Automatic opening and closing type molten salt electrolytic bath heating furnace

Abstract

The invention particularly provides an automatic opening and closing type molten salt electrolytic bath heating furnace. The heating furnace comprises a furnace shell and a heating rod, the furnace shell can rotate along the rotating shaft so as to realize opening or closing; the heating rod is mounted in the furnace shell and is connected with the connecting wire to realize a heating function; the interior of the furnace shell and the outer sides of the heating rods are filled with heat preservation cotton. When the energy income of the electrolytic bath is insufficient, energy is supplemented through electric furnace heating, and when the energy of the electrolytic bath is excessive, the furnace shell is opened in a cylinder driving mode to increase the heat dissipation of the electrolytic bath and ensure that the electrolyte crusting phenomenon cannot be generated around the electrolytic bath, so that the workload in the production operation process can be reduced, and the safety risk is reduced; the electrolysis efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of powder metallurgy, and particularly to an automatically opening and closing molten salt electrolytic cell heating furnace. Background Art

[0002] Electrolytic production is a process of reducing metal ions into liquid metal by passing direct current through a eutectic mixture molten salt. For existing electrolytic cell equipment, before starting the cell, a melting furnace is used to melt the molten salt electrolyte in advance and then add it to the electrolytic cell for starting the cell operation. And heat preservation materials need to be wrapped on the outer wall of the electrolytic cell to maintain the heat balance required for electrolytic production and prevent excessive temperature changes during the electrolysis process.

[0003] However, during the normal production process of the electrolytic cell, operations such as pole changing and feeding are required. During the operation process, due to energy loss and material input, the original energy balance of the electrolytic cell is often damaged, resulting in excessive temperature changes in the electrolytic cell and the generation of a "crust" phenomenon around it. This not only requires a large amount of human and material resources, but also reduces the electrolysis efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatically opening and closing molten salt electrolytic cell heating furnace, which can solve the problem that the temperature inside the electrolytic cell is prone to change in actual applications of existing electrolytic cells.

[0005] The technical solution of the present invention is as follows: An automatically opening and closing molten salt electrolytic cell heating furnace, the heating furnace includes: a furnace shell and heating rods; the furnace shell can rotate along a rotating shaft to achieve opening or closing; the heating rods are installed in the furnace shell and are connected to a wiring to achieve a heating function; heat preservation cotton is filled inside the furnace shell and outside the heating rods.

[0006] Further, the furnace shell is a structure of two semi-circular hollow furnace covers made of stainless steel. When the furnace shell is closed, the heating furnace realizes heating and heat preservation functions; when the furnace shell is opened, the heating furnace realizes a heat dissipation function.

[0007] Further, the furnace cover can rotate 180° clockwise or counterclockwise along the rotating shaft, and the rotation process is powered by a cylinder.

[0008] Further, the heating rods are coated with insulating ceramic sleeves and are fixed in the vertical through holes on the inner wall of the furnace shell.

[0009] Further, the number of the rotating shafts is two, and the installation positions can be on the same side of the electrolytic cell or on the opposite sides of the electrolytic cell.

[0010] Further, when the rotating shaft is installed on the same side of the electrolytic cell, the rotating shaft drives one of the two furnace covers to rotate clockwise and the other to rotate counterclockwise, realizing the opposite opening of the two furnace covers; when the rotating shaft is installed on the opposite sides of the electrolytic cell, the rotating shaft drives the two furnace covers to rotate clockwise or counterclockwise simultaneously, realizing the diagonal opening of the two furnace covers.

[0011] Further, the outside of the furnace shell is connected to the power cabinet.

[0012] Further, an intelligent temperature control meter is installed on the power cabinet, which can adjust the heating rate of the heating rod.

[0013] Further, a temperature measuring thermocouple is installed inside the furnace shell, which can detect the heating temperature inside the furnace shell. Compared with the existing technology, the advantages of the present invention are as follows:

[0014] 1. When the energy income of the electrolytic cell is insufficient, energy is supplemented by heating with the heating rod; when the energy of the electrolytic cell is excessive, the furnace shell is opened by the driving method of the cylinder to increase the heat dissipation of the electrolytic cell, ensuring that there will be no phenomenon of electrolyte "crusting" around the electrolytic cell.

