of iron concentrate powder in the previous step; and sequentially outputting each mixed single iron powder, and simultaneously finishing the total uniform mixing output of a plurality of vanadium-titanium iron fine powders and common iron fine powders. The invention can accurately mix two materials, improve the physical and chemical overall performance of the vanadium-titanium sinter, simultaneously reduce the ore return rate, improve the yield and the weight of the vanadium-titanium sinter, fundamentally improve the flow performance of blast furnace molten iron, finally realize the smooth production of converter steelmaking, and simultaneously extract two precious metals of vanadium and titanium at low cost.
Description
Technical Field
The application belongs to the technical field of comprehensive application of vanadium titano-magnetite, and particularly relates to a system and a method for accurately mixing vanadium titano-magnetite and common fine iron powder.
Background
Vanadium and titanium mainly exist in vanadium titano-magnetite in the nature, the main extraction method is a steel-making converter extraction method, and the two elements have great effects in the fields of steel, chemistry, aerospace, national defense and the like. The vanadium titano-magnetite in China is mainly distributed in Panxi (Panzhihua-Xichang in Sichuan) and Chengde areas in Hebei province. The vanadium-titanium magnetite ore has the defects of large fluctuation range of chemical properties of sintering mineralization, low barrate index, high ore return rate and the like directly produced from vanadium-titanium iron fine powder obtained by crushing and processing vanadium-titanium magnetite ore, and troubles the high-weight production of vanadium-titanium sinter ore. In addition, the poor flowing property of the pure vanadium-titanium sintered ore in the process of reducing molten iron in the blast furnace is a main cause of fluctuation of the blast furnace ore, and great difficulty is caused for subsequent steelmaking production and vanadium-titanium extraction.
The compounding process before the vanadium-titanium-iron fine powder is used for smelting the sinter is added with a certain proportion of common iron fine powder for accurate mixing, and has a series of positive effects on three processes of sintering, blast furnace and steel making, but the vanadium-titanium-iron fine powder and the common iron fine powder cannot be identified from the appearance, so that a system and a method for accurately mixing the vanadium-titanium-iron fine powder and the common iron fine powder are needed to be provided, and the accuracy that the mixing error is less than 1% in the actual production process of the vanadium-titanium-iron fine powder and the common iron fine powder is ensured. The method has the advantages of improving the physical and chemical overall performance of the vanadium-titanium sinter, reducing the return ore rate, improving the yield and weight of the vanadium-titanium sinter, fundamentally improving the flow performance of blast furnace molten iron, finally realizing the smooth production of converter steelmaking, and simultaneously extracting two precious metals of vanadium and titanium at low cost.
Disclosure of Invention
The invention aims to provide a system and a method for accurately mixing vanadium and titanium with common iron concentrate powder, which can improve the physical and chemical overall performance of vanadium-titanium sinter, reduce the ore return rate, improve the yield and weight of the vanadium-titanium sinter, fundamentally improve the flow performance of blast furnace molten iron, finally realize the smooth production of converter steelmaking and extract two precious metals of vanadium and titanium at low cost.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a method for accurately mixing vanadium and titanium with common iron concentrate powder comprises the following steps:
a, accurately positioning a storage bin (logistics vehicle) of vanadium-titanium iron fine powder and common iron fine powder, and performing physical calibration on a weighing device of the two materials;
b, pretreating the vanadium-titanium-iron fine powder to ensure the loosening uniformity of the vanadium-titanium-iron fine powder;
step C, accurately weighing and uniformly mixing the common iron fine powder and the pretreated vanadium-titanium-iron fine powder in different positions respectively;
step D, respectively verifying and controlling the blending precision of the two kinds of iron concentrate powder in the step C;
and E, outputting the single iron powder added to each single disc at different positions in sequence through an automatic application program, and simultaneously finishing the total uniform mixing output of the multiple vanadium-titanium iron fine powders and the common iron fine powder.
