CN109579517B - Spiral propelling atmosphere sintering furnace for producing ternary lithium battery material - Google Patents
Spiral propelling atmosphere sintering furnace for producing ternary lithium battery material Download PDFInfo
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- CN109579517B CN109579517B CN201910053621.9A CN201910053621A CN109579517B CN 109579517 B CN109579517 B CN 109579517B CN 201910053621 A CN201910053621 A CN 201910053621A CN 109579517 B CN109579517 B CN 109579517B
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- 239000000463 material Substances 0.000 title claims abstract description 67
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 33
- 238000005245 sintering Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 47
- 230000008569 process Effects 0.000 claims abstract description 41
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 230000001681 protective effect Effects 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 239000000498 cooling water Substances 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 4
- 238000009792 diffusion process Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 29
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 238000010924 continuous production Methods 0.000 abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 2
- 239000001301 oxygen Substances 0.000 abstract description 2
- 229910052760 oxygen Inorganic materials 0.000 abstract description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 8
- 229910001416 lithium ion Inorganic materials 0.000 description 8
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000002243 precursor Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000010532 solid phase synthesis reaction Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000009768 microwave sintering Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- 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
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/04—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
- F27B9/042—Vacuum 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
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
- F27B9/22—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on rails, e.g. under the action of scrapers or pushers
-
- 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
- F27D9/00—Cooling of furnaces or of charges therein
-
- 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
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/007—Cooling of charges therein
- F27D2009/0081—Cooling of charges therein the cooling medium being a fluid (other than a gas in direct or indirect contact with the charge)
- F27D2009/0083—Cooling of charges therein the cooling medium being a fluid (other than a gas in direct or indirect contact with the charge) the fluid being water
Abstract
The invention relates to a spiral propelling atmosphere sintering furnace for producing ternary lithium battery materials, which comprises a furnace body, a power system and a supporting mechanism, wherein the furnace body is provided with a furnace body; the furnace also comprises a through hearth, a furnace liner, a feed inlet, a discharge outlet, a spiral conveying rod, a protective gas input and a gas pressure control device and a temperature control device, wherein the through hearth, the furnace liner, the feed inlet, the discharge outlet, the spiral conveying rod, the protective gas input and the gas pressure control device are arranged in the furnace body; the furnace pipe penetrates through the through type hearth from front to back, and both ends of the furnace pipe are sealed by adopting sealing mechanisms; the feeding port is connected to one end of the furnace pipe, and the other end of the furnace pipe is connected to the discharging port; the front section, the middle section and the rear section of the furnace pipe are divided into three process sections according to different temperatures, namely a first process section, a second process section and a third process section. The invention can realize continuous production, ensure the smooth flow of materials along the feed inlet, the furnace liner and the discharge outlet while reducing the oxygen content in the working area, and take the performance and the production efficiency of the materials into account.
Description
Technical Field
The invention relates to the field of preparation of ternary lithium battery materials, in particular to a spiral propelling atmosphere sintering furnace for producing ternary lithium battery materials.
Background
Along with the continuous reduction of the reserves of traditional energy sources (petroleum, natural gas and coal) and the increasingly outstanding environmental deterioration caused by the continuous reduction, the lithium ion battery with high energy density and light weight and rechargeable property is increasingly widely applied to the aspects of electric automobiles, mobile phones, notebook computers, digital cameras, video cameras and the like, and the market of the world lithium ion battery materials is also increasing. The lithium ion battery material mainly comprises lithium cobaltate, lithium manganate, lithium nickelate, lithium iron phosphate, ternary and the like, wherein the ternary lithium battery material has high energy density, good cycle performance and balanced capacity and safety, and is increasingly applied to power automobiles in recent years, and the ternary lithium battery material gradually surpasses the lithium iron phosphate and becomes the main trend of the power battery market.
