Anode mud treatment method and anode mud treatment equipment

Abstract

The invention relates to the technical field of anode slime, and provides an anode slime treatment method and anode slime treatment device.The anode slime treatment method comprises the steps that a path between a feeding cavity and a smelting cavity is cut off, a crucible is placed in the feeding cavity, and the feeding cavity and the smelting cavity are vacuumized and supplemented with protective gas; a path between the feeding cavity and the smelting cavity is conducted, and the crucible is moved into the smelting cavity; heating the anode mud in the crucible through a heating device to melt the anode mud; the molten anode mud is solidified into a metal ingot; and the crucible is moved into the feeding cavity, the path between the feeding cavity and the smelting cavity is cut off, and the metal ingot is taken out. According to the treatment method provided by the embodiment of the invention, the smelting efficiency of the anode slime can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of anode mud, and in particular to a method for treating anode mud and an anode mud treating device. Background Art

[0002] This section is intended to provide a background or context for the embodiments of the present application. No description herein is admitted to be prior art by virtue of its inclusion in this section.

[0003] Anode mud is a precipitate formed during the electrolytic refining process. It is a highly radioactive substance. Since anode mud is an extremely fine powder, it is difficult to transport and store for a long time and over long distances. Therefore, the powdered anode mud needs to be smelted, solidified into a single metal ingot, and then packaged into a container to prevent it from entering the natural environment. In the related art, the smelting efficiency of anode mud is poor. Summary of the invention

[0004] In view of this, the embodiments of the present application hope to provide a treatment of anode mud and anode mud treatment equipment, which can improve the smelting efficiency of anode mud.

[0005] In a first aspect, an embodiment of the present application provides a method for processing anode mud. The anode mud processing equipment includes a crucible, a furnace, a heating device and a feeding device. The crucible is used to hold the anode mud. The furnace is formed with a smelting chamber. The heating device is arranged in the smelting chamber. The feeding device includes a feeding chamber. The processing method includes:

[0006] Cutting off the path between the feed chamber and the smelting chamber, placing the crucible in the feed chamber, evacuating the feed chamber and the smelting chamber, and replenishing protective gas;

[0007] Connecting the path between the feed chamber and the smelting chamber, and moving the crucible into the smelting chamber;

[0008] heating the anode mud in the crucible by a heating device so that the anode mud melts;

[0009] The molten anode mud solidifies into a metal ingot;

[0010] The crucible is moved into the feed chamber, the path between the feed chamber and the smelting chamber is cut off, and the metal ingot is taken out.

[0011] In some embodiments, after the crucible is moved into the smelting chamber, the path between the feed chamber and the smelting chamber is cut off.

[0012] In some embodiments, the processing method includes:

[0013] In the process of heating the anode mud in the crucible by the heating device, the salt evaporated from the anode mud during the heating process is collected.

[0014] In some embodiments, the anode mud processing equipment includes a desalting device, which has a desalting position, and the desalting position is located above the heating device. When the desalting device is located at the desalting position, the desalting device is used to collect salt evaporated from the anode mud during the heating process.

[0015] In some embodiments, the desalination device is formed with a collecting chamber, a guide channel and an air suction port, the collecting chamber is communicated with the guide channel, the guide channel is open downward, and the air suction port is communicated with the collecting chamber.

[0016] In some embodiments, collecting the salt evaporated from the anode mud during the heating process includes:

[0017] The gas in the collecting chamber is sucked out through the suction port.

[0018] In some embodiments, the molten anode mud is solidified into a metal ingot, comprising:

[0019] The crucible is placed in a heat preservation device of the anode mud treatment equipment to cool and solidify.

[0020] In some embodiments, during the process of heating the anode mud in the crucible by the heating device, the processing method includes:

[0021] The temperature of the anode mud in the crucible is monitored by a thermocouple and an infrared temperature measuring element;

[0022] The output power of the heating device is controlled according to the first temperature measurement value measured by the thermocouple and the second temperature measurement value measured by the infrared temperature measuring element.

[0023] In some embodiments, controlling the output power of the heating device according to the first temperature value measured by the thermocouple and the second temperature value measured by the infrared temperature measuring element includes:

[0024] Before the second temperature measurement value measured by the infrared temperature measuring element suddenly changes, the output power of the heating device is controlled according to the first temperature measurement value measured by the thermocouple;

[0025] After the second temperature measurement value measured by the infrared temperature measuring element changes suddenly, the output power of the heating device is controlled according to the second temperature measurement value measured by the infrared temperature measuring element.

[0026] A second aspect of an embodiment of the present application provides an anode mud processing device, which processes the anode mud using any of the processing methods described above. The anode mud processing device includes a crucible, a furnace, a heating device and a feeding device. The crucible is used to hold the anode mud, the furnace forms a smelting chamber, the heating device is arranged in the smelting chamber, and the feeding device includes a feeding chamber.

