CN220112338U - Atomizing system for adjusting melt flow through quick reaction - Google Patents
Atomizing system for adjusting melt flow through quick reaction Download PDFInfo
- Publication number
- CN220112338U CN220112338U CN202320301177.XU CN202320301177U CN220112338U CN 220112338 U CN220112338 U CN 220112338U CN 202320301177 U CN202320301177 U CN 202320301177U CN 220112338 U CN220112338 U CN 220112338U
- Authority
- CN
- China
- Prior art keywords
- atomizing
- smelting
- guide pipe
- bin
- liquid guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000003723 Smelting Methods 0.000 claims abstract description 63
- 238000000889 atomisation Methods 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 239000000155 melt Substances 0.000 claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims abstract description 12
- 238000009530 blood pressure measurement Methods 0.000 claims description 15
- 230000007704 transition Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000003384 imaging method Methods 0.000 claims 2
- 238000002844 melting Methods 0.000 claims 2
- 230000008018 melting Effects 0.000 claims 2
- 239000002184 metal Substances 0.000 abstract description 18
- 239000000843 powder Substances 0.000 abstract description 11
- 238000009826 distribution Methods 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 3
- 238000004663 powder metallurgy Methods 0.000 abstract description 2
- 230000002829 reductive effect Effects 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The utility model provides an atomization system for adjusting melt flow by rapid reaction, which belongs to the technical field of powder metallurgy and comprises the following components: a smelting chamber; the atomizing bin is arranged below the smelting chamber and is isolated and sealed relative to the smelting chamber; the atomizing module comprises a smelting furnace, a liquid guide pipe and an atomizing nozzle which are sequentially arranged from top to bottom; the smelting furnace is arranged in the smelting chamber, the atomizing nozzle is arranged in the atomizing bin, and the liquid guide pipe is used for conveying the melt from the smelting furnace to the atomizing nozzle; the monitoring system comprises a control system, a height sensor and a pressure measuring exhaust system, wherein the height sensor is arranged at the upper part of the smelting chamber; the pressure measuring exhaust system is arranged on the side wall of the atomization bin; the control system is connected with the height sensor and the pressure measuring and air exhausting system. The atomization system can effectively control tiny flow velocity fluctuation, improve the fine powder yield of metal powder and reduce the standard deviation of particle size distribution.
Description
Technical Field
The utility model belongs to the technical field of powder metallurgy, and particularly relates to an atomization system for adjusting melt flow through rapid reaction.
Background
Atomization refers to an industrial pulverizing technique for obtaining fine metal-based powder by using an inert gas or high-pressure water jet as an atomizing medium, and impacting a molten metal with a high-speed gas/water jet and rapidly cooling and solidifying the molten metal.
In the preparation process of atomized powder, the liquid level of the molten metal above the spray disc fluctuates or decreases due to the limitation of pouring/bottom pouring equipment, so that the static pressure of molten steel changes along with the fluctuation, the stable pouring of the molten metal is difficult to maintain, even the phenomena of reverse gas and molten steel splash back occur, and the forward atomization and the safe production are seriously influenced.
Basic research shows that stable molten metal mass flow rate is favorable for consistency of atomized powder, and factors directly influencing molten metal mass flow rate mainly comprise the diameter of a liquid guide pipe and the atomized air pressure (changing the pressure distribution in an atomized bin), but the diameter of the liquid guide pipe cannot be changed in the production process, and the flow field distribution in the atomized bin can be greatly changed and other influences are generated by adjusting the atomized air pressure, so that the rapid reaction in the atomized production process is important through other ways.
In the prior art, a technical scheme for controlling the mass flow rate of molten metal based on pressure exists, but the following problems exist: 1, the high temperature has a great influence on the pressure measuring sensor, and the rising of the temperature causes the mechanical property of the pressure sensor diaphragm to be influenced, thereby influencing the service life and the measuring precision of the pressure measuring sensor; 2, the melt is atomized into small liquid drops which are not completely solidified at the lower end of the liquid guide pipe and are in a molten or semi-solidified state, the small liquid drops are easily accumulated and attached to the sensor at the moment, the measurement precision of the sensor is affected, and the problems that signals are lost in the production process and the melt flow control is not accurate enough due to errors of measurement data often occur; 3. when the pressure in the smelting chamber is constant, the pressure at the lower end of the liquid guide pipe is related to the flow of the melt, and the pressure at the lower end of the liquid guide pipe is controlled based on the constant flow, so that the pressure adjustable range for reaching the target flow is smaller, and the control system is difficult to accurately control the power of the exhaust fan so as to reach the required pressure value at the lower end of the liquid guide pipe.