The structure and the performance of the lithium ion battery material are indistinguishable from those of the preparation process and the equipment, and the lithium ion battery materials produced by different preparation processes and equipment have great differences in the structure and the performance. At present, the method for preparing the lithium ion battery material mainly comprises the methods of solid phase synthesis, chemical precipitation, sol-gel, hydrothermal synthesis, spray degradation and the like, wherein the solid phase synthesis method is convenient for industrial production due to simple process, and has the most wide application in the actual production of the lithium ion battery material. The solid phase synthesis method is carried out at a higher temperature, so that the materials are easy to oxidize, and therefore, domestic enterprises basically adopt batch heat treatment equipment, the production efficiency is lower, and the industrial production is not facilitated. In recent years, some domestic equipment manufacturing enterprises try to develop a push plate kiln, a mesh belt furnace and a rotary kiln which can be applied to continuously producing lithium ion battery materials, but a great gap still exists between the material stability and consistency and intermittent heat treatment equipment. Moreover, these devices are mostly designed according to the production process of lithium iron phosphate materials. For example, patent number CN201587859 describes a horizontal continuous production apparatus for microwave heating of lithium iron phosphate materials; patent number CN102092699 describes a method for preparing lithium iron phosphate by sintering a precursor of lithium iron phosphate and a microwave sintering device. However, the various devices related to the above patent still have some defects, and it is difficult to maintain the production efficiency in the world production and simultaneously compromise the performance stability and consistency of the material. In addition, the inventor also discloses a patent with a patent number of CN 105129762A in the earlier stage, and introduces a belt-type atmosphere sintering furnace for continuously producing the lithium iron phosphate anode material. However, the sintering furnace is mainly applied to the production of lithium iron phosphate, and has some problems for the production of ternary lithium battery materials. Moreover, the inventor finds through repeated experiments that the optimization of the performance of the ternary lithium battery material and the improvement of the production efficiency can be realized through creatively modifying the structure of the sintering furnace.
Disclosure of Invention
Aiming at the defect that the existing lithium battery material production equipment is difficult to consider production efficiency and product performance, the invention provides a continuous spiral propelling atmosphere sintering furnace capable of producing high-performance ternary lithium battery materials.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
a spiral propelling atmosphere sintering furnace for producing ternary lithium battery materials comprises a furnace body, a power system and a supporting mechanism; the furnace also comprises a through hearth, a furnace liner, a feed inlet, a discharge outlet, a spiral conveying rod, a protective gas input and a gas pressure control device and a temperature control device, wherein the through hearth, the furnace liner, the feed inlet, the discharge outlet, the spiral conveying rod, the protective gas input and the gas pressure control device are arranged in the furnace body; the furnace pipe penetrates through the through type hearth from front to back, and both ends of the furnace pipe are sealed by adopting sealing mechanisms; the feeding port is connected to one end of the furnace pipe, and the other end of the furnace pipe is connected to the discharging port; the front section, the middle section and the rear section of the furnace pipe are divided into three process sections according to different temperatures, namely a first process section, a second process section and a third process section.
The length of the first process section is 0.5-1.0 m, and the temperature is 150-400 ℃; the length of the second section process interval is 2.0-3.0 m, and the temperature is 600-800 ℃; the length of the third process section is 1.0-1.5 m, and the temperature is 50-150 ℃; the pressure P of the protective gas in the furnace body is higher than the standard atmospheric pressure P 0 P and P 0 Is p=1.05-1.15P 0 。
The air pressure input and control device in the furnace liner also comprises a vacuum pumping system, wherein the vacuum pumping system consists of a vacuum pump and a diffusion pump; before the protective gas is input, the air in the furnace is exhausted through a vacuumizing system, so that the purity of the protective gas is ensured.
The feed inlet is provided with a screw rod driving discharging device.
The screw type conveying rod is a conveying mechanism of materials, and rod bodies of the screw type conveying rod are formed by splicing and combining threaded blocks with different angles; the first process section selects 30-45-degree threaded blocks, the second process section selects 60-75-degree threaded blocks, and the third process section selects 30-45-degree threaded blocks; the residence time of the ternary lithium battery material in each process interval can be adjusted by adjusting the number of thread blocks at different angles.
The two ends of the furnace liner are sealed by adopting sealing mechanisms, and the sealing mechanisms consist of sealing elements and cooling water jackets which are arranged outside and prevent the sealing elements from failing.
Compared with the prior art, the invention has the beneficial effects that:
the spiral propelling atmosphere sintering furnace adopts the spiral conveying rod as a conveying device, can realize continuous production, has high production efficiency, can reduce the number of operators and saves labor cost. The different process intervals correspond to different treatment stages (drying, preheating, chemical reaction and cooling) of the material, and the microstructure of the material can be improved by controlling the residence time of the material in the different process intervals, so that the performance is optimized. The invention can ensure the smooth flow of the material along the feed inlet, the furnace pipe and the discharge outlet while reducing the oxygen content in the working area, and the performance and the production efficiency of the material are both considered. The invention is expected to be widely applied to the large-scale production of ternary lithium battery materials.
Drawings
Fig. 1 is a schematic diagram of the structure of a spiral propelling atmosphere sintering furnace for producing ternary lithium battery materials.
FIG. 2 is a cross-sectional view of a sealing device with a cooling water jacket.
