WO2023050130A1 - Processing method and production line for lithium battery positive electrode material - Google Patents

Processing method and production line for lithium battery positive electrode material Download PDF

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Publication number
WO2023050130A1
WO2023050130A1 PCT/CN2021/121640 CN2021121640W WO2023050130A1 WO 2023050130 A1 WO2023050130 A1 WO 2023050130A1 CN 2021121640 W CN2021121640 W CN 2021121640W WO 2023050130 A1 WO2023050130 A1 WO 2023050130A1
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positive electrode
electrode material
lithium battery
production line
crusher
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PCT/CN2021/121640
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French (fr)
Chinese (zh)
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李远兵
徐娜娜
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武汉科技大学
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • 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
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02—Cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • the invention relates to a processing method and a production line for lithium battery cathode materials, belonging to the technical field of lithium battery preparation.
  • Lithium-ion batteries are widely used in 3C digital products, energy storage and automotive power, etc., and are mainly composed of four parts: positive electrode, negative electrode, separator and electrolyte. Among them, the consumption of positive electrode materials accounts for as high as 30-40%.
  • the positive electrode material of a lithium battery is composed of Li, Co, Mn, Ni, etc.
  • the preparation process is usually to put the raw material in a sagger and fire it at 400-1000°C.
  • the roller kiln is mostly used because of its advantages such as easy control of the atmosphere, uniform temperature field, large output, low cost, and easy automation.
  • the Li and Co compounds melt and infiltrate into the pores of the sagger, and react with the constituent components to induce cracks and peeling off of the sagger body.
  • the reaction substances stripped from the sagger degrade the quality of the positive electrode material; on the other hand, the sagger is damaged due to cracks, and the damaged sagger also has the disadvantage of reducing the activity of the fired positive electrode material during recycling.
  • the powder of lithium battery cathode materials is fired in a sagger as a carrier, and its firing efficiency is low. At present, the overall production capacity of lithium battery cathode materials in China is far below the actual demand.
  • the anode materials of lithium batteries are calcined in a sagger, and the service life of the sagger is an average of 20 to 30 furnaces.
  • the consumption of saggers for roasting lithium battery cathode materials in China was as high as 43,000 tons. Due to the reaction between the positive electrode material and the sagger and the penetration of the positive electrode material into the microstructure of the sagger, the discarded sagger becomes a solid hazardous waste that is difficult to handle, causing huge pressure on the environment.
  • saggars are being developed towards the direction of coating the surface of the saggar with less reactive substances or improving the thermal shock resistance of the sagger itself.
  • the object of the present invention is to solve the existing above-mentioned problems and provide a processing method and production line for lithium battery cathode materials.
  • the production line is environmentally friendly, simple and efficient, and the production line for lithium battery cathode materials can realize the The continuous mass production of materials has great industrialization prospects.
  • the processing method of the positive electrode material of the lithium battery comprises the following steps:
  • the spheroidized positive electrode material or block positive electrode material is directional transported to the roasting system via a downwardly inclined conveyor belt for roasting and cooling;
  • the spherical positive electrode material has an average diameter of 5-20 cm, a porosity ⁇ 5%, and a sphericity ⁇ 0.85.
  • the length, width and height of the bulk positive electrode material range from 5 to 20 cm, and the porosity is ⁇ 3.5%.
  • the present invention also provides a production line for processing positive electrode materials of lithium batteries, including a mixing machine, a molding system, a roasting system, a crusher and a receiving machine arranged in sequence, the discharge port of the mixing machine and the granulation system between the granulation system and the feed port of the roasting system, and between the discharge port of the roasting system and the feed port of the crusher are respectively connected by conveyor belts, and the discharge port of the crusher is set to collect materials car.
  • the conveyor belt between the discharge port of the mixer and the granulation system is inclined to the molding system side
  • the conveyor belt between the granulation system and the feed inlet of the roasting system is inclined to the roasting system side
  • the conveyor belt between the discharge port of the roasting system and the feed port of the crusher is inclined to the side of the crusher.
  • the molding system is a granulator that rolls into balls or machine-presses into balls, or a screw press that machine-presses into blocks.
  • the roasting system is one of a rotary kiln, a shaft kiln, a swing kiln, a tunnel kiln or a shuttle kiln.
  • an air cooling device is arranged at the discharge port of the roasting system.
  • the mixer, molding system, roasting system and crusher are all equipped with a dust removal system.
  • the crusher adopts a jaw crusher.
  • the positive electrode material of the lithium battery is made into balls or blocks by the molding system and then entered into the roasting system for roasting, which is different from the way of roasting powder in the traditional sagger.
  • the contact area of the cluster is minimized, and the contact time is relatively short, which can maximize the avoidance of physical/chemical reactions between the lining material and the positive electrode material during the firing process, thereby improving the pass rate of the lithium battery positive electrode material after firing;
  • the present invention does not require loading and unloading of matching saggers, can maximize roasting efficiency, increase production speed, realize continuous mass production of lithium battery positive electrode materials, improve fuel heating efficiency, and relieve raw material supply pressure in the energy industry;
  • the present invention does not need to use a sagger for storage, avoids the enrichment of carbon dioxide by-products next to the battery raw materials during the roasting process, has low pollution to the fired product and has a large production capacity, and can meet the requirements of its frequent use. It can replace The combination of traditional roller kiln and sagger has a promising market prospect;
  • the present invention has the characteristics of environmental friendliness, simplicity and high efficiency; the equipped lithium battery positive electrode material production line can solve existing technical problems, realize continuous mass production of lithium battery positive electrode materials, and has great industrialization prospects.