[0027] The embodiment of the present application provides a method for processing anode mud. On the one hand, by cutting off the path between the feed chamber and the smelting chamber, the smelting chamber and the feed chamber can each become a closed chamber, which can not only prevent the anode mud from reacting with oxygen to generate impurities, but also reduce the heat generated by the heating device from diffusing outward, thereby achieving a better heat insulation effect. On the other hand, the operator does not need to put the crucible directly into the smelting chamber or take the crucible out of the smelting chamber, which prevents other devices in the smelting chamber from being accidentally touched and damaged, and can also reduce the risk of high-temperature gas scalding the operator. On the other hand, in the case where multiple smelting of anode mud is required, it is only necessary to evacuate the feed chamber and replenish the protective gas. In this way, the processing steps of the smelting chamber can be omitted, saving time, thereby improving the smelting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of a process flow of a processing method provided in some embodiments of the present application;

[0029] Figure 2 A schematic diagram of the structure of an anode mud treatment device provided in some embodiments of the present application;

[0030] Figure 3 for Figure 2 A schematic diagram of the structure shown in another viewing angle;

[0031] Figure 4 A schematic diagram of the structure of a desalination device provided in some embodiments of the present application;

[0032] Figure 5 for Figure 4 A schematic cross-section diagram at position aa;

[0033] Figure 6 for Figure 2 Enlarged view of point A in the middle.

[0034] Description of Reference Numerals

[0035] Anode mud treatment equipment 100;

[0036] Crucible 1;

[0037] Furnace 2; smelting chamber 2a;

[0038] Heating device 3;

[0039] Feeding device 4; feeding chamber 4a; feeding port 4b; gate valve 41; valve driving member 42;

[0040] Desalination device 5; collecting chamber 5a; guide channel 5b; air extraction port 5c; collecting member 51; cooling channel 51a; liquid inlet 51b; liquid outlet 51c; guide member 52; air inlet 52a; air outlet 52b;

[0041] Insulation device 6;

[0042] Thermocouple 71; infrared temperature measuring element 72;

[0043] First driving mechanism 8; first driving member 81; clamping member 82;

[0044] The second driving mechanism 9 ; the second driving member 91 ; and the storage platform 92 . DETAILED DESCRIPTION

[0045] The following is a further detailed description of the implementation of the present application in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application.

[0046] The various specific technical features and embodiments described in the specific implementation methods can be combined in any suitable manner without contradiction. For example, different implementation methods can be formed by combining different specific technical features / embodiments. In order to avoid unnecessary repetition, the various possible combinations of the specific technical features / embodiments in this application are no longer described separately. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. The application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0047] To facilitate understanding of the anode mud treatment method provided in the embodiment of the present application, the anode mud treatment device 100 provided in the embodiment of the present application is first described:

[0048] See also Figures 2 to 6 The anode mud processing equipment 100 includes a crucible 1, a furnace 2, a heating device 3 and a feeding device 4. The crucible 1 is used to hold the anode mud. The furnace 2 forms a smelting chamber 2a. The heating device 3 is arranged in the smelting chamber 2a. The feeding device 4 includes a feeding chamber 4a.

[0049] The crucible 1 can prevent the anode mud from contacting with the external environment and other devices and causing contamination. For example, please refer to Figure 2 and Figure 3 The feeding device 4 includes a feeding port 4b connected to the feeding chamber 4a, and the crucible 1 enters and exits the feeding chamber 4a through the feeding port 4b. In this way, it is easy to replace the crucible 1 and reduce severe corrosion caused by repeated use of the same crucible 1.

[0050] The heating device 3 is used to heat the anode mud in the crucible 1. The heating device 3 is arranged in the smelting chamber 2a. That is to say, the anode mud completes the entire smelting process in the smelting chamber 2a. The side wall of the furnace 2 can separate the smelting chamber 2a from the external environment. In this way, other equipment and operators can be protected to ensure the efficiency and safety of the smelting process.

[0051] In one embodiment, the crucible 1 can be a cold crucible, which is formed with a containing cavity for containing anode mud. The cold crucible has a cooling passage for circulating a cooling medium. During operation, the cooling medium flows in the cooling passage to cool the cavity wall of the containing cavity. The temperature of the anode mud is much higher than the temperature of the cavity wall. In this way, a solid shell is formed at the contact portion between the anode mud and the cavity wall. The shell can reduce the corrosion effect of the anode mud on the cold crucible, extend the service life of the cold crucible, and make the cold crucible reusable and convenient for processing corrosive materials.

[0052] The cooling medium refers to a medium that exchanges heat with an object and absorbs the heat of the object to cool the object. The cooling medium may be a fluid, for example, water or cooling oil.

[0053] In one embodiment, the heating device 3 includes a power supply and an induction coil, which are electrically connected to provide an alternating current. The induction coil generates an induced magnetic field under the action of electromagnetic induction to heat the anode mud.

[0054] Exemplarily, the induction coil is a multi-turn spiral coil structure, and the induction coil is surrounded to form a heating chamber. When an alternating current is passed through the induction coil, an induced magnetic field is generated, and when the crucible 1 is located in the induced magnetic field, an induced current, i.e., an eddy current, is generated. The eddy current generates heat energy during the flow in the crucible 1, thereby heating the anode mud.

