EP4540568A1 - Schachtofen für die erschmelzung von kupfer und verfahren hierzu - Google Patents
Schachtofen für die erschmelzung von kupfer und verfahren hierzuInfo
- Publication number
- EP4540568A1 EP4540568A1 EP23732004.9A EP23732004A EP4540568A1 EP 4540568 A1 EP4540568 A1 EP 4540568A1 EP 23732004 A EP23732004 A EP 23732004A EP 4540568 A1 EP4540568 A1 EP 4540568A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft furnace
- furnace
- opening
- charging
- shaft
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0028—Smelting or converting
- C22B15/003—Bath smelting or converting
- C22B15/0032—Bath smelting or converting in shaft furnaces, e.g. blast furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/08—Shaft or like vertical or substantially vertical furnaces heated otherwise than by solid fuel mixed with charge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories or equipment specially adapted for furnaces of these types
- F27B1/12—Shells or casings; Supports therefor
- F27B1/14—Arrangements of linings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories or equipment specially adapted for furnaces of these types
- F27B1/21—Arrangements of devices for discharging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangement of monitoring devices; Arrangement of safety devices
- F27D21/0014—Devices for monitoring temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0033—Heating elements or systems using burners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
- F27D1/045—Bricks for lining cylindrical bodies, e.g. skids, tubes
- F27D2001/047—Lining of cylindrical vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0003—Monitoring the temperature or a characteristic of the charge and using it as a controlling value
Definitions
- the invention relates to a shaft furnace for melting charging material, in particular copper cathodes, into molten copper, with a vertically arranged steel jacket and a solid lining arranged therein, the steel jacket having at least one charging opening for feeding the charging material into the shaft furnace and a tap opening for draining the molten copper from the shaft furnace.
- burners preferably several burners arranged in a row and several levels around the circumference of the shaft furnace, are arranged between the charging opening and the tapping opening for heating the charging material and melting the copper.
- the invention also relates to a method for melting charging material such as copper cathodes into molten copper in such a shaft furnace.
- Processes and shaft furnaces, also known as vertical furnaces, for melting copper have been known from the state of the art for decades.
- copper is charged in solid form via an upper charging opening and heated and melted by means of burners arranged in a lower area of the shaft furnace, such as gas burners, and finally led out of it via a tapping opening arranged in the lower area of the shaft furnace, for example via a connecting channel into a holding furnace into it or directly to a corresponding casting device.
- a tapping opening arranged in the lower area of the shaft furnace, for example via a connecting channel into a holding furnace into it or directly to a corresponding casting device.
- the shaft furnace usually consists of a cylindrical steel jacket and a solid lining arranged within it.
- Such a shaft furnace and a method for operating it are known, for example, from DE 2 062 144 A1.
- the CN 214701690 U in turn also describes a vertical furnace for the production of copper with a vertically arranged furnace body.
- the setting of the burner output is usually designed in such a way that the output of the burner is set purely depending on the fill level of the subsequent holding furnace, which functions as a storage facility for the downstream casting system.
- the molten copper runs continuously over the usually inclined bottom area of the shaft furnace below the lowest row of burners and is led into the connecting channel to the holding furnace via a brick tap opening embedded in the furnace wall.
- the dimensioning of the tap opening is based on empirical values.
- the disadvantage of the prior art known from practice is that monitoring the fill level with the help of a camera requires the constant attention of the system operator. He is usually responsible for ensuring that a new load of cathodes is dumped into the furnace in a timely manner via the charging device. If charging takes place too early, the cathodes cannot be positioned in the preferred vertical orientation by the charging device and lie diagonally or horizontally in the shaft. As the process progresses, this hinders the optimal heat exchange between the exhaust gas and the cathode material that slides down. However, if charging takes place too late, the lining is damaged where the cathodes hit the refractory lining from a drop that is too high. Furthermore, energy efficiency is reduced if the oven is not continuously filled to capacity.
- the cathodes fall onto the previously charged cathode layer in a relatively random orientation.
- the burners in the lower area of the furnace melt the cathodes; melt that flows off at the bottom of the furnace flows out through the tap opening.
- the cathodes slide continuously from top to bottom, with the temperature constantly increasing from top to bottom.