The technical scheme of the invention is further improved as follows: the accurate positioning of the stock bin in the step A means that electronic positioning corresponding to the transport vehicle is arranged at the stock bin, the transport vehicle can unload materials only in an electronic positioning range, and the transport vehicle can finish empty return confirmation after the unloading confirmation is finished, so that the forced unloading phenomenon that a driver does not unload materials in the electronic positioning range is avoided, and the materials are prevented from being mixed up;
the weighing device in the step A is a disc batching device, the disc batching device comprises a plurality of disc batching machines and belt weighers which correspond to each other, and the vanadium-titanium iron fine powder and the common iron fine powder are accurately weighed by parts by adopting a single disc.
The technical scheme of the invention is further improved as follows: and the pretreatment in the step B comprises the step of carrying out viscosity treatment on the vanadium-titanium-iron fine powder, arranging an automatic vibrator at the outlet of a mixing disc of disc mixing equipment, and when the viscosity of the vanadium-titanium-iron fine powder is over poor, the automatic vibrator performs vibration action to ensure that the vanadium-titanium-iron fine powder is loose in physical properties and is uniformly mixed without fluctuation (namely fluctuation treatment).
The utility model provides an accurate mixing system of vanadium titanium and ordinary fine iron powder for realize above-mentioned method, including the central control room, the indoor well accuse host computer and the lower computer PLC that connect each other of central control to and the accurate positioning system of feed bin, a plurality of single set of weighing mixing system, pretreatment systems, mixing precision verification system, many sets of mixing system that are connected with the indoor PLC of central control, wherein:
the accurate positioning system of the stock bin comprises an IC card and an electronic tag (the electronic tag adopts a radio frequency identification technology) corresponding to a freight paper bill of a transport vehicle, the storage information of the IC card is connected with a central control automatic ordering system in a central control upper computer through a logistics management system, a central control room is also in information connection with a display screen, a camera and a wireless positioning base station, the electronic tag is arranged on the transport vehicle, the display screen, the camera and the wireless positioning base station are all arranged at the unloading position (namely the stock bin), the electronic tag is correspondingly connected with the wireless positioning base station to realize the wireless accurate positioning of the transport vehicle, only when an electronic fence formed by the wireless positioning base station conforms to the actual position of the vehicle fed back by the electronic tag of the transport vehicle, the position conforming information is fed back to the central control room, the central control room displays an unloading instruction through the display screen, and the camera shoots the unloading process of the transport vehicle, after the camera finishes shooting and unloading confirmation to the central control room, the central control room updates unloading confirmation information of the IC card through a logistics management system, so that the transport vehicle finishes empty return confirmation, the phenomenon that a driver does not forcibly unload in an electronic fence formed by the wireless positioning base station is avoided, and material confusion is avoided;
the single set of blending equipment comprises a storage bin corresponding to an IC card of a transport vehicle, an iron grate arranged above the storage bin, a disc proportioning machine corresponding to an outlet of the storage bin, an automatic vibrator arranged at an outlet of the disc proportioning machine, and a belt scale corresponding to an outlet of the disc proportioning machine, wherein an outlet of the belt scale corresponds to a plurality of sets of blending systems, the disc proportioning machine, the automatic vibrator and the belt scale are all connected with a PLC (programmable logic controller) in a central control room, and the error distance of a wireless positioning base station is smaller than the disc interval of adjacent disc proportioning machines;
the pretreatment system comprises a vibration feeder arranged on the wall of the bin and a sticky block separation plate arranged at the outlet of the bin, and the vibration feeder is connected with a PLC (programmable logic controller) in the central control room;
the blending precision verification system comprises a belt scale flow detection device, an alarm, a disc proportioning quantity regulator and a vibration frequency regulator which are respectively connected with a PLC in a central control room, wherein the disc proportioning quantity regulator is connected with a disc proportioning machine through a frequency converter, a motor and a speed reducer in sequence; the vibration feeder is connected with a PLC internal regulator (or a vibration frequency regulator can be additionally arranged, and the PLC is connected with the vibration feeder through the vibration frequency regulator); the PLC in the central control room obtains the weight of materials in the belt weigher in real time through the flow detection device, when the out-of-tolerance alarm error correction condition is met, the batching amount of the corresponding disc batching machine is adjusted through the disc batching amount adjuster, and if the batching amount is still not met and the disc is vanadium-titanium iron fine powder after adjustment, the vibration feeder on the wall of the storage bin of the corresponding vanadium-titanium iron fine powder is controlled to vibrate through the PLC internal adjuster or the vibration frequency adjuster when the vibration adjustment condition is met;
the multiple sets of blending systems comprise total mixture large belt conveyors corresponding to the outlets of all the belt scales, the total mixture large belt conveyors are correspondingly connected with the total blending systems, and the total blending systems are another set of equipment systems which are unrelated to the scheme, so that the details are not repeated.