[0055] The induction coil generates an induction magnetic field to heat the anode mud, which has the characteristics of fast heating speed, high efficiency, uniform temperature, etc. In addition, according to the different types and shapes of the crucible 1, an induction coil adapted thereto can be provided to achieve accurate heating of the anode mud.

[0056] See also Figure 1 , the present application embodiment provides a method for treating anode mud, comprising:

[0057] Step S10, cutting off the path between the feed chamber and the smelting chamber, placing the crucible in the feed chamber, evacuating the feed chamber and the smelting chamber, and replenishing protective gas;

[0058] When the path between the feed chamber 4a and the smelting chamber 2a is cut off, the feed chamber 4a and the smelting chamber 2a are not connected, and the smelting chamber 2a is a closed chamber. The smelting chamber 2a is evacuated by the ventilation device so that the vacuum degree in the smelting chamber 2a is less than 5×10 -4 Pa (Pascal), and the oxygen content in the smelting chamber 2a is lower than 5ppm (parts per million). The ventilation device supplements the protective gas in the smelting chamber 2a, so that the smelting chamber 2a is in an inert environment to prevent the metal substances in the anode mud from reacting with oxygen to generate impurities.

[0059] It should be noted that the crucible 1 is first placed in the feed chamber 4a, and then the feed chamber 4a is evacuated and the protective gas is supplemented. Since the path between the feed chamber 4a and the smelting chamber 2a is cut off, the feed chamber 4a and the smelting chamber 2a are independent of each other, and no gas will flow between them, and the feed chamber 4a and the smelting chamber 2a can be evacuated and the protective gas can be supplemented separately.

[0060] Exemplarily, after the path between the feed chamber 4a and the smelting chamber 2a is cut off, the actions of evacuating the feed chamber 4a and the smelting chamber 2a and replenishing the protective gas can be performed simultaneously or separately. For example, the two chambers of the feed chamber 4a and the smelting chamber 2a can be evacuated and replenished with protective gas at the same time; for another example, the feed chamber 4a can be evacuated and replenished with protective gas first, and then the smelting chamber 2a can be evacuated and replenished with protective gas; for another example, the smelting chamber 2a can be evacuated and replenished with protective gas first, and then the feed chamber 4a can be evacuated and replenished with protective gas. Other embodiments can also be performed based on the above examples, which will not be repeated here one by one.

[0061] After the environmental treatment in the smelting chamber 2a is completed or while the environmental treatment in the smelting chamber 2a is being completed, the crucible 1 is placed in the feed chamber 4a, and the feed port 4b is closed. The feed chamber 4a is a closed chamber, and the feed chamber 4a is evacuated and the protective gas is supplemented through the ventilation device, so that the environment of the feed chamber 4a and the smelting chamber 2a is roughly the same. During the process of placing the crucible 1 in the feed chamber 4a, the smelting chamber 2a is always kept in a closed state, so that the environment in the smelting chamber 2a is not affected.

[0062] The specific type of the shielding gas is not limited, for example, the shielding gas may be argon or helium.

[0063] Step S20, connecting the path between the feed chamber and the smelting chamber, and moving the crucible into the smelting chamber;

[0064] When the path between the feed chamber 4a and the smelting chamber 2a is connected, the feed chamber 4a and the smelting chamber 2a are in a connected state. Since the environments of the feed chamber 4a and the smelting chamber 2a are roughly the same, the air pressure and the inert environment in the smelting chamber 2a will not be destroyed, thereby ensuring the stability of the smelting process.

[0065] Step S30, heating the anode mud in the crucible by a heating device to melt the anode mud;

[0066] Specifically, the heating device 3 heats the crucible 1 so that the anode mud in the crucible 1 is transformed from powder to molten state, that is, the anode mud is transformed from solid phase to liquid phase. Thus, compared with the light powder anode mud, the molten anode mud is not easy to be scattered everywhere, and is convenient for collection and processing.

[0067] Step S40, the molten anode mud is solidified into a metal ingot;

[0068] That is to say, during the cooling process of the molten anode mud, the anode mud is transformed from the liquid phase to the solid phase, and the molten anode mud is finally solidified into a single metal ingot. According to production requirements, the molten anode mud can be solidified into metal ingots of different shapes. Exemplarily, the crucible 1 is formed with a receiving cavity, which is used to hold the anode mud. The receiving cavity is roughly cylindrical. In this way, the molten anode mud is roughly cylindrical after solidification. The cylindrical metal ingot is relatively regular and easy to be packaged into a container, and is also convenient for transportation and storage.

[0069] Step S50, moving the crucible into the feed chamber, cutting off the path between the feed chamber and the smelting chamber, and taking out the metal ingot.

[0070] That is to say, before taking out the metal ingot, the path between the feed chamber 4a and the smelting chamber 2a is cut off, and the feed chamber 4a and the smelting chamber 2a are closed cavities respectively. In this way, when the feed chamber 4a is opened to take out the metal ingot, the smelting chamber 2a remains closed, so as not to affect the environment in the smelting chamber 2a.