- the lining and the cathodes expand and often become wedged. They often only slip when additional cathodes are charged from above or when the jammed material has deformed and torn loose. This means that the supply to the burner area is no longer continuous, but rather in batches, and the melting rate of the shaft furnace therefore varies.
- the geometry of the tap opening is very important for the energy balance of the furnace and also for its reliability. Is the tap opening For example, if it is too large, too much energy escapes through the tap opening into the adjacent connecting channel and causes problems there, for example overheating of the burners positioned there. However, if it is too small, there is a risk of copper clogging and freezing in the bottom area of the shaft furnace. With the current state of the art, subsequent optimization of the geometry of the tap opening is only possible after the furnace has been shut down and the brick lining inside the furnace has been reworked.
- the invention aims to ensure that jamming of the cathodes can be avoided in order to achieve a targeted and continuous melting rate of the shaft furnace.
- the aim of the invention is to achieve automatic adjustment of the burner output instead of the previously known manual readjustment of the burner output.
- the geometry of the tapping opening should be able to be changed and optimized from the outside without interfering with the actual lining of the shaft furnace, which ultimately means that a continuous and stationary operation of the shaft furnace can be achieved with preferably significantly reduced energy consumption.
- a shaft furnace for melting charging material into molten copper which has a vertically arranged steel jacket and a refractory lining arranged therein.
- the shaft furnace has at least one charging opening for feeding the charging material into the shaft furnace and a tap opening for draining the molten copper out of the shaft furnace.
- Burners preferably several burners arranged in several levels and in a row around the circumference of the shaft furnace, are arranged in predetermined levels of the shaft furnace between the charging opening and the tapping opening for heating the charging material and melting the copper.
- the steel jacket of the shaft furnace is cylindrical at least in an upper area above the top burner or the top row of burners and the refractory lining in the upper area comprises, from top to bottom, a sequence of cylindrical sections that are arranged concentrically to one another and a respective diameter have, which increases from section to section.
- a shaft furnace is therefore provided whose inner diameter is at least in a partial area, preferably in a substantial part (more than 70%, preferably more than 80% of the shaft length) of the shaft above the burners, in particular in that part of the shaft, which adjoins the area below the charging opening and extends to the top burner level, particularly preferably over the entire length of the shaft above the burner, gradually increases in size in order to ensure that solid charging material, for example in the form of copper cathode plates, continuously and smoothly slides in to enable the heating of both the refractory lining and the charging material during operation of the shaft furnace. It is particularly preferred if the shaft furnace has at least three, preferably at least five, of such successive and adjacent sections with gradually increasing inner diameters of the refractory lining.
- the diameter of the cylindrical sections of the refractory lining is designed such that the thermal expansion of the refractory material, preferably the thermal expansion of the refractory material and the charging material, is at least compensated for under operating conditions of the shaft furnace.
- the terms “first subsection” and “second subsection” in the sense of the invention include any pair of two subsections arranged one above the other and adjacent to one another.
- the difference in diameter between a first section and a second section is at least 16 mm, preferably at least 20 mm.
- At least one sensor preferably three sensors arranged one above the other, is provided for measuring the filling level of the shaft furnace with charging material. These sensors are particularly preferably arranged above the topmost burner level and directly below the charging opening, particularly preferably not more than 1 m based on the topmost sensor below the charging opening.
- the at least one sensor preferably the three sensors, are each assigned a receiver, which is particularly preferably arranged opposite the respective sensor in the plane of the respective sensor of the shaft furnace. This achieves a simple and reliable measurement of the filling height of the shaft furnace, which makes visual inspection unnecessary.
- the sensors thereby measure the filling level of the shaft horizontally and can determine whether the shaft furnace is filled in the respective level, which is covered by the sensor, if necessary the receiver connected to it. It is preferred if an alarm signal is emitted when the filling falls below a predetermined threshold value, which indicates whether new charging is necessary. In this context, it is particularly preferred if the sensors are connected to a device which automatically triggers refilling by the charging system when the charging system falls below a predetermined threshold value. As a result, a higher degree of automation is achieved using particularly simple means than in the previously known shaft furnaces for melting charging material into molten copper.
