Chemicals used inPulp and Paper Industry

Main processes of paper making

Bleaching ChemicalsChemical Pulping

Bleaching Chemicals

Sodium Chlorate: It is used for the manufacturing of chlorine dioxide for the bleaching of chemical pulp.

Hydrogen Peroxide: It is commonly used in the bleaching of chemical and mechanical pulp and recycled fiber.

Chlorine gas: It can be added to provide further bleaching of paper to increase it’s opacity.

Sodium hypochlorite: It exists as light yellow solid that is dissolved in water to form aqueous alkali solution due to presence of caustic.

Chemical Pulping

Calcium oxide

Magnesium bisulfite

Sodium Carbonate

It is also commonly known as lime and exists as white crystalline solid that is highly corrosive.

It usually exists in aqueous form that produces gaseous fumes of sulfur dioxide when in contact with oxidizing acids.

It is alternatively known as the top selling chemical, soda ash product. It serves the purpose of a makeup chemical in alkaline pulping and chemical recovery.

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