TW579392B - Method and device for detecting liquid level and slag location in smelter - Google Patents

Abstract

The present invention relates to a method and a device for detecting liquid level and slag location in a smelter. The detection device comprises: a plurality of probes installed on the enclosure of a smelter; a plurality of resistance detectors; and a CPU capable of receiving the output signals of all resistance detectors; in which each probe comprises a high temperature sensor capable of being moved in-and-out of the smelting space of the smelter, and a plurality of inert gas introduction devices for introducing an inert gas into the probe, in which adjacent high temperature sensors are electrically connected to a same resistance detector. The detection method sequentially comprises: a preparation step of preparing the abovementioned probes, the plurality of resistance detectors, and the CPU; a detection step of moving each high temperature sensor into the smelting space of the smelter for detecting the resistance of a relative location in the smelting space; and a signal determination step of determining the signals indicating the molten liquid level, slag and gas locations in the smelting space by using the properties that the resistance of a high temperature liquid metal is far smaller than that of the slag, and the resistance of slag is far smaller than that of the gas. Thus, an operator can monitor the variables indicating the molten liquid level and the slag location in the smelter to control the smelter at a stable state and operate the smelter at a high performance.

Description

579392 Case No. 90133395 V. Description of the invention (1) · [Field of invention] The present invention relates to a method and a device for detecting the position of metal liquid and slag in a metal smelting furnace, which can truly reflect the furnace of the metal smelting furnace The state changes, such as real-time and continuous changes in the position of the metal liquid and melting point in the metal smelting furnace, so as to achieve the effect of operating the metal smelting furnace with high efficiency. 0 [Description of Knowing Skills] General metal smelting furnaces due to The inner wall is provided with refractory material, so it is impossible to see the inside of the meter. However, in the smelting stage of the metal smelting furnace, the liquid level, slag height and thickness of the metal liquid inside it are very important during the metal smelting process. The furnace condition control variable. Taking the smelting reduction ironmaking furnace in a metal smelting furnace as an example, the molten iron in the furnace stays at the lowest level, and the slag insoluble with the molten iron stays at the upper level of the molten iron and the gas above the slag layer is gas. Phase layer. At the same time, as the production process of the smelting reduction ironmaking furnace progresses, the height of the slag layer in the furnace is bound to be higher and higher. At the same time, when the molten iron in the furnace reaches a critical height, tapping is required. , And slag discharge operation, otherwise the molten iron level in the furnace is too high, which will endanger the operation efficiency. When the slag position is lowered to the level of _iron mouth with the progress of the tapping and slag tapping operations, the tapping and slag tapping operations are stopped. Since then, the slag layer has become more and more high in the process of Ik production. This is the cyclical change of the slag in the furnace. In addition, in addition to the slag level of the slag in the furnace, the height and thickness of the slag will also reduce the reaction rate and the temperature of the furnace. The influence of factors such as the bottom blow volume of gas. Therefore, if the “slag level of the slag in the furnace is not controlled in a timely and effective manner”, the phenomenon of slag overflow is very likely to result in marriage. Melt reduction reaction furnace process production

Page 5 579392 Correction

Cover No. 9QmSQR V. Description of the invention (2) = t The abnormal operation, even when the slag overflow is serious, the smelting reduction anti-storage " is produced tightly, so if the level of molten iron can be monitored and efficient Operation can be of great help. The stability and saltiness of the W reduction ironmaking furnace is an inventor who works at China Iron and Steel Co., Ltd., and has furnace temperature variables that measure the level of molten iron and the melting height and thickness. Yes, it is based on its many years of experience in related的 工作 :: Yes ==; In the end, the present invention was finally developed. m to concentrate on research ideas [Summary of the invention] Therefore, the purpose of the present invention is to provide a liquid level that can be instant and liquid, and the height and thickness of the dross, and the metal liquid in the metal smelting furnace and the control of the furnace condition. In addition, another object of the present invention is to provide a detection device which can operate and continuously monitor the change of the furnace condition of the metal smelting furnace. s Therefore, the metal smelting furnace of the present invention is a detection method, which includes preparation, detection, inspection, and slag and slag positions in sequence: the metal smelting furnace includes a smelting, 5 tiger judgment and other steps. From the bottom to the top, they can exist in order; grain, and the smelting empty needle, and any two adjacent. High-temperature probe moving in the high-temperature shell. In addition, these detectors are more and can have one: resistance detector,

