Preparation device of lithium manganate battery material

Abstract

The invention relates to preparation equipment of lithium manganate, and in particular to a preparation device of a lithium manganate battery material. The preparation device is characterized in thatthe upper side of a roasting chamber is connected with a container for containing a solution, and the lower side of the roasting chamber is connected with an airflow grinding machine; powder roasted by the roasting chamber can be conveyed to the airflow grinding machine to be ground, and then the ground powder can be conveyed to the roasting chamber to be roasted again under the action of airflowof the airflow grinding machine; waste heat of the roasting chamber is used for heating the container. According to the preparation device disclosed by the invention, through direct connection betweenthe roasting chamber and the airflow grinding machine, a technology of roasting, grinding and re-roasting is automatically realized, manpower is saved, and the production efficiency is increased; meanwhile, by adopting one roasting chamber, containing, drying and roasting of gel are realized, the design is ingenious, the structure is simple, and the cost can be saved; meanwhile, by utilizing a bent heat conduction plate, the side surface and the bottom surface of the gel can be simultaneously heated, not only is heating relatively uniform, but also a heating effect is better, and energy is saved.

Description

technical field [0001] The invention relates to preparation equipment of lithium manganate, in particular to a preparation device of lithium manganate battery material. Background technique [0002] Lithium manganese oxide has become the first choice for power lithium-ion battery cathode materials due to its advantages of rich manganese resources, low cost, good safety, no environmental pollution, and easy preparation. However, the main reason hindering the formation of power battery-type lithium manganate industrialization capacity is Its performance is not stable enough, that is, its capacity decays quickly during the charge-discharge cycle, especially at high temperatures. At present, the main methods of lithium manganate can be divided into solid-phase method and liquid-phase method. Liquid-phase methods such as sol-gel methods are widely used in the preparation of nano-ceramic powders, films and fiber coatings. Because this method can realize uniform mixing of reactan...

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Problems solved by technology

The principle of the existing sol-gel method is that a variety of metal cations can form chelates with organic acids, and the chelates can be polymerized with polyhydroxy acids to form a solid polymer precursor with uniform distribution of cations. The final product can be obtained by heat treatment of the precursor; however, due to the limitation of preparation equipment, roasting equipment, etc., the preparation time is long and the cost is high

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