JP2016057149A - High-temperature property evaluation test device for ore - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high-temperature property evaluation test device for ore capable of measurement well reflecting the state in a blast furnace in consideration of a phenomenon in which gas is distributed into a coke layer having excellent ventilation which is cased by ventilation aggravation in an ore layer.SOLUTION: A high-temperature property evaluation test device for ore has: a heating furnace for holding at a prescribed temperature, a container made of carbon capable of filling the ore, and having a gas circulation port on a bottom part; a gas supply device for supplying gas into the container made of carbon; a main route for circulating supplied gas through the inside of the container made of carbon, and a bypass route for circulating the gas after bypassing the container made of carbon; and a ventilation resistance adjusting device provided on the bypass route.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an ore high-temperature property evaluation test apparatus for evaluating the high-temperature property related to the behavior of ore used in a blast furnace or the like in the blast furnace.

  The blast furnace is a huge counter-current moving bed reactor, which is charged with iron ore and sintered ore or coke and coke from the top of the furnace, and the coke is burned by hot air blown from the tuyeres at the bottom of the furnace. The iron oxide in the iron raw material is melted and reduced with the reducing gas containing CO produced to produce pig iron. In recent years, there is an increase in the quality of raw materials used, in particular, raw materials with a low reduction rate of gas reduction at the blast furnace shaft portion and low reducibility. When such a low reducible raw material is used in a blast furnace, the raw material descends in the furnace and reaches a region called a fusion zone, which is a region accompanied by softening and melting in a temperature range of 1000 ° C. or higher. In addition, since the reduction rate of gas reduction is slow, the reduction rate of the raw material is low, and the phenomenon that the softening and shrinkage of the raw material become apt to occur easily occurs. In such a state, it is considered that the gap of the cohesive zone becomes smaller and the ventilation resistance increases.

In the cohesive zone, when the ventilation resistance of the ore layer is increased by softening and melting of the ore, it is suppressed that the ventilation resistance of the cohesive zone is significantly increased due to gas flowing into the coke layer called coke slit. And if more gas is distributed to the coke layer due to the increase of the ventilation resistance of the ore layer, the amount of gas flowing to the coke layer will increase and the gas flow rate will increase. It is thought to cause an increase in pressure loss.
For this reason, in order to maintain the air permeability of the blast furnace and achieve stable operation, it is considered effective to accurately grasp in advance the high-temperature properties of the ores charged in the furnace. Therefore, conventionally, for example, as shown in Non-Patent Document 1 and Patent Document 1, a load for reducing with a reducing gas containing CO in a state where a load is applied while raising the temperature in order to measure the high-temperature properties of the ore. A softening test is being conducted.

JP-A-8-189926

“Method of measuring high temperature properties of blast furnace charge”, Iron and Steel, Vol. 66 (1980), p. 1850-1858

  However, the conventional ore high temperature property evaluation test method disclosed in Non-Patent Document 1 and Patent Document 1 has a structure in which gas flows unilaterally from the lower part of the ore layer installed in the carbon container. Even if it becomes difficult for the gas to flow through the ore layer due to a decrease in the porosity of the ore layer caused by softening and melting of the ore, the gas forcibly flows through the ore layer. Therefore, the increase in gas distribution to the coke layer and the decrease in the amount of gas flowing to the cohesive zone due to the deterioration of the ore layer ventilation in the actual blast furnace cohesive zone cannot be reproduced, and the gas flow in the blast furnace is It is not a high-temperature property evaluation test method for ores under exactly simulated conditions.

  Therefore, an object of the present invention is to take into account the phenomenon of gas distribution to a coke layer with good ventilation as the ore layer deteriorates in ventilation, and to measure the high temperature property of ore that can reflect the situation in the blast furnace well Is to provide.

The features of the present invention for solving such problems are as follows.
(1) A carbon container that can be filled with ore and has a gas distribution port at the bottom, and a carbon push rod that can apply a load to the ore filled in the carbon container from above, A heating furnace that holds the container and the carbon push rod at a predetermined temperature; a gas supply device that supplies a gas of a predetermined composition into the carbon container from a flow port at the bottom thereof; and a gas supply device that is supplied from the gas supply device. A main gas path through which the supplied gas flows in the carbon container, a bypass path through which the supplied gas bypasses the carbon container, and the main path Provided on the upstream and downstream sides of the carbon container, respectively, the pressure of the gas supplied from the bottom into the carbon container and the upper part of the carbon container are exhausted. Two pressure gauge for measuring the pressure of the gas, characterized by having a a ventilation resistance adjusting device provided in the bypass passage, the high temperature property evaluation test apparatus ore.