  • Fig. 1 is the schematic diagram of the production line structure of embodiment 2-5 in the present invention.
  • Fig. 2 is a schematic diagram of the production line structure of Embodiment 6 of the present invention.
  • the production line of lithium battery positive electrode material of the present invention comprises the mixing machine 1, forming system 3, roasting system 4, crusher 5 and receiving machine 6 that are arranged in sequence, the discharge port of described mixing machine 1 and granulation Between the systems 3, between the granulation system 3 and the feed port of the roasting system 4, between the discharge port of the roasting system 4 and the feed port of the crusher 5 are respectively connected by a conveyor belt 2, and the crusher The discharge port of 5 is provided with receiving car 6.
  • the conveyor belt between the discharge port of the mixer 1 and the granulation system 3 is inclined to the molding system 3 side, and the conveyor belt 2 between the granulation system 3 and the feed port of the roasting system 4 It is inclined to the side of the roasting system, and the conveyor belt 2 between the discharge port of the roasting system 4 and the feed port of the crusher 5 is inclined to the side of the crusher 5 .
  • the molding system 3 is a granulator that rolls into balls or machine-presses into balls, or a screw press that machine-presses into blocks.
  • the roasting system 4 is one of a rotary kiln, a shaft kiln, a swing kiln, a tunnel kiln or a shuttle kiln, and an air cooling device is arranged at the outlet of the roasting system 4 .
  • the mixer 1, molding system 3, roasting system 4 and crusher 5 are all equipped with a dust removal system.
  • the crusher 5 is a jaw crusher.
  • the processing method of lithium battery cathode material of the present invention comprises the following steps:
  • the positive electrode material powder is subjected to high-speed centrifugal granulation in the molding system 3 to form a spherical positive electrode material with high density and high sphericity; the average diameter of the spherical positive electrode material is 5 cm, and the porosity is 3%. , the sphericity is 0.88;
  • step (3) The spheroidized positive electrode material obtained in step (2) is directional transported to the feed port of the roasting system 4 via a downwardly inclined conveyor belt, and the roasting system 4 can use a rotary kiln; the spherical positive electrode material is roasted in the roasting system 4 and Cooling; the calcination temperature is 550°C, the time is 12h, the cooling rate is 10°C/min, and cooled to normal temperature;
  • the processing method of lithium battery cathode material of the present invention comprises the following steps:
  • the positive electrode material powder is subjected to high-speed centrifugal granulation in the molding system 3 to form a spherical positive electrode material with high density and high sphericity; the average diameter of the spherical positive electrode material is 20 cm, and the porosity is 5%. , the sphericity is 0.85;
  • step (3) The spheroidized positive electrode material obtained in step (2) is directional transported to the feed port of the roasting system 4 via a downwardly inclined conveyor belt, and the roasting system 4 can use a rotary kiln; the spherical positive electrode material is roasted in the roasting system 4 and Cooling; the calcination temperature is 700°C, the time is 12h, the cooling rate is 10°C/min, and cooled to normal temperature;
  • the processing method of lithium battery cathode material of the present invention comprises the following steps:
  • the positive electrode material powder is subjected to high-speed centrifugal granulation in the molding system 3 to form a spherical positive electrode material with high density and high sphericity; the average diameter of the spherical positive electrode material is 15 cm, and the porosity is 4.5%. , the sphericity is 0.95;
  • step (3) The spheroidized positive electrode material obtained in step (2) is directional transported to the feed port of the roasting system 4 via a downwardly inclined conveyor belt, and the roasting system 4 can use a rotary kiln; the spherical positive electrode material is roasted in the roasting system 4 and Cooling; the calcination temperature is 750°C, the time is 3h, the cooling rate is 10°C/min, and cooled to normal temperature;
  • the processing method of lithium battery cathode material of the present invention comprises the following steps:
  • the positive electrode material powder is subjected to high-speed centrifugal granulation in the molding system 3 to form a spherical positive electrode material with high density and high sphericity; the average diameter of the spherical positive electrode material is 15 cm, and the porosity is 5%. , the sphericity is 0.86;
  • step (3) The spheroidized positive electrode material obtained in step (2) is directional transported to the feed port of the roasting system 4 via a downwardly inclined conveyor belt, and the roasting system 4 can use a rotary kiln; the spherical positive electrode material is roasted in the roasting system 4 and Cooling; the calcination temperature is 720°C, the time is 8h, the cooling rate is 10°C/min, and cooled to normal temperature;
  • Embodiment 6 is a diagrammatic representation of Embodiment 6
  • the processing method of lithium battery cathode material of the present invention comprises the following steps:
  • the positive electrode material powder is pressed into blocks in the molding system 3 (using a screw press) to form a block-shaped positive electrode material with high density and high sphericity.
