In addition to cadmium pigments (cadmium sulphide selenide/cadmium red, cadmium sulfide/cadmium yellow, etc.), the types of pigments commonly used in enamels also have a spinel type pigment, which has high chemical stability and high temperature stability. Excellent, it can be used for coloring other enamel glazes except titanium glaze. As a manufacturer of enamel pigment raw materials, today we will introduce from a professional perspective the "just-needed" cobalt blue pigment in enamel pigments.

1. The chemical composition of cobalt blue

The main composition of cobalt blue is CoO, AI2O3, or cobalt aluminate (Co AI2O4), with a relative molecular mass of 176.89. In terms of chemical formula theory, the content of AI2O3 in cobalt blue is 57.3%, the content of CoO is 42.36%, or 33.31% of Co. But the actual composition of cobalt blue AI2O3 content is 65% ~ 70%, CoO content is 30% ~ 35%, some cobalt blue pigment cobalt oxide content is lower by 10% ~ 15%, because it may also contain other used to change the cobalt A small amount of other oxides in the blue plain hue.

Second, the advantages of cobalt blue pigment

Cobalt blue is a blue color with green light. It is very beautiful and stunning. This blue looks as mysterious as the sea and has the texture of inorganic pigments. In addition, it has excellent weather resistance, alkali resistance, resistance to various solvents, and heat resistance up to 1200°C. It is an environmentally friendly non-toxic high temperature resistant inorganic pigment.

Third, the use of cobalt blue pigment

Cobalt blue is currently mainly used for coloring high-temperature coatings, ceramics, enamel, and glass. It can also be used for coloring high-temperature engineering plastics, and can even be active in the field of art as an art pigment.

Fourth, the production process of cobalt blue pigment

There are three methods for producing cobalt blue: carbonate method, sulfate method, and cobalt oxide method.

Regarding cobalt blue pigment or other inorganic pigments, if you have more questions, please contact us!