METHOD OF PRODUCING IRON-CONTAINING PIGMENT FOR WALL CERAMICS Russian patent published in 2025 - IPC C09C1/24 C09C3/04 C04B14/30 

FIELD: chemistry.

SUBSTANCE: invention relates to production of inorganic pigments. Disclosed is a method of producing brown iron-containing pigments for wall ceramics, including preliminary grinding of crystalline shale of the Kursk magnetic anomaly, heat treatment is carried out in a plasma reactor for 2-3 seconds at a temperature of the plasma jet of 6000-6500 K and subsequent grinding in a centrifugal-planetary mill to particle size of 3.6-3.4 mcm with specific surface area of 620-640 m²/kg.

EFFECT: invention ensures acceleration of the technological process and reduction of energy costs.

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