Lithium iron phosphate continuous preparation device and preparation method
A lithium iron phosphate and preparation device technology, which is applied in the direction of mixing methods, chemical instruments and methods, mixers with rotating stirring devices, etc., can solve the influence of differences in reaction conditions of lithium iron phosphate, inconsistent performance of lithium iron phosphate products, difficult Large-scale production and other issues, to achieve the effect of easy and precise adjustment, high consistency and stable system
Active Publication Date: 2017-01-18
江苏合志新能源材料技术有限公司 +1
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Problems solved by technology
However, these two synthesis methods require the raw materials to be placed in a sealed autoclave and heated under pressure. The output of each synthesis is limited by the volume of the autoclave, which is difficult to apply to industrial large-scale production.
Moreover, lithium iron phosphate synthesized in batches is easily affected by differences in reaction conditions, and the performance of lithium iron phosphate products produced in different batches is inconsistent
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[0012] The continuous preparation device for lithium iron phosphate provided by the present invention will be further described in detail with reference to the accompanying drawings and specific examples.
[0013] see figure 1 , the present invention provides a continuous preparation device 1 for lithium iron phosphate, which is used for continuously preparing lithium iron phosphate by hydrothermal synthesis or solvothermal synthesis. The continuous preparation device 1 for lithium iron phosphate includes a raw material system, a material delivery system, a tubular Reaction device, tank reaction device, reaction system pressure regulating system and discharge system.
[0014] The raw material system is used to prepare a mixed raw material solution for hydrothermal or solvothermal synthesis of lithium iron phosphate, for example, dissolving and mixing phosphorus source, lithium source and ferrous source in a solvent. The material conveying system continuously inputs the mixed ...
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The invention relates to a continuous preparation device for lithium iron phosphate, comprising a raw material system, a material conveying system, a tubular reaction device, a kettle reaction device, a reaction system pressure regulating system and a discharge system, the raw material system is used for mixing raw material solutions, the The material conveying system continuously inputs the mixed raw material solution into the tubular reaction device. The tubular reaction device keeps the material in a push-flow conveying reaction state at the specified time, temperature and pressure. The tank reaction device is set in the tubular reaction After the device, the material is in a fully mixed flow reaction state at the specified time, temperature and pressure, and the reacted product is continuously output to the discharge system, and the reaction system pressure regulating system adds volatile solvent components to the reaction system Adjust the system pressure to maintain the tubular reactor and tank reactor under the specified pressure conditions. The invention also relates to a continuous preparation method for lithium iron phosphate.
Description
technical field [0001] The invention relates to a continuous preparation device for lithium iron phosphate and a continuous preparation method for lithium iron phosphate. Background technique [0002] Energy issues have always been a major issue in the development of human society and science and technology. As a green secondary battery with high energy density, lithium-ion batteries have been widely used in consumer electronics products such as notebook computers, mobile phones, and cameras. [0003] Lithium iron phosphate, as a kind of positive electrode active material with good safety, low price and environmental friendliness, has been paid great attention to by people. At present, the synthesis methods of lithium iron phosphate in the laboratory mainly include high-temperature solid-phase method, spray method, hydrothermal or solvothermal synthesis method, co-precipitation method, emulsion drying method and microwave synthesis method. In industry, lithium iron phospha...
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IPC IPC(8): C01B25/45B01F23/00
CPCC01B25/45H01M4/5825Y02E60/10B01F27/111B01F35/2213B01F23/02H01M4/0438H01M4/0471H01M4/382H01M4/765
Inventor 王莉何向明罗晶徐程浩李建军吕丹尚玉明张宏生
Owner 江苏合志新能源材料技术有限公司