The inert gas introducer on page 6, what is lost: the inflow into the detector-the nature of the ^ t can flow in and continuously charge

Page 7 η Amendment 5 MM, 90L33395, Description of the Invention (4) 51 Object 3 2 There are high-temperature metal liquid 5, dissolved slag 6, and detection penetration 7 ^ in order. The present embodiment discloses that the number of detectors 71 that are suitable for the metal smelting furnace 10 and the Γ pair are provided on the furnace shell 11 and receive all the resistors ^, ,, and 知 71. The detection meter 72 can be connected to the central processing unit 74 'which outputs the output signal of the central processing K: 2 and the display 7 5 which can display the poor signal after each processing of σ σ 4; among them, the perforations include a filling and embedding Corresponding dioxide 711 of the metal smelting furnace 10, one can be put through the hollow body 1 in the oxide tube, and one is sighed at the small and medium corpse on the outer wall of the furnace shell U corresponding to the perforation 1U. The pneumatic cylinder 71 4 on the base 71 3 and the inert gas guide + rat that can insert October gas (such as argon oxygen, eight τ, ...,-: holes) into the mother-detector 71 The air cylinder 714 has an actuating rod 715 that can be retracted and moved on the base 713, and one end of the high temperature probe 712 is connected to the = actuating rod 715, and the other end of the high temperature probe 712 is Facing the metal smelting space 13 of the furnace 10, the high temperature probe 712 is made of a high temperature resistant ancient molybdenum metal. One end of the refining space 1 3 is a platinum coating layer 7 丨 6 which is resistant to n release and slag resistance, and every two adjacent high-temperature probes = 7 1 are electrically connected to the same resistance detector 72; The nitrogen introduction device 73 疋 can introduce nitrogen into each of the bases through the gas conveying pipe 731. Still referring to the second figure and cooperating with the first figure, the preparation step is to install all the detectors 7 described in the above detection device 7 on a metal smelter, and prepare a resistance reading tester 72 , Nitrogen true importer 73, central processing unit 74,... And display 75, and the relationship between the various components is described above. K.. I ^

579392 Amendment No. 90133395 I. The description of the fifth invention (5) W ί f ΐ ί After the setting step 1 is completed, the detection step 2 can be entered. Although the metal smelting furnace 10 controls the high-temperature metal in the human during the metal smelting process When the liquid level of liquid 5 and the height position of slag 6 are controlled, each person can-control each pneumatic cylinder 7 connected to each high temperature probe 71 2 4 4 The connected high-temperature probes 712 move until the end of each high-temperature probe 712 with a platinum coating 716 extends into the smelting space 13 of the metal smelting furnace 10 as shown in the fourth figure. The high-temperature probes 712 placed in the furnace shell U from the bottom to the top can be in contact with the high-temperature metal liquid 5, slag 6 or gas in the smelting space 13, Zhai Jun, any two adjacent high-temperature probes 712 The resistance value of the substance can be displayed by the same-detection 72 electrically connected to the two adjacent high-temperature probes 712, and the detection step 2 is completed. Finally, the signal judgment step 3 is performed, which is to transmit the resistance value signal measured by each resistance detection meter 72 to the central processing unit, and then the central processing unit 74 measures according to the foregoing each resistance detection meter 72 The obtained resistance value is based on the characteristics that the high-temperature metal liquid 5 has a resistance value that is much smaller than the resistance value of the molten slag 6, and the characteristics of the upper resistance 炼 is much smaller than the resistance value of the gas, so that the display is mn ^ corrected. 6 'and gas exist in the smelting air non-t:' So 'the operator can watch the high-temperature metal liquid 5 and dazzle 6 in the smelting air stream by watching the display 75. ^ Please refer to the third picture and cooperate筮-図 π ^ is communicated with each of the 'front ^ air ^ devices 73 nitrogen-air guides 73 through the gas pipe 731 to the' seat 713 of the nitrogen benefit 71 output from the inlet 73, so that the corresponding seat Relative to the inflow of each wheel in the wheel, ________ m is full of high temperature probe 7 1 2 and alumina tube " ll, UeiTwr, i, " j, iji · — '1 —-— 579392 correction