The technical scheme of the invention is further improved as follows: the error of the wireless positioning base station is less than or equal to 0.3 m, the errors of the disc batching machine and the belt weigher are less than or equal to 1%, the opening specification of the iron grate is 250mm x 30mm, the disc spacing distance of the adjacent disc batching machines is 1-2m, and the spacing distance of the iron grates on the adjacent storage bins is also 1-2 m.
The technical scheme of the invention is further improved as follows: the out-of-tolerance alarm error correction conditions are as follows: when the actual weight of the material exceeds the theoretical weight by more than 1 percent and the duration time is more than 2 seconds, the two conditions are met simultaneously;
the vibration adjustment conditions were: the actual weight of the vanadium-titanium-iron fine powder material exceeds the theoretical weight by more than 1 percent and the duration time is more than 5 seconds, and the two conditions are met simultaneously.
The technical scheme of the invention is further improved as follows: the PLC internal regulator is a PID regulator, and the regulation mode of the PID regulator is a manual/automatic combination mode. If the scheme of additionally arranging the vibration frequency regulator is adopted, the vibration frequency regulator is also a PID regulator.
Due to the adoption of the technical scheme, the invention has the beneficial effects that: the invention realizes the precision that the quality error of the uniform mixing of vanadium and titanium and common iron concentrate powder is less than 1 percent, changes the current situation of pure vanadium powder or crude powder rough batching of a sintering machine, solves the problem that three processes of sintering, iron making and steel making cannot smoothly produce for a long period in the process of extracting vanadium and titanium, improves the physical and chemical overall performance of the vanadium and titanium sinter, reduces the ore return rate, improves the yield and weight of the vanadium and titanium sinter, fundamentally improves the flow performance of blast furnace molten iron, finally realizes the smooth production of converter steel making, and extracts two precious metals of vanadium and titanium at low cost simultaneously
Solves the problems of mixing vanadium and titanium with common iron fine powder and the precision of a single-disc belt weigher. Under the condition of ensuring that the vanadium-titanium iron fine powder and the common iron fine powder are not mixed, carrying out single-disc addition on the two iron fine powders according to theoretical requirements. The belt weigher controlling the added mass size carries out object calibration, ensures the weighing process of the belt weigher and the truth and reliability of data, takes the data as the actual added mass to carry out real-time online comparison with the theoretically required mass, stably adds and outputs under the conditions that (the weighing data of the belt weigher-the theoretically required mass data)/the weighing data of the belt weigher) is more than or equal to 1 percent, and ensures that the error of the actual proportioning precision of a single disc and a single material is less than or equal to 1 percent. And controlling the final mixing of the vanadium-titanium mixed powder and the common iron fine powder by a plurality of mixing disks, and controlling the starting and stopping intervals of the mixing disks according to the time (the distance of each mixing disk/the speed of a belt) to ensure that the vanadium-titanium mixed powder and the common iron fine powder of a plurality of sets of disks are completely superposed and accurately mixed together.