  • the plate pressing condition adopts double-sided pressing or Static pressure forming, the length, width and height of the block positive electrode material range from 5 to 20 cm, and the porosity is ⁇ 3.5%;
  • step (3) The spheroidized positive electrode material obtained in step (2) is directional transported to the feed port of the roasting system 4 via a downwardly inclined conveyor belt, and the roasting system 4 can use a rotary kiln; the spherical positive electrode material is roasted in the roasting system 4 and Cooling; the calcination temperature is 600°C, the time is 6h, and the cooling rate is 10°C/min; the temperature is 700-750°C, the time is 1.5-2.5h, and the cooling rate is 5°C/min;

Abstract

The present invention relates to a processing method and a production line for a lithium battery positive electrode material. The processing method for lithium battery positive electrode material comprises the following steps: (1) after uniformly mixing positive electrode material powder, directionally conveying the positive electrode material powder to a molding system by means of a conveyor belt inclined downwards; (2) performing high-speed granulation or briquetting on the positive electrode material powder in the molding system to form a spheronized positive electrode material or a block-shaped positive electrode material; (3) directionally conveying the spheronized positive electrode material or the block-shaped positive electrode material to a calcination system by means of the conveyor belt inclined downwards to be calcined and cooled; (4) continuing to convey the calcined and cooled spheronized positive electrode material to a crusher by means of the conveyor belt, to be crushed and then directly into a material collection vehicle for collection. The production line disclosed in the present invention is environmentally friendly, simple and efficient. When the production of the positive electrode material of the lithium battery is carried out using the present production line, continuous mass production of the lithium battery positive electrode material can be achieved, and the production line has great industrialization prospects.

Description

一种锂电池正极材料的加工方法及生产线A kind of processing method and production line of positive electrode material of lithium battery 技术领域technical field
本发明涉及一种锂电池正极材料的加工方法及生产线，属于锂电池制备技术领域。The invention relates to a processing method and a production line for lithium battery cathode materials, belonging to the technical field of lithium battery preparation.
背景技术Background technique
锂离子电池在3C数码产品、能源储备及汽车动力等领域有极为广泛的应用，其主要由正极、负极、隔膜和电解液四个部分组成。其中，正极材料的耗费占比高达30～40％。锂电池的正极材料由Li、Co、Mn、Ni等构成，其制备工艺通常是将原料物质装在匣钵中并以400～1000℃进行烧成。在高温固相反应工序中，辊道窑由于其气氛易控制、温度场均一、产量较大且成本低，便于实现自动化等优点而多被采用。但在此过程中，Li及Co化合物熔融而渗透到匣钵的气孔中，与构成成分反应而诱发匣钵本体的裂隙及剥离。一方面，匣钵剥离的反应物质使正极材料的品质降低；另一方面，匣钵因裂隙而破损，破损的匣钵在循环使用的过程中也存在降低所焙烧正极材料活性的弊端。其次，在辊道窑中以匣钵为承装载体焙烧锂电池正极材料的粉体，其烧成效率较低，目前国内的锂电池正极材料的总体产能远远达不到实际需求量。Lithium-ion batteries are widely used in 3C digital products, energy storage and automotive power, etc., and are mainly composed of four parts: positive electrode, negative electrode, separator and electrolyte. Among them, the consumption of positive electrode materials accounts for as high as 30-40%. The positive electrode material of a lithium battery is composed of Li, Co, Mn, Ni, etc. The preparation process is usually to put the raw material in a sagger and fire it at 400-1000°C. In the high-temperature solid-phase reaction process, the roller kiln is mostly used because of its advantages such as easy control of the atmosphere, uniform temperature field, large output, low cost, and easy automation. However, during this process, the Li and Co compounds melt and infiltrate into the pores of the sagger, and react with the constituent components to induce cracks and peeling off of the sagger body. On the one hand, the reaction substances stripped from the sagger degrade the quality of the positive electrode material; on the other hand, the sagger is damaged due to cracks, and the damaged sagger also has the disadvantage of reducing the activity of the fired positive electrode material during recycling. Secondly, in the roller kiln, the powder of lithium battery cathode materials is fired in a sagger as a carrier, and its firing efficiency is low. At present, the overall production capacity of lithium battery cathode materials in China is far below the actual demand.
从行业协会的统计数据来看，锂电池正极材料用匣钵承装煅烧，而匣钵的使用寿命为平均20～30炉次。仅2019年，中国锂电池正极材料焙烧用匣钵的消耗量就高达4.3万吨。由于正极材料与匣钵之间的反应及正极材料向匣钵微结构中的渗透，导致废弃匣钵成为难以处理的固体危废，对环境造成巨大的压力。目前，匣钵是朝着将反应活性较小的物质涂覆于匣钵的表面或提高匣钵本身热冲击抵抗性的方向开发。但是，由于涂覆的复杂性而难以大量生产，或存在因与匣钵材料的热膨胀系数差异而出现剥离的缺点。另外，匣钵本体与需焙烧的电池材料之间的反应仅仅只是反应程度降低而已，从本质上而言，无法断绝其与正极活性物质反应，也无法实现正极材料连续化的大批量生产。According to the statistical data of the industry association, the anode materials of lithium batteries are calcined in a sagger, and the service life of the sagger is an average of 20 to 30 furnaces. In 2019 alone, the consumption of saggers for roasting lithium battery cathode materials in China was as high as 43,000 tons. Due to the reaction between the positive electrode material and the sagger and the penetration of the positive electrode material into the microstructure of the sagger, the discarded sagger becomes a solid hazardous waste that is difficult to handle, causing huge pressure on the environment. Currently, saggars are being developed towards the direction of coating the surface of the saggar with less reactive substances or improving the thermal shock resistance of the sagger itself. However, mass production is difficult due to the complexity of coating, or there is a disadvantage of peeling due to the difference in thermal expansion coefficient with the sagger material. In addition, the reaction between the sagger body and the battery material to be roasted is only a reduction in the degree of reaction. In essence, it is impossible to cut off its reaction with the positive electrode active material, and it is impossible to achieve continuous mass production of the positive electrode material.