Case No. 90133395 V. Explanation of the invention (6) The gap between 7 1 1 can further prevent the high temperature probe 7 丨 2 from being corroded by the molten slag. On the other hand, the high temperature probe 7 丨 2 is continuously filled with nitrogen and oxidized. The gap between the aluminum pipes 7 ji can further prevent the high-temperature metal liquid 5 in the smelting space 丨 3, and the gap between the high-temperature probe 71 2 and the alumina pipe 7 丨 i penetrates into the alumina pipe 11 2 and is consolidated. . 々Recall as shown in the second and fourth figures, after the detection step 2 is completed, or the resistance value of any two adjacent high-temperature probes i 2 丨 detected by the resistance detectors 7 2, And transmit these resistance value signals to the central processing cryogenic cylinder 714, and then reverse the action, first; all high temperature probes placed in the smelting space 13 of the metal / mouth smelting furnace 10 exit the metal smelting furnace 1 〇 The smelting space 13 is also g ^ 710 than H π chen 1 2 d, that is, all high-temperature probes can be extended from the state shown in the fourth figure, back, the fire material layer 12 'So, that is, Avoid these :: Warm: Metal liquid 5 and melting 6 · Touch, it will cause doubt of dissolution and further ensure long-term operation of the detector 71. The heart, with all of the detectors 71—the pneumatic cylinder 714, the sensor 7 1 can be used for disease detection, WA g J 疋 ¥ action, and weeping and apricot β Ϊ belong to the high temperature metal liquid in the smelting furnace 10 5 and the position change of slag 6, · When Shu from the furnace 10, the furnace 、, χ $ 古 w makes the operator more able to monitor the metal temperature of the metallurgical metal 5 and the molten metal 6 Sheng 忾 slave ^ to make the metal smelting furnace 10 reach a specific position variable, as can be seen from the above-mentioned examples, the improvement of the government is as follows-it is explained that the use of the system does have 1. Effective monitoring of the metal smelting furnace The function of the furnace condition: The pressure cylinder 714 is made ^ can .....--- when the external force is different from the metal

Page 10 / Labor by the detector 71 of the present invention 579392

579392 _Case No. 90133395_ 年月 日 __ V. Description of the invention (8) The gap between the temperature probe 7 1 2 and the alumina tube 7 1 1 penetrates into the alumina tube 7 1 1 and the disadvantage of consolidation. However, the above are only the preferred embodiments of the present invention. When the scope of implementation of the present invention cannot be limited in this way, that is, equivalent changes and modifications made simply according to the scope of patent application of the present invention and the contents of the description of the invention, All should still fall within the scope of the invention patent.

