TR201820934A2 - RSM (REDUCTON - SOFTENING - MELTING) FURNACE WITH DROP TEMPERATURE MEASURING INSTRUMENT WITH THE HELP OF THERMOCOUPLE - Google Patents

Abstract

The RSM furnace of the present invention has a drip temperature measurement device (100) developed to simulate the cohesive zone of blast furnaces and measure the dripping temperature over the melt with the help of a thermocouple (106). In addition, since the graphite tube (10) has a segmented structure, only the worn part is discarded and replaced with a new one. For this reason, instead of disposing of the entire inner tube, only a part of it can be discarded and replaced with a new one. Due to the use of graphite material in the inner tube and the material allows thread to be opened, the lower flange (21) and the upper flange (20) are in a threaded structure and are connected by a screwed joint.

Description

DESCRIPTION DRIP TEMPERATURE MEASURING DEVICE WITH THE AID OF THE THERMOCOUPLE OWNED RSM (REDUCTION - SOFTENING - MELTING) FURNACE Technician This invention shows that the cohesive zone of iron-containing raw materials in blast furnaces With the help of thermocouples, which are used to measure the behavior of It is about RSM (Reduction - Softening - Melting) test furnaces that measure temperature.

State of the Art Sinter, pellet and lump ore with RSM (Reduction - Softening - Melting) furnaces the so-called cohesive zone of the blast furnace (1000 - high Their behavior in the temperature zone is tested.

In the RSM test equipment developed in this context, the furnace is in the hell zone. 2 coke in the upper and lower parts into a tube (graphite or alumina) The iron ores placed as a layer of is heated and meanwhile, it will create a reductive atmosphere from the lower area of the equipment. Experimental gases are fed into the furnace and reactions are allowed to take place.

The materials charged in the blast furnace are carbon and iron-containing materials. can be divided into two. While metallurgical coke comes first among carbon-containing materials. ferrous materials; sinter. It is classified as pellet and lump ore. Both The raw materials in the group also have very different specifications and this Many different quality tests are applied to the materials. All operation of the blast furnace the region that determines the parameters of the region softening and melting events take place. is the cohesive region. This region; width, position and shape raw materials; quality, charge distribution and quantity. it is attached.

In the literature researches, generally gas tightness in test furnaces, energy consumption and waste gas heat savings, the design of the tube holding the sample chamber patents have been found. Different solutions for problems in these patents has been brought. In the patent research of the previous technique, "Iron Ore Smelting and Publication CN204226653 “Seal Element for Drip Test Equipment” No. Chinese utility model application has been found.

In this utility model document; iron ore smelting and drip testing It is mentioned that a structure used in equipment and providing impermeability.

The sealing element mentioned in the utility model; a sealed water It consists of a cooling device, a telescopic connector and a leakproof flange (6).

In the utility model, which is the subject of the invention, the operations performed in the RSM furnace are as in the previous technique. are made, but only differences are seen in the sealing elements. Another application encountered in the patent research of the prior art is China is the utility model.

In this utility model document; to determine the melting properties of iron ore compact structure, low energy consumption, good heat retention, ore estimating the melting conditions so that the temperature and regional temperature of the melting furnace It is a test with a long service time that can control the melting process curve. furnace is mentioned. In this invention, the furnace resistances are located just below the sample chamber. It is placed on the periphery and thus saves energy consumption and waste gas heat. has been made.

The working principle of the equipment is as follows. The sample is ground to 1-2 mm and Then the sample is put into the ladle (4). The loading height is around 20 - 25 mm.

The crucible (4) remains under the pressure bar (7). The swivel arm is rotated 90 degrees.

When the door aligns with the top, the pressure bar (7) moves towards the oven body (1). is suppressed. The computer (14) is started. Sample name and number are entered. Oven (1) they start to warm up. The computer (14) moves with the help of the displacement measurer (8) measure the changes. The oven (1) is gradually heated up to the determined temperature. Place When the variation meter (8) reaches the highest point, the maximum value of the sample expansion takes place. The displacement gauge (8) tries to ascend and descend to the highest point. The difference between the maximum and minimum values when the sample expansion starts is the size. Meanwhile, the thermocouple calculates the melting characteristics.

Another application encountered during the literature search is “Iron Ore It is the Chinese utility model numbered CN202066813 with the title "Temperature Detection Device from Melt".

This invention is a test that measures the temperature of the iron ore melt by melting the iron ore. relates to equipment. With the invention, only the dripping temperature of iron ores Data on parameters such as softening, melting, permeability are being measured. not produced.