The invention carries out batching through the disc batching machine, the main function of the disc batching machine is to provide material supply for other equipment, and the use of the disc batching machine can ensure that materials can uniformly enter one piece of equipment so as to ensure that the next procedure can normally work, thereby saving labor force, protecting the performance of the equipment and prolonging the service life of the whole production line equipment.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic view of the disc batching plant arrangement of the present invention;
FIG. 3 is a flow chart of the vehicle and bin precise positioning for preventing mixing accidents according to the present invention;
FIG. 4 is a block diagram of an automatic dosing out-of-tolerance alarm error correction function of the present invention;
wherein: 1. the device comprises a storage bin, 2, an iron grate, 3, a disc batching machine, 4, a belt weigher, 5, a vibration feeder, 6, a sticky block separating plate, 7, a total mixture large belt conveyor, 8 and a belt weigher outlet.
Detailed Description
The present invention will be described in further detail with reference to examples.
The invention discloses a method for accurately mixing vanadium-titanium and common iron concentrate powder, which comprises the following steps:
a, accurately positioning bins (the bins correspond to logistics vehicles) of vanadium-titanium iron fine powder and common iron fine powder, and performing physical calibration on weighing devices of the two materials; the accurate positioning of the stock bin in the step is that the electronic positioning corresponding to the transport vehicle is arranged at the stock bin, the transport vehicle can unload materials only in the electronic positioning range, and the transport vehicle can finish the empty return confirmation after the unloading confirmation is finished, so that the forced unloading phenomenon that a driver does not unload materials in the electronic positioning range is avoided, and the materials are prevented from being mixed up;
the weighing device in the step is a disc batching device which comprises a plurality of disc batching machines 3 and belt weighers 4 which correspond to each other, and the vanadium-titanium iron fine powder and the common iron fine powder are accurately weighed by parts one by adopting a single disc.
B, pretreating the vanadium-titanium-iron fine powder to ensure the loosening uniformity of the vanadium-titanium-iron fine powder; the pretreatment in the step comprises the steps of carrying out viscosity treatment on the vanadium-titanium-iron fine powder, arranging an automatic vibrator at the outlet of a batching disc of disc batching equipment, and when the viscosity of the vanadium-titanium-iron fine powder is over poor, the automatic vibrator vibrates to ensure that the vanadium-titanium-iron fine powder is loose in physical properties and is evenly batched under the condition of no fluctuation.
Step C, accurately weighing and uniformly mixing the common iron fine powder and the pretreated vanadium-titanium-iron fine powder in different positions respectively;
step D, respectively verifying and controlling the blending precision of the two kinds of iron concentrate powder in the step C;
and E, outputting the single iron powder added to each single disc at different positions in sequence through an automatic application program, and simultaneously finishing the total uniform mixing output of the multiple vanadium-titanium iron fine powders and the common iron fine powder.