发明内容Contents of the invention
本发明的目的是为了解决现有上述问题，提供了一种锂电池正极材料的加工方法及生产线，该生产线环境友好、简易高效，采用该生产线进行锂电池正极材料的生产，可实现锂电池正极材料连续化的大批量生产，具有很大的产业化前景。The object of the present invention is to solve the existing above-mentioned problems and provide a processing method and production line for lithium battery cathode materials. The production line is environmentally friendly, simple and efficient, and the production line for lithium battery cathode materials can realize the The continuous mass production of materials has great industrialization prospects.
为了解决上述技术问题，本发明采用的一种技术方案是，所述锂电池正极材料的加工方法，包括以下步骤：In order to solve the above technical problems, a technical solution adopted in the present invention is that the processing method of the positive electrode material of the lithium battery comprises the following steps:
(1)正极材料粉料混合均匀后，由向下方倾斜的传送带定向输送到成型***；(1) After the positive electrode material powder is mixed evenly, it is directional transported to the molding system by the conveyor belt inclined downward;
(2)将正极材料粉料在成型***中进行高速造粒或造块，形成球形化正极材料或块状正极材料；(2) Perform high-speed granulation or agglomeration of the positive electrode material powder in the molding system to form spherical positive electrode materials or massive positive electrode materials;
(3)将球形化正极材料或块状正极材料经由向下方倾斜的传送带定向输送 到焙烧***进行焙烧并冷却；(3) The spheroidized positive electrode material or block positive electrode material is directional transported to the roasting system via a downwardly inclined conveyor belt for roasting and cooling;
(4)继续将焙烧冷却后的球形正极材料由传送带输送至破碎机，粉碎后直接进入收料车进行收集。(4) Continue to transport the calcined and cooled spherical cathode material to the crusher by the conveyor belt, and directly enter the receiving car for collection after crushing.
进一步地，所述球形正极材料的平均直径为5～20cm，孔隙率≤5％，球形度≥0.85。Further, the spherical positive electrode material has an average diameter of 5-20 cm, a porosity ≤ 5%, and a sphericity ≥ 0.85.
进一步地，所述块状正极材料的长、宽、高尺寸范围为5～20cm，孔隙率≤3.5％。Further, the length, width and height of the bulk positive electrode material range from 5 to 20 cm, and the porosity is ≤3.5%.
本发明还提供一种用于加工锂电池正极材料的生产线，包括依次设置的混料机、成型***、焙烧***、破碎机和收料机，所述混料机的出料口与造粒***之间、所述造粒***与焙烧***的进料口之间、所述焙烧***的出料口与破碎机的进料口之间分别通过传送带相连接，破碎机的出料口设置收料车。The present invention also provides a production line for processing positive electrode materials of lithium batteries, including a mixing machine, a molding system, a roasting system, a crusher and a receiving machine arranged in sequence, the discharge port of the mixing machine and the granulation system between the granulation system and the feed port of the roasting system, and between the discharge port of the roasting system and the feed port of the crusher are respectively connected by conveyor belts, and the discharge port of the crusher is set to collect materials car.
进一步的，所述混料机的出料口与造粒***之间的传送带向成型***一侧倾斜，所述造粒***与焙烧***的进料口之间的传送带向焙烧***一侧倾斜，所述焙烧***的出料口与破碎机的进料口之间的传送带向破碎机一侧倾斜。Further, the conveyor belt between the discharge port of the mixer and the granulation system is inclined to the molding system side, and the conveyor belt between the granulation system and the feed inlet of the roasting system is inclined to the roasting system side, The conveyor belt between the discharge port of the roasting system and the feed port of the crusher is inclined to the side of the crusher.
进一步的，所述成型***为滚压成球或机压成球的造粒机、或者为机压成块的螺旋压机。Further, the molding system is a granulator that rolls into balls or machine-presses into balls, or a screw press that machine-presses into blocks.
进一步的，所述焙烧***为回转窑、竖窑、摇摆窑、隧道窑或梭式窑中的一种。Further, the roasting system is one of a rotary kiln, a shaft kiln, a swing kiln, a tunnel kiln or a shuttle kiln.
进一步的，在所述焙烧***的出料口配置有风冷装置。Further, an air cooling device is arranged at the discharge port of the roasting system.
进一步的，所述混料机、成型***、焙烧***和破碎机均配有除尘***。Further, the mixer, molding system, roasting system and crusher are all equipped with a dust removal system.
进一步的，所述破碎机采用鄂式破碎机。Further, the crusher adopts a jaw crusher.
本发明具有以下优点：The present invention has the following advantages:
(1)本发明将锂电池正极材料经成型***制球或制块后进入焙烧***内进行焙烧，与传统匣钵焙烧粉体的方式不同，其焙烧窑炉的内衬材料与锂电池正极材料球团的接触面积达到最小化，接触时间也相对较短，能最大化避免焙烧过程中内衬材料与正极材料之间的物理/化学反应，从而提升锂电池正极材料焙烧后的合格率；(1) In the present invention, the positive electrode material of the lithium battery is made into balls or blocks by the molding system and then entered into the roasting system for roasting, which is different from the way of roasting powder in the traditional sagger. The contact area of the cluster is minimized, and the contact time is relatively short, which can maximize the avoidance of physical/chemical reactions between the lining material and the positive electrode material during the firing process, thereby improving the pass rate of the lithium battery positive electrode material after firing;
(2)本发明无需搭配匣钵的装卸，能最大化提高焙烧效率，提升生产速度，实现锂电池正极材料连续化的大批量生产，提升燃料的加热效率，缓解能源行业的原料供应压力；(2) The present invention does not require loading and unloading of matching saggers, can maximize roasting efficiency, increase production speed, realize continuous mass production of lithium battery positive electrode materials, improve fuel heating efficiency, and relieve raw material supply pressure in the energy industry;
(3)本发明无需使用匣钵盛装，避免在焙烧过程中二氧化碳副产物在电池原料旁的富集，对烧制产品污染较低且产能较大，并能够满足其频繁使用的要求，可替代传统辊道窑与匣钵的搭配，市场前景可观；(3) The present invention does not need to use a sagger for storage, avoids the enrichment of carbon dioxide by-products next to the battery raw materials during the roasting process, has low pollution to the fired product and has a large production capacity, and can meet the requirements of its frequent use. It can replace The combination of traditional roller kiln and sagger has a promising market prospect;
(4)本发明具有环境友好和简易高效的特点；所装备的锂电池正极材料生产线可解决现存的技术问题，实现锂电池正极材料连续化的大批量生产，具有很大的产业化前景。(4) The present invention has the characteristics of environmental friendliness, simplicity and high efficiency; the equipped lithium battery positive electrode material production line can solve existing technical problems, realize continuous mass production of lithium battery positive electrode materials, and has great industrialization prospects.