In this device, iron ore is melted and as soon as the molten iron ore drops, It falls into the collection chamber below. falling into the collection chamber (11) At the time of melt dripping, it is monitored by the camera (13) and the melt temperature is detected. In addition, the gas pressure sensor measures the gas pressure at the moment of dripping. (14) is also included.

In this utility model, there is also melt in the storage chamber (11) for warning purposes. There is an alarm bell (12) that gives an alarm when it drips.

Technical Problems That the Invention Aims to Solve The present invention fulfills the above-mentioned requirements, has all the disadvantages used in blast furnaces that eliminate used to measure the cohesive zone behavior of iron-containing raw materials. The main problem that the invention aims to solve is to make the dripping temperature more practical and less measuring cost. Graphite collection instead of drip temperature measurement camera It is made with K type thermocouple placed under the chamber. In this way, more It is possible to detect the dripping temperature with low cost.

Another problem that the invention aims to solve is that the sample is placed in In order to avoid the cost disadvantage that arises as a result of the wear problem in the tubes, is to pass. For this, one-piece alumina as in the utility model CN2852121 Instead of a tube, a pieced graphite tube is used. So just asinan part will be replaced and the cost of replacing the entire tube will be saved.

Explanation of Figures Figure 1: Perspective view of the inventive RSM test furnace Figure 2: Bottom perspective view of the inventive RSM test furnace Figure 3: Detail view of the lower flange part of the RSM test furnace, which is the subject of the invention Figure 4 : Front section view of the RSM test furnace, which is the subject of the invention Figure 5 : Perspective section view of the RSM test furnace, which is the subject of the invention Figure 6 : The dripping temperature measuring device of the RSM test furnace, which is the subject of the invention perspective section view Figure 7 : The dripping temperature measuring device of the RSM test furnace, which is the subject of the invention front section view Figure 8 : Front section view of the upper flange of the RSM test furnace, which is the subject of the invention Figure 9 : Perspective view of the graphite tube of the RSM test furnace, which is the subject of the invention Figure 10 : Perspective section of the graphite tube of the RSM test furnace, which is the subject of the invention view Figure 11 : Front section view of the graphite tube of the RSM test furnace, which is the subject of the invention Figure 12 : Exploded perspective view of the graphite tube of the RSM test furnace, which is the subject of the invention Explanation of References in Figures 1 - RSM Test Furnace - Graphite Tube 11 - Upper Flange Connection 12 - 1. Hanging Part 13 - 2nd Wearable Part 14 - Spacer 1 - 2nd Spacer 16 - Sample Chamber 17 - 3rd Spacer 18 - 4. Spacer 19 - Lower Flange Connection - Upper Flange 21 - Lower Flange 24 - Flange Connector - Gas Output 26 - Upper Load Bar 27 - Lower Load Bar 28 - Lower Screen 29 - Upper Pressure Plate - Alumina Tube 40 -Weight 41 - Gear Structure 42 -Weight 43 -Weight 44 -Weight 50 - Weight Support 60 - Oven Top Cover 61 - Cover Connector 62 - Resistance Chamber 70 - Oven 71 - Refractory Chamber 80 - Mirror 81 - Clamp 82 - Tube Support Part 83 - Tube Support Connector 90 - Oven Connection Foot 91 -Foot Connector 100 - Dropping Temperature Measuring Device 101 - Thermocouple Housing 102 - Melt collection chamber 103 - Melt chamber 104 - Lower flange pin slot 105 - Blind Plug 106 - Thermocouple 110 - Gas Supply 120 - Foot Assembly 121 - Clamp 122 - Reservoir Housing 123 - Carrier Wedge Assembly 130 - Jack 140 - Graphite Tube with Thermocouple Description of the Invention In this description, the subject of the invention is to simulate the cohesive region of blast furnaces and To measure the drip temperature from the melt with the help of thermocouples (106) to the developed drip temperature measuring device (only for a better understanding of the subject and no limiting effect described in a way that does not constitute.

The invention is based on ferrous materials used in blast furnaces in the iron and steel industry. to measure the cohesive zone behavior of raw materials. RSM (Reduction - Softening - Melting) test where simulations will be performed It is related to ovens (1) and its feature is; - After the installation of the oven (TO) is completed, with different heating curves When the temperature of the sample is increased, the sample melts and drips instantly. dripping temperature measurement with the help of thermocouples (106) temperature measurement device (100).