- the ideally three sensors are attached to one another below the charging level in the shaft furnace at distances of preferably 400 - 600 mm, in particular 450 - 550 mm, very particularly preferably 500 mm, and measure whether there is charging material in the scanned level.
- the copper heats up from room temperature to almost the melting temperature jamming of the copper cathodes or any other charging material is prevented by at least compensating for the thermal expansion of the charging material by gradually increasing the diameter of the refractory material from top to bottom becomes.
- the thermal expansion of the copper is 16.5*10 A -6 1/K and that of the brick lining is around 5*10 A -6 1/K.
- the lining is designed in such a way that, on the one hand, the cost-effective cylindrical outer shape of the steel jacket and the refractory material above the rows of burners is retained, and on the other hand, the load-bearing capacity of the refractory lining is guaranteed and the production of the prefabricated bricks remains as cost-effective as possible.
- a measuring sensor preferably a measuring lance connected to the shaft furnace
- the heat balance of the shaft furnace can be calculated using a process model and the required current amount of gas or burner output of the individual burners or rows of burners can be determined. This results in the basic setting of the burners; the burner output is usually set so that the burners in a respective row work with the same output and the power distribution of the individual rows is set in advance.
- the above-mentioned setting can be continually corrected using these values.
- the operation of the shaft furnace is then preferably completely automatic.
- the refractory lining for the tap opening is designed to protrude from the area of the refractory lining and through the steel jacket from the inside to the outside beyond the longitudinal extent of the steel jacket.
- the height of the tapping opening is preferably defined by a shaped stone, which is inserted laterally into the adjacent refractory bricks and is fixed from above by further bricks.
- the part of the refractory lining that projects beyond the steel jacket of the shaft furnace, in particular of the shaped brick and the refractory bricks surrounding it is surrounded by a steel sleeve or a steel frame, via which the tightness of this area of the shaft furnace around the opening of the shaped brick around can be guaranteed.
- a part of the steel sleeve or the steel frame, in particular an upper steel plate, is detachably connected to it.
- the releasable connection of the steel plate from the rest of the steel sleeve or the steel frame can preferably be achieved by clamping or screwing. After removing the steel plate, unhindered access to the refractory bricks and/or the shaped brick embedded in the steel sleeve or the steel frame can be made possible without having to intervene in the interior of the shaft furnace.
- a holding furnace is arranged downstream of the tap opening of the shaft furnace, which is connected to a sensor, preferably a weighing cell, for measuring the weight of the melt in the holding furnace and for detecting the change in weight in the holding furnace.
- a measurement parameter is obtained using particularly simple means, which can be used to calculate the heat balance of the Shaft furnace and the associated current required gas quantity or burner output can be determined.
- each row of burners preferably each individual burner
- thermocouples are provided in the area of the refractory lining, in particular in the area of the burners and/or in the shaft arranged above them, for detecting the temperature of the refractory lining.
- the measured values that can be recorded in this way can be used to optimize the temperatures of the brick lining with regard to its service life and can be used to operate the shaft furnace, preferably automatically.
- a control or regulation unit is set up and designed to control or regulate the filling level of the shaft furnace and/or the melting rate of the shaft furnace, preferably automatically, in particular to ensure a continuous supply of charging material and/or a melting rate that is as constant as possible . All of this serves to increase the efficiency of the shaft furnace and to achieve the highest possible thermal efficiency.
- a method for melting charging material into molten copper in a shaft furnace is provided.
- the method according to the invention is characterized in that a control or regulation unit preferably automatically controls or regulates the charging of the shaft furnace, the filling level within the shaft furnace and the output of each row of burners, preferably each individual burner.
- the control or regulation unit calculates the heat balance of the shaft furnace on the basis of measured parameters and using a process model.
- the measured parameters used for this include the fill level of the shaft furnace, the temperature of the molten copper as it emerges from the tapping opening and, preferably, also the weight and/or the change in weight of the molten copper within a holding furnace arranged downstream of the tapping opening, particularly preferably also the production rate of a shaft furnace downstream casting system.
- the measured parameters for calculating the heat balance of the shaft furnace are entered into a process model, by means of which the currently required burner output, in particular the amount of fuel required by each burner, is determined.
- the geometry of the tap opening determines the energy balance of the furnace, and the same applies to the overall reliability of the shaft furnace operation.