附图说明Description of drawings
图1是本发明中实施例2-5的生产线结构示意图。Fig. 1 is the schematic diagram of the production line structure of embodiment 2-5 in the present invention.
图2是本发明中实施例6的生产线结构示意图。Fig. 2 is a schematic diagram of the production line structure of Embodiment 6 of the present invention.
具体实施方式Detailed ways
为了使本发明的上述目的、特征和优点能够更加明显易懂，下面结合具体附图对本发明的具体实施方式作进一步的说明。In order to make the above objects, features and advantages of the present invention more comprehensible, the specific implementation manners of the present invention will be further described below in conjunction with specific drawings.
在下面的描述中阐述了很多具体细节以便于充分理解本发明，但是本发明还可以采用其他不同于在此描述的其它方式来实施例，本领域技术人员可以在不违背本发明内涵的情况下做类似推广，因此本发明不受下面公开的具体实施例的限制。In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways that are different from those described here, and those skilled in the art can do so without departing from the connotation of the present invention. By analogy, the present invention is not limited by the specific examples disclosed below.
实施例1：Example 1:
本发明所述锂电池正极材料的生产线，包括依次设置的混料机1、成型***3、焙烧***4、破碎机5和收料机6，所述混料机1的出料口与造粒***3之间、所述造粒***3与焙烧***4的进料口之间、所述焙烧***4的出料口与破碎机5的进料口之间分别通过传送带2相连接，破碎机5的出料口设置收料车6。为便于输送，所述混料机1的出料口与造粒***3之间的传送带向成型***3一侧倾斜，所述造粒***3与焙烧***4的进料口之间的传送带2向焙烧***一侧倾斜，所述焙烧***4的出料口与破碎机5的进料口之间的传送带2向破碎机5一侧倾斜。The production line of lithium battery positive electrode material of the present invention comprises the mixing machine 1, forming system 3, roasting system 4, crusher 5 and receiving machine 6 that are arranged in sequence, the discharge port of described mixing machine 1 and granulation Between the systems 3, between the granulation system 3 and the feed port of the roasting system 4, between the discharge port of the roasting system 4 and the feed port of the crusher 5 are respectively connected by a conveyor belt 2, and the crusher The discharge port of 5 is provided with receiving car 6. For the convenience of transportation, the conveyor belt between the discharge port of the mixer 1 and the granulation system 3 is inclined to the molding system 3 side, and the conveyor belt 2 between the granulation system 3 and the feed port of the roasting system 4 It is inclined to the side of the roasting system, and the conveyor belt 2 between the discharge port of the roasting system 4 and the feed port of the crusher 5 is inclined to the side of the crusher 5 .
所述成型***3为滚压成球或机压成球的造粒机、或者为机压成块的螺旋压机。The molding system 3 is a granulator that rolls into balls or machine-presses into balls, or a screw press that machine-presses into blocks.
所述焙烧***4为回转窑、竖窑、摇摆窑、隧道窑或梭式窑中的一种，且在焙烧***4的出料口配置有风冷装置。The roasting system 4 is one of a rotary kiln, a shaft kiln, a swing kiln, a tunnel kiln or a shuttle kiln, and an air cooling device is arranged at the outlet of the roasting system 4 .
所述混料机1、成型***3、焙烧***4和破碎机5均配有除尘***。The mixer 1, molding system 3, roasting system 4 and crusher 5 are all equipped with a dust removal system.
所述破碎机5采用鄂式破碎机。The crusher 5 is a jaw crusher.