The utility model provides an accurate mixing system of vanadium titanium and ordinary fine iron powder for realize above-mentioned mixing method, including the central control room to and the accurate positioning system of feed bin, a plurality of single set of mixing system, pretreatment systems, the system of verifying of mixing precision, many sets of mixing system are got to the accurate positioning system of feed bin, a plurality of that are connected with the PLC in the central control room, wherein:
the accurate positioning system of the stock bin comprises an IC card and an electronic tag (the electronic tag adopts a radio frequency identification technology) corresponding to a freight paper bill of a transport vehicle, the storage information of the IC card is connected with a central control automatic ordering system of a central control room through a logistics management system, the central control room is also in information connection with a display screen, a camera and a wireless positioning base station, the electronic tag is arranged on the transport vehicle, the display screen, the camera and the wireless positioning base station are all arranged at the unloading position (namely the stock bin), the electronic tag is correspondingly connected with the wireless positioning base station to realize the wireless accurate positioning of the transport vehicle, only when an electronic fence formed by the wireless positioning base station is in accordance with the actual position of the vehicle fed back by the electronic tag of the transport vehicle, the position-consistent information is fed back to the central control room, the central control room displays an unloading instruction through the display screen, and the camera shoots the unloading process of the transport, after the camera finishes shooting and unloading confirmation to the central control room, the central control room updates unloading confirmation information of the IC card through a logistics management system, so that the transport vehicle finishes empty return confirmation, the phenomenon that a driver does not forcibly unload in an electronic fence formed by the wireless positioning base station is avoided, and material confusion is avoided;
the single set of blending equipment comprises a storage bin 1 corresponding to an IC card of a transport vehicle, an iron grate 2 arranged above the storage bin 1, a disc proportioning machine 3 corresponding to an outlet of the storage bin 1, an automatic vibrator arranged at an outlet of the disc proportioning machine 3, and a belt scale 4 corresponding to an outlet of the disc proportioning machine 3, wherein a belt scale outlet 8 of the belt scale 4 corresponds to a plurality of sets of blending systems, the disc proportioning machine 3, the automatic vibrator and the belt scale 4 are all connected with a PLC (programmable logic controller) in a central control room, and the error distance of a wireless positioning base station is smaller than the disc interval of the adjacent disc proportioning machines 3;
the pretreatment system comprises a vibration feeder 5 arranged on the wall of the storage bin 1 and a sticky block separation plate 6 arranged at the outlet of the storage bin 1, and the vibration feeder 5 is connected with a PLC (programmable logic controller) in a central control room;
the blending precision verification system comprises a belt scale 4 flow detection device, an alarm and a disc proportioning amount regulator which are respectively connected with a PLC in a central control room, wherein the disc proportioning amount regulator is also connected with a disc proportioning machine 3 through a frequency converter, a motor and a speed reducer in sequence; the vibration feeder 5 is connected with a PLC internal regulator (or a vibration frequency regulator can be additionally arranged, and the PLC is connected with the vibration feeder through the vibration frequency regulator); the PLC in the central control room obtains the weight of the materials in the belt weigher 4 in real time through a flow detection device, when the out-of-tolerance alarm error correction condition is met, the batching amount of the corresponding disc batching machine 3 is adjusted through a disc batching amount adjuster, and if the batching amount is still not met and the disc is vanadium-titanium iron fine powder after adjustment, the vibration feeder 5 on the wall of the storage bin 1 of the corresponding vanadium-titanium iron fine powder is controlled to vibrate through an internal adjuster or a vibration frequency adjuster of the PLC when the vibration adjustment condition is met; the PLC internal regulator or the vibration frequency regulator is a PID regulator, and the regulation mode of the PID regulator is a manual/automatic combination mode;
the multiple sets of blending systems comprise total mixture large belt conveyors 7 corresponding to the outlets of all the belt scales 4, the total mixture large belt conveyors 7 are correspondingly connected with the total blending systems, and the total blending systems are another set of equipment systems which are unrelated to the scheme, so that the details are not repeated.
The error of the wireless positioning base station is less than or equal to 0.3 meter, the errors of the disc proportioning machine 3 and the belt scale 4 are less than or equal to 1 percent, the opening specification of the iron grate 2 is 250mm x 30mm, the disc spacing distance of the adjacent disc proportioning machine 3 is 1-2m, and the spacing distance of the iron grate 2 on the adjacent bin 1 is also 1-2 m.
The out-of-tolerance alarm error correction conditions are as follows: when the actual weight of the material exceeds the theoretical weight by more than 1 percent and the duration time is more than 2 seconds, the two conditions are met simultaneously; the vibration adjustment conditions were: both cases are satisfied when the actual weight of the material exceeds the theoretical weight by more than 1% and the duration is more than 5 seconds.