In the RSM test furnace (1), which is the subject of the invention, the graphite tube (10) is parts exposed to wear due to contact with steel parts are easy and low. divided on the contact surfaces to allow cost-replacement It is produced as 9 pieces. Alumina tube (30) on the outside of the graphite tube (10) is located.

The graphite tube 10 consists of water parts; The uppermost part of the graphite tube (10) is the lower load. It is designed to be replaceable as a result of the wear caused by the rod (27) 1. it is a wearable part (12). 1. upper flange connection from the top of the wearing part (12) (11) is connected to the upper flange (20). On the lower side is the upper load bar (26) and can be replaced as a result of the wear caused by the lower load bar (27). The 2nd piece, which is connected by snapping into the 1st spacer piece (14) with the 1st wearable part (12) produced. wearable part (13). 1. spacer (14). 2. with spacer (15) 2. It is the part between the wearable part (13). under the 2nd spacer (15) The sample chamber (16) where the samples are placed is positioned. sample chamber Under (16), there is the 3rd spacer (17) and the 4th spacer (18). 4. spacer (18) on the lower side of the lower flange (21) to connect the graphite tube (10) with the lower flange. Thanks to this 9-piece structure, which forms the graphite tube (10), it is one piece in the previous art. from the tube structure that is produced and has to be completely replaced in case of wear. cost advantage by replacing the worn part only has been provided.

The connection of the lower flange (21) on the bottom of the graphite tube and the tube support piece (82) It is made with the help of the clamp (81) and the sealing is provided by the chuck (80). Tube The support piece (82) is the piece that fixes the alumina tube (30) and the graphite tube (10). Tube the support piece (82) to the oven bracket (90) with the tube support connector (83), Thanks to the foot connection element (91), it is connected to the foot assembly (120) on the outside. is contacted. Drip temperature measuring device (100) with tube support piece (82) clamps (121) are joined to each other.

The oven (70) is placed on the upper side of the oven (70) with the help of the door connector (61). Dust etc. into the connected resistance chamber (62). ingress of foreign matter There is an oven top cover (60) that prevents it. Thanks to the oven top cover (60) The upper part of the resistances located in the oven (70) that provides heating of the oven (70). The resistance chamber (62) with its connections is protected from foreign materials. and possible malfunctions are prevented.

At the bottom of the furnace (70), the graphite melt chamber (103) is placed in the chamber housing (122). Melt collection chamber, which allows the collection of the melted sample by placing it (102) is positioned. On the underside of the melt collecting chamber (102) There is a thermocouple socket (101) where the thermocouple (106) is placed. thermocouple on both sides of the socket (101), the lower flange pin connecting with the lower flange (21) slot (104) is positioned. If on the outside of the pin slots (104) In the event of a measurement problem with the thermocouple (106) or a double-control measurement In order to be able to make measurements with the camera when it is desired to be done, a blind plug (105) is placed.

The test process in the RSM test furnace is as follows; The samples are made of graphite in the central region of the furnace (70), called the hell zone. Graphite lower sieve (28) and upper compression plate (29) inside the sample chamber (16) is positioned between Samples are placed in the graphite sample chamber (16). It is placed outside the oven (70) and then the parts are assembled to each other. are combined.

After the Graphite Tube (10) is combined, the outer side is refractory so that the heat does not leak. It is inserted into the alumina tube (30) in the oven (70) designed with its chamber (71). is placed. Then, the upper load bar (26) is inserted into the graphite tube (10). lower load rod (27) and graphite tube thermocouple (140) are mounted. After this process The upper flange connection (11) and the steel upper flange (20) are connected to each other by screwing. is connecting. Then on the upper flange; flange consisting of chuck (80) and clamp (81) The load to which the materials are exposed in the blast furnace process is placed on the sample. is being implemented. Weights (40. 42, 43, 44) are divided to be carried by human power. It is in structure and on the underside of the weights (40, 42, 43, 44) it is the weight that transmits the weight to the oven. support (50) is included. Thus, the pressure in the blast furnace is simulated by these weights. it will be done.

Mounting the hopper cover (122) with the help of the mounting bracket (123) jack It is done with (130). After the assembly of the oven (70) is completed, different heating The temperature of the sample is increased from room temperature to 1500 0C with curves. This Reaching the temperature takes a period of 6-8 hours depending on the desired test conditions. takes. The gases containing N2, CO, CO2 and Hz were different at different stages of the experiment. The furnace (70) is fed with gas supply (110) in proportions. fed gases, by reacting with the test sample in the sample chamber, in the upper flange (20) it is discharged from the gas outlet (25).