Disclosure of Invention
In order to solve the problems, the utility model provides an atomization system for quickly reacting and adjusting the flow rate of a melt, which improves the fine powder yield of metal powder and reduces the standard deviation of particle size distribution by arranging a monitoring system.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
in one aspect, the utility model provides an atomizing system for rapid reaction regulation of melt flow rate, comprising: a smelting chamber; the atomizing bin is arranged below the smelting chamber and is isolated and sealed relative to the smelting chamber; the atomizing module comprises a smelting furnace, a liquid guide pipe and an atomizing nozzle which are sequentially arranged from top to bottom; the smelting furnace is arranged in the smelting chamber, the atomizing nozzle is arranged in the atomizing bin, and the liquid guide pipe is used for conveying the melt from the smelting furnace to the atomizing nozzle; the atomizing nozzle is a circular slot type nozzle, and the atomizing module further comprises a horizontal air supply channel and a circular slot type nozzle which is arranged at an obtuse angle with the air supply channel; the liquid guide pipe penetrates through the atomizing nozzle, and the height of the liquid guide pipe below the atomizing nozzle is smaller than the height of the liquid guide pipe above the atomizing nozzle; the liquid guide pipe is connected with the smelting furnace through a transition part with a variable cross section, and the liquid guide pipe, the smelting furnace and the transition part are of an integrated structure; the monitoring system comprises a control system, a height sensor and a pressure measuring exhaust system, wherein the height sensor is arranged at the upper part of the smelting chamber; the pressure measuring exhaust system is arranged on the side wall of the atomization bin; the control system is connected with the height sensor and the pressure measuring and air exhausting system.
Further, the pressure measurement exhaust system comprises a pressure measurement sensor, an exhaust channel and an exhaust fan, wherein the pressure measurement sensor is positioned on the inner wall of the atomization bin or in the exhaust channel.
Furthermore, the atomization bin is cylindrical, and the ratio of the diameter to the height of the atomization bin is 0.75-1.2.
Further, the positions of the pressure measurement exhaust system and the atomization bin interface are located in the height direction of the atomization bin by 1/3-1/2.
Further, the height sensor is a high-speed camera system.
Further, the high-speed camera system is arranged between the included angle of 15-35 degrees and the vertical direction, and the vertical distance from the top of the smelting furnace is not less than 30cm.
Further, the horizontal distance between the high-speed camera system and the center of the smelting furnace is 0-2D a ，D a Is equivalent diameter of the smelting furnace.
Further, when the pressure measuring sensor II is positioned on the inner wall of the atomization bin, the distance between the pressure measuring sensor II and the edge of the air outlet is not more than 2/3 of the diameter of the air exhaust channel.
Further, the height sensor is a microwave range finder.
Further, the atomizing nozzle is a circular slot nozzle
The technical scheme provided by the embodiment of the utility model has the beneficial effects that: the utility model is provided with a monitoring system, and the monitoring system comprises a control system, a height sensor and a pressure measuring and air exhausting system. The height sensor measures the descending rate of the liquid level of the smelting furnace and transmits descending rate information to the control system, and the control system controls the pressure measuring exhaust system based on an algorithm, so that tiny flow speed fluctuation of the melt flow in the smelting furnace is controlled, the fine powder yield can be greatly reduced, and the standard deviation of particle size distribution can be reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an atomization system for adjusting melt flow in a rapid reaction according to embodiment 1 of the present utility model;
fig. 2 is a schematic diagram of an atomization module structure provided in embodiment 1 of the present utility model;
reference numerals: 1-an atomization system; 10-a smelting chamber and 11-an atomization bin; 12-an atomization module; 120-smelting furnace; 121-a catheter; 122-atomizing nozzles; 13-a monitoring system; 130-a control system; 131-height sensor; 132-pressure measuring exhaust system.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present utility model, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
The utility model provides an atomization system 1 for regulating melt flow through rapid reaction, which is shown in figures 1 and 2 and comprises a smelting chamber 10 and an atomization bin 11, wherein the atomization bin 11 is arranged below the smelting chamber 10, and the atomization bin 11 is isolated and sealed relative to the smelting chamber 10; an atomization module 12, wherein the atomization module 12 comprises a smelting furnace 120, a liquid guide pipe 121 and an atomization nozzle 122 which are sequentially arranged from top to bottom; the smelting furnace 120 is arranged in the smelting chamber 10, the atomizing nozzle 122 is arranged in the atomizing bin 11, and the liquid guide pipe 121 is used for conveying melt from the smelting furnace 120 to the atomizing nozzle 122; the monitoring system 13 comprises a control system 130, a height sensor 131 and a pressure measurement exhaust system 132, wherein the height sensor 131 is arranged at the upper part of the smelting chamber 10; the pressure measuring exhaust system 132 is arranged on the side wall of the atomization bin 11; the control system 130 is connected with a height sensor 131 and a pressure measuring exhaust system 132.