The implementation process of the invention is as follows: the truck carrying the vanadium-titanium-iron fine powder and the common iron fine powder is bound with the IC card and the electronic tag according to the freight paper bill before entering a stock yard, the IC card and the electronic tag are the only identification of vehicle identification in an accurate blending system, and the problem that the vanadium-titanium-iron fine powder and the common iron fine powder cannot be identified from the appearance is solved from the source. The IC card information includes: the source (or manufacturer), variety, net weight, vehicle brand, driver name and other information of the iron powder. The IC card information is uploaded to a central control room in the production link through a logistics management system, and central control personnel distribute vehicles to the upper part of the iron grate 2 of the batching disc of the specific disc batching machine 3 according to production needs to unload. A display screen is arranged in the center of the back of each batching disc iron grate 2, wireless positioning base stations are arranged on the batching discs at intervals of 30 meters and on the struts 6 meters high, each wireless positioning base station covers the 30-meter area in a three-dimensional mode, and accurate positioning with the vehicle error smaller than 0.3 meter is completed by base station signals and electronic tags bound with the vehicles. The vehicle enters the batching disc and is positioned through the electronic fence range formed by the wireless positioning base station, the display screen of the batching disc iron grate 2 displays the vehicle information, after the electronic fence of the wireless positioning base station is matched with the actual position of the vehicle, the display screen informs a driver of an 'unloading available' instruction, meanwhile, the IC card updates 'unloading confirmation' information, and the vehicle can return to the air for confirmation. If the driver forcibly unloads the vehicle outside the electronic fence of the wireless positioning base station, the vehicle IC card cannot update the unloading information, and the vehicle cannot return to the air for confirmation and return to the factory. The interval between every two batching discs is 1.2 meters, the error of vehicle positioning less than 0.3 meter is less than the disc interval, and the double restriction mechanism of positioning accuracy and return-to-air system ensures that no mixing accident occurs.
The belt weigher 4 is a reference device for accurately mixing vanadium-titanium iron fine powder and common iron fine powder, the number of the material mixing discs of the disc material mixing machine 3 is up to 15-25 in the actual production process, and the number of the matched belt weighers 4 is 15-25. The precision of the belt scale 4 is crucial to the blending precision, and the material object calibration is carried out on all the batching discs participating in batching production. The credibility of the weighing data of the belt weigher 4 reaches the level required by international standardization. The data of the weight (weight) of the belt weigher 4 is used as a single disc to match the actual mass of the vanadium-titanium iron fine powder and the actual mass of the common iron fine powder, and the international level is also achieved. Ensuring that all vanadium-titanium iron fine powder and common iron fine powder for producing the batching discs are in a high-precision range.
The vanadium-titanium-iron fine powder has high viscosity and is easy to agglomerate, and the feed bin 1 on the material mixing disc entering the disc material mixing machine 3 is easy to adhere to the wall of the feed bin 1, so that the vanadium-titanium-iron fine powder disc material mixing process has intermittent and large-amplitude long-time oscillation accidents. Wherein, the sticky blocks and the frozen blocks in the vanadium-titanium iron fine powder are separated into large blocks and impurities by using the iron grate 2 with the specification of 250 mm-30 mm (length-width-thickness), and the vanadium-titanium iron fine powder below the iron grate 2 basically meets the disc batching requirement. The vibrating feeder 5 on the wall of the vanadium-titanium-iron fine powder bin 1 generates intermittent vibration when the actual mass exceeds the theoretical mass by more than 10% and the duration is 5 seconds, the flowing performance of vanadium-titanium-iron fine powder with high viscosity is improved, the sticky block separating plate 6 is additionally arranged at the outlet of the bin, and the automatic vibrator is arranged at the outlet of the batching disc.
