CN109580963B - Accurate batching device and batching method for full-automatic drum detection of ore - Google Patents
Accurate batching device and batching method for full-automatic drum detection of ore Download PDFInfo
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- CN109580963B CN109580963B CN201710908143.6A CN201710908143A CN109580963B CN 109580963 B CN109580963 B CN 109580963B CN 201710908143 A CN201710908143 A CN 201710908143A CN 109580963 B CN109580963 B CN 109580963B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/22—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for apportioning materials by weighing prior to mixing them
- G01G19/32—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for apportioning materials by weighing prior to mixing them using two or more weighing apparatus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/22—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for apportioning materials by weighing prior to mixing them
- G01G19/34—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for apportioning materials by weighing prior to mixing them with electrical control means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N2035/00465—Separating and mixing arrangements
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Abstract
The invention provides an accurate batching device and a batching method for full-automatic drum detection of ores. The invention comprises a primary vibration reduction scale, wherein a feeding belt is arranged below an outlet of the primary vibration reduction scale and is connected with a secondary static scale, a discharge hole of the secondary static scale is connected with a rotary drum, the primary vibration reduction scale comprises a hopper, a vibrator and a meter which are arranged in the hopper, and the vibrator, the meter and the secondary static scale are connected with a PLC (programmable logic controller). The invention can solve the technical problem of drum detection data deviation caused by inaccurate material preparation in drum strength detection.
Description
The technical field is as follows:
the invention relates to an accurate batching device and method for full-automatic drum detection of ores, belonging to the field of metallurgy detection.
Background art:
with the continuous development of the current scientific technology, the drum detection of the iron ore and the sinter ore is gradually converted into the automatic sampling, automatic screening, automatic batching and automatic drum detection modes from the original manual sampling, manual screening, manual batching and manual weighing modes. At present, the current national standard GB/T245731-. Therefore, accurate matching of various size fractions of samples is always a difficulty of full-automatic drum detection and is also one of important factors influencing accurate measurement of drum strength, and specific data are shown in table 1.
The traditional automatic drum detection batching in China is generally in a primary weighing mode, namely, a vibration feeding and decrement weighing mode is adopted for batching, and the batching is also used as the accurate mass of a sample entering a drum. The vibration reduction hopper is called as a general structure hopper scale, and the hopper is not specially designed, so that in an actual rotary drum test, although the total mass of the drum-entering samples can better meet the national standard requirements, the drum-matching mass of each size grade sample is easy to have large deviation, which means that the drum-entering mass of each size grade sample and the mass deviation of the theoretically calculated drum-matching mass are large, and thus, the detection data of the rotary drum has large fluctuation or abnormal data occurs.
The reasons for the above phenomenon are the following 4 aspects:
1. the method is unreasonable in that theoretical batching and final mass weighing are directly completed by adopting a first-level hopper scale, and the main reason is that the first-level hopper scale is in a vibration state in the drum batching and material discarding stages, so that the state of the scale is unstable and easy to drift, the actual blanking quality is inconsistent with the scale display quality, and the quality compensation in drum batching is difficult to find due to the difference, and the scale is required to be calibrated frequently, so that the weighing accuracy cannot be completely guaranteed, and the mass proportion of each grain-level sample entering the drum is difficult to control.
2. The mass compensation mode of mixing the drum with each grain-size test material is unreasonable, and the automatic system cannot realize very accurate drum mixing, so that the actual mass and the theoretical mass have certain deviation. However, when the drum matching of 25-40mm and 16-25mm samples frequently generates equidirectional deviation (positive deviation or negative deviation at the same time) in the field operation process, the deviation has larger influence on the detection value of the rotary drum because the sintered ore with the same quality has large granularity and large rotary drum strength.
3. Because the hopper is a common hopper (the hopper width has no requirement, the weighing opening of a small-size-fraction hopper is usually more than 8-12 times of the maximum size fraction, and the weighing opening of a large-size-fraction hopper is usually 5-8 times), when the hopper is actually matched with the drum, the section of one-time blanking is large (blanking amount), so that the mass of the matched drum of each size fraction sample is not easily matched with the theoretical mass, and the mass difference between the sample and the theoretical mass is easy to appear.
