With organic solvent extraction, then the final product can be obtained through the process of filtration, decompression, and vacuum drying. According to the nature of pigment the solvent in pigment extraction is different.The commonly used are water, acid and alkali solution, organic solution, such as ethanol, acetone, alkanes, alkenes, benzene, grease and carbon dioxide etc.

Solvent Extraction Process Flow Chart:

Main Equipment:

Extractor, DTDC、Condenser

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