实施例2：Example 2:
本发明所述锂电池正极材料的加工方法，包括以下步骤：The processing method of lithium battery cathode material of the present invention comprises the following steps:
(1)混料机1内的正极材料粉料经均匀混合后，由向下方倾斜的传送带2定向输送到成型***3的入料口；(1) After the positive electrode material powder in the mixer 1 is evenly mixed, it is directional transported to the feed port of the molding system 3 by the conveyor belt 2 inclined downward;
(2)该正极材料粉料在成型***3中进行高速离心造粒，形成具备高致密度及高球形度的球形化正极材料；所述球形正极材料的平均直径为5cm，孔隙率为3％，球形度为0.88；(2) The positive electrode material powder is subjected to high-speed centrifugal granulation in the molding system 3 to form a spherical positive electrode material with high density and high sphericity; the average diameter of the spherical positive electrode material is 5 cm, and the porosity is 3%. , the sphericity is 0.88;
(3)将步骤(2)得到的球形化正极材料经由向下方倾斜的传送带定向输送到焙烧***4的入料口，焙烧***4可以采用回转窑；球形正极材料在焙烧***4中进行焙烧并冷却；所述焙烧温度为550℃，时间为12h，冷却速度为10℃/min，冷却至常温；(3) The spheroidized positive electrode material obtained in step (2) is directional transported to the feed port of the roasting system 4 via a downwardly inclined conveyor belt, and the roasting system 4 can use a rotary kiln; the spherical positive electrode material is roasted in the roasting system 4 and Cooling; the calcination temperature is 550°C, the time is 12h, the cooling rate is 10°C/min, and cooled to normal temperature;
(4)继续将焙烧冷却后的球形正极材料由传送带输送至颚式破碎机的入料口进行粉碎，粉碎至直径＜0.045mm，粉碎后的正极材料直接进入收料车6进行收集；(4) Continue to transport the calcined and cooled spherical positive electrode material to the feed port of the jaw crusher for crushing by the conveyor belt until the diameter is less than 0.045mm, and the crushed positive electrode material directly enters the receiving car 6 for collection;
(5)经上述混合、造粒、焙烧及粉碎工艺，高效快速得到大批量、连续化产出的高性能锂电池正极材料。(5) Through the above-mentioned mixing, granulating, roasting and pulverizing processes, high-performance lithium battery positive electrode materials produced in large quantities and continuously can be obtained efficiently and quickly.
实施例3：Example 3:
本发明所述锂电池正极材料的加工方法，包括以下步骤：The processing method of lithium battery cathode material of the present invention comprises the following steps:
(1)混料机1内的正极材料粉料经均匀混合后，由向下方倾斜的传送带2定向输送到成型***3的入料口；(1) After the positive electrode material powder in the mixer 1 is evenly mixed, it is directional transported to the feed port of the molding system 3 by the conveyor belt 2 inclined downward;
(2)该正极材料粉料在成型***3中进行高速离心造粒，形成具备高致密度及高球形度的球形化正极材料；所述球形正极材料的平均直径为20cm，孔隙率为5％，球形度为0.85；(2) The positive electrode material powder is subjected to high-speed centrifugal granulation in the molding system 3 to form a spherical positive electrode material with high density and high sphericity; the average diameter of the spherical positive electrode material is 20 cm, and the porosity is 5%. , the sphericity is 0.85;
(3)将步骤(2)得到的球形化正极材料经由向下方倾斜的传送带定向输送到焙烧***4的入料口，焙烧***4可以采用回转窑；球形正极材料在焙烧***4中进行焙烧并冷却；所述焙烧温度为700℃，时间为12h，冷却速度为10℃/min，冷却至常温；(3) The spheroidized positive electrode material obtained in step (2) is directional transported to the feed port of the roasting system 4 via a downwardly inclined conveyor belt, and the roasting system 4 can use a rotary kiln; the spherical positive electrode material is roasted in the roasting system 4 and Cooling; the calcination temperature is 700°C, the time is 12h, the cooling rate is 10°C/min, and cooled to normal temperature;
(4)继续将焙烧冷却后的球形正极材料由传送带输送至颚式破碎机的入料口进行粉碎，粉碎至直径＜0.045mm，粉碎后的正极材料直接进入收料车6进行收集；(4) Continue to transport the calcined and cooled spherical positive electrode material to the feed port of the jaw crusher for crushing by the conveyor belt until the diameter is less than 0.045mm, and the crushed positive electrode material directly enters the receiving car 6 for collection;
(5)经上述混合、造粒、焙烧及粉碎工艺，高效快速得到大批量、连续化产出的高性能锂电池正极材料。(5) Through the above-mentioned mixing, granulating, roasting and pulverizing processes, high-performance lithium battery positive electrode materials produced in large quantities and continuously can be obtained efficiently and quickly.
实施例4：Example 4:
本发明所述锂电池正极材料的加工方法，包括以下步骤：The processing method of lithium battery cathode material of the present invention comprises the following steps:
(1)混料机1内的正极材料粉料经均匀混合后，由向下方倾斜的传送带2定向输送到成型***3的入料口；(1) After the positive electrode material powder in the mixer 1 is evenly mixed, it is directional transported to the feed port of the molding system 3 by the conveyor belt 2 inclined downward;
(2)该正极材料粉料在成型***3中进行高速离心造粒，形成具备高致密度及高球形度的球形化正极材料；所述球形正极材料的平均直径为15cm，孔隙率为4.5％，球形度为0.95；(2) The positive electrode material powder is subjected to high-speed centrifugal granulation in the molding system 3 to form a spherical positive electrode material with high density and high sphericity; the average diameter of the spherical positive electrode material is 15 cm, and the porosity is 4.5%. , the sphericity is 0.95;
(3)将步骤(2)得到的球形化正极材料经由向下方倾斜的传送带定向输送到焙烧***4的入料口，焙烧***4可以采用回转窑；球形正极材料在焙烧***4中进行焙烧并冷却；所述焙烧温度为750℃，时间为3h，冷却速度为10℃/min，冷却至常温；(3) The spheroidized positive electrode material obtained in step (2) is directional transported to the feed port of the roasting system 4 via a downwardly inclined conveyor belt, and the roasting system 4 can use a rotary kiln; the spherical positive electrode material is roasted in the roasting system 4 and Cooling; the calcination temperature is 750°C, the time is 3h, the cooling rate is 10°C/min, and cooled to normal temperature;
(4)继续将焙烧冷却后的球形正极材料由传送带输送至颚式破碎机的入料口进行粉碎，粉碎至直径＜0.045mm，粉碎后的正极材料直接进入收料车6进行收集；(4) Continue to transport the calcined and cooled spherical positive electrode material to the feed port of the jaw crusher for crushing by the conveyor belt until the diameter is less than 0.045mm, and the crushed positive electrode material directly enters the receiving car 6 for collection;
(5)经上述混合、造粒、焙烧及粉碎工艺，高效快速得到大批量、连续化产出的高性能锂电池正极材料。(5) Through the above-mentioned mixing, granulating, roasting and pulverizing processes, high-performance lithium battery positive electrode materials produced in large quantities and continuously can be obtained efficiently and quickly.
