CHARGE FOR PRODUCTION OF CERAMIC PIGMENT OF BLUE-GREEN COLOUR Russian patent published in 2009 - IPC C03C1/04 

FIELD: mining.

SUBSTANCE: following is introduced in charge: annealed product of Cygler-Natt complex of catalytic neutralisation, natural wollastonite, silicon oxide, colouring chromium oxides Cr₂O₃ and cobalt oxides CoO, and boron oxide B₂O₃. The said components are taken at following ratio, wt %: product of Cygler-Natt complex of catalytic neutralisation 32-34, wollastonite CaO-SiO₂ 40-42, silicon oxide SiO₂ 11-12, chromium oxide Cr₂O₃ 7-10, cobalt oxide CoO 3-5, boron oxide B₂O₃ 2. Temperature of synthesis of pigment is 1100-1200°C.

EFFECT: production of ceramic pigments of blue-green colour in systems CaO-Al₂O₃-SiO₂, CaO-TiO₂-SiO₂, expanding colour palette of ceramic items, improving consumer properties of pigments.

1 ex, 2 tbl