The improvement of the automatic application control program of the vanadium-titanium-iron fine powder. The PLC internal regulator is a PID regulator, the PID regulator can stably operate loose and stable-flow materials (common iron concentrate powder) after 2-3 vibration periods (15-35 seconds), the vanadium-titanium iron concentrate powder is high in viscosity and easy to agglomerate, and the PID regulator is in an oscillation unstable state for a long time. The PID regulator adopts a manual/automatic combination mode to ensure that the vanadium-titanium-iron fine powder can stably run after 3-5 vibration periods (35-55 seconds). The belt weigher, the disc proportioning quantity regulator, the frequency converter, the PLC, the motor, the speed reducer and the proportioning disc form a single disc vanadium-titanium iron fine powder and common iron fine powder mixing system, so that the mass of iron powder actually added to each disc and the theoretical required mass meet the requirements of (weighing data of the belt weigher-theoretical required mass data)/weighing data of the belt weigher) that 100 percent is less than or equal to 1 percent.
And (5) correcting errors and alarming in the blending process. In the process of developing and batching, the deviation of actual mass exceeding the theoretical mass by more than 1% is 2 seconds, and the PID regulator adopts corresponding PID parameters to carry out real-time online error correction according to positive and negative deviations. If the out-of-tolerance is not adjusted to be within 1% within 10 seconds, the system automatically starts an emergency alarm signal or stops a batching instruction, and the whole-process monitoring of the batching process is guaranteed.
Claims (7)
1. A method for accurately mixing vanadium and titanium with common iron concentrate powder is characterized by comprising the following steps:
a, accurately positioning bins of vanadium-titanium iron fine powder and common iron fine powder, and performing physical calibration on weighing devices of the two materials;
b, pretreating the vanadium-titanium-iron fine powder to ensure the loosening uniformity of the vanadium-titanium-iron fine powder;
step C, accurately weighing and uniformly mixing the common iron fine powder and the pretreated vanadium-titanium-iron fine powder one by one;
step D, respectively verifying and controlling the blending precision of the two kinds of iron concentrate powder in the step C;
and E, sequentially outputting each mixed single iron powder, and simultaneously finishing the overall uniform mixing output of the multiple vanadium-titanium iron fine powders and the common iron fine powder.
2. The method for accurately mixing vanadium and titanium with common iron concentrate powder according to claim 1, which is characterized in that: the accurate positioning of the stock bin in the step A means that electronic positioning corresponding to the transport vehicle is arranged at the stock bin, the transport vehicle can unload materials only in an electronic positioning range, and the transport vehicle can finish empty return confirmation after the unloading confirmation is finished, so that the forced unloading phenomenon that a driver does not unload materials in the electronic positioning range is avoided, and the materials are prevented from being mixed up;
the weighing device in the step A is a disc batching device, the disc batching device comprises a plurality of disc batching machines (3) and belt weighers (4) which correspond to each other, and the vanadium-titanium-iron fine powder and the common iron fine powder are accurately weighed by adopting a single disc one by one.
3. The method for accurately mixing vanadium and titanium with common iron concentrate powder according to claim 1, which is characterized in that: and the pretreatment in the step B comprises the step of carrying out viscosity treatment on the vanadium-titanium-iron fine powder, arranging an automatic vibrator at the outlet of a batching disc of disc batching equipment, and when the viscosity of the vanadium-titanium-iron fine powder is over poor, the automatic vibrator performs vibration action to ensure that the vanadium-titanium-iron fine powder is loose in physical properties and is evenly batched under the condition of no fluctuation.