[0015] 2. The control system can automatically control the heating and the cylinder switch. Through the thermocouple, the start-up (molten electrolyte melting) of the electrolytic cell and the continuous production (anode replacement, feeding, electrolytic cell temperature control) can be realized, which can reduce the workload in the production operation process, reduce the safety risk, and improve the electrolysis efficiency.

[0016] 3. It can prevent the molten electrolyte added during the slot opening from freezing on the electrode, resulting in the inability to conduct current between the electrodes and the failure of the electrolysis process to occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of an electric heating furnace for an automatic opposite-opening electrolytic cell provided by the present invention;

[0018] Figure 2 is a schematic structural diagram of an electric heating furnace for an automatic diagonal-opening electrolytic cell provided by the present invention;

[0019] In the figure: 1, furnace shell; 2, heat insulation cotton; 3, heating rod; 4, insulating ceramic sleeve; 5, power connection wire; 6, temperature measuring thermocouple; 7, power cabinet; 8, cylinder; 9, electrolytic cell. DETAILED DESCRIPTION OF THE INVENTION

[0020] The technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings and specific embodiments. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] As shown Figure 1 - Figure 2 in the figure, an automatically opening and closing molten salt electrolytic cell heating furnace includes a furnace shell 1 and heating rods 3; the furnace shell 1 is a hollow furnace hood structure composed of two semi - circles, made of stainless steel, and can rotate 180° clockwise or counter - clockwise along the rotating shaft. The number of the rotating shafts is two, and the installation positions can be on the same side of the electrolytic cell 9 or on the opposite side of the electrolytic cell 9. When installed on the same side of the electrolytic cell 9, the rotating shaft drives one of the two furnace hoods to rotate clockwise and the other to rotate counter - clockwise, realizing the opening of the two furnace hoods opposite to each other, as shown Figure 1 in the figure; when the rotating shaft is installed on the opposite side of the electrolytic cell 9, the rotating shaft drives the two furnace hoods to rotate clockwise or counter - clockwise simultaneously, realizing the diagonal opening of the two furnace hoods, as shown Figure 2 in the figure. The power for the rotation process is provided by a cylinder 8. The bottom of the furnace hood is equipped with floor wheels and is embedded on the guide rail. The hydraulic rod is pushed by the cylinder 8 to further drag the floor wheels to realize the rotation function of the semi - circular furnace hood, and then the opening or closing of the furnace shell 1 is realized. When the furnace shell 1 is closed, the heating furnace realizes the heating and heat - preservation functions; when the furnace shell 1 is opened, the heating furnace realizes the heat - dissipation function; 6 heating rods 3 are evenly installed on each semi - circular furnace hood for heating. The outer layer of the heating rod 3 is coated with an insulating ceramic sleeve 4, fixed in the vertical through - holes on the inner wall of the furnace shell 1, and connected to the wiring to realize the heating function. And heat - insulating cotton 2 is filled outside the insulating ceramic sleeve 4 and inside the furnace shell 1 for heat preservation during the heating process. The outside of the furnace shell 1 is connected to a power cabinet 7. An intelligent temperature - control meter is installed on the power cabinet 7, which can adjust the heating rate of the heating rod 3. Thermocouples 6 for temperature measurement are evenly installed inside the furnace shell 1, which can detect the heating temperature inside the furnace shell 1. The intelligent temperature - control meter and the thermocouples 6 jointly realize the function of electric control real - time feedback regulation. When the temperature inside the furnace shell 1 is greater than a certain value, the furnace shell 1 automatically opens and alarms. When it is lower than a certain value, it automatically heats up.

