Kaolin is an important process material and is widely used in ceramics, rubber, papermaking, coatings, plastics and other fields.
The process flow of kaolin processing plants includes washing and impurity removal, stirring and slurrying, washing treatment, concentration and filtration, etc., aiming to fully extract kaolin.
The process flow of kaolin process will be introduced below.
Washing and impurity removal of kaolin
Some kaolin ore has sticky lumps and needs to be dispersed through the washing process. The equipment suitable for this process is the scrubber trommel, which can wash and screen out large-sized waste rocks at the same time.
Kaolin stirring and slurrying
Kaolin particles are fine and powdery, and they are fully dissolved in the ore slurry through stirring and slurrying. This step often uses attrition scrubber to prepare slurry.
Kaolin washing treatment
The slurry is processed by washing equipment to remove waste rocks and separate kaolin attached to sand and gravel. Commonly used washing equipment includes spiral washing machine and wheel sand washer. The overflow slurry after washing is further classified by the hydrocyclone to obtain higher quality kaolin slurry.
Kaolin Concentration and Filtration
The kaolin slurry after multiple washings is concentrated by cone thickener and then pressed into filter cake by plate and frame filter press.
The nature of the raw ore and the purpose of the final product determine the process flow of kaolin. Sometimes, special processing steps such as magnetic separation are required to ensure the quality of the final product.
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