[0071] It is understandable that, in the case where multiple smelting of anode mud is required, each time new anode mud is replaced, the path between the feed chamber 4a and the smelting chamber 2a can be cut off first, and the smelting chamber 2a will basically not be connected to the outside world. In this way, the smelting chamber 2a can be kept full of protective gas, and there is no need to repeatedly evacuate and replenish the protective gas for the smelting chamber 2a each time new anode mud is replaced. The ventilation device only needs to evacuate and replenish the protective gas for the feed chamber 4a. In this way, the processing step of the ventilation device on the smelting chamber 2a can be omitted, saving time, thereby improving the smelting efficiency.

[0072] It should be noted that, in the present application, multiple times refers to times including twice or more.

[0073] The embodiment of the present application provides a method for processing anode mud. On the one hand, by cutting off the path between the feed chamber 4a and the smelting chamber 2a, the smelting chamber 2a and the feed chamber 4a can each become a closed chamber, which can not only prevent the anode mud from reacting with oxygen to generate impurities, but also reduce the heat generated by the heating device 3 from diffusing outward, thereby achieving a better heat insulation effect. On the other hand, the operator does not need to directly put the crucible 1 into the smelting chamber 2a or directly take the crucible 1 out of the smelting chamber 2a, which prevents other devices in the smelting chamber 2a from being accidentally touched and damaged, and can also reduce the risk of high-temperature gas scalding the operator. On the other hand, in the case where multiple smelting of anode mud is required, it is only necessary to evacuate the feed chamber 4a and replenish the protective gas. In this way, the processing step of the smelting chamber 2a can be omitted, saving time, thereby improving the smelting efficiency.

[0074] In one embodiment, before taking out the metal ingot, the temperature of the metal ingot is lowered to room temperature. For example, when anode mud is smelted indoors, the metal ingot is lowered to room temperature. For another example, when anode mud is smelted outdoors, the metal ingot is lowered to outdoor temperature. In this way, workers can be prevented from being scalded by high-temperature metal ingots, reducing safety risks.

[0075] In some embodiments, after the crucible 1 is moved into the smelting chamber 2a, the path between the feed chamber 4a and the smelting chamber 2a is cut off. That is, during the smelting of anode mud, the feed chamber 4a and the smelting chamber 2a are not connected, and the feed chamber 4a and the smelting chamber 2a are each a closed chamber. In this way, the heat generated by the heating device 3 can be reduced as much as possible from being transferred to the feed chamber 4a, which can not only prevent other devices in the feed chamber 4a from being damaged, but also prevent the operator from being scalded by high-temperature gas when opening the feed chamber 4a, further reducing the safety risk.

[0076] For some examples, see Figure 2 The volume of the feed chamber 4a is smaller than that of the smelting chamber 2a. In this way, the time for evacuating the feed chamber 4a and replenishing the protective gas can be reduced, saving more time, improving the smelting efficiency, and reducing the protective gas consumed in each smelting process, thereby reducing the production cost.

[0077] In some embodiments, the processing method includes:

[0078] Step S60, in the process of heating the anode mud in the crucible by the heating device, collecting the salt evaporated from the anode mud during the heating process.

[0079] Salt refers to a class of metal ions or ammonium ions (NH 4 +) Compounds combined with acid radical ions, such as calcium sulfate, copper chloride, sodium acetate, etc. The evaporation of salt refers to the phase change process in which the salt contained in the anode mud is converted from the solid phase to the gas phase during the heating of the anode mud by the heating device 3. By collecting the gas phase salt, the salt is prevented from being adsorbed on other components, causing metal corrosion of each component, thereby affecting the service life of the anode mud processing equipment 100.

[0080] For some examples, see Figure 2 , Figure 4 and Figure 5 The anode mud processing equipment 100 includes a desalting device 5, which has a desalting position, and the desalting position is located above the heating device 3. When the desalting device 5 is located at the desalting position, the desalting device 5 is used to collect salt evaporated from the anode mud during the heating process.

[0081] The desalting position refers to the position where the desalting device 5 is used to collect gaseous salts. At this time, with the plane perpendicular to the up and down directions as the projection plane, the projections of the desalting device 5, the crucible 1 and the heating device 3 at least partially overlap, and the desalting device 5 is roughly located above the heating device 3, so that the desalting device 5 can collect as much salt evaporated from the anode mud as possible.

[0082] It should be noted that, in the present application, down refers to the direction toward the ground, and up refers to the direction opposite to down.

[0083] In one embodiment, the desalination device 5 has an avoidance position, which is located on one side of the desalination position along the horizontal direction, and the desalination device 5 can reciprocate between the desalination position and the avoidance position.

[0084] The avoidance position refers to the position where the desalination device 5 and the heating device 3 are staggered. At this time, with the plane perpendicular to the up and down directions as the projection plane, the projections of the desalination device 5 and the heating device 3 are spaced apart, and the desalination device 5 is not above the heating device 3. In this way, the desalination device 5 will not block the crucible 1, so that the crucible 1 can smoothly enter and exit the heating device 3.

