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Iron Oxide Pigments

J.K Chemical Company | Updated: Jul 12, 2017

  Iron oxide pigments

  There are bright colors and unique colors

  Iron oxide pigments have a high color strength, fine and uniform particle size, to ensure that his use value, coupled with lower prices, to ensure that the user's economic results.

  Iron oxide pigment color is very clean and pure, and do not use other organic or inorganic pigments plus sets of polish. Although it is not as bright as some organic pigments or other pigments, but the color of iron oxide pigments has a unique style, its soft, quiet tone pleasing, suitable for residential, public places, indoor and outdoor coating brush. Its solemn tones, especially for luxury buildings and magnificent buildings.

  Iron oxide pigments have a high color strength, fine and uniform particle size, to ensure that his use value, coupled with lower prices, to ensure that the user's economic results.

  Production and application of iron oxide yellow

  Production of iron oxide yellow A: ferrous sulfate oxidation of sulfuric acid and iron scrap reaction to generate ferrous sulfate, adding sodium hydroxide and into the air oxidation preparation of nuclei,

  And then in the nucleus suspension with ferrous sulfate and iron filings, heated into the air oxidation, by filtration, rinsing, drying, crushing to obtain iron oxide yellow.

  Fe + H2SO4 → FeSO4 + H2 ↑ FeSO4 + 2NaOH → Fe (OH) 2 + Na2SO4 4Fe (OH) 2 + O2 → 4FeOOH + 2H2O H2SO4 + Fe + 7H2O → FeSO4 · 7H2O + H2 ↑ FeSO4 · 7H2O + O2 → 2Fe2O3 · H2O ↓ + 4H2SO4 + 2H2O

  Reaction conditions: 74g iron scrap added to 1000ml 15% sulfuric acid reaction to the iron disappeared, the formation of about 200g / L concentration of ferrous sulfate.

  To the ferrous sulfate solution prepared above, 30% of sodium hydroxide was added thereto, and 40% of the iron was continuously stirred to ferrous hydroxide [Fe (OH) 2], and the mixture was heated at 30 to 35 ° C , So that Fe is oxidized to Fe to form nuclei.

  And then 90 g / L of iron scrap was added thereto to produce 7 g / L of nuclei and 40 g / L of ferrous sulphate, and the mixture was heated to 85C and drum air was oxidized at a rate of 600 L / h for 64 h and then filtered and washed , Dried and pulverized to prepare aqueous iron oxide.

  1, iron oxide yellow pigment in all kinds of concrete prefabricated materials and building materials as a pigment or coloring agent, directly transferred to the application of cement. A variety of indoor and outdoor color concrete surface, such as walls, floors, ceilings, pillars, porches, pavement, parking, ladder,

  Various architectural ceramics and glass ceramics, such as tiles, tiles, tiles, panels, terrazzo, mosaic tiles, artificial marble and so on.

  2, iron oxide yellow pigment for a variety of paint coloring and protection of substances, including water-based interior and exterior paint, powder coatings, etc .; can also be applied to oily paint, including oxygen, alkyd, amino and other primer and finish; Can be used for toy paint, decorative paint, furniture paint, electrophoretic paint and enamel paint.

  3, iron oxide yellow pigment for coloring plastic products, such as thermosetting plastics and thermoplastics, and rubber products, such as car inner tube, aircraft inner tube, bicycle inner tube and so on.

  4, widely used in the construction industry artificial marble, terrazzo coloring. Is the watercolor, oil, paint, rubber and other pigments. Used as an intermediate for iron oxide pigments, such as iron oxide red, iron black and so on.

  In addition, iron oxide yellow pigment can also be used for all kinds of cosmetics, paper, leather coloring.

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