Preparation of LiFePO4 by spray drying

Process Brief Description

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The drying medium air is filtered by the primary and medium-efficiency air filters. After being heated by the heater, it enters the air distributor at the top of the dryer. The hot air enters the drying chamber in a spiral shape evenly.

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The liquid material is transported to the high-speed centrifugal atomizer at the top of the tower through the feed-liquid pump. Under the action of centrifugal force, it is sprayed into extremely fine mist-like droplets, which are in parallel contact with hot air and can be dried into finished products in a very short time.

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The finished product is continuously collected at the bottom of the drying tower and the cyclone separator, and the exhaust gas is exhausted by the induced draft fan after dust removal.

Equipment Technical Advantages

01

The equipment adopts high-speed centrifugal spray atomization technology to effectively improve or increase the packing density of the cathode material lithium iron phosphate, so that the monomer particles can reach 3~5um and the finished product has a moisture content of 0.5%.

02

Apply magnetic filtration technology, pure materials, and maintain the conductive properties of cathode materials

03

Waste heat gas recycling, energy saving and environmental protection

04

The equipment adopts pulse dust removal intelligent control technology to achieve cooling protection safety interlocking

Process Characteristics

Fast spray drying speed. After the material liquid is atomized, the surface area is greatly increased. During the contact with hot air, 95% to 98% of the water can be evaporated in an instant. The drying time only takes a few seconds. It is especially suitable for drying heat-sensitive materials.

The product has good uniformity, fluidity and solubility. The higher the purity of the product, the better the quality.

The production process of the spray dryer is simplified and the operation and control are convenient. Liquids with a moisture content of 40~60% (up to 90% for special materials) can be dried into powder products at one time. After drying, there is no need to crush and screen, which reduces the production process and improves product purity. Product particle size, bulk density, and moisture content can be adjusted within a certain range by changing operating conditions, making control and management very convenient.

Preparation Of LiFePO4 By Spray Drying