The Production Technology of Pigment Milori Blue

The Production Technology of Pigment Milori Blue

The Production Technology of Pigment Milori Blue

Milori blue pigment is a dark blue inorganic pigment. other name: milori blue, paris blue, Prussian Blue,chinese blue, pigment blue 27 etc. It is used for solvent based coating、offset inks, solvent inks and pesticide etc. There is no Prussian blue in pesticide, but it can be used as a warning color after dyeing for it. So there will be a special mark after pesticide spray.

                                           

Milori blue pigment manufacturing process starts first by dissolving the raw material, respectively put the ferrous sulfate and sodium or potassium ferrocyanide into solution tank, the amount of water was added to dissolve the amount of water must be precise, because the concentration of the reaction solution refer to the white precipitate slurry and the final product Milori blue particle size, particle size and Milori blue and determines the usability of Milori blue. Milori blue industrial average primary particle size varies between different species varies 0.01 ~ 0.20μm, by changes in the concentration of the reaction solution is an important measure to control product quality of Milori blue.

In the preparation of ferrous sulfate solution, which normally should be noted that contains trivalent iron. Industrial ferrous sulfate during storage, easy to weathering and oxidation, if used without treated, it is bound to have some of Prussian blue formation resulting product quality decline; additional, the results of weathering, resulting in the dosage hard to measure. Thus ferrous sulfate must use about twice the water dissolves, add some sulfuric acid and iron tablets makes trivalent iron reduction, concentration is then measured, weighed by the amount of formula solution and dilute with water to the desired concentration. The manufacture of ammonium Milori blue, dissolve the ammonium sulfate into ferrous sulfate solution.

(2)The formation of white pulp and thermal cook

Precipitation white pulp in the amount of precipitation capacity bucket for courier reaction. Bucket can be made ​​of wood, but now is more used of iron coated with acid-resistant lining. The reaction vat equipped with a stirrer, a steam inlet tube and a discharge spout. When the precipitation, the first solution of sodium or potassium ferrocyanide added to the reaction bucket, diluted with water to the desired concentration.........................read more