It can be understood that the connecting part of the smelting chamber and the atomizing bin is provided with a through hole for installing the atomizing module, and when the atomizing module is installed, the smelting chamber and the atomizing bin are sealed in a sealing way after the metal is melted; in addition, the smelting chamber and the atomization bin are isolated and sealed, which does not mean that the smelting chamber is isolated from the external atmosphere, and the smelting chamber can be used for selecting vacuum smelting or smelting in an oxidizing atmosphere based on the characteristics of the oxidizing property, the volatility and the like of the smelted metal.
In the embodiment of the utility model, the atomizing spray disc is formed by combining the atomizing medium with gas or gas-water, and is suitable for various processes, and an annular slot nozzle is adopted in the embodiment; the above-mentioned catheter 13 may be provided separately from the smelting furnace 12 for subsequent replacement of the smelting furnace or catheter, or the catheter and the smelting furnace may be integrally formed.
As shown in fig. 2, the atomizing nozzle is a circular slot nozzle, and the atomizing module further comprises a horizontal air supply channel and a circular slot nozzle arranged at an obtuse angle with the air supply channel; the liquid guide pipe penetrates through the atomizing nozzle, and the height of the liquid guide pipe below the atomizing nozzle is smaller than the height of the liquid guide pipe above the atomizing nozzle; the liquid guide pipe is connected with the smelting furnace through a transition part with a variable cross section, and the liquid guide pipe, the smelting furnace and the transition part are of an integrated structure.
The atomizing module is used for atomizing powder preparation to melt 14, atomizing storehouse 21 is used for providing the confined environment of atomizing powder preparation.
The height sensor 131 is arranged in the smelting chamber and used for detecting the height of the melt in the smelting furnace, and the pressure measuring sensor is used for detecting the pressure in the atomization bin 11. In this embodiment, the height sensor is preferably a high-speed camera system, and may also be a microwave range finder or other sensor capable of measuring the liquid level. The relevant monitoring data is transferred to the control system 130 in real time by the pressure sensor and the height sensor 131.
Preferably, the height sensor 131 is arranged on the smelting chamber shell or protrudes outwards from the smelting chamber shell under the condition of meeting the measurement precision, so that the influence of temperature and high-temperature flue gas on the sensor is avoided, and the service life and the measurement precision of the sensor are prolonged. Since the height sensor 131 measures the height of the fluid level in real time, it is possible to calculate whether the falling speed of the liquid level is uniform, i.e. whether the melt flow of the catheter is stable, and the present embodiment is suitable for intermittent production, i.e. the liquid level continuously falls during production.
Specifically, the pressure measurement exhaust system 132 includes a pressure measurement sensor, an exhaust channel and an exhaust fan, where the pressure measurement sensor is located in the inner wall of the atomization bin or the exhaust channel. The distance between the pressure measuring sensor and the edge of the air outlet in the embodiment is not more than 2/3 of the diameter of the air exhaust channel or the pressure measuring sensor is directly arranged in the air exhaust channel.
The monitoring system 13, the monitoring system 13 is connected with the control system 130, the pressure measuring and exhausting system 132 and the height sensor 131, the control system receives the monitoring data of the height sensor 131 and controls the power of the exhausting fan to enable the pressure in the atomization bin to reach a preset value, so that the flux of the melt is stable.
