CN210945664U - Blast furnace slag discharge on-line detection device - Google Patents
Blast furnace slag discharge on-line detection device Download PDFInfo
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- CN210945664U CN210945664U CN201920446127.4U CN201920446127U CN210945664U CN 210945664 U CN210945664 U CN 210945664U CN 201920446127 U CN201920446127 U CN 201920446127U CN 210945664 U CN210945664 U CN 210945664U
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Abstract
The utility model provides a blast furnace slag output on-line measuring device, include: the slag quantity weighing device is arranged at the tail end of the blast furnace slag discharging groove and is used for weighing the weight of slag discharging in real time; a slag runner working lining is arranged on the slag quantity weighing device; the gravity sensor is arranged on the concrete or steel structure platform, and the slag quantity weighing device is arranged and suspended on the gravity sensor; the data acquisition system is used for collecting the weight data of the change of the slag quantity weighing device in real time; and the data processing and displaying system is used for calculating and displaying the slag output and the slag output flow value of the blast furnace in real time according to the weight data of the slag output change of the blast furnace slag. The method calculates the slag discharge amount and the instantaneous flow of the blast furnace slag by detecting the weight change of the slag discharged from the blast furnace in real time, can meet the requirement of online detection on adjustment of the slag discharge amount of the blast furnace under the complex process of the blast furnace, improves the reliable judgment basis for ensuring the stable and smooth operation of the blast furnace, and reduces the power consumption of a slag treatment system for the basis of water quantity adjustment of a subsequent slag flushing system.
Description
Technical Field
The utility model relates to a blast furnace smelting technical field especially relates to a blast furnace slag output on-line measuring device.
Background
Blast furnace iron making is a complex system project, and because a blast furnace hearth summarizes severe internal environments such as high temperature, high pressure, chemical erosion and the like, parameters aiming at the flowing state of the slag iron in the hearth can be obtained only by an indirect means. The slag amount of each ton of pig iron smelted by the blast furnace is an important parameter of blast furnace operation, reflects the grade of ore and the consumption of fuel, is difficult to measure in actual production and can only be obtained by theoretical calculation, the slag amount calculation is influenced by errors of chemical components of materials, and the calculated slag amount has larger errors.
However, the existing blast furnace slag tapping amount detection method includes four methods: firstly, a belt scale is arranged on a granulated slag conveying belt to calculate the slag quantity, and the method has higher requirements on instrument installation, more maintenance and higher cost; secondly, weighing and metering the weight of molten iron by a rail weighbridge of a transport tanker, and reversely pushing the slag amount according to theoretical slag, but the method has serious hysteresis and large error, and cannot reflect the real-time condition of tapping slag of a blast furnace; thirdly, the slag discharge amount of the blast furnace is indirectly measured by using the current change of a dehydration rotary drum controlled by the frequency conversion of the blast furnace wheel method grain slag processing system, and because the slag discharge amount and the current of the dehydration rotary drum are not in a linear relation, the method can not effectively detect the slag discharge amount of the blast furnace under the condition of severe working condition change and has larger hysteresis; fourthly, the randomness error of a manual judgment method is larger by depending on the visual inspection of the length of the experienced blast furnace, so that the fine, intelligent and standardized operation of the blast furnace production is not facilitated.
SUMMERY OF THE UTILITY MODEL
In view of the above prior art's shortcoming, the utility model aims to provide a blast furnace slag volume on-line measuring device that slags for can't detect blast furnace slag volume and flow in real time among the solution prior art, lead to the problem that hysteresis quality appears in the blast furnace slag volume detection.
In order to achieve the above and other related objects, the utility model provides an on-line detection device for slag discharge of blast furnace slag, which comprises
The slag quantity weighing device is arranged at the tail end of the blast furnace slag discharging groove and is used for weighing the weight of slag discharging in real time; wherein, a slag runner working lining is arranged on the slag quantity weighing device;
the gravity sensor is arranged on a concrete or steel structure platform, and the slag quantity weighing device is arranged and suspended on the gravity sensor;
the data acquisition system is connected with the gravity sensor and is used for collecting the weight data of the slag quantity weighing device in real time;
and the data processing and displaying system is connected with the data acquisition system and is used for calculating and displaying the slag output and the slag output flow value of the blast furnace in real time according to the weight data of the slag output change of the blast furnace slag.
As mentioned above, the utility model discloses a blast furnace slag discharge on-line measuring device has following beneficial effect:
slag discharge of the blast furnace slag amount is weighed in real time by arranging a weighing device at the tail end of a slag runner, and an online detection device for the slag amount and the flow is provided, so that the technical problem that the slag amount and the flow of the blast furnace are effectively detected under various working condition changes can be solved, the online detection device can meet the requirements of the high-precision blast furnace slag amount and the flow under the adjustment of the complex working conditions of blast furnace iron making production, provide reliable judgment basis for ensuring the stable and smooth operation of the blast furnace, and can adjust the blast furnace water making amount in real time according to the flow change condition of slag, and has huge energy saving and consumption reduction benefits for the treatment of the blast furnace slag.
