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Deinking agent should have wet, osmosis, swelling resin, emulsification, dispersion and other functions.
The basic composition consists of four categories:
(1) surfactant: it has the functions of osmosis, emulsifying, dispersing and washing. There is also bubbling and stability during flotation. Most of them are fatty alcohol polyoxyethylene ether and fatty acid methyl ester ethoxylate, which have excellent emulsifying cleaning and dispersing properties.
(2) bleaching agent: improve the whiteness of the paste after deinking, such as oxidizer such as hydrogen peroxide (H2O2), related hydrogen peroxide stabilizer, hydrogen peroxide cryogenic catalyst, etc.
(3) alkali: it plays the role of saponification and washing, such as sheet alkali and water glass.
(4) sodium silicate: it ACTS as a buffer, washing, dispersing and stabilizes hydrogen peroxide.
Deinking agents are divided into washing deinking agents, flotation deinking agents, washing deinking agents and flotation deinking agents according to different deinking equipment and technological requirements.