In this embodiment, the control system determines whether the melt flow is stable based on real-time data transmitted by the height sensor, when the melt flow deviates by a certain value, the control system 130 controls the power of the exhaust fan to control the pressure in the atomization bin and the pressure difference in the smelting chamber, so as to ensure that the melt flow is stable, specifically, when the pressure in the smelting chamber is certain, the power of the exhaust fan is directly controlled by the computer control system, and the pressure in the atomization chamber can be regulated and controlled by changing the power of the exhaust fan, so that the mass flow rate of molten metal is regulated and controlled. When the computer control system judges that the molten steel mass flow rate is about to exceed the range of the preset mass flow rate fluctuation threshold, the computer control system adjusts the pressure in the atomization bin through a built-in adjusting program. When the mass flow rate of the molten steel needs to be reduced, the power of the exhaust fan is reduced, the pressure below the liquid guide pipe is increased, and the mass flow rate of the molten steel is reduced; when the mass flow rate of molten steel needs to be increased, the power of the exhaust fan is increased, the pressure below the liquid guide pipe is reduced, and the mass flow rate of molten steel is increased. The control system 130 is provided with an automatic molten metal flow rate regulating program which predicts the change condition of the molten metal mass flow rate at the next moment according to the inherent relation among the molten metal mass flow rate, the liquid level height and the pressure below the liquid guide pipe and the pressure and the liquid level height data measured at each moment in the atomization process, and makes corresponding judgment and adjusts the power of the exhaust fan in a targeted manner when the predicted molten metal mass flow rate is about to exceed a pressure threshold.
In this embodiment, the connection mode of the atomizing medium inlet of the atomizing module and the atomizing medium outlet of the exhaust fan is not limited, and in a normal case, the atomizing medium is conveyed to the atomizing medium inlet of the atomizing module through the conveying pipeline after the gas is purified by the air outlet of the exhaust fan.
Specifically, the atomization bin is cylindrical, and the ratio of the diameter to the height of the atomization bin is 0.75-1.2. In the range, the full development of the atomizing gas flow field can be ensured, the melt can be completely crushed and condensed into powder, the erosion of the high-temperature melt to the inner wall of the atomizing bin can be reduced, and the height of a factory building can be reduced.
The pressure measurement exhaust system and the position of the atomizing bin interface are located at 1/3-1/2 of the height direction of the atomizing bin. The positions of the pressure measurement exhaust system and the atomization bin interface are required to satisfy: (1) The metal melt crushing area is far away from the metal melt crushing area to prevent the high-temperature melt from splashing, so that the service life of the system is too short; (2) The pressure measurement exhaust system should not significantly influence the normal atomization production process; (3) The pressure measuring exhaust system should not be installed below the atomization bin where the kinetic energy of the atomized gas is greatly attenuated. Based on the above consideration, the positions of the pressure measuring and air exhausting system and the atomizing bin interface are positioned in the range of 1/3 to 1/2 of the height H of the atomizing bin,
the high-speed camera system is arranged between the high-speed camera system and the vertical direction, the included angle between the high-speed camera system and the vertical direction is 15-35 degrees, and the vertical distance between the high-speed camera system and the top of the crucible is not less than 30cm. The horizontal distance between the high-speed camera system and the center of the crucible is 0-2D a ，D a Is the equivalent diameter of the crucible. The above arrangement canSo as to ensure the working life and the actual shooting effect of the camera.
The above description is only an example of the present utility model and is not intended to limit the scope of the present utility model, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (9)
1. An atomizing system for regulating melt flow in a rapid reaction, comprising:
a smelting chamber;
the atomizing bin is arranged below the smelting chamber and is isolated and sealed relative to the smelting chamber;
the atomizing module comprises a smelting furnace, a liquid guide pipe and an atomizing nozzle which are sequentially arranged from top to bottom; the smelting furnace is arranged in the smelting chamber, the atomizing nozzle is arranged in the atomizing bin, and the liquid guide pipe is used for conveying the melt from the smelting furnace to the atomizing nozzle;
the atomizing nozzle is a circular slot type nozzle, and the atomizing module further comprises a horizontal air supply channel and a circular slot type nozzle which is arranged at an obtuse angle with the air supply channel; the liquid guide pipe penetrates through the atomizing nozzle, and the height of the liquid guide pipe below the atomizing nozzle is smaller than the height of the liquid guide pipe above the atomizing nozzle; the liquid guide pipe is connected with the smelting furnace through a transition part with a variable cross section, and the liquid guide pipe, the smelting furnace and the transition part are of an integrated structure;
the monitoring system comprises a control system, a height sensor and a pressure measuring exhaust system, wherein the height sensor is arranged at the upper part of the smelting chamber; the pressure measuring exhaust system is arranged on the side wall of the atomization bin; the control system is connected with the height sensor and the pressure measuring and air exhausting system.