Drawings
FIG. 1 is a schematic structural view of an on-line blast furnace slag discharge amount measuring device according to the present invention;
FIG. 2 is a sectional view of the on-line measuring device for slag output of blast furnace slag.
Element number description:
1 slag runner working lining
2 slag runner spout
3 slag runner structure platform
4 gravity sensor
5 data acquisition system
6 data processing and display system
7 slag quantity weighing device
8 blast furnace slag
9 slag runner permanent layer
10 concrete column
11 grain slag punching box
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
In the following description, reference is made to the accompanying drawings that describe several embodiments of the application. It is to be understood that other embodiments may be utilized and that mechanical, structural, electrical, and operational changes may be made without departing from the spirit and scope of the present application. The following detailed description is not to be taken in a limiting sense, and the scope of embodiments of the present application is defined only by the claims of the issued patent. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Spatially relative terms, such as "upper," "lower," "left," "right," "lower," "below," "lower," "above," "upper," and the like, may be used herein to facilitate describing one element or feature's relationship to another element or feature as illustrated in the figures.
Although the terms first, second, etc. may be used herein to describe various elements in some instances, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, the first steering oscillation may be referred to as a second steering oscillation, and similarly, the second steering oscillation may be referred to as a first steering oscillation, without departing from the scope of the various described embodiments.
Referring to fig. 1, the utility model provides a blast furnace slag discharge on-line measuring device, please refer to fig. 2, for the utility model relates to a sectional view of a blast furnace slag discharge on-line measuring device, the detail is as follows:
the slag quantity weighing device 7 is arranged at the tail end of the blast furnace slag discharging groove and is used for weighing the weight of slag discharging in real time; wherein, a slag runner working lining is arranged on the slag quantity weighing device;
the gravity sensor 4 is arranged on a concrete or steel structure platform, and the slag quantity weighing device is arranged and suspended on the gravity sensor;
the gravity sensors can be two, so that the slag quantity weighing device can be hung below conveniently, and meanwhile, only the sum of the two gravity sensors is required when the gravity data is collected, the gravity sensors are corrosion-resistant high-precision sensors, and the measurement precision requirement is controlled within +/-10 kg.
The data acquisition system 5 is connected with the gravity sensor and is used for collecting the weight data of the change of the slag quantity weighing device in real time;
and the data processing and displaying system 6 is connected with the data acquisition system and is used for calculating and displaying the slag output and the slag output flow value of the blast furnace in real time according to the weight data of the slag output change of the blast furnace slag.
In this embodiment, the weight of the slag weighing device is detected in real time by the gravity sensor, and the weight includes the initial weight of the slag weighing device before slag discharge and the weight data (weight data in a preset sampling period) weighed by the slag weighing device after slag discharge of the blast furnace, the data processing and displaying system adopts moving average processing to weigh the weight and the initial weight, and calculates and displays the slag discharge amount and the slag discharge flow value of the blast furnace in real time, wherein the data processing and displaying system can be any one of a computer, a tablet, a palm computer, a smart phone and the like for calculating the slag weight by an installation program.
In the above embodiment, the concrete column 10 is used as a support, the concrete column is provided with a permanent channel casting material layer 9, meanwhile, a slag channel is arranged on the permanent channel casting material layer, and the tail end of the slag channel is provided with a slag channel flow nozzle 2; in addition, a concrete or steel structure platform 3 is arranged at the end 10 of the concrete column, and a gravity sensor 4 is arranged on the platform 3.
In another embodiment, the end of the blast furnace slag discharging groove is provided with a slag discharging nozzle, wherein the slag discharging nozzle is wrapped in the slag groove, and the slag discharging nozzle is arranged to facilitate the slag flowing out of the slag discharging groove to smoothly flow into the slag quantity weighing device.
In another embodiment, the end of the slag quantity weighing device far away from the slag runner spout is sealed by a steel plate and a refractory material, so as to prevent the molten slag 8 in the slag quantity weighing device 7 from flowing backwards and leaking in the slag discharging process.
In another embodiment, the slag runner working lining is provided with an anti-backflow inclined slope along the flowing direction of slag, wherein the inclined slope ranges from 1% to 3%, the backflow phenomenon of slag is prevented, and the slag can smoothly flow into a subsequent punching and granulating system.
In another embodiment, the slag quantity weighing device is separately arranged at the tail end of a slag discharging groove of the blast furnace, so long as the slag leakage phenomenon does not occur, and meanwhile, the slag quantity weighing device adopts the separation arrangement to prevent backflow leakage of the slag 8 in the slag quantity weighing device 7 in the slag discharging process and facilitate real-time weighing of the weight data of the slag flowing into the slag quantity weighing device.
In another embodiment, a granulated slag punching box 11 for granulating the molten slag is arranged below the slag weighing device 7.