[0085] For some examples, see Figure 4 and Figure 5 The desalination device 5 is formed with a collecting chamber 5a, a flow guide channel 5b and an air extraction port 5c, the collecting chamber 5a is connected with the flow guide channel 5b, the flow guide channel 5b is open downward, and the air extraction port 5c is connected with the collecting chamber 5a. In this way, it is not only easy to align the flow guide channel 5b with the crucible 1, but also the flow path of the gas phase salt can be shortened, the flow resistance of the gas phase salt is reduced, and the collecting effect is improved.

[0086] For example, please refer to Figure 5The gaseous salt moves upward and enters the guide channel 5b, and under the guidance of the guide channel 5b, enters the collecting chamber 5a, and the collecting chamber 5a is used to collect the salt.

[0087] In one embodiment, the crucible 1 extends into the guide channel 5b, and the upper end of the crucible 1 abuts against the wall of the guide channel 5b. In this way, the gap between the crucible 1 and the desalination device 5 can be reduced, and the sealing between the crucible 1 and the desalination device 5 is better, which prevents the gas phase salt from diffusing outward and further improves the collection effect.

[0088] In some embodiments, collecting the salt evaporated from the anode mud during the heating process includes:

[0089] Step S61, exhausting the gas in the collecting chamber through the gas extraction port.

[0090] In this way, the air pressure of the collecting chamber 5a is lower than the air pressure of the diversion channel 5b. In this way, the gas phase salt can spontaneously move to the collecting chamber 5a through the diversion channel 5b, thereby increasing the speed of the desalination device 5 to collect the gas phase salt and reducing the probability of the gas phase salt moving to other devices and causing an impact.

[0091] In some embodiments, collecting the salt evaporated from the anode mud during the heating process includes:

[0092] Step S62, cooling the evaporated salt by a desalination device.

[0093] The cooling of salt refers to the phase change process of salt from gas phase to solid phase. That is to say, the collecting chamber 5a can be used to collect solid phase salt. Compared with gas phase salt, the cooled solid phase salt is easier to collect and process.

[0094] In some embodiments, the molten anode mud is solidified into a metal ingot, comprising:

[0095] Step S41, placing the crucible in a heat preservation device of the anode mud treatment equipment to cool and solidify.

[0096] The heat preservation device 6 can be used to slow down the cooling rate of the anode mud until the metal ingot is cooled to room temperature. Exemplarily, the heat preservation device 6 maintains the cooling rate of the anode mud at 10°C / min (degrees Celsius / minute). By slowing down the cooling rate of the anode mud through the heat preservation device 6, on the one hand, the distribution of radioactive nuclides can be optimized during the fixation process of the anode mud, so that the shell of the metal ingot can fully wrap the nuclides, reduce the radiation generated by the metal ingot, and improve safety. On the other hand, it can reduce or even eliminate the residual stress of the metal ingot, prevent the metal ingot from deformation, cracking, etc., improve the structural stability of the metal ingot, further reduce the probability of radiation radiating outward, and play a better protective role.

[0097] In some embodiments, during the process of heating the anode mud in the crucible by the heating device, the processing method includes:

[0098] Step S31, monitoring the temperature of the anode mud in the crucible by using a thermocouple and an infrared temperature measuring element;

[0099] It should be noted that, since the thermocouple 71 is delayed in measuring the temperature of the anode mud, there is a temperature difference between the temperature measured by the thermocouple 71 and the actual temperature of the anode mud. Therefore, the temperature measured by the thermocouple 71 is not equal to the actual temperature of the anode mud. In addition, the upper side of the crucible 1 is open, that is, the upper side of the anode mud in the crucible 1 is exposed. In this way, during the heating and melting of the anode mud, an oxide film will be formed on the upper surface of the anode mud, and the anode mud below the oxide film will be preferentially converted into a molten state. Since the infrared temperature measuring element 72 can only measure the surface temperature of the anode mud, before the anode mud is completely melted, the temperature measured by the infrared temperature measuring element 72 is also not equal to the actual temperature of the anode mud.

[0100] The temperature of the anode mud in the crucible 1 is monitored jointly by the thermocouple 71 and the infrared temperature measuring element 72. For example, the temperature values ​​measured by the thermocouple 71 and the infrared temperature measuring element 72 are coupled, which can more accurately reflect the real-time temperature of the anode mud and improve the accuracy of temperature measurement.

[0101] Step S32, controlling the output power of the heating device according to the first temperature measurement value measured by the thermocouple and the second temperature measurement value measured by the infrared temperature measuring element.

[0102] That is to say, the first temperature measurement value and the second temperature measurement value are used as the temperature control basis of the heating device 3 to control the output power of the heating device 3, that is, to adjust the heating temperature of the heating device 3. In this way, it can be prevented that the heating temperature of the heating device 3 is too high during the heating and melting process of the anode mud, causing the anode mud in the liquid phase to boil, causing the anode mud to spill out of the crucible 1, or releasing metal vapor from the anode mud to damage other devices, thereby reducing safety risks and ensuring the stability of the melting process.