Examination of measured data from pressure transmitters installed in gas lines softening in the sample with the effect of increasing temperature and reductive gases and melting temperatures are determined. Also mounted on weight (43) With the displacement measuring device, the % shrinkage amount of the bed is determined.

With the thermocouple (106) to be placed in the thermocouple socket (101), the sample The drip temperature is measured. of the inlet and outlet gases measured by the gas analyzer. % reduction amount of the sample with the data obtained from the compositions being measured.

During the 5-8 hour test in the RSM test furnace (1), high temperature, pressure and graphite tube (10) exposed to corrosive gases, high-cost alumina-based Graphite material formed by combining multiple parts instead of refractory has been made. In this way, both the test conditions and the contact with the steel parts parts exposed to abrasion due to easy and low cost. is provided to be changed. Also, unlike alumina inner tubes, graphite tube (10) on the upper flange (20) and lower flange (21) as it is possible to thread on As it is, the outside is opened and the relatively high pressure test gases leak out of the inner tube has also been largely prevented.

Since the upper part of the graphite tube (10) is assembled with the upper flange connector (24). After the test, without the need for a lifting system, the sample can be easily baked in the oven (70). can be taken out. The flange connection element (24) has a mirror and clamp structure.

The weight of the equipment and the applied load, the oven (70) foot assembly (120) tube support part (82) and the lower flange (21). In this way, the experiment Before entering both the sample chamber (16) and the molten material into the furnace (70). it is practically possible to place it in the oven and take it out can be done.

The drip temperature measurement is under the graphite melt chamber (103) instead of the camera. with the K type thermocouple (106) placed in the thermocouple socket (101) is being done. In this way, drip temperature detection with lower cost can be done. Also in the lower compartment to prevent the camera from overheating. The need for the applied water cooling system has also been eliminated.

In this way, the risk of thermal shock on the high-cost outer alumina tube (30) As it is removed, the diameter of the alumina tube (30) can be increased. With alumina tube (30) It is possible to increase the diameter of the graphite tube (1), allowing the sample chamber to reach 75 mm. width and as a result a maximum of 15 mm It has been possible to test iron ores of different sizes.

This situation is used in blast furnaces; iron such as pellets, sinter and lump ore Testing of raw materials containing more realistic dimensions (without breaking) made possible.

How the Invention is Applied to Sanavi This invention is based on ferrous materials used in blast furnaces in the iron and steel industry. to measure the cohesive zone behavior of raw materials. RSM (Reduction - Softening - lVIelting) test where simulations will be performed ovens (1) will be used.

Claims (7)

REQUESTS 1. The invention is based on the RSM (Reduction - Softening - Melting) test furnace, in which simulations will be made to measure the cohesive zone behavior of ferrous raw materials used in blast furnaces in the iron and steel industry - After the assembly of the furnace (70) is completed, when the temperature of the sample is increased with different heating curves and the temperature of the sample is increased. It contains a drip temperature measurement device (100) that measures the dripping temperature with the help of thermocouples (106) at the time of dripping. 2. It is an RSM test furnace (1) as in Claim 1, and its feature is; the said drip temperature measuring device (100) includes a melt chamber (103) surrounding the drip temperature device, the melt collecting chamber (102) in which the sample is collected as it drops, the thermocouple housing (101) in which the said thermocouple (106) is placed. 3. It is an RSM test furnace (1) as in claim 1 or 2, and its feature is; said dripping temperature measuring device (100) includes a blind plug (105). 4. It is an RSM test furnace (1) as in Claim 1, 2 or 3, and its feature is; its inner tube is a graphite tube (10) made of graphite material. 5. It is an RSM test furnace (1) as in Claim 1, 2, 3 or 4, and its feature is; It consists of a 9-piece graphite tube (10) divided into one piece on all contact surfaces. 6. It is an RSM test furnace (1) as in Claim 5, and its feature is; said 9-piece graphite tube (10) contains upper flange connection (11), 1st wearable part (12), 2nd wearable part spacer (18), lower flange connection (19). 7. It is an RSM test furnace (1) as in Claim 1, 2, 3, 4, 5 or 6, and its feature is; said graphite tube (10) is connected with the flange connection element (24) by opening the lower flange (21) and the upper flange (20).