  (2) The ore high-temperature property evaluation test apparatus according to (1), further including a gas analyzer that analyzes gas discharged from an upper portion of the carbon container, wherein the main path is: A gas flow path from the gas supply device to the gas analysis device through the carbon container, and the bypass route bypasses the gas supply device from the gas supply device to the gas analysis device. An ore high-temperature property evaluation test apparatus, characterized by being a gas distribution channel.

  (3) The ore high-temperature property evaluation test apparatus according to (1) or (2), further including a ventilation resistance adjusting device provided on the downstream side of the carbon container in the main path. A high-temperature property evaluation test system for ores.

  According to the present invention configured as described above, a test capable of evaluating the high-temperature properties of the ore under an environment in which the in-furnace state of the blast furnace is more accurately reproduced is possible, which contributes to stable operation of the blast furnace. it can.

It is a cross-sectional schematic diagram of one Embodiment of the high temperature property evaluation test apparatus of the ore based on this invention. (A), (B), and (C) are graphs showing examples of test conditions for the gas composition, temperature, and load of the high-temperature property evaluation test apparatus for ore shown in FIG. 1, respectively. It is a rough which shows the relative value of the maximum differential pressure | voltage for every ore from which a property mutually differs measured in the Example of this invention. It is a graph which shows the relative value of the largest differential pressure | voltage for every ore from which a property mutually differs measured in the comparative example. It is a cross-sectional schematic diagram of other embodiment of the high temperature property evaluation test apparatus of the ore which concerns on this invention.

FIG. 1 is a schematic cross-sectional view of an embodiment of an ore high-temperature property evaluation test apparatus according to the present invention.
As shown in the figure, an ore high-temperature property evaluation test apparatus (hereinafter simply referred to as a test apparatus) 1 according to the present invention includes a heating furnace part 2 having a heating furnace 4 and a flow path through which gas flows in parallel to the heating furnace 4. And a bypass portion 3 having
In the heating furnace portion 3, a carbon container 6 filled with ore 5 such as sintered ore can be installed in the heating furnace 4, and the ore 5 installed in the carbon container 5 is converted into the ore 5 with the carbon push rod 7. While applying a load L, the apparatus is configured by a device that circulates a reducing gas, for example, a N ₂ / CO / CO ₂ / H ₂ mixed gas having a predetermined composition.

Here, as shown in FIG. 1, the heating furnace 4 has a cylindrical outer shape, and has a heat resistance for accommodating a cylindrical carbon container 6 installed in the center, for example, a graphite crucible, for example, A cylindrical core tube 8 made of refractory, a heater 9 covering the outer periphery of the core tube 8, and a bottom 6a of the carbon vessel 6, and having heat resistance such as alumina that communicates with the gas flow port 6b of the bottom 6a. It is an electric furnace having a cylindrical reaction tube 10 made of refractory such as. The ore layer 5 in the carbon container 6 is loaded with a load L via a carbon push rod 7 by a load applying device (not shown).
In the present invention, the filling form and filling method of the ore 5 into the carbon container 6 are not particularly limited, and as disclosed in Non-Patent Document 1, the upper and lower sides of the ore sample layer are made of coke or carbon (graphite). ) It may be a filling structure sandwiched between layers of particles, and as disclosed in Patent Document 1, the upper and lower sides of the ore layer are sandwiched between ceramic ball layers, and the inner peripheral wall of the carbon container 6 and the outer periphery of the ore layer It may be a filling structure in which fibrous ceramics are sandwiched between them, a filling structure in which the upper and lower sides of the ore layer are sandwiched between coke layers, or a structure in which carbon particles are coated on the ore layer of such a filling structure Alternatively, any conventionally known ore filling structure and filling method may be applied.

  The heating furnace 4 is preferably provided with a temperature control device 11 for controlling the temperature of the heating furnace 4, that is, the temperature of the heater 9. A thermometer 12 for measuring the temperature of the heater 9 is connected to the temperature control device 11, and the temperature control device 11 gives energy (current) to the heater 9 according to the temperature of the heater 9 measured by the thermometer 12. , Voltage) to control the temperature of the heater 9, and thus the heating furnace 4. Thus, the heating furnace 4 is maintained at a predetermined temperature, and the carbon container 6 and the carbon push rod 7 are maintained at a predetermined temperature.