- the tap opening geometry significantly limits the amount of hot air emerging from the shaft furnace into the connecting channel. The lower this amount of hot air is, the more energy efficient the shaft furnace can be operated overall. At the same time, it must be taken into account that slag in particular can hinder the escape of molten copper from the tap opening. It is therefore particularly advantageous if the components defining the tap opening, such as shaped stone and the refractory bricks surrounding the shaped stone, are easily accessible and arranged outside the steel jacket.
- the provision of a steel sleeve or a steel frame around the parts of the tap opening protruding from the steel jacket enables the efficient limitation of unwanted hot air escape. With the preferred detachable steel plate on the steel collar or steel frame Access to all components of the tap opening is still easy to implement.
- the melting rate of the shaft furnace does not vary or only varies minimally.
- optimal filling of the shaft furnace is guaranteed, which means that high thermal efficiency can be achieved.
- an effective control of the melting rate of the shaft furnace can be achieved; at the same time, the implemented control can automatically adjust the burners.
- the energy balance of the furnace can be further improved by optimizing the tap opening height.
- Figure 1 is a schematic sectional view through a shaft furnace according to the invention
- FIG. 2 is a detailed view of an upper region of the shaft furnace according to Figure 1,
- Figure 3 is a sectional view through the refractory lining
- Figure 4 is a schematic sectional view through a system
- Figure 5 shows a schematic diagram for the automatic burner control in the shaft furnace according to the invention.
- FIG. 1 shows a cross-sectional view through a shaft furnace 1 according to the invention for melting charging material into molten copper.
- the shaft furnace 1 consists of a vertically arranged steel jacket 2 and refractory lining 3 arranged therein.
- the steel jacket 2 has a charging opening 4 arranged at the top of the shaft furnace 1 for feeding the charging material into the shaft furnace 1 and a tap opening 5 for draining the molten copper from the shaft furnace 1 out on.
- burners 6 are arranged in rows or levels around the circumference of the shaft furnace 1, with three rows of burners 6 being provided in the present embodiment.
- the shaft furnace 1 has a shaft area 7 in which essentially solid charging material in the form of copper cathodes is conveyed from top to bottom due to gravity and is continuously heated there from the charging temperature to the melting temperature.
- the shaft area 7 of the shaft furnace 1 above the burner 6 has a height of approximately 9 m with a minimum internal diameter of 1804 mm.
- the shaft area 7 of the shaft furnace 1 above the burner 6 consists of a plurality of cylindrical sections 8a-e, the diameter of which increases by 20 mm from section 8 to section 8.
- the diameters of the sections 8 are designed so that even with one Heating of the refractory material, which has a temperature gradient both from top to bottom and from the inside to the outside, a safe sliding of the charging material from top to bottom is also ensured over the several sections 8a-e of the refractory lining 3.
- FIG. 2 shows a detailed view of the upper area of the shaft furnace 1 from FIG. Adjacent to this, a further section 8b is provided in the refractory lining 3, which again has an inner diameter that is 20 mm larger than in the upper, adjacent section 8a, and is therefore 1844 mm.
- Figure 3 shows a cross-sectional view through the area of the shaft furnace (not shown) in the area of the tap opening 5.
- the tap opening 5 is defined by a shaped brick 5a, which is surrounded at the top and bottom by a row of refractory bricks 5b.
- Both the shaped brick 5a and the refractory bricks 5b directly adjacent to the shaped brick 5a are arranged in such a way that a part of at least the shaped brick 5a projects out of the shaft furnace 1 beyond the longitudinal extent of the steel jacket 2.
- This protruding section of shaped brick 5a and the refractory bricks 5b surrounding it is then surrounded by a steel sleeve or a steel frame on the steel jacket 2.
- an integral part of this steel sleeve or the steel frame is an upper steel plate 5c, which is detachably connected to the steel sleeve or the steel frame via clamping elements. If the steel plate 5c is removed, there is essentially unhindered access to those parts of the refractory components of the tap opening 5 that protrude beyond the steel jacket 2.
- Figure 4 shows a schematic partial view of the upper area of the shaft furnace 1 approximately 1 m below the charging opening (not shown).
