Our lives are becoming more and more colorful, and our material needs are becoming different. For example: the use of iron oxide pigments is very wide, in roads, playgrounds, watercolors, paints and other various industries have corresponding applications, it is an important type of iron oxide pigment series. There are many production methods such as acid method, alkali method, oxidation method, peptizing method, etc. Let us take a look together.
production method:
Method 1: Use ferrous sulfate as material, sodium hydroxide as deposition agent, add dispersant and surfactant, first pass in nitrogen for protection, and then pass in air to complete oxidation. The resulting particles have a uniform spindle-shaped iron oxide The pigment can avoid the mercerizing effect, and its main function fully meets the chemical industry standard.
Method 2: Neutralize ferrous sulfate with caustic soda (or ammonia) to form ferrous hydroxide, and oxidize ferrous hydroxide with air to make seed crystals. The seed crystals are used to oxidize ferrous sulfate with air, and gradually drop during the reaction. Ferrous sulfate and alkali (or ammonia) are added to make it reach a certain ferrous concentration and PH value, and a series of hue from light to dark iron oxide can be obtained by controlling the progress of color light. Under this condition, iron yellow seeds are obtained under acidic conditions, and iron red seeds are obtained under basic conditions.
Iron oxide yellow pigment like iron oxide yellow 311, iron oxide yellow 313, iron oxide yellow 810, iron oxide yellow 920 can be directly used in cement as a pigment or colorant for precast parts and building products in various types of concrete. As well as various indoor and outdoor colored concrete surfaces, such as walls, floors, ceilings, pillars, porches, pavements, parking lots, stairs, stations, etc .; there are also various building ceramics and glazed ceramics, such as facing bricks, floor tiles, roof tiles , Panel, terrazzo, mosaic tile, artificial marble, etc. It is also suitable for various paint coloring and protective substances, including water-based interior and exterior wall paints, powder coatings, etc .; it can also be used for oil-based paints including alkyd, amino and other primers and topcoats.
Using these products can allow us to better complete or achieve a certain effect, so that we can better and more conveniently complete our work and achieve the corresponding effect.
If you are interested us, pls feel free to contact us. our TEL is 0086-15958136613 Ms Gloria XU( 7X24hours)