In the embodiment, blast furnace slag separated from molten iron in a blast furnace through a main iron runner flows into a slag flow detection device through a slag runner flow nozzle and enters a granulated slag flushing and granulating system, high-temperature slag is flushed and granulated through slag flushing water in a flushing tank to form a slag-water mixture, steam generated in the granulating process is discharged aloft through a slag exhaust funnel, the slag-water mixture flows into a slag filtering device from the slag runner to be subjected to slag-water separation, slag obtained after filtering is transported outside through a conveying belt or an automobile, filtered hot water is cooled through a hot water pipeline cooling device through a hot water pump to form slag flushing water, and the slag flushing water is re-pumped to the flushing tank through a slag flushing water pipeline through a slag flushing pump for recycling.
In addition, the detection method of the on-line detection device for the slag discharge amount of the blast furnace slag comprises the following steps:
step S1, acquiring the initial weight of the blast furnace before slag tapping by using a slag quantity weighing device;
step S2, when the slag discharged from the blast furnace is detected, the weight data of the slag weighing device is read in real time in a preset sampling period;
and step S3, performing moving average processing on the initial weight and the weight data acquired in real time, and calculating the slag output and the slag output flow value of the blast furnace slag in real time.
In this embodiment, the initial weight of the slag weighing device collected before the slag tapping of the blast furnace and the weight data of the slag weighing device obtained by the weight sensor in the preset sampling period after the slag tapping of the blast furnace are processed by the moving average method (the interference of the weight data is eliminated by the smoothing action of averaging and moving) to obtain the slag tapping amount and the slag tapping flow value of the blast furnace slag.
The slag discharge and flow rate values of the blast furnace slag obtained by utilizing n weight data and carrying out moving average treatment on the n weight data are as follows:
in the formulae (1) and (2), m0Is the initial weight in kg; m isiT is a sampling period, t is more than or equal to n, △ t is time corresponding to n data, unit s, unit kg, GiThe flow value of the discharged slag is shown, and M is the discharged slag quantity in unit ton/min.
In other embodiments, before step S1, the method further includes:
it is right the slag runner work inside lining of slag weighing device clears up and repairs, for example, adopts the grain slag to wash the case and granulate the slag to break up the slag, refine even grain slag granularity, make the slag runner work inside lining of slag weighing device can comparatively accurately weigh the slag tap.
To sum up, the utility model discloses a set up the slag tap of the blast furnace slag volume of weighing in real time at the slag runner end to provide a slag volume and flow on-line measuring device, can solve under the multiple operating mode situation of change and effectively detect the technical problem that the blast furnace goes out slag volume and flow, can adapt to the requirement that high accuracy blast furnace goes out slag volume and flow on-line measuring under the complicated operating mode of blast furnace ironmaking production is adjusted, for guaranteeing that the blast furnace steadily moves in the same direction and provide reliable judgement foundation, and can be according to the flow variation condition of slag, can adjust the blast furnace system water yield in real time, it has huge energy saving and consumption reduction benefit to handle to blast furnace slag. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. The utility model provides a blast furnace slag output on-line measuring device which characterized in that includes:
the slag quantity weighing device is separately arranged at the tail end of the blast furnace slag discharging groove; wherein, a slag runner working lining is arranged on the slag quantity weighing device;
the gravity sensor is arranged on a concrete or steel structure platform, and the slag quantity weighing device is arranged on and suspended on the gravity sensor and used for weighing the weight of the slag in real time;
the data acquisition system is connected with the gravity sensor and is used for collecting the weight data of the slag quantity weighing device in real time;
and the data processing and displaying system is connected with the data acquisition system and is used for calculating and displaying the slag output and the slag output flow value of the blast furnace in real time according to the weight data of the slag output change of the blast furnace slag.
2. The on-line detection device for the slag discharge quantity of the blast furnace slag according to claim 1, wherein a slag runner spout is arranged at the tail end of the blast furnace slag runner.
3. The on-line detection device for the slag tapping quantity of the blast furnace slag according to claim 2, wherein the slag quantity weighing device is sealed with a refractory material by adopting a steel plate at one end far away from the slag runner nozzle.
4. The on-line detection device for the slag tapping amount of the blast furnace slag according to claim 1, wherein the working lining of the slag runner is provided with an anti-backflow inclined slope along the slag tapping flow direction.
5. The on-line detection device for the slag discharge of the blast furnace slag according to claim 1, wherein a granulated slag flushing box for granulating the slag is arranged below the slag weighing device.
6. The on-line detection device for the slag tapping amount of the blast furnace slag according to claim 5, further comprising: and the slag flushing system is connected with the granulated slag flushing box and is used for adjusting the water volume of the granulated slag flushing box according to the slag discharge and the slag discharge flow value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920446127.4U CN210945664U (en) | 2019-04-03 | 2019-04-03 | Blast furnace slag discharge on-line detection device |
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| CN201920446127.4U CN210945664U (en) | 2019-04-03 | 2019-04-03 | Blast furnace slag discharge on-line detection device |
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| CN210945664U true CN210945664U (en) | 2020-07-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109825657A (en) * | 2019-04-03 | 2019-05-31 | 中冶赛迪工程技术股份有限公司 | Blast furnace cinder slag discharge amount on-line measuring device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109825657A (en) * | 2019-04-03 | 2019-05-31 | 中冶赛迪工程技术股份有限公司 | Blast furnace cinder slag discharge amount on-line measuring device and method |
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