Page 12 579392 Case No. 90133395 Amendment Brief description of the drawing [Simplified description of the drawing] The first drawing is a schematic flow chart showing the steps of the method for detecting the position of the metal liquid and the slag in the metal smelting furnace of the present invention. — The second figure is a schematic diagram of the j-testing device for the position of the metal liquid and slag in the metal smelting furnace of the present invention. The third figure is a partially enlarged schematic diagram of the detection device for the position of the metal liquid and slag in the metal smelting furnace of the present invention. The fourth figure is another schematic diagram of the state of the detection device 1 for the liquid metal and smelting in the metal smelting furnace of the present invention. T component label comparison] 1 Preparation step 10 Metal smelting furnace 11 Furnace shell 12 Refractory layer 1 3 Smelting space 5 Local temperature metal liquid 7 Detection device 71 Detector signal judgment step 2 Detection step: 111 perforation 6 Slag 7 1 2 High temperature probe 7 1 4 Pneumatic cylinder 7 1 6 Platinum coating 711 Alumina tube 713 Base 7 1 5 Actuator 7_2 Resistance detector 73 Nitrogen introducer 74 Central processor 7 5 Display 731 Gas tube

Page 13

Claims (1)

579392 Case No. 90133395 Patent application scope • A metal smelting furnace This metal smelting furnace is a smelting space in which perforations exist. The perforated metal smelting furnaces have a high temperature detection method in the order of preparation. Metal smelting has a temperature probe erosion that can be introduced into the probe homogenizer of the furnace shell; the detected metal can be separated from the corresponding slag obtained by the two, and the electrical and electrical connections have In the step of measuring perforation, the resistance value of the high-temperature and high-temperature probe adjacent to the smelting furnace is smelted. The resistance value is small and large, and the inner metal liquid has a furnace. The furnace shell can pass through the smelting process. The metal liquid, which contains an inert gas that is higher than the same electricity and an inert gas moving under the furnace equipped with a smelting furnace, is an electrical connection between the high-temperature probes in each smelting space, and The body and slag shell, as well as the furnace shell on the upper side, and the process of slag smelting and the following steps: Temperature probes on most electrical shells prevent the meter body from entering the probe. The detection method that can flow in and can be pre-positioned, the smelting space surrounded by the furnace shell is connected to each other. When the smelting space goes from the bottom to I and gas, its gauge and multi-detector , Each detector and any two adjacent high temperatures, in addition, the inert gas in these detectors is constantly filled with high temperature probes protected from south temperature by melting and inserted in the high temperature probes of the furnace shell ' The resistance value of the aforementioned plurality of high-temperature probes for warming liquid metal, molten slag, or gas in contact can be displayed by the same resistance tester as the resistance value of the gold liquid measured by each resistance tester. The resistance value is much smaller than ^ and the resistance value is much smaller than that of gas. Page 14 2 Scope of the patent application: The metallurgical properties such as metallurgical and metallurgical properties can be used to determine the position in high-temperature molten metal, melting, and refining spaces. ^ Ling, and the detection method of the gas in the slag position in the patent scope: f 'The metal liquid rr device in the smelting furnace further includes two = gold = smelting = step, Kong Ling's oxide tube, A hollow-shaped base body corresponding to the corresponding ridge and a ^ α tooth hole of the outer wall of the furnace shell is provided with an air chamber cylinder which can be placed on the body. The air chamber temperature probe is Put in an oxide tube :::: 疋 冶 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 从 从 从 从 从 从 回 回 回 回 回 回 回 回 皿 皿 皿 抓 抓 抓 metal smelting needle; on the rod 'and the other end of the high temperature probe is facing the corresponding high, w π : Refining space, when the pneumatic cylinder is actuated, 衧 is in continuous motion. Net brewing probe enters or exits the smelting space of the metal smelting furnace and the metal liquid probe a in the metal smelting furnace described in the first item in the range from one to one, as if = molybdenum metal with high temperature resistance "Q Qing Patent Fan Yuan metal smelting liquid as described in item 1 ^ ^ ^ SSL >, A ^ step-control" debt measurement method, in which the high temperature 4 and ^ Ge 丄 ,,, -—— one, ... / νΊ 、 服. The detection method of bearing two positions, in which, the above-mentioned intermediate signal of the