[0103] In one embodiment, the infrared temperature measuring element 72 is located outside the smelting chamber 2a, which can not only reduce the impact on the temperature field state in the smelting chamber 2a and improve the accuracy of temperature measurement, but also prevent the heat generated by the heating device 3 from damaging the infrared temperature measuring element 72.

[0104] In some embodiments, controlling the output power of the heating device according to the first temperature value measured by the thermocouple and the second temperature value measured by the infrared temperature measuring element includes:

[0105] Step S321, before the second temperature measurement value measured by the infrared temperature measuring element suddenly changes, controlling the output power of the heating device according to the first temperature measurement value measured by the thermocouple;

[0106] In other words, before the oxide film on the upper surface of the anode mud melts, the second temperature value measured by the infrared temperature measuring element 72 is substantially the same as the temperature of the oxide film, and the second temperature value will not change suddenly. Compared with the second temperature value measured by the infrared temperature measuring element 72, the first temperature value at this time is closer to the actual temperature of the anode mud. By controlling the output power of the heating device 3 through the first temperature value, accurate control can be achieved, and the stability of the operation can be improved.

[0107] Step S322, after the second temperature measurement value measured by the infrared temperature measurement component changes suddenly, the output power of the heating device is controlled according to the second temperature measurement value measured by the infrared temperature measurement component.

[0108] That is to say, when the oxide film on the upper surface of the anode mud melts, the infrared temperature measuring element 72 can measure the temperature inside the anode mud, which is the actual temperature of the anode mud. Compared with the first temperature value measured by the thermocouple 71, the second temperature value at this time is closer to the actual temperature of the anode mud. In this way, the output power of the heating device 3 is controlled by the first temperature value first, and then by the second temperature value, so that accurate control can be further achieved and the stability of the operation can be improved.

[0109] The sudden change of the second temperature measurement value refers to the phenomenon that the second temperature measurement value increases in a very short time. For example, when the oxide film on the upper surface of the anode mud begins to melt, the second temperature measurement value rises from 700°C to 1000°C in an instant.

[0110] In some embodiments, the first temperature measurement value is obtained by the actual temperature measurement value measured by the thermocouple 71 and the corresponding regression equation, and the regression equation is Y=aX, where Y represents the first temperature measurement value, X represents the actual temperature measurement value, and a represents the correction coefficient. In this way, by substituting the actual temperature measurement value into the first temperature measurement value calculated in the regression equation, the actual temperature of the anode mud can be more accurately reflected, further improving the stability of the operation.

[0111] In one embodiment, a is between 1.5 and 2. For example, a may be 1.5, 1.6, 1.7, 1.8, 1.9 or 2, etc. By setting a suitable correction coefficient, it can be applicable to different types of thermocouples 71, and the first temperature measurement value can be corrected according to anode mud of different components to improve the accuracy of temperature measurement.

[0112] For some examples, see Figure 2 and Figure 3 The feeding device 4 includes a gate valve 41, which is used to open or close the path between the feeding chamber 4a and the smelting chamber 2a.

[0113] For some examples, see Figure 2 and Figure 3 The feeding device 4 includes a valve driving member 42, and the valve driving member 42 drives the gate valve 41 to move, so as to open or cut off the path between the feeding chamber 4a and the smelting chamber 2a. That is, the valve driving member 42 and the gate valve 41 are in transmission connection, so that the driving force of the valve driving member 42 is transmitted to the gate valve 41, so that the gate valve 41 can spontaneously open or cut off the path between the feeding chamber 4a and the smelting chamber 2a, so that the degree of automation and production efficiency can be improved.

[0114] The valve driver 42 is a structure that can provide power. For example, the valve driver 42 can be a power source such as a motor or a cylinder.

[0115] For some examples, see Figure 4 and Figure 5 The desalination device 5 includes a collecting member 51 and a flow guide member 52. The collecting member 51 is formed with a collecting chamber 5a and an air suction port 5c. At least part of the flow guide member 52 extends into the collecting chamber 5a. The flow guide member 52 is formed with a flow guide channel 5b and an air inlet 52a open downward. The flow guide channel 5b connects the collecting chamber 5a and the air inlet 52a. That is, the gaseous salt moves upward, enters the flow guide channel 5b through the air inlet 52a, and enters the collecting chamber 5a under the guidance of the flow guide channel 5b.

[0116] Please continue reading Figure 5 At least part of the guide member 52 extends into the collecting chamber 5a. In this way, at least part of the guide member 52 extending into the collecting chamber 5a can prevent the solid phase salt from seeping out of the collecting chamber 5a.

[0117] In one embodiment, please refer to Figure 5 The air inlet 52a is formed at the lower end of the guide member 52, and the crucible 1 is formed with an inlet and outlet open upward. The projection surface is a plane perpendicular to the up and down directions, and the projection of the inlet and outlet is located within the projection range of the air inlet 52a. In this way, the air inlet 52a is closer to the inlet and outlet of the crucible 1, and the area of ​​the air inlet 52a is larger than the area of ​​the inlet and outlet, so that the desalination device 5 can better collect gaseous salt and improve the collection effect.