On the gas inlet side of the heating furnace 4, a gas supply device 13 capable of flowing a reducing gas (N ₂ / CO / CO ₂ / H ₂ mixed gas having a predetermined composition) at a predetermined flow rate is installed. On the gas outlet side of the heating furnace 4, a gas analyzer 14 for continuously analyzing the composition of the exhaust gas after the ore reduction (for example, N ₂ / CO / CO ₂ / H ₂ mixed gas) is installed. Preferably it is.
Here, if the gas analyzer 14 can continuously analyze the composition of the gas, particularly the composition of the exhaust gas, for example, the composition of the N ₂ / CO / CO ₂ / H ₂ mixed gas, particularly the composition of CO / CO _2. Any of these may be used, and examples thereof include an infrared gas analyzer.

For example, although not shown, the gas supply device 13 mixes a gas cylinder constituting a reducing gas such as an N ₂ gas cylinder, a CO gas cylinder, a CO ₂ gas cylinder, and an H ₂ gas cylinder, and various gases in these gas cylinders. A mixer (mixer) is provided, and a reducing gas having a predetermined composition is adjusted and supplied into the heating furnace 4. The gas supply device 13 may be any device as long as it can supply a reducing gas having a predetermined composition into the heating furnace 4. For example, the gas supply device 13 includes a gas cylinder that supplies a mixed gas whose gas composition has been adjusted in advance from the beginning. Also good. Moreover, it is preferable that the gas supply device 13 includes a gas analyzer for measuring the composition of the reducing gas in which a plurality of kinds of gases are mixed to adjust the composition. The gas analyzer 14 on the gas outlet side may be shared as the gas analyzer of the gas supply device 13.

In the illustrated example, a reducing gas inlet 15 communicating with the inside of the reaction tube 10 from the lower portion is provided in the lower portion of the heating furnace 4. The reducing gas inlet 15 and the gas supply device 13 are connected by an inlet side pipe 16. Thus, the reducing gas having a predetermined composition supplied from the gas supply device 13 passes through the inlet side pipe 16, enters the reaction tube 10 in the heating furnace 4 from the reducing gas inlet 15, and gas in the bottom 6 a of the carbon container 6. The CO gas or H ₂ gas in the reducing gas enters the carbon container 6 through the circulation port 6b, is filled in the carbon container 6, and is heated by the heater 9 to reduce the ore 5 that has been melted. While producing molten pig iron, it is oxidized and becomes CO ₂ gas and H ₂ O gas.

On the other hand, an exhaust gas outlet 17 communicating with the inside of the furnace core tube 8 from the upper part is provided at the upper part of the heating furnace 4. The exhaust gas outlet 17 and the gas analyzer 14 are connected by an outlet side pipe 18. In this way, the ore 5 is reduced in the carbon vessel 6 in the heating furnace 4, the content of CO gas or H ₂ gas in the reducing gas is decreased, and the content of CO ₂ gas or the like is increased. The mixed gas flows from the upper part of the carbon container 6, for example, through holes 7 b provided in the pressing part 7 a at the tip of the carbon push bar 7, the upper part of the carbon container 6, and the pressing part of the carbon push bar 7. Enters the core tube 8 through a gap between them, and is discharged from the exhaust gas outlet 17 to the outlet pipe 18 as exhaust gas. Thereafter, the exhaust gas enters the gas analyzer 14 from the outlet pipe 18, and the composition of the exhaust gas is analyzed by the gas analyzer 14.
From the above, the inlet side pipe 16, the reaction tube 10 and the core tube 8 in the heating furnace 4, and the outlet side pipe 18 are made of gas for circulating a reducing gas having a predetermined composition supplied from the gas supply device 13. It is a distribution path, and constitutes a main path 19 through which the supplied reducing gas flows in the carbon container 5.

