CN212410353U - Visual sintering process comprehensive detection device - Google Patents
Visual sintering process comprehensive detection device Download PDFInfo
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- CN212410353U CN212410353U CN202020705089.2U CN202020705089U CN212410353U CN 212410353 U CN212410353 U CN 212410353U CN 202020705089 U CN202020705089 U CN 202020705089U CN 212410353 U CN212410353 U CN 212410353U
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Abstract
The utility model provides a visual sintering process comprehensive testing device belongs to sintering technical field. The device includes visual sintering cup system, each area test system of visual sintering process, temperature check system and visual sintering process flue gas test system, wherein, each area test system of visual sintering process is including sintering mineral forming area, burning zone, preheating drying area and wet area, and the temperature check system includes upper thermocouple, middle level thermocouple, lower floor's thermocouple and collector, and visual sintering process flue gas test system includes flue gas analysis device, infrared analyzer and high definition video recorder. The device has the advantages of visual measurement method, comprehensive analysis of multiple detection means, testing and storage of all the detection means from sintering ignition to sintering end point, strong systematicness and comprehensive analysis and judgment.
Description
Technical Field
The utility model relates to a sintering technology field especially indicates a visual sintering process comprehensive testing device.
Background
The sintering and agglomeration process of iron ore powder is carried out by mixing mixed ore powder with flux, fuel and water, and high-temperature high-pressure roasting. In the roasting process, because of the mechanical movement of high temperature and high pressure and the material shrinkage, the parameter system detection in the sintering process is difficult, and the whole sintering process is also regarded as a black box. The utility model discloses this black box will be opened to visual sintering process. The sintering process mainly comprises four basic theoretical compositions: 1) the combustion of the solid fuel in the sintering process is researched by adopting the basic theory of chemical reaction kinetics; 2) the basic theory of heat transfer researches the temperature distribution and the heat storage phenomenon in the sintering process; 3) analyzing the air permeability and the process parameters of the material layer by using a pneumatic theory; 4) the basic theories of metallurgy thermodynamics and mineral engineering are applied to research the solid-phase reaction, the liquid-phase formation and the ore forming mechanism of the sinter in the sintering process. Grate bars from the upper charge level to the lower end of the sintering machine are divided into 5 bands in sequence: respectively a mineral forming zone, a combustion zone, a drying preheating zone, an over-wet zone and a raw material zone. The utility model discloses what focus was studied is the change law in sintering process in wet area, dry preheating zone and burning zone.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a visual sintering process comprehensive testing device. Specifically, the test device is a visual sintering cup with a black box opened in the sintering process, basic data of the sintering process are continuously measured, such as the width of a drying preheating zone, the width of a combustion zone and the migration rule of each zone along with the change of sintering time in the sintering cup are directly measured, and the gas-solid reaction of fuel and the release rule of pollutants are analyzed by combining a sintering flue gas analysis system.
The device comprises a visual sintering cup body, a bottom paving material and grate bars, a sealing device, an ash collecting hopper, a collector, a sintering waste gas testing hole, a smoke gas analyzing device, a steel plate ruler, an air exhaust pipeline, an infrared analyzer and a high-definition video recorder, wherein the bottom paving material and the grate bars, a raw material, a wetting zone, a preheating and drying zone, a combustion zone and a sintered ore zone are sequentially arranged in the visual sintering cup body from bottom to top, an upper-layer thermocouple is arranged in the sintered ore zone, a middle-layer thermocouple is arranged in the combustion zone, a lower-layer thermocouple is arranged in the raw material, the middle-layer thermocouple and the lower-layer thermocouple of the upper-layer thermocouple are connected with the collector, the visual sintering cup body is arranged in a sealing sleeve, the bottom is sealed through the sealing device, the steel plate ruler is arranged on one side of the visual sintering cup body, the ash collecting hopper is arranged on the lower portion of the, the dust collecting hopper is connected with the air draft pipeline, and the infrared analyzer and the high-definition video recorder are arranged on one side of the steel plate ruler of the device for analyzing and recording video.
The visual sintering cup body is made of heat-resistant quartz glass and is provided with temperature measuring holes, the thickness of the visual sintering cup body is 3mm-8mm, the height of the visual sintering cup body is 700mm-1000mm, the diameter of the visual sintering cup body is 140mm-200mm, and the number of the temperature measuring holes is 3-5.
The detection device has two modes of temperature measurement, one mode is that a thermocouple measures temperature in a material layer, and the other mode is that an infrared analyzer images and measures temperature.