In the figure: 101-partition plates, 102-supporting mechanisms, 103-through hearths, 104-feed inlets, 105-discharge outlets, 106-furnace bodies, 107-spiral conveying rods, 108-shielding gas input and gas pressure control devices, 109-sealing mechanisms, 110-furnace liners, 111-temperature control devices, 112-power systems, 113-rotating shafts, 114-cooling water jackets, 115-sealing elements and 116-screw drive blanking devices.
Detailed Description
The invention will be further illustrated with reference to specific examples.
As shown in fig. 1 and 2, a spiral propelling atmosphere sintering furnace for producing ternary lithium battery materials comprises: furnace 106, power system 112 and support mechanism 102; in addition, the furnace also comprises a through hearth 103, a furnace 110, a feed inlet 104, a discharge outlet 105, a spiral conveying rod 107, a protective gas input and a gas pressure control device 108 and a temperature control device 111, wherein the through hearth 103, the furnace 110, the feed inlet 104, the discharge outlet 105, the spiral conveying rod 107, the protective gas input and the gas pressure control device 108 are arranged in the furnace; both ends of the furnace pipe are sealed 109 by adopting a sealing mechanism; wherein, the front section, the middle section and the rear section of the furnace pipe are divided into three process sections according to different temperatures.
The temperature control device consists of a heating part, a sensor and an instrument, and temperature control of different process intervals is realized by adjusting parameters of the temperature control device in different intervals.
The invention relates to a spiral propelling atmosphere sintering furnace for producing ternary lithium battery materials, wherein the length of a first process interval is 0.5-1.0 m, and the temperature is 150-400 ℃; the length of the second section process interval is 2.0-3.0 m, and the temperature is 600-800 ℃; the length of the third process section is 1.0-1.5 m, and the temperature is 50-150 ℃; the pressure P of the protective gas in the furnace body is slightly higher than the standard atmospheric pressure P 0 P and P 0 Is p=1.05-1.15P 0 . According to the invention, the pressure of the protective gas in the furnace is slightly higher than the atmospheric pressure of the external air, so that the gas is forced to flow outwards only from the inside of the furnace, the purity of the protective gas in the furnace can be ensured, and the ternary lithium battery material is prevented from being oxidized. If the protective gas is lower than the range of the invention, the external air may enter the furnace to cause the material to be oxidizedMelting, and reducing performance; if the shielding gas is above the range of the present invention, the purpose of preventing oxidation of the material is still achieved, but the outward flow of the gas is accelerated, and the production cost is increased.
The temperature control device 111 of the spiral propelling atmosphere sintering furnace for producing the ternary lithium battery material consists of a heating element, a sensor and a PLC control element, and can monitor the temperature of a working area in real time and adjust the temperature appropriately.
The invention relates to a spiral propelling atmosphere sintering furnace for producing ternary lithium battery materials, wherein an air pressure input and control device in a furnace liner also comprises a vacuumizing system, and the vacuumizing system consists of a vacuum pump and a diffusion pump; before the protective gas is input, the air in the furnace is exhausted through a vacuumizing system, and then the protective gas such as nitrogen, argon and the like is introduced.
The invention relates to a spiral propelling atmosphere sintering furnace for producing ternary lithium battery materials, wherein a feed port is provided with a screw driving blanking device 116. The purpose of this device is to allow smooth entry of material into the furnace. Because the pressure in the furnace is higher than the external atmospheric pressure, without the device, the material is difficult to enter the furnace by utilizing the self weight of the material.
The invention relates to a spiral propelling atmosphere sintering furnace for producing ternary lithium battery materials, wherein a conveying mechanism of the materials is a spiral conveying rod 107, and the spiral conveying rod is formed by splicing and combining threaded blocks with different angles; the first process section selects 30-45-degree threaded blocks, the second process section selects 60-75-degree threaded blocks, and the third process section selects 30-45-degree threaded blocks; the residence time of the material in the process section can be shortened by the small-angle (30-45 degrees) screw blocks, and the residence time of the material in the process section can be prolonged by the large-angle (60-75 degrees) screw blocks, so that the residence time of the ternary lithium battery material in each process section can be adjusted by adjusting the number of the screw blocks with different angles. In addition, since the transfer rod is easily worn in production, the screw block should be produced using cemented carbide having a hardness of more than 60 HRC.
In order to prevent air from entering the furnace, the two ends of the furnace liner are sealed 109 by adopting a sealing mechanism; the sealing mechanism consists of a sealing element and a cooling water jacket 114 that prevents the sealing element 115 from failing outside. The cooling water jacket is formed by welding copper plates with good heat conductivity, and the sealing element is made of high-temperature-resistant silica gel resin. During cooling, cooling water enters from the low end of the water jacket and is output from the high end of the water jacket, so that the temperatures of the water jacket and the sealing element are effectively reduced.