  Further, in order to measure the differential pressure between the pressure P11 of the reducing gas supplied into the carbon container 6 and the pressure P12 of the exhaust gas discharged from the upper part of the carbon container 6, the reducing gas inlet 15 of the inlet pipe 16 is measured. And two pressure gauges 20 and 21 for measuring the pressure P11 of the reducing gas and the pressure P12 of the exhaust gas, respectively, are provided at positions near the exhaust gas outlet 17 of the outlet pipe 18. preferable. Here, the two pressure gauges 20 and 21 constitute a differential pressure measuring unit that measures a differential pressure between the pressure P11 of the reducing gas and the pressure P12 of the exhaust gas discharged from the upper part of the carbon container 6. Here, the pressure P11 of the reducing gas and the pressure P12 of the exhaust gas are measured using the two pressure gauges 20 and 21, respectively, and the pressure difference between them, that is, the differential pressure (P11-P12) is obtained. A differential pressure gauge may be provided between the position near the 16 reducing gas inlets 15 and the position near the exhaust gas outlet 17 of the outlet pipe 18 to directly determine the pressure difference (P11-P12).

Also, at the lower part of the heating furnace 4, a drop sampling device 22 is installed for recovering drops melted down from the carbon container 6, for example, molten pig iron and molten slag produced by melting ore reduction. It is preferable that The dripping material sampling device 22 includes, for example, a water-cooled turntable 22a as shown in the drawing, and molten pig iron, molten slag, and the like melted down from the gas flow port 6b of the bottom 6a of the carbon container 6. The melted dripping material falls in the reaction tube 10 and is collected on the turntable 22a.
Although not shown, the inlet side pipe 16 is provided with a gas preheating furnace (up to 600 ° C.) for preheating the inlet side reducing gas and an inlet side flow meter for measuring the flow rate of the inlet side reducing gas. The outlet side pipe 18 may be provided with a cooler for cooling the outlet side exhaust gas, for example, a water cooler or an outlet side flow meter for measuring the flow rate of the outlet side exhaust gas. good.

  Here, the temperature control device 11, the gas, including the configuration of the heating furnace 4 of the heating furnace portion 3, the carbon container 6, the carbon push rod 7, the gas supply device 13, and the main path 19 as a gas distribution path. The above-described various components such as the analysis device 14, the two pressure gauges 20, 21 and the drop sampling device 22 are not particularly limited in the present invention, and are conventionally known high-temperature property evaluation test devices or conventionally known devices. The structure and configuration of a test apparatus or the like for evaluating the high-temperature properties of the test apparatus may be applied. For example, the structure or configuration of a test apparatus or the like for performing a high-temperature property measurement method as disclosed in Non-Patent Document 1 It may be applied.

The bypass portion 3 is a flow path for the reducing gas supplied from the gas supply device 13, and a part of the reducing gas supplied from the gas supply device 13 circulates bypassing the carbon container 6, and thus the heating furnace 4. The bypass path 23 is configured to include a branch pipe 24, branched from the reducing gas inlet pipe 16 entering the heating furnace 4, and installed to join the exhaust gas outlet pipe 18 discharged from the heating furnace 4. Yes.
In the illustrated example, the branch pipe 24 is branched from the inlet pipe 16 between the gas supply device 13 and the pressure gauge 20, and joins the outlet pipe 18 between the pressure gauge 21 and the gas analyzer 14. Is installed.
Further, a gas ventilation resistance adjusting device 25 is installed in the bypass portion 3, that is, in the middle of the branch pipe 24.

By providing the bypass portion 3 in this way, when the ore 5 is softened in the heating furnace 4 and the ventilation resistance increases, the reducing gas automatically enters the heating furnace 4 according to the ventilation resistance. Since the gas is distributed to the bypass path 23 branched from the inlet pipe 16 of the gas, it is possible to reproduce the situation where the gas is distributed to the coke slit when the ventilation resistance of the ore layer increases in the actual blast furnace cohesive zone. it can.
In addition, since the gas ventilation resistance adjusting device 25 is installed in the bypass portion 3, the gas flow resistance in the blast furnace can be reproduced because the ventilation resistance in the massive band above the actual fusion zone of the blast furnace can be reproduced. The conditions can be simulated.

  The ventilation resistance adjusting device 25 is not particularly limited as long as it can cause pressure loss to the reducing gas flowing on the bypass path 23 side, and various devices can be used. For example, a valve such as a butterfly valve or a needle valve can be used conveniently. The ventilation resistance on the bypass path 23 side can be set by appropriately setting the valve opening according to the test conditions. If the ventilation resistance on the bypass path 23 side is desired to be constant, an adjusting device (not shown) for adjusting the valve opening to measure the pressure before and after the valve and to make the differential pressure constant can be installed. In the present invention, since the structure is simple and adjustment is easy, the ventilation resistance adjusting device 25 is preferably configured using a valve. However, instead of the valve, coke, graphite particles, ores, ceramics are preferable. The ventilation resistance adjusting device 25 is configured using a granular material such as particles or a fibrous material such as glass fiber, and the ventilation resistance is adjusted by changing the amount or particle size of the granular material or fibrous material. May be.