4. Because the lower end of the hopper is not provided with any receiving device, part of the proportioned grain-size test material is suspended at the edge of the hopper scale, and once vibration occurs in the field or other hopper scales vibrate to prepare the materials, the test material at the edge of the hopper falls into a conveying belt and enters the rotary drum; because the mass of the material of the size fraction is transmitted to the control system, the total mass of the material entering the drum cannot be taken into account by the part of the sample, so that the actual mass of the sintering ore entering the drum is larger than the recorded mass in the computer system, and the detection data of the rotary drum index has deviation.
TABLE 1 automatic and manual tumbler comparison data sheet (part)
Disclosure of Invention
The invention aims to provide an accurate batching device and method for full-automatic drum detection of ores aiming at the existing problems, and solves the technical problem of drum detection data deviation caused by inaccurate batching in drum strength detection.
The above purpose is realized by the following technical scheme:
the utility model provides an accurate dosing unit that full-automatic rotary drum of ore detected, includes one-level vibrations decrement balance, the export below of one-level vibrations decrement balance be provided with the pay-off belt, the pay-off belt connect the static balance of second grade, the discharge gate of the static balance of second grade connect the rotary drum, one-level vibrations decrement balance include the hopper and set up electromagnetic shaker and counter in the hopper, electromagnetic shaker, counter with the static balance of second grade connect the PLC controller.
The accurate batching device for full-automatic drum detection of ores is characterized in that a telescopic receiving disc is arranged below an outlet of the primary vibration reduction scale, the telescopic receiving disc adopts an electric or pneumatic driving mechanism, and the driving mechanism is connected with the PLC.
The primary vibration reduction scales are three and are respectively used for weighing and proportioning 25-40mm sintered ores, 16-25mm sintered ores and 10-16mm sintered ores.
The method for batching by using the accurate batching device for the full-automatic drum detection of the ores comprises the following steps: in the feeding process of the primary vibration reduction scale, residual test materials in the hopper are weighed in real time through the meter, the weighing result is sent to the PLC, the PLC calculates the material amount actually entering the sample feeding belt in time through differential subtraction, and is compared with the theoretical drum feeding amount, whether the feeding is continued or not is determined, the discharging amount of the primary vibration reduction scale is controlled through controlling the vibration of the vibrator, the test materials placed under the primary vibration weighing hopper are fed to the secondary static scale through the sample feeding belt to be accurately weighed, the mass is taken as the final drum feeding mass, and the PLC checks the weighing accuracy of the scale through checking the difference value of the primary vibration scale and the secondary static scale.
According to the method for proportioning the accurate proportioning device for the full-automatic drum detection of the ore, in the discharging process of the primary vibration reduction scale, 25-40mm of sintering ore is firstly proportioned, the quality deviation generated by mixing the 16-25mm of sintering ore with the drum is subjected to quality compensation, and the quality deviation generated by mixing the drum twice is subjected to quality compensation by mixing the 10-16mm of sintering ore.
According to the method for batching by using the accurate batching device for full-automatic drum detection of the ore, the telescopic material receiving disc below the primary vibration scale which does not participate in batching extends out to prevent the material from entering a feeding belt.
Has the advantages that:
the invention changes the primary vibration reduction weighing mode in the existing full-automatic drum strength detection of sinter and iron ore, adopts the secondary static weighing mode, can greatly improve the accuracy of drum allocation, and in addition, adopts the secondary weighing mode, monitors the state of the scale in real time through the difference management of the vibration reduction scale and the static scale weighing data, finds the scale abnormity in time, processes in time and reduces the report rate of abnormal data.
The invention changes the drum-matching mass centralized compensation mode in the full-automatic drum strength detection of the existing sinter and iron ore, and adopts a secondary drum-matching mass compensation mode, thereby reducing the drum data deviation caused by the homodromous mass deviation of the ingredients of the first two grain grades in the original primary mass compensation mode, and improving the accuracy of the drum data.
The outlet of the primary vibration weight reducing scale adopts a novel width and height limiting structure, the width of the outlet of the weight reducing scale bucket is 3-5 times of the interval of a sample of a nominal size fraction, and the height of the outlet is 2-3 times of the maximum size fraction. The method can reduce the material feeding amount of each grain sample by the drum, and reduce the difference value between the material feeding amount of each grain sample and a theoretical value, thereby improving the material feeding accuracy of each grain sample; an automatic material receiving device is added under each batching hopper to prevent batching vibration or other vibration from causing non-batching or proportioned grain-sized sample to enter the rotary drum, thereby improving the quality of the sample entering the rotary drum.