实施例5：Example 5:
本发明所述锂电池正极材料的加工方法，包括以下步骤：The processing method of lithium battery cathode material of the present invention comprises the following steps:
(1)混料机1内的正极材料粉料经均匀混合后，由向下方倾斜的传送带2定向输送到成型***3的入料口；(1) After the positive electrode material powder in the mixer 1 is evenly mixed, it is directional transported to the feed port of the molding system 3 by the conveyor belt 2 inclined downward;
(2)该正极材料粉料在成型***3中进行高速离心造粒，形成具备高致密度及高球形度的球形化正极材料；所述球形正极材料的平均直径为15cm，孔隙率为5％，球形度为0.86；(2) The positive electrode material powder is subjected to high-speed centrifugal granulation in the molding system 3 to form a spherical positive electrode material with high density and high sphericity; the average diameter of the spherical positive electrode material is 15 cm, and the porosity is 5%. , the sphericity is 0.86;
(3)将步骤(2)得到的球形化正极材料经由向下方倾斜的传送带定向输 送到焙烧***4的入料口，焙烧***4可以采用回转窑；球形正极材料在焙烧***4中进行焙烧并冷却；所述焙烧温度为720℃，时间为8h，冷却速度为10℃/min，冷却至常温；(3) The spheroidized positive electrode material obtained in step (2) is directional transported to the feed port of the roasting system 4 via a downwardly inclined conveyor belt, and the roasting system 4 can use a rotary kiln; the spherical positive electrode material is roasted in the roasting system 4 and Cooling; the calcination temperature is 720°C, the time is 8h, the cooling rate is 10°C/min, and cooled to normal temperature;
(4)继续将焙烧冷却后的球形正极材料由传送带输送至颚式破碎机的入料口进行粉碎，粉碎至直径＜0.045mm，粉碎后的正极材料直接进入收料车6进行收集；(4) Continue to transport the calcined and cooled spherical positive electrode material to the feed port of the jaw crusher for crushing by the conveyor belt until the diameter is less than 0.045mm, and the crushed positive electrode material directly enters the receiving car 6 for collection;
(5)经上述混合、造粒、焙烧及粉碎工艺，高效快速得到大批量、连续化产出的高性能锂电池正极材料。(5) Through the above-mentioned mixing, granulating, roasting and pulverizing processes, high-performance lithium battery positive electrode materials produced in large quantities and continuously can be obtained efficiently and quickly.
实施例6：Embodiment 6:
本发明所述锂电池正极材料的加工方法，包括以下步骤：The processing method of lithium battery cathode material of the present invention comprises the following steps:
(1)混料机1内的正极材料粉料经均匀混合后，由向下方倾斜的传送带2定向输送到成型***3的入料口；(1) After the positive electrode material powder in the mixer 1 is evenly mixed, it is directional transported to the feed port of the molding system 3 by the conveyor belt 2 inclined downward;
(2)该正极材料粉料在成型***3(采用螺旋压机)中进行板压成块，形成具备高致密度及高球形度的块状正极材料，板压条件采用双面加压或等静压成型，所述块状正极材料的长、宽、高尺寸范围为5～20cm，孔隙率≤3.5％；(2) The positive electrode material powder is pressed into blocks in the molding system 3 (using a screw press) to form a block-shaped positive electrode material with high density and high sphericity. The plate pressing condition adopts double-sided pressing or Static pressure forming, the length, width and height of the block positive electrode material range from 5 to 20 cm, and the porosity is ≤3.5%;
(3)将步骤(2)得到的球形化正极材料经由向下方倾斜的传送带定向输送到焙烧***4的入料口，焙烧***4可以采用回转窑；球形正极材料在焙烧***4中进行焙烧并冷却；所述焙烧温度为600℃，时间为6h，冷却速率10℃/min；温度700～750℃，时间1.5～2.5h，冷却速率5℃/min；(3) The spheroidized positive electrode material obtained in step (2) is directional transported to the feed port of the roasting system 4 via a downwardly inclined conveyor belt, and the roasting system 4 can use a rotary kiln; the spherical positive electrode material is roasted in the roasting system 4 and Cooling; the calcination temperature is 600°C, the time is 6h, and the cooling rate is 10°C/min; the temperature is 700-750°C, the time is 1.5-2.5h, and the cooling rate is 5°C/min;
(4)继续将焙烧冷却后的球形正极材料由传送带输送至颚式破碎机的入料口进行粉碎，粉碎后直径＜0.045m，粉碎后的正极材料直接进入收料车6进行收集；(4) Continue to transport the calcined and cooled spherical positive electrode material to the feed port of the jaw crusher for crushing by the conveyor belt. After crushing, the diameter is less than 0.045m, and the crushed positive electrode material directly enters the receiving car 6 for collection;
(5)经上述混合、造粒、焙烧及粉碎工艺，高效快速得到大批量、连续化产出的高性能锂电池正极材料。(5) Through the above-mentioned mixing, granulating, roasting and pulverizing processes, high-performance lithium battery positive electrode materials produced in large quantities and continuously can be obtained efficiently and quickly.