That is, in an area called a massive band at the upper part of the blast furnace, ore layers and coke layers are alternately charged in layers, and the gas flows toward the upper part of the blast furnace so as to pass through the ore layers and the coke layer alternately. Since the gas that has passed through the ore layer in the cohesive zone and the gas that has passed through the coke layer in the cohesive zone flow toward the upper part of the blast furnace after passing through the cohesive zone, they pass through the layer having the same ventilation resistance. Therefore, by providing the same ventilation resistance by the ventilation resistance adjusting device 25, it is possible to reproduce the situation where the gas flows in the massive band. In the test apparatus 10 of the present invention, the ventilation resistance applied to the gas during the test using the ventilation resistance adjusting device 25 may be constant from the start of the test to the end of the test or may be changed. In the condition where the cohesive zone is assumed, both may provide the same ventilation resistance, or only one of the ventilation resistances may be changed.
In the present invention, the ventilation resistance pattern (a constant value pattern or a changing pattern) given to the gas during the test using the ventilation resistance adjusting device 25 is preliminarily determined using the test device of the present invention. It can be obtained by conducting a test that simulates resistance.

In the present invention, as shown in FIG. 5, in addition to the ventilation resistance adjusting device 25 in the bypass path 23, the ventilation resistance is also adjusted in the outlet side pipe 18 that becomes the exhaust gas flow path exiting the heating furnace 4 in the main path 19. A device 26 may be provided. Thereby, pressure can be applied to the reducing gas flowing through the ore layer 5, and the softening and melting behavior under conditions closer to those in the high-pressure blast furnace can be tested.
The gas composition and temperature to be circulated in the carbon container 6 when measuring the high temperature property of the ore 5 by the test apparatus 1 of the present invention are desirably determined in accordance with the temperature change or gas composition change in the blast furnace. For example, in the high-temperature property evaluation test for ores, when using a raw material containing a large amount of hydrogen such as natural gas or pulverized coal, the hydrogen concentration of the gas composition is increased. It is desirable to determine the heating time, temperature, and gas composition depending on the operating conditions of a certain blast furnace.

  When the test apparatus 1 of the present invention is used, a gas main path 19 passing through the heating furnace 4 and a gas bypass path 23 passing through a bypass pipe 24 installed in parallel with the heating furnace 4 are provided in the blast furnace. The gas distribution in the radial direction can also be reproduced. For example, the ore layer 5 in the carbon vessel 6 in the heating furnace 4 is assumed to be the center side of the blast furnace, and the gas flow passing through the bypass path 23 is assumed to be the ventilation resistance on the peripheral side of the blast furnace by the ventilation resistance adjusting device 25. By giving ventilation resistance, the ore 5 which has been a high-temperature property evaluation test of the ore 5 that has been conducted under the forced gas flow conditions so far, reproduces the gas distribution in the radial direction in the blast furnace. The high temperature property evaluation test can be performed. Which of the ore layer 5 in the carbon vessel 6 in the heating furnace 4 and the bypass pipe 24 installed in parallel to the heating furnace 4 may reproduce any part in the radial direction in the blast furnace, Ventilation resistance can be set freely.

The ore high-temperature property evaluation test apparatus of the present invention will be specifically described based on examples.
In order to clarify the effectiveness of the present invention, as an example of the present invention, the test apparatus of the present invention was applied, and ore A, ore B, and ore C having different properties were subjected to a high temperature property evaluation test of ore. . The test apparatus 1 shown in FIG. 1 was used for this test.
A carbon container 6 having an inner diameter of 100 mmφ was filled with 900 g of ore 5 sieved to 10 to 15 mm and installed in the heating furnace 4. In this test, the test was performed under the conditions of temperature, gas composition, and load shown in FIGS. 2 (A), (B), and (C). The gas composition is 55% N ₂ gas other than the illustrated CO and CO ₂ gas.

During this test, the differential pressure (P12-P11) of the gas passing through the ore layer 5 in the carbon vessel 6 of the heating furnace 4 was continuously measured using the two pressure gauges 20 and 21. In addition, the exhaust gas resistance that has passed through the heating furnace 4 in the main path 19 and the reducing gas that has flowed into the bypass pipe 24 in the bypass path 23 installed in parallel with the heating furnace 4 are measured from the start of the test to the end of the test. Gave a certain ventilation resistance.
The result is shown in FIG.
On the other hand, as a comparative example, tests were performed on ore A, ore B, and ore C using the test method disclosed in Non-Patent Document 1 without a bypass path and using the same test method as in the example.
The result is shown in FIG.