The invention is suitable for full-automatic drum strength detection of materials such as iron ore, sinter, coke and the like.
Detailed Description
The present invention will be further illustrated below with reference to specific embodiments, which are to be understood as merely illustrative and not limitative of the scope of the present invention.
This embodiment an accurate dosing unit that full-automatic rotary drum of ore detected, including one-level vibrations decrement balance, the export below of one-level vibrations decrement balance be provided with the feeding belt, the feeding belt connect the static balance of second grade, the discharge gate of the static balance of second grade connect the rotary drum, one-level vibrations decrement balance include the hopper and set up electromagnetic shaker and counter in the hopper, electromagnetic shaker, counter with the static balance of second grade connect the PLC controller.
The accurate proportioning device that full-automatic rotary drum of ore detected, the export below of one-level vibrations decrement balance be provided with flexible take-up (stock) pan, flexible take-up (stock) pan adopt electronic or pneumatic actuating mechanism, actuating mechanism connect the PLC controller.
The primary vibration reduction scales are three and are respectively used for weighing and proportioning 25-40mm sintered ores, 16-25mm sintered ores and 10-16mm sintered ores.
The method for batching by using the accurate batching device for the full-automatic drum detection of the ores comprises the following steps: in the feeding process of the primary vibration reduction scale, residual test materials in the hopper are weighed in real time through the meter, the weighing result is sent to the PLC, the PLC calculates the material amount actually entering the sample feeding belt in time through differential subtraction, and is compared with the theoretical drum feeding amount, whether the feeding is continued or not is determined, the discharging amount of the primary vibration reduction scale is controlled through controlling the vibration of the vibrator, the test materials placed under the primary vibration weighing hopper are fed to the secondary static scale through the sample feeding belt to be accurately weighed, the mass is taken as the final drum feeding mass, and the PLC checks the weighing accuracy of the scale through checking the difference value of the primary vibration scale and the secondary static scale.
According to the method for proportioning the accurate proportioning device for the full-automatic drum detection of the ore, in the discharging process of the primary vibration reduction scale, 25-40mm of sintering ore is firstly proportioned, the quality deviation generated by mixing the 16-25mm of sintering ore with the drum is subjected to quality compensation, and the quality deviation generated by mixing the drum twice is subjected to quality compensation by mixing the 10-16mm of sintering ore.
According to the method for batching by using the accurate batching device for full-automatic drum detection of the ore, the telescopic material receiving disc below the primary vibration scale which does not participate in batching extends out to prevent the material from entering a feeding belt.
Table 2 shows examples of the quality of the prior art ingredients.
TABLE 2 quality data table of drum composition for each particle size
Table 3 shows the quality of the ingredients of the present invention.
TABLE 3 quality data table of drum distribution of each grade in this patent technology
Note: and data is abnormal in a first-level decrement scale, and sampling and drum matching detection are carried out again after the decrement scale is corrected.
As can be seen from Table 2, the original system cannot find the abnormality of the primary decrement scale in real time during drum matching. As can be seen in table 3: the standard deviation of the drum assembly after implementation is 0.038, which is greatly improved compared with the drum assembly precision (0.074) before implementation; meanwhile, the weighing deviation of a certain level of decrement scale in the drum matching process is found in real time, and corresponding measures (calibration, re-matching and the like) are taken in time, so that the accuracy of the detection of the strength of the rotary drum is improved, and the production of the blast furnace is guided more effectively.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and additions can be made without departing from the method of the present invention, and these modifications and additions should also be regarded as the protection scope of the present invention.