[0022] The implementation principle of an automatic opening and closing molten salt electrolytic cell heating furnace in this embodiment is as follows: When grooving, first dry the water vapor in the cell to raise the temperature of the internal components of the cell, avoiding the explosion and splashing of materials caused by the electrolyte coming into contact with water. More importantly, it can prevent the molten electrolyte added during grooving from freezing on the electrodes, resulting in non-conduction of current between the electrodes. When the electrolytic cell 9 is started, a mixture of potassium chloride and lithium chloride is added to the electrolytic cell 9. The furnace shell 1 is controlled to close by the cylinder 8 to start the heating process. The thermocouple 6 in the furnace shell 1 monitors the temperature inside the furnace shell 1 in real time. The intelligent temperature control meter on the power cabinet 7 can adjust the heating rate of the heating rod 3. The heating temperature of the heating furnace can reach 1000°C, and the temperature of the radiation heating electrolytic cell 9 can reach 600°C. During continuous production, when the temperature in the electrolytic cell 9 fluctuates due to anode replacement or feeding, the intelligent temperature control meter on the power cabinet 7 is used to maintain the energy balance of the electrolytic cell. When cooling is required, the cylinder 8 drives the two furnace covers to rotate. According to the installation positions of the two rotating shafts, the furnace shell 1 can be opened obliquely or in a split manner, and the temperature of the electrolytic cell body can be controlled according to actual production requirements.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "left end", "right end", "above", "below", "outer side", "inner side", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0024] In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0025] The above-described embodiments only represent one implementation manner of the present invention, and the description is relatively specific and detailed. However, it should not be construed as a limitation of the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. An automatically opening and closing molten salt electrolytic cell heating furnace, characterized in that, The device includes: a furnace shell (1) and heating rods (3); the furnace shell (1) can rotate along a rotating shaft to achieve opening or closing; the heating rods (3) are installed in the furnace shell (1) and are connected to a wiring to achieve the heating function; the inside of the furnace shell and the outside of the heating rods (3) are filled with heat-insulating cotton (2).

2. The automatic opening and closing molten salt electrolytic cell heating furnace according to claim 1, wherein: The furnace shell (1) is composed of two hollow semi-circular furnace covers, made of stainless steel. When the furnace shell (1) is closed, the heating furnace realizes the heating and heat-preservation functions; when the furnace shell (1) is opened, the heating furnace realizes the heat dissipation function.

3. An automatically opening and closing molten salt electrolytic cell heating furnace according to claim 2, characterized in that: The furnace cover can rotate 180° clockwise or counterclockwise along the rotating shaft, and the rotation process is powered by a cylinder (8).

4. An automatically opening and closing molten salt electrolytic cell heating furnace according to claim 1, characterized in that: The heating rods (3) are coated with insulating ceramic sleeves (4) and are fixed in the vertical through holes on the inner wall of the furnace shell (1).

5. An automatic opening and closing molten salt electrolytic cell heating furnace according to claim 1, characterized in that: The number of the rotating shafts is two, and the installation positions can be on the same side of the electrolytic cell (9) or on the opposite sides of the electrolytic cell (9).

6. The automatic opening and closing molten salt electrolysis cell heating furnace according to claim 5, wherein: When the rotating shafts are installed on the same side of the electrolytic cell (9), the cylinder (8) drives one of the two furnace covers to rotate clockwise and the other to rotate counterclockwise, realizing the opposite opening of the two furnace covers; when the rotating shafts are installed on the opposite sides of the electrolytic cell (9), the rotating shafts drive the two furnace covers to rotate clockwise or counterclockwise simultaneously, realizing the diagonal opening of the two furnace covers.

7. An automatically opening and closing molten salt electrolytic cell heating furnace according to claim 1, characterized in that: The outside of the furnace shell (1) is connected to a power cabinet (7).

8. An automatically opening and closing molten salt electrolytic cell heating furnace according to claim 7, characterized in that: An intelligent temperature control meter is installed on the power cabinet (7), which can adjust the heating rate of the heating rods.

9. An automatic opening and closing molten salt electrolytic cell heating furnace according to claim 1, characterized in that: A temperature-measuring thermocouple (6) is installed inside the furnace shell (1), which can detect the heating temperature inside the furnace shell (1).

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