FIG. 3 shows an ore A, ore B, and ore C having different properties, as an example using the test apparatus 1 of the present invention, the above-described ore high-temperature property evaluation test, and the differential pressure of gas passing through the ore layer. The result of having continuously measured (P12-P11) is shown. In FIG. 3, in order to compare each ore, the maximum value of the differential pressure measured during the experiment is indexed as the relative value of the maximum differential pressure for each ore with reference to the measured value of the differential pressure of ore A. A comparison of the ventilation resistance index is shown.
As shown in FIG. 3, in the example of the present invention, a result that the ventilation resistance index decreases in the order of ore A, ore B, and ore C was obtained.

  FIG. 4 shows high-temperature properties of ore using the same test method as in Non-Patent Document 1, as a comparative example using the test apparatus disclosed in Non-Patent Document 1, with respect to Ore A, Ore B, and Ore C. An evaluation test is performed, and the results of comparison of the ventilation resistance index expressed as a relative value of the maximum differential pressure for each ore based on the measured value of the differential pressure of ore A are shown. As shown in FIG. 4, in the comparative example, the ventilation resistance index decreased in the order of ore A, ore B, and ore C as in the example, but in particular, the decrease in the ventilation resistance index as in ore B and ore C. For ores with a large diameter, the difference in the ventilation resistance index could hardly be detected, and it was difficult to compare the properties of each ore.

As described above, the high temperature property evaluation test apparatus of the present invention was also used for the evaluation of the ore under the condition of good air permeability and low differential pressure, which was difficult to detect in the high temperature property measurement evaluation test using the conventional test device. Since the difference appears clearly by conducting the high temperature property evaluation test, it becomes possible to grasp and evaluate the property of the ore more accurately.
From the above, the effect of the present invention is clear.

1 Ore high temperature property evaluation test equipment (test equipment)
2 Heating furnace part 3 Bypass part 4 Heating furnace 5 Ore, ore layer 6 Carbon vessel 6b Gas distribution port 7 Carbon push rod 8 Core tube 9 Heater 10 Reaction tube 11 Temperature controller 12 Thermometer 13 Gas supply device 14 Gas analysis Apparatus 15 Reducing gas inlet 16 Inlet pipe 17 Exhaust gas outlet 18 Outlet pipe 19 Main path 20, 21 Pressure gauge 22 Dropped material sampling apparatus 23 Bypass path 24 Branch pipes 25, 26 Ventilation resistance adjusting apparatus

Claims (4)

A carbon container that can be filled with ore, and has a gas distribution port at the bottom, and a carbon push rod that can apply a load to the ore filled in the carbon container from above, the carbon container; and A heating furnace that holds the carbon push rod at a predetermined temperature;
A gas supply device for supplying a gas of a predetermined composition into the carbon container from a flow port at the bottom thereof;
A distribution path of a gas supplied from the gas supply device, a main path through which the supplied gas flows through the carbon container, and a bypass path through which the supplied gas flows through the carbon container When,
An ore high-temperature property evaluation test device, comprising: a ventilation resistance adjusting device provided in the bypass path.   The ore high-temperature property evaluation test apparatus according to claim 1, further provided on a gas inlet side to the carbon container and a gas outlet side from the carbon container in the main path, respectively, An ore comprising a differential pressure measuring unit for measuring a differential pressure between a pressure of a gas supplied from the bottom of the carbon container and a pressure of a gas discharged from the top of the carbon container. High temperature property evaluation test equipment. The ore high-temperature property evaluation test apparatus according to claim 1 or 2, further comprising a gas analyzer that analyzes gas discharged from an upper part of the carbon container,
The main path is a gas flow path from the gas supply device through the carbon container to the gas analyzer,
2. The ore high temperature property evaluation test apparatus according to claim 1, wherein the bypass path is a gas flow path from the gas supply device to the gas analyzer by bypassing the inside of the carbon container.   The ore high-temperature property evaluation test apparatus according to any one of claims 1 to 3, further comprising a ventilation resistance adjusting device provided on the downstream side of the carbon container in the main path. Ore high temperature property evaluation test equipment.

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