Claims (10)

  1. 一种锂电池正极材料的加工方法，其特征在于，包括以下步骤：A processing method for a lithium battery cathode material, characterized in that it comprises the following steps:
    (1)正极材料粉料混合均匀后，由向下方倾斜的传送带定向输送到成型***；(1) After the positive electrode material powder is mixed evenly, it is directional transported to the molding system by the conveyor belt inclined downward;
    (2)将正极材料粉料在成型***中进行高速造粒或造块，形成球形化正极材料或块状正极材料；(2) Perform high-speed granulation or agglomeration of the positive electrode material powder in the molding system to form spherical positive electrode materials or massive positive electrode materials;
    (3)将球形化正极材料或块状正极材料经由向下方倾斜的传送带定向输送到焙烧***进行焙烧并冷却；(3) The spheroidized positive electrode material or bulk positive electrode material is directional transported to the roasting system via a downwardly inclined conveyor belt for roasting and cooling;
    (4)继续将焙烧冷却后的球形正极材料由传送带输送至破碎机，粉碎后直接进入收料车进行收集。(4) Continue to transport the calcined and cooled spherical cathode material to the crusher by the conveyor belt, and directly enter the receiving car for collection after crushing.
  2. 如权利要求1所述的锂电池正极材料的加工方法，其特征是：所述球形正极材料的平均直径为5～20cm，孔隙率≤5％，球形度≥0.85。The method for processing the anode material of a lithium battery according to claim 1, characterized in that: the average diameter of the spherical anode material is 5-20 cm, the porosity is ≤5%, and the sphericity is ≥0.85.
  3. 如权利要求1所述的锂电池正极材料的加工方法，其特征是：所述块状正极材料的长、宽、高尺寸范围为5～20cm，孔隙率≤3.5％。The method for processing the cathode material of a lithium battery according to claim 1, characterized in that: the length, width and height of the bulk cathode material range from 5 to 20 cm, and the porosity is ≤3.5%.
  4. 一种用于加工锂电池正极材料的生产线，其特征是：包括依次设置的混料机(1)、成型***(3)、焙烧***(4)、破碎机(5)和收料机(6)，所述混料机(1)的出料口与造粒***(3)之间、所述造粒***(3)与焙烧***(4)的进料口之间、所述焙烧***(4)的出料口与破碎机(5)的进料口之间分别通过传送带(2)相连接，破碎机(5)的出料口设置收料车(6)。A production line for processing anode materials for lithium batteries, characterized in that it includes a material mixer (1), a molding system (3), a roasting system (4), a crusher (5) and a material receiving machine (6) arranged in sequence ), between the discharge port of the mixer (1) and the granulation system (3), between the feed inlet of the granulation system (3) and the roasting system (4), the roasting system ( 4) and the feed port of the crusher (5) are respectively connected by conveyor belts (2), and the discharge port of the crusher (5) is provided with a receiving vehicle (6).
  5. 如权利要求4所述的用于加工锂电池正极材料的生产线，其特征是：所述混料机(1)的出料口与造粒***(3)之间的传送带向成型***(3)一侧倾斜，所述造粒***(3)与焙烧***(4)的进料口之间的传送带(2)向焙烧***一侧倾斜，所述焙烧***(4)的出料口与破碎机(5)的进料口之间的传送带(2)向破碎机(5)一侧倾斜。The production line for processing lithium battery cathode materials according to claim 4, characterized in that: the conveyor belt between the discharge port of the mixer (1) and the granulation system (3) is directed to the molding system (3) One side is inclined, the conveyor belt (2) between the granulation system (3) and the feed port of the roasting system (4) is inclined to the roasting system side, the discharge port of the roasting system (4) is connected to the crusher The conveyor belt (2) between the feeding ports of (5) is inclined towards the side of the crusher (5).
  6. 如权利要求4所述的用于加工锂电池正极材料的生产线，其特征是：所述成型***(3)为滚压成球或机压成球的造粒机、或者为机压成块的螺旋压机。The production line for processing lithium battery cathode materials according to claim 4, characterized in that: the molding system (3) is a granulator that is rolled into balls or machine-pressed into balls, or machine-pressed into blocks Screw press.
  7. 如权利要求4所述的用于加工锂电池正极材料的生产线，其特征是：所述焙烧***(4)为回转窑、竖窑、摇摆窑、隧道窑或梭式窑中的一种。The production line for processing anode materials for lithium batteries according to claim 4, characterized in that: the roasting system (4) is one of a rotary kiln, a shaft kiln, a swing kiln, a tunnel kiln or a shuttle kiln.
  8. 如权利要求4所述的用于加工锂电池正极材料的生产线，其特征是：在所述焙烧***(4)的出料口配置有风冷装置。The production line for processing cathode materials of lithium batteries according to claim 4, characterized in that: an air cooling device is arranged at the discharge port of the roasting system (4).
  9. 如权利要求4所述的用于加工锂电池正极材料的生产线，其特征是：所述混料机(1)、成型***(3)、焙烧***(4)和破碎机(5)均配有除尘***。The production line for processing lithium battery cathode materials according to claim 4, characterized in that: the mixer (1), molding system (3), roasting system (4) and crusher (5) are equipped with Dust removal system.
  10. 如权利要求4所述的用于加工锂电池正极材料的生产线，其特征是：所述破碎机(5)采用鄂式破碎机。The production line for processing lithium battery cathode materials according to claim 4, characterized in that: the crusher (5) is a jaw crusher.
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