Blue pigment manufacture with grinding ball

The manufacture of blue pigments can vary depending on the specific type of pigment and the desired application. Here are some general processes for producing commonly used blue pigments: Ultramarine Blue: This pigment is made by heating kaolin, sodium carbonate, sulfur, and charcoal or other reducing agents together at high temperatures. The resulting material is then ground and washed to remove impurities, producing a deep blue pigment. Phthalocyanine Blue: This pigment is made by reacting phthalic anhydride with ammonia and a metal salt catalyst such as copper, iron, or aluminum. The resulting pigment is then purified and dried to produce a bright blue powder. Prussian Blue: This pigment is made by reacting iron salts such as ferrous sulfate with potassium cyanide or sodium cyanide. The resulting blue precipitate is then washed, dried, and ground to produce the pigment. Indigo: This pigment is derived from the leaves of the indigo plant. The leaves are fermented in a vat of wate