detection signal of the detection device is provided. # Π & 栋 器 it 采 诒 + 二 ow_w • mail open; $ 更 备 罟 死 4 ^ ^ Management. . , Can receive the display of all the signals of the electronic P-detector, and can display the information processed by the central processing unit = ten-monitor display can display high-temperature metal liquid, slag, which is smelting Location in space. η 2 patent. The method described in item 2 is a method for detecting the position of metal in a smelting furnace ..., wherein the aforementioned preparations are performed in less than six steps, and the application ^^ »is used to correct the probe introducer. The output inert gas can flow into the gap between the tubes, and ί continuously? Filled with high temperature probes and oxidizing inscriptions. The position of idazzling position = SoΪΓ. The metal liquid in the smelting furnace 7 j belongs to the smelting space of the smelting furnace: It is the platinum coating layer of the plutonium probe located near the slag erosion. The dagger is covered with high temperature and resistance: the metal liquid in the metal smelting furnace. The metal smelting furnace is a required device with an auspicious and inspected position, the body and other substances. Resistance detectors; and most of the probes located on the furnace shell-smelting that can enter and exit the metal smelting furnace u: Detectors are provided, these detectors are more resistance detectors, and the other inert gas introduction device, The output = 丨 the body is filled into the detector and is filled between the high-temperature probe and the furnace shell: gas 5 can flow in and the probe is continuously attacked by the slag; b ',' can prevent high temperature even if the aforementioned plural High temperature contact with red, warm metal liquid, molten slag, or gas. Second, the resistance value of the high contact material in the refining space can be detected by the same resistance of the disk = ^ # 向 温 Probe junction- Measure to show the electrical connection of one or two temperature probes; and, the corresponding resistance value, then according to the high No. I.579392 Case No. I on page 16, the scope of the patent application temperature temperature metal liquid resistance is far from the metal liquid, 8 ·· If you apply The special and slag dissolving position is provided with a filling tube, a setting and a Suppose the inside of the seat body is placed on the oxygen moving rod, to make space, to extend or retract9. If you apply for special and slag level and face 1 10 · If the application body and the melt contains a-processor,-display and Gas 1 * 1 · If the resistance value of application 90133395 is less than that of gas dross, the detection range is most convenient. Most of them are embedded in metal corresponding to the telescopic and mobile aluminum tube corresponding to the base body. The metal smelting range is the first to detect the molybdenum gold patent range. The location of the slag can be accepted and the display of the display body in the patent range can be modified to be much smaller than the resistance value of the slag, the resistance value, etc. It can be judged that the location of electricity and gas in the smelting space does not belong to the metal smelting furnace described in item ^, where t, the metal :: the body has a spaced perforation; Corresponding to the perforation, the interposition on the outer wall of the perforated furnace shell is equal to the pneumatic cylinder of aluminum, the pneumatic red body, and: the moving rod, and the aforementioned each-high temperature probe = = is connected to U , Can be linked phase < smelting furnace Space. 1. The metallurgical device according to item 7 of the South Temperature Probe. The metal liquid in the basin and the chen furnace is made of "The temperature probe is made of-with the + home detection device described in item 7. The metal liquid in the furnace has resistance to be tested; The second detection device of the wheel is also included in the central processing = Central Office: Shi Ke can display high temperature metal> night, ": the smelting space. The location of China and Georgia. H Item 8 The "Liquid metal smelting furnace metal liquid" page 17 579392 _ Case No. 90133395 _ year month day _ amendment _ 6, the scope of the patent application and the slag position detection device, in which the detector is inert The inert gas output by the gas introducer can flow into the corresponding seat and continuously fill the gap between the high-temperature probe and the alumina tube, thereby preventing the high-temperature probe from being attacked by slag. 1 2 · If you apply for a patent The detecting device for the position of the metal liquid and the slag in the metal smelting furnace according to the item 9 in the scope, wherein one end of the high temperature probe located near the smelting space of the metal smelting furnace is covered with high temperature resistance and resistance to dissolution I worm's platinum coating. Page 18