Claims (1)
1. The utility model provides a method for carry out batching with accurate proportioning device that full-automatic rotary drum of ore detected which characterized in that: the accurate batching device for the full-automatic ore rotary drum detection comprises a primary vibration reduction scale, a feeding belt is arranged below an outlet of the primary vibration reduction scale and is connected with a secondary static scale, a discharge port of the secondary static scale is connected with a rotary drum, the primary vibration reduction scale comprises a hopper, a vibrator and a meter, the vibrator and the meter are arranged in the hopper, and the vibrator, the meter and the secondary static scale are connected with a PLC (programmable logic controller); a telescopic receiving disc is arranged below an outlet of the primary vibration reduction scale, the telescopic receiving disc adopts an electric or pneumatic driving mechanism, and the driving mechanism is connected with the PLC; the outlet of the first-level vibration reduction scale adopts a width and height limiting structure, the width of the hopper outlet of the first-level vibration reduction scale is 3-5 times of the interval of the sample of the weighed size fraction, and the height of the hopper outlet of the first-level vibration reduction scale is 2-3 times of the maximum size fraction;
the method comprises the following steps: in the discharging process of the primary vibration reduction scale, the rest of the test material in the hopper is weighed in real time through a meter, the weighing result is sent to a PLC (programmable logic controller), the PLC calculates the amount of the material actually entering a feeding belt in time through differential subtraction, and compares the amount with the theoretical drum entering amount, so that whether discharging is continued or not is determined, the discharging amount of the primary vibration reduction scale is controlled by controlling the vibration of a vibrator, the test material discharged from the hopper of the primary vibration reduction scale is sent to a secondary static scale through the feeding belt to be accurately weighed, and the mass is taken as the final drum entering mass; meanwhile, the PLC checks the weighing accuracy of the scales in real time by checking the mass data difference value of the primary vibration reduction scale and the secondary static scale;
in the discharging process of the primary vibration reduction scale, firstly, 25-40mm of sintering ore is prepared, the quality deviation generated by mixing 16-25mm of sintering ore with drums is subjected to quality compensation, and the quality deviation generated by mixing drums twice is subjected to quality compensation by mixing 10-16mm of sintering ore;
the telescopic material receiving disc below the first-level vibration reduction scale which does not participate in the batching extends out to prevent the materials from entering the feeding belt.
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| CN201710908143.6A CN109580963B (en) | 2017-09-29 | 2017-09-29 | Accurate batching device and batching method for full-automatic drum detection of ore |
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| CN109580963B true CN109580963B (en) | 2022-06-10 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3400179A (en) * | 1965-04-02 | 1968-09-03 | Fritz O. Wienert | Pellet manufacture |
| CN2129006Y (en) * | 1992-05-19 | 1993-03-31 | 河南省安阳钢铁公司 | Equipment for emtage and mixing of different materials |
| CN101275891A (en) * | 2007-03-29 | 2008-10-01 | 上海梅山钢铁股份有限公司 | Accurate drum matching method in sintered mine full-automatic barrate strength measuring |
| CN201434720Y (en) * | 2009-07-21 | 2010-03-31 | 徐州依蓝科技发展有限公司 | Vibration weight-drop scale |
| CN203837938U (en) * | 2014-04-28 | 2014-09-17 | 安阳新达自动检测设备有限公司 | Automatic sample drum distributing system |
| CN204057275U (en) * | 2014-02-28 | 2014-12-31 | 郑州白云实业有限公司 | Automatic batching system |
| CN105319121A (en) * | 2014-06-30 | 2016-02-10 | 宝钢不锈钢有限公司 | Sinter ore finish product quality sampling and detection method |
-
2017
- 2017-09-29 CN CN201710908143.6A patent/CN109580963B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3400179A (en) * | 1965-04-02 | 1968-09-03 | Fritz O. Wienert | Pellet manufacture |
| CN2129006Y (en) * | 1992-05-19 | 1993-03-31 | 河南省安阳钢铁公司 | Equipment for emtage and mixing of different materials |
| CN101275891A (en) * | 2007-03-29 | 2008-10-01 | 上海梅山钢铁股份有限公司 | Accurate drum matching method in sintered mine full-automatic barrate strength measuring |
| CN201434720Y (en) * | 2009-07-21 | 2010-03-31 | 徐州依蓝科技发展有限公司 | Vibration weight-drop scale |
| CN204057275U (en) * | 2014-02-28 | 2014-12-31 | 郑州白云实业有限公司 | Automatic batching system |
| CN203837938U (en) * | 2014-04-28 | 2014-09-17 | 安阳新达自动检测设备有限公司 | Automatic sample drum distributing system |
| CN105319121A (en) * | 2014-06-30 | 2016-02-10 | 宝钢不锈钢有限公司 | Sinter ore finish product quality sampling and detection method |
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