- the charging opening On the outside of the steel jacket 2 there are three levels 10a to 10c about 1 m below the (not shown) charging opening and at a distance of approximately 500 mm from each other three sensors 12a to 12c and three receivers 13a to 13c which are operatively connected to each other.
- the sensors 12a to 12c it can thus be determined whether or not solid charging material is present within the shaft furnace 1 at the level of the sensors 12a to 12c and receivers 13a to 13c.
- FIG. 5 shows a schematic diagram of the automatic control of the burner output within a shaft furnace 1 according to the invention.
- the measurement of the temperature of the molten copper emerging from the tapping opening 5 by means of a measuring cell 9a and the weight of the copper melted in a holding furnace 14 by means of a measuring cell 9 are controlled - or control unit 15, via which the output of a respective burner 6 within the shaft furnace 1 is adjusted, taking into account the current production rate of the downstream casting system (not shown).
- This ensures constant operation of the shaft furnace 1 in a substantially automated manner with preferably constant burner power and a constant flow of molten copper from the tapping opening 5 into the holding furnace 14.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022206100.4A DE102022206100A1 (de) | 2022-06-17 | 2022-06-17 | Schachtofen für die Erschmelzung von Kupfer und Verfahren hierzu |
| PCT/EP2023/065048 WO2023241989A1 (de) | 2022-06-17 | 2023-06-06 | Schachtofen für die erschmelzung von kupfer und verfahren hierzu |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4540568A1 true EP4540568A1 (de) | 2025-04-23 |
Family
ID=86861927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23732004.9A Pending EP4540568A1 (de) | 2022-06-17 | 2023-06-06 | Schachtofen für die erschmelzung von kupfer und verfahren hierzu |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP4540568A1 (de) |
| JP (1) | JP2025520490A (de) |
| KR (1) | KR20250009471A (de) |
| CN (1) | CN119604732A (de) |
| DE (1) | DE102022206100A1 (de) |
| WO (1) | WO2023241989A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU60094A1 (de) * | 1969-12-24 | 1971-08-17 | ||
| DE2327073C2 (de) * | 1973-05-26 | 1974-11-21 | Kloeckner-Werke Ag, 4100 Duisburg | Verfahren und Vorrichtung zum Einschmelzen von Schrott oder dgl |
| JPH03291490A (ja) * | 1990-04-06 | 1991-12-20 | Furukawa Electric Co Ltd:The | 縦型溶解炉の棚吊り異常検出方法及び制御方法 |
| JP4030145B2 (ja) * | 1997-02-06 | 2008-01-09 | 日本碍子株式会社 | 銅シャフト炉 |
| CN202470721U (zh) * | 2011-12-31 | 2012-10-03 | 杭州杭真真空工程技术有限公司 | 合金烘烤炉 |
| CN203432275U (zh) * | 2013-07-01 | 2014-02-12 | 海城市华林矿业集团有限公司 | 一种轻烧镁粉竖窑 |
| JP7200164B2 (ja) * | 2020-03-30 | 2023-01-06 | パンパシフィック・カッパー株式会社 | シャフト炉の監視方法、シャフト炉の監視装置及びプログラム |
| CN214701690U (zh) | 2021-06-10 | 2021-11-12 | 大冶有色金属有限责任公司 | 一种在线进行炉瘤监测的废杂铜生产竖炉 |
-
2022
- 2022-06-17 DE DE102022206100.4A patent/DE102022206100A1/de active Pending
-
2023
- 2023-06-06 JP JP2024573704A patent/JP2025520490A/ja active Pending
- 2023-06-06 EP EP23732004.9A patent/EP4540568A1/de active Pending
- 2023-06-06 CN CN202380047480.4A patent/CN119604732A/zh active Pending
- 2023-06-06 WO PCT/EP2023/065048 patent/WO2023241989A1/de not_active Ceased
- 2023-06-06 KR KR1020247040616A patent/KR20250009471A/ko active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| KR20250009471A (ko) | 2025-01-17 |
| DE102022206100A1 (de) | 2023-12-28 |
| CN119604732A (zh) | 2025-03-11 |
| WO2023241989A1 (de) | 2023-12-21 |
| JP2025520490A (ja) | 2025-07-03 |
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