• 21 Oct, 2022
• By EPIC Powder
• 2 Comments

Which model of air flow mill is suitable for lithium cobalate raw materials? Umico Powder Machinery

Lithium cobalate, chemical formula LiCoO ∈, is an inorganic compound, which is mainly used to manufacture lithium ion batteries for mobile phones, laptops and other portable electronic devices as cathode materials. At present, it is a common method to prepare lithium cobalate superfine powder by air jet mill. Air jet mill is widely used because of its large production capacity, high degree of automation, fine product particle size, narrow particle size distribution, high purity, high activity, good dispersion and other characteristics. Among many air flow pulverizers in China, MQW air flow pulverizer has shown its advantages in battery materials after years of practical application

MQW jet mill adopts a built-in grading system, which is mainly a combined model integrating crushing and grading. Qualified fine powder can be graded in the machine, and then discharged out of the machine, avoiding the phenomenon of over crushing. The coarse powder is repeatedly crushed in the machine with automatic circulation and return, improving the crushing efficiency. In the process of superfine grinding, the particle size of the material decreases gradually with the extension of grinding time; At the same time, the specific surface area and surface energy of the material increase gradually; As a result, the tendency of fine particles to agglomerate with each other is also gradually enhanced. After a certain period of time, the dynamic balance between ultrafine crushing and powder agglomeration is reached. In this state, even if the crushing time is extended, it is difficult to make the product crush finer, and some even make the apparent particle size of the product coarser. To solve this problem, the effective measure is to timely separate qualified fine powders. Therefore, jet mill should be equipped with corresponding efficient fine classification equipment, otherwise it is difficult to achieve the purpose of efficient ultra-fine grinding. According to the different combination modes of the classifier and the crusher, it can be divided into built-in and external classification systems. The external grading system covers a large area, and materials can only enter the grader through the pipe between the crusher and the grader. Therefore, it is not easy to separate the fine powder in time (before entering the grader), and it is disadvantageous for the grading to reunite again< Br/>MQW jet mill is used in chemical, mineral, building materials, electronics, pharmaceuticals, coatings, dyes, light industry, food, metallurgy, feed and other industries. Capable of dry crushing and grading various organic and inorganic substances< Br/>Equipment performance characteristics:
1) MQW air jet mill is a combined equipment integrating crushing and grading, with compact structure and convenient installation (without foundation)< Br/>2). The grain size of the raw materials used in this machine can reach about 3mm, and the product grain size d97 is generally 3~100 mu; It can be adjusted freely within the range of m< Br/>3) The impact hammer and toothed lining plate of the crushing chamber are made of special wear-resistant materials, which improves the service life. The impact hammer and lining plate are easy to replace< Br/>4). The classification room is a horizontal turbine classifier with variable frequency speed regulation, low abrasion, high classification accuracy and easy particle size adjustment< Br/>5< Br/>6) This machine is a fluidized bed jet mill with large crushing capacity per unit power, so the equipment operation cost is low, the overall system configuration is reasonable, and the one-time investment cost is low< Br/>7). A guide air screen is set in the middle of the machine. After the air separation, the materials are sent to the top grading wheel for re grading, which improves the grading effect, accuracy and output< Br/>MQW air flow mill is one of the main equipment of Qingdao Youmingke. As the source manufacturer of air flow mills in China, Qingdao Youmingke has been engaged in the research, development, production and sales of ultra-fine grinding and grading equipment for more than 20 years, accumulating tens of thousands of successful cases. It can also provide free experiments and testing to provide safety guarantee for users to purchase the machine