The utility model discloses an above-mentioned technical scheme's beneficial effect as follows:
the device has the advantages that the measurement method is visual, multiple detection means are comprehensively analyzed, and all the detection means are tested and stored in a whole process from sintering ignition to sintering end point. The method has the characteristics of multiple angles, strong systematicness and comprehensive analysis and judgment.
The concrete points are as follows:
(1) the utility model is a visual sintering cup system, which comprehensively analyzes the change rule of the sintering process;
(2) the utility model carries out systematic detection on the basic data of thermodynamics and gas dynamics in the sintering process;
(3) repeatedly knocking on the aspects of analysis precision and accuracy, particularly the matching use of an infrared analyzer and a thermocouple.
Drawings
Fig. 1 is a schematic structural diagram of the detection device of the present invention.
Wherein: 1-visual sintering cup body, 2-sintering mineral forming belt, 3-combustion belt, 4-preheating drying belt, 5-overwetting belt, 6-raw material, 7-bedding material and grate, 8-sealing device, 9-ash collecting bucket, 10-upper thermocouple, 11-middle thermocouple, 12-lower thermocouple, 13-collector, 14-sintering waste gas testing hole, 15-flue gas analyzing device, 16-steel plate ruler, 17-air exhaust pipeline, 18-infrared analyzer and 19-high definition video recorder.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The utility model provides a visual sintering process comprehensive testing device.
As shown in fig. 1, the device comprises a visual sintering cup body 1, a bottom laying material and grate 7, a sealing device 8, an ash collecting hopper 9, a collector 13, a sintering waste gas test hole 14, a flue gas analysis device 15, a steel plate ruler 16, an air exhaust pipeline 17, an infrared analyzer 18 and a high-definition video recorder 19, wherein the visual sintering cup body 1 is internally provided with the bottom laying material and grate 7, a raw material 6, an over-wet belt 5, a preheating and drying belt 4, a combustion belt 3 and a sintering mineral belt 2 from bottom to top in sequence, an upper thermocouple 10 is arranged in the sintering mineral belt 2, a middle thermocouple 11 is arranged in the combustion belt 3, a lower thermocouple 12 is arranged in the raw material 6, the middle thermocouple 11 and the lower thermocouple 12 of the upper thermocouple 10 are connected with the collector 13, the visual sintering cup body 1 is arranged in a sealing sleeve, the bottom is sealed by the sealing device 8, the steel plate ruler 16 is arranged on one side of the, the lower part of the sealing device 8 is provided with an ash collecting hopper 9, the ash collecting hopper 9 is provided with a sintering waste gas test hole 14, the sintering waste gas test hole 14 is connected with a flue gas analysis device 15, the sintering waste gas test hole 14 is connected with an air draft pipeline 17, and an infrared analyzer 18 and a high-definition video recorder 19 are arranged on one side of a steel plate ruler 16 of the device for analyzing and recording video.
The visual sintering cup body 1 is made of heat-resistant quartz glass and is provided with temperature measuring holes, the thickness of the visual sintering cup body 1 is 3mm-8mm, the height of the visual sintering cup body is 700mm-1000mm, the diameter of the visual sintering cup body is 140mm-200mm, and the number of the temperature measuring holes is 3-5.
The temperature of the detection device is measured in two modes, one mode is that a thermocouple measures temperature in a material layer, and the other mode is that an infrared analyzer 18 performs imaging temperature measurement.
The following description is given with reference to specific examples.
In the sintering process, the factors influencing the sintering process include raw fuel factors: mineral powder types and related collocation, water, flux, fuel types, addition amount and granularity; change of sintering parameters: air draft area, air volume, air pressure, ignition temperature and the like. The experimental device can analyze and judge the reasonability of the sintering process, and further achieves the purpose of optimizing sintering production.