2. The atomizing system of claim 1, wherein the pressure measurement exhaust system comprises a pressure measurement sensor, an exhaust passage and an exhaust fan, and wherein the pressure measurement sensor is positioned in an inner wall of the atomizing chamber or the exhaust passage.
3. The atomizing system of claim 1, wherein the atomizing cartridge is cylindrical and the ratio of the diameter of the atomizing cartridge to the height is 0.75-1.2.
4. The atomizing system according to claim 1, wherein the pressure measurement exhaust system and the atomizing bin interface are positioned at 1/3-1/2 of the height direction of the atomizing bin.
5. The atomizing system of claim 1, wherein the height sensor is a high-speed camera system.
6. The atomizing system of claim 5, wherein the high-speed imaging system is disposed at an angle of 15-35 ° to the vertical, and a vertical distance from the top of the melting furnace is not less than 30cm.
7. The atomizing system of claim 6, wherein the high-speed imaging system is horizontally spaced from a center of the melting furnace by a distance of 0-2 d a ，D a Is equivalent diameter of the smelting furnace.
8. The atomizing system of claim 2, wherein when the second pressure sensor is positioned on the inner wall of the atomizing chamber, the second pressure sensor is positioned at a distance from the side of the exhaust passage of not more than 2/3 of the diameter of the exhaust passage.
9. The atomizing system of claim 1, wherein the height sensor is a microwave rangefinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320301177.XU CN220112338U (en) | 2023-02-15 | 2023-02-15 | Atomizing system for adjusting melt flow through quick reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320301177.XU CN220112338U (en) | 2023-02-15 | 2023-02-15 | Atomizing system for adjusting melt flow through quick reaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220112338U true CN220112338U (en) | 2023-12-01 |
Family
ID=88912814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320301177.XU Active CN220112338U (en) | 2023-02-15 | 2023-02-15 | Atomizing system for adjusting melt flow through quick reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220112338U (en) |
-
2023
- 2023-02-15 CN CN202320301177.XU patent/CN220112338U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2922975B1 (en) | Slag granulation system and method of operation | |
| CN115509266A (en) | Control device and control method for adjusting melt flow through rapid reaction and application of control device and control method | |
| WO2014079796A1 (en) | Dry slag granulation system and method | |
| CN114589311B (en) | Aluminum alloy melt flow control device and control method thereof | |
| CN220112338U (en) | Atomizing system for adjusting melt flow through quick reaction | |
| CN105903975B (en) | A kind of equipment for atomized metal pow der production method | |
| CN205732986U (en) | Atomized metal pow der produces equipment | |
| CN111250672B (en) | Continuous casting ladle final pouring method based on steel passing amount comparison | |
| CN1014327B (en) | Control method for lowering temp. of blast-furnace gas | |
| CN101492755B (en) | Control and obstruction-proof method for mushroom head gas flow | |
| CN106705680B (en) | Rotary jet oxygen gun for supplying heat to bottom of hearth and application method thereof | |
| CN110878383B (en) | Converter slag splashing protection control method | |
| CN115657741A (en) | Liquid level control system, gas atomization powder making equipment and control method | |
| CN102042768B (en) | Positioning control device of spraying gun | |
| CN213195631U (en) | Atomizing tower for suspension smelting | |
| Ünal et al. | Modelling of metal powder production using a wax atomiser | |
| CN116083664A (en) | Slag buffer and slag liquid real-time measurement and control system | |
| JP3381241B2 (en) | Operating method of flash furnace and concentrate burner used for the method | |
| CN108775931B (en) | A kind of metering and monitoring method of high-temperature fusant discharge capacity | |
| SU1109265A1 (en) | Apparatus for producing metal pellets from melt | |
| JP3002270B2 (en) | Production method of metal powder | |
| CN208853715U (en) | A kind of Anti-blocking structure of 3D printing metal powder process units | |
| JP3632290B2 (en) | Blast furnace operation method | |
| JPH0667778B2 (en) | Automatic blowing method for molten slag | |
| KR20010059375A (en) | furnace wall deposition and hearth temperature control system of furnace hearth bottom in a blast furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |