METHOD FOR PRODUCING WHITE CEMENT CLINKER Russian patent published in 2021 - IPC C04B7/44 

FIELD: white cement clinker production.

SUBSTANCE: invention relates to methods for producing white cement clinker and can be used in the building materials industry. Obtaining white cement clinker includes preparing a raw mixture, roasting it in a rotary kiln of a wet production process, feeding the additive through a dust nozzle from the hot end and quenching in water. Before firing, the raw mixture is mixed with the dust of the dust-collecting devices of the rotary kiln, firing occurs at a temperature of 1250-1350°C, and a dust-like mineralizer 2C₂S·CaF₂ is fed into the rotary kiln through a dust nozzle in an amount of 1.5-11% to the material temperature range 845-1255°C, crushed to a residue on a sieve №02 not more than 5% and a residue on a sieve No.008 not more than 20%. The angle between the horizontal axis of the rotary kiln cross-section and the line passing through the axes of the dust nozzle and the fuel nozzle is 30-90°C, the distance between the axes of the fuel and dust nozzles is 250-2500 mm, the distance the dust nozzle is extended relative to the fuel nozzle, is 0-2000 mm, the angle of inclination of the axis of the dust nozzle relative to the axis of the fuel is 0-30°C.

EFFECT: white cement clinker production improvement as well as increased stability of the quality characteristics of white cement clinker.

1 cl, 3 dwg, 2 tbl