The device comprises the following specific experimental steps:
(1) the visual sintering cup body with the temperature measuring hole is placed in a sealing sleeve, bottom sealing is carried out by adopting a sealing device 8, the height and the diameter of the visual sintering cup are set according to actual setting, and the height and the diameter of the visual sintering cup are set to be 800mm and 160mm in the experiment;
(2) carrying out material preparation in a sintering cup, mixing uniformly in a first mixing mode, and granulating in a second mixing mode;
(3) weighing the second mixed material, and testing the water content and the granularity composition of the mixed material;
(4) filling and paving a bottom material, performing visual sintering cup material distribution, and embedding a temperature thermocouple into a visual sintering cup material layer along with the height of a material layer in the material distribution process;
(5) weighing the mass of the residual mixed material after distribution, and calculating the mass of the mixed material entering the furnace;
(6) debugging a flue gas analysis system, and calibrating pressure, temperature and components normally;
(7) placing a steel plate ruler on one side of a visual sintering cup, debugging sintering process testing equipment such as an infrared analyzer and a high-definition video recorder and the like, and ensuring that all sampling, detecting and analyzing equipment are normal;
(8) visual sintering test ignition, wherein a sintering ignition system is established according to the requirements of required process conditions, the ignition negative pressure is 6-10 kpa, and the ignition time is 90-150 s; then adjusting to sintering negative pressure, 8-14 kpa, fully automatically testing the temperature, smoke composition and pressure of each point of the material layer, high-definition shooting and image, thermal imaging and storing;
(9) when the sintering end point is reached, recording the sintering end point temperature and the sintering end point time, weighing the mass of the sintering ore after the end point temperature is cooled to 200 ℃, and measuring the burning loss of the sintering ore;
(10) performing a falling test and a screening test, wherein the screening grain size is less than 5mm, 5-10mm, 10-25mm and more than 25 mm;
(11) carrying out a sinter drum test;
(12) after the test is finished, data analysis is carried out, including sintering cup parameter calculation, such as yield, sintering utilization coefficient, vertical sintering rate, sintering energy consumption and the like, and a visual sintering test system, such as change rule of each belt, change rule of smoke components, material layer temperature and the like.
In the above scheme, the test temperature has two forms: the thermocouple measures temperature in the material layer and the thermal imager measures temperature in an imaging manner, the thermal imager measures the temperature of a visual sintering cup body or cup wall, a large number of experiments show that if the single-layer high-temperature-resistant quartz glass is 5mm, the temperature of the cup body is up to 500-700 ℃, and the thermocouple in the material layer corrects the temperature of the thermal imager, so that the temperature of the thermal imager is more accurate; the moving speed of each belt can be clearly analyzed by combining a thermal imager and a high-definition camera with a steel plate ruler; a sintering waste gas measuring device which can also analyze CO in the sintering process2，CO，SO2，NOXThe rule of precipitation can be analyzed at the same time2The relationship of the changes.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (2)
1. The utility model provides a visual sintering process comprehensive testing device which characterized in that: comprises a visual sintering cup body (1), a bottom laying material and grate (7), a sealing device (8), an ash collecting hopper (9), a collector (13), a sintering waste gas test hole (14), a flue gas analysis device (15), a steel plate ruler (16), an air exhaust pipeline (17), an infrared analyzer (18) and a high-definition video recorder (19), wherein the visual sintering cup body (1) is internally provided with the bottom laying material and grate (7), a raw material (6), a wetting zone (5), a preheating drying zone (4), a burning zone (3) and a sintering mineral forming zone (2) from bottom to top in sequence, an upper thermocouple (10) is arranged in the sintering mineral forming zone (2), a middle thermocouple (11) is arranged in the burning zone (3), a lower thermocouple (12) is arranged in the raw material (6), and the upper thermocouple (10), the middle thermocouple (11) and the lower thermocouple (12) are connected with the collector (13), the seal cover is arranged in visual sintering cup (1), the bottom is sealed through sealing device (8), visual sintering cup (1) one side sets up steel plate chi (16), sealing device (8) lower part sets up ash collecting hopper (9), set up sintering exhaust gas test hole (14) on ash collecting hopper (9), flue gas analytical equipment (15) is connected in sintering exhaust gas test hole (14), ash collecting hopper (9) link to each other with exhaust duct (17), infrared analyzer (18) and high definition video recorder (19) are arranged steel plate chi (16) one side in and are used for analysis and video recording.
2. The visual sintering process comprehensive detection device according to claim 1, characterized in that: the visual sintering cup body (1) is made of heat-resistant quartz glass and is provided with temperature measuring holes, the thickness of the visual sintering cup body (1) is 3-8 mm, the height of the visual sintering cup body is 700-1000 mm, the diameter of the visual sintering cup body is 140-200 mm, and the number of the temperature measuring holes is 3-5.
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| CN202020705089.2U CN212410353U (en) | 2020-04-30 | 2020-04-30 | Visual sintering process comprehensive detection device |
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| CN202020705089.2U CN212410353U (en) | 2020-04-30 | 2020-04-30 | Visual sintering process comprehensive detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567486A (en) * | 2021-07-26 | 2021-10-29 | 中南大学 | Sintering test method and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567486A (en) * | 2021-07-26 | 2021-10-29 | 中南大学 | Sintering test method and system |
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