4. The utility model provides an accurate mixing system of vanadium titanium and ordinary fine iron powder which characterized in that: the method for realizing any one of claims 1 to 3, which comprises a central control room, and a precise bin positioning system, a plurality of single-set weighing and blending systems, a pretreatment system, a blending precision verification system and a plurality of sets of blending systems which are connected with a PLC in the central control room, wherein:
the accurate positioning system of the stock bin comprises an IC card and an electronic tag (the electronic tag adopts a radio frequency identification technology) corresponding to a freight paper bill of a transport vehicle, the storage information of the IC card is connected with a central control room through a logistics management system, the central control room is also in information connection with a display screen, a camera and a wireless positioning base station, the electronic tag is arranged on the transport vehicle, the display screen, the camera and the wireless positioning base station are all arranged at a discharging position, the electronic tag is correspondingly connected with the wireless positioning base station to realize the wireless accurate positioning of the transport vehicle, only when an electronic fence formed by the wireless positioning base station is consistent with the actual position of the vehicle fed back by the electronic tag of the transport vehicle, the consistent information of the position is fed back to the central control room, the central control room displays a command for discharging the transport vehicle through the display screen, the camera shoots the discharging process of the transport vehicle, and when the camera completes the shooting confirmation of, the central control room updates unloading confirmation information of the IC card through the logistics management system, so that the transport vehicle completes empty return confirmation, the phenomenon that a driver does not forcibly unload in an electronic fence formed by the wireless positioning base station is avoided, and material confusion is avoided;
the single set of blending equipment comprises a storage bin (1) corresponding to an IC card of a transport vehicle, an iron grate (2) arranged above the storage bin (1), a disc proportioning machine (3) corresponding to an outlet of the storage bin (1), an automatic vibrator arranged at an outlet of the disc proportioning machine (3), and a belt scale (4) corresponding to an outlet of the disc proportioning machine (3), wherein an outlet (8) of the belt scale (4) corresponds to a plurality of sets of blending systems, the disc proportioning machine (3), the automatic vibrator and the belt scale (4) are all connected with a PLC (programmable logic controller) in a central control room, and the error distance of a wireless positioning base station is smaller than the disc interval of adjacent disc proportioning machines (3);
the pretreatment system comprises a vibration feeder (5) arranged on the wall of the storage bin (1) and a sticky block separation plate (6) arranged at the outlet of the storage bin (1), and the vibration feeder (5) is connected with a PLC (programmable logic controller) in the central control room;
the blending precision verification system comprises a belt scale flow detection device, an alarm and a disc proportioning quantity regulator which are respectively connected with a PLC in a central control room, and the disc proportioning quantity regulator is also connected with a disc proportioning machine (3) through a frequency converter, a motor and a speed reducer in sequence; the vibration feeder (5) is connected with a PLC internal regulator; the PLC in the central control room obtains the weight of materials in the belt weigher (4) in real time through a flow detection device, when the out-of-tolerance alarm error correction condition is met, the dosage of the corresponding disc dosing machine (3) is adjusted through a disc dosage adjuster, and if the dosage is still not met and the disc is vanadium-titanium iron fine powder after adjustment, the vibration feeder (5) on the bin wall of the corresponding vanadium-titanium iron fine powder bin (1) is controlled to vibrate through the PLC internal adjuster when the vibration adjustment condition is met;
the multiple sets of blending systems comprise total mixture large belt conveyors (7) corresponding to the outlets of all the belt scales (4), and the total mixture large belt conveyors (7) are correspondingly connected with the total blending systems.
5. The system of claim 4, wherein the system comprises: the error of the wireless positioning base station is less than or equal to 0.3 m, the errors of the disc dosing machine (3) and the belt scale (4) are less than or equal to 1%, the opening specification of the iron grate (2) is 250mm x 30mm, the disc spacing distance of the adjacent disc dosing machine (3) is 1-2m, and the spacing distance of the iron grate (2) on the adjacent storage bin (1) is also 1-2 m.
6. The system of claim 4, wherein the system comprises: the out-of-tolerance alarm error correction conditions are as follows: when the actual weight of the material exceeds the theoretical weight by more than 1 percent and the duration time is more than 2 seconds, the two conditions are met simultaneously;
the vibration adjustment conditions were: both cases are satisfied when the actual weight of the material exceeds the theoretical weight by more than 1% and the duration is more than 5 seconds.
7. The system of claim 6, which is characterized in that: the PLC internal regulator is a PID regulator, and the regulation mode of the PID regulator is a manual/automatic combination mode.
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