[0118] For some examples, see Figure 5The upper end of the guide member 52 is open to form an outlet 52b, which connects the collecting chamber 5a and the guide channel 5b. The projection of the outlet 52b is located within the projection range of the inlet 52a, taking the plane perpendicular to the up and down direction as the projection plane. After the gaseous salt enters the guide channel 5b, it enters the collecting chamber 5a through the outlet 52b. The outlet 52b is formed at the upper end of the guide member 52, thus shortening the flow path and reducing the flow resistance of the gaseous salt.

[0119] Please continue reading Figure 5 The peripheral side wall of the flow guide 52 gradually tilts toward the middle from bottom to top, that is, the area of ​​the air inlet 52a is larger than the area of ​​the air outlet 52b, and the flow guide 52 is trumpet-shaped, so that not only the resistance of the gas phase salt entering the flow guide channel 5b through the air inlet 52a is small, but the gas phase salt can also be effectively collected from the air inlet 52a with a larger opening area, under the guidance of the flow guide channel 5b, to the air inlet 52a with a smaller opening area, and then enter the collection chamber 5a, thereby improving the collection effect.

[0120] For some examples, see Figure 5 The collecting member 51 is formed with a cooling channel 51a, a liquid inlet 51b and a liquid outlet 51c, both of which are connected to the cooling channel 51a, and the cooling channel 51a is arranged around the outer periphery of the collecting chamber 5a. The cooling channel 51a is used for circulating the cooling medium.

[0121] Exemplarily, the cooling medium enters the cooling channel 51a through the liquid inlet 51b, exchanges heat with the gas phase salt while flowing in the cooling channel 51a, absorbs heat in the gas phase salt, and flows out through the liquid outlet 51c. The specific type of the cooling medium is not limited, for example, the cooling medium can be water or cooling oil.

[0122] For example, see Figure 4 and Figure 5 The cooling channel 51a is arranged around the outer periphery of the collecting chamber 5a, that is, the cooling channel 51a surrounds the circumferential surface of the collecting chamber 5a, so that the cooling medium can fully exchange heat with the gas phase salt in the collecting chamber 5a, so that the gas phase salt is converted into a solid phase after cooling, thereby improving the heat exchange efficiency.

[0123] In some embodiments, the desalination device 5 includes a partition plate, which is disposed in the cooling channel 51a and partitions the cooling channel 51a, and the liquid inlet 51b and the liquid outlet 51c are respectively located on both sides of the partition plate. In other words, the cooling channel 51a is isolated at both ends, and the cooling channel 51a is an open ring structure.

[0124] See also Figure 4The liquid inlet 51b and the liquid outlet 51c are respectively connected to the head and tail ends of the cooling channel 51a, so that the cooling medium can enter from the liquid inlet 51b at the head end of the cooling channel 51a, flow through the entire cooling channel 51a along the circumferential direction, and then flow out from the liquid outlet 51c at the tail end of the cooling channel 51a to take away the heat. In this way, the flow path of the cooling medium in the cooling channel 51a can be extended, and the flow time of the cooling medium in the cooling channel 51a can be increased, so that the cooling medium can more fully absorb and take away the heat, thereby improving the heat exchange efficiency.

[0125] For some examples, see Figure 2 and Figure 3 The anode mud treatment equipment 100 includes a first driving mechanism 8, which is used to drive the crucible 1 to reciprocate between the feed chamber 4a and the smelting chamber 2a. In this way, there is no need for operators to manually control the crucible 1 to reciprocate between the feed chamber 4a and the smelting chamber 2a, which can not only avoid damaging the inert environment and protect the operators, but also improve the degree of automation and production efficiency.

[0126] For some examples, see Figure 2 The first driving mechanism 8 includes a first driving member 81 and a clamping member 82. The first driving member 81 is connected to the clamping member 82 in a transmission manner. The clamping member 82 is used to clamp or release the crucible 1. The first driving member 81 is located outside the feed chamber 4a, and the clamping member 82 is located inside the feed chamber 4a. The clamping member 82 limits the crucible 1 and maintains the stability of the crucible 1. The first driving member 81 is located outside the feed chamber 4a to prevent the high-temperature gas in the smelting chamber 2a from entering the feed chamber 4a when the gate valve 41 is opened, causing damage to the first driving member 81.

[0127] See also Figure 2 The driving force of the first driving member 81 is transmitted to the clamping member 82, so that the clamping member 82 can drive the crucible 1 from the feeding chamber 4a into the smelting chamber 2a or drive the crucible 1 from the smelting chamber 2a into the feeding chamber 4a, thereby improving the degree of automation and production efficiency.

[0128] The first driving member 81 is a structure that can provide power. For example, the first driving member 81 can be a power source such as a motor or a cylinder.

[0129] For some examples, see Figure 2 and Figure 3 The anode mud processing equipment 100 includes a second driving mechanism 9, which is used to drive the crucible 1 to reciprocate in the smelting chamber 2a along the up and down directions to enter or escape from the heating device 3.