Example 1:
in the embodiment, a ternary lithium battery material precursor is prepared by adopting a technology known in the art, and then the precursor material is put into a spiral propelling atmosphere sintering furnace for heat treatment.
(1) The evacuation system is adopted to exhaust the air in the furnace liner, then argon is input as shielding gas, and the gas output rate is adjusted, so that the relationship between the gas pressure in the furnace body and the external atmospheric pressure is as follows: p=1.05p 0 ；
(2) And (3) adjusting related parameters to ensure that the temperature of each section in the furnace is as follows: the first section is 150 ℃, the second section is 700 ℃, and the third section is 200 ℃;
(3) The angle and the number of the thread blocks are adjusted to ensure that the residence time of the material in the first section is 2 hours, the residence time of the material in the second section is 12 hours, and the residence time of the material in the third section is 5 hours;
(4) The materials output from the discharge hole are crushed, sieved and sampled, and tested, and the battery capacity reaches 198mAh/g (0.2C).
Example 2:
the other operations of this example were the same as those of example 1, except that the second stage was conducted at a section treatment temperature of 750 hours for a treatment time of 10 hours.
The materials prepared in this example were crushed, sieved and sampled and tested to achieve a battery capacity of 195mAh/g (0.2C).
Comparative example 1:
the process parameters such as air pressure, temperature and treatment time of this comparative example were the same as those of example 1, except that the equipment used was an atmosphere protecting bell jar furnace and the treatment mode was batch type.
The materials prepared in this comparative example were crushed, sieved and sampled, and tested to achieve a battery capacity of 190mAh/g (0.2C).
The results of the above examples and comparative examples show that the performance of the ternary lithium battery material prepared by adopting the spiral propelling atmosphere sintering furnace is not weaker than that of an atmosphere protection bell furnace for intermittent treatment, but the production efficiency is obviously higher than that of the atmosphere protection bell furnace, and the ternary lithium battery material has high application value.
The present invention is not limited to the preferred embodiments, and any simple modification, equivalent replacement, and improvement made to the above embodiments by those skilled in the art without departing from the technical scope of the present invention, will fall within the scope of the present invention.
Claims (4)
1. A spiral propelling atmosphere sintering furnace for producing ternary lithium battery materials comprises a furnace body, a power system and a supporting mechanism; the method is characterized in that: the furnace also comprises a through hearth, a furnace liner, a feed inlet, a discharge outlet, a spiral conveying rod, a protective gas input and a gas pressure control device and a temperature control device, wherein the through hearth, the furnace liner, the feed inlet, the discharge outlet, the spiral conveying rod, the protective gas input and the gas pressure control device are arranged in the furnace body; the furnace pipe penetrates through the through type hearth from front to back, and both ends of the furnace pipe are sealed by adopting sealing mechanisms; the feeding port is connected to one end of the furnace pipe, and the other end of the furnace pipe is connected to the discharging port; the front section, the middle section and the rear section of the furnace pipe are divided into three process sections according to different temperatures, namely a first process section, a second process section and a third process section;
the length of the first process section is 0.5-1.0 m, and the temperature is 150-400 ℃; the length of the second section process interval is 2.0-3.0 m, and the temperature is 600-800 ℃; the length of the third process section is 1.0-1.5 m, and the temperature is 50-150 ℃; the pressure P of the protective gas in the furnace body is higher than the standard atmospheric pressure P 0 P and P 0 Is p=1.05-1.15P 0 ；
The screw type conveying rod is a conveying mechanism of materials, and rod bodies of the screw type conveying rod are formed by splicing and combining threaded blocks with different angles; the first process section selects 30-45-degree threaded blocks, the second process section selects 60-75-degree threaded blocks, and the third process section selects 30-45-degree threaded blocks; the residence time of the ternary lithium battery material in each process interval can be adjusted by adjusting the number of thread blocks at different angles.
2. The spiral propelling atmosphere sintering furnace for producing ternary lithium battery materials according to claim 1, wherein: the air pressure input and control device in the furnace liner also comprises a vacuum pumping system, wherein the vacuum pumping system consists of a vacuum pump and a diffusion pump; before the protective gas is input, the air in the furnace is exhausted through a vacuumizing system, so that the purity of the protective gas is ensured.
3. The spiral propelling atmosphere sintering furnace for producing ternary lithium battery materials according to claim 1, wherein: the feed inlet is provided with a screw rod driving discharging device.
4. The spiral propelling atmosphere sintering furnace for producing ternary lithium battery materials according to claim 1, wherein: the two ends of the furnace liner are sealed by adopting sealing mechanisms, and the sealing mechanisms consist of sealing elements and cooling water jackets which are arranged outside and prevent the sealing elements from failing.
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