[0130] For example, please refer to Figure 2, the opening of the heating chamber faces upward, when the first driving mechanism 8 transfers the crucible 1 from the feeding chamber 4a to the smelting chamber 2a, the second driving mechanism 9 is in driving connection with the crucible 1, and the second driving mechanism 9 drives the crucible 1 to move downward into the heating chamber, and the heating device 3 heats the crucible 1 to convert the anode mud into a molten state. After the heating is completed, the second driving mechanism 9 drives the crucible 1 to move upward out of the heating chamber.

[0131] In addition, when the crucible 1 enters and exits the heating device 3, the crucible 1 moves approximately in the up and down direction, and the movement process of the crucible 1 is relatively stable, thereby improving the operation reliability.

[0132] For some examples, see Figure 2 and Figure 6 The second driving mechanism 9 includes a second driving member 91 and a placing table 92. The second driving member 91 is connected to the placing table 92 by transmission. The crucible 1 is placed on the placing table 92. The second driving member 91 is located outside the smelting chamber 2a, and the placing table 92 is located inside the smelting chamber 2a. The placing table 92 is used to support the crucible 1 and maintain the stability of the crucible 1. The second driving member 91 is located outside the smelting chamber 2a to prevent the high temperature in the smelting chamber 2a from damaging the second driving member 91.

[0133] See also Figure 6 The driving force of the second driving member 91 is transmitted to the placement table 92, so that the placement table 92 can drive the crucible 1 to enter or escape from the heating device 3, thereby improving the degree of automation and production efficiency.

[0134] The second driving member 91 is a structure that can provide power. For example, the second driving member 91 can be a power source such as a motor or a cylinder.

[0135] In the description of this specification, the description with reference to the terms "an embodiment", "some embodiments" and "exemplary" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0136] The various embodiments / implementations provided in this application can be combined with each other without causing any contradiction. The above description is only a preferred embodiment of this application and is not intended to limit this application. For those skilled in the art, this application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

1. A method for treating anode mud, characterized in that: The anode mud processing equipment comprises a crucible, a furnace, a heating device and a feeding device, wherein the crucible is used to hold the anode mud, the furnace is formed with a smelting chamber, the heating device is arranged in the smelting chamber, the feeding device comprises a feeding chamber, and the processing method comprises: Cutting off the path between the feed chamber and the smelting chamber, placing the crucible in the feed chamber, evacuating the feed chamber and the smelting chamber, and replenishing protective gas; Connecting the path between the feed chamber and the smelting chamber, and moving the crucible into the smelting chamber; heating the anode mud in the crucible by a heating device so that the anode mud melts; The molten anode mud solidifies into a metal ingot; The crucible is moved into the feed chamber, the path between the feed chamber and the smelting chamber is cut off, and the metal ingot is taken out.

2. The processing method according to claim 1, characterized in that: After the crucible is moved into the smelting chamber, the path between the feed chamber and the smelting chamber is cut off.

3. The processing method according to claim 1, characterized in that: The processing method comprises: In the process of heating the anode mud in the crucible by the heating device, the salt evaporated from the anode mud during the heating process is collected.

4. The processing method according to claim 3, characterized in that: The anode mud processing equipment comprises a desalting device, which has a desalting position. The desalting position is located above the heating device. When the desalting device is located at the desalting position, the desalting device is used to collect salt evaporated from the anode mud during the heating process.

5. The processing method according to claim 4, characterized in that: The desalination device is formed with a collecting chamber, a guide channel and an air suction port. The collecting chamber is communicated with the guide channel, the guide channel is open downward, and the air suction port is communicated with the collecting chamber.

6. The processing method according to claim 5, characterized in that: Collecting the salt evaporated from the anode mud during the heating process, including: The gas in the collecting chamber is sucked out through the suction port.

7. The processing method according to claim 1, characterized in that: The molten anode mud is solidified into a metal ingot, comprising: The crucible is placed in a heat preservation device of the anode mud treatment equipment to cool and solidify.

8. The processing method according to claim 1, characterized in that: In the process of heating the anode mud in the crucible by the heating device, the processing method comprises: The temperature of the anode mud in the crucible is monitored by a thermocouple and an infrared temperature measuring element; The output power of the heating device is controlled according to the first temperature measurement value measured by the thermocouple and the second temperature measurement value measured by the infrared temperature measuring element.

9. The processing method according to claim 8, characterized in that: According to the first temperature measurement value measured by the thermocouple and the second temperature measurement value measured by the infrared temperature measuring element, the output power of the heating device is controlled, including: Before the second temperature measurement value measured by the infrared temperature measuring element suddenly changes, the output power of the heating device is controlled according to the first temperature measurement value measured by the thermocouple; After the second temperature measurement value measured by the infrared temperature measuring element changes suddenly, the output power of the heating device is controlled according to the second temperature measurement value measured by the infrared temperature measuring element.

10. An anode mud treatment device, characterized in that: Anode mud is treated by the treatment method according to any one of claims 1 to 9, and the anode mud treatment equipment includes a crucible, a furnace, a heating device and a feeding device, the crucible is used to hold the anode mud, the furnace forms a smelting chamber, the heating device is arranged in the smelting chamber, and the feeding device includes a feeding chamber.

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