METHOD FOR ENGOBING BLOCK FOAM GLASS Russian patent published in 2023 - IPC C03C17/22 

FIELD: engobing building materials.

SUBSTANCE: methods for engobing building materials, including block foam glass. In particular, a method for engobing block foam glass is claimed, which includes grinding, screening and homogenizing white-burning clay with technical alumina, supplying a mechanical mixture of powders to a powder feeder, plasma spraying with simultaneous melting of the front surface of block foam glass at a plasma torch power of 4 kW, quality control of finished products. At the same time, colemanite is added to white-burning clay with technical alumina at a ratio of 3:1:1. Plasma spraying is carried out at a flow rate of plasma-forming gas of 0.2 m³/min, and the speed of passage of the plasma torch along the front surface of the block foam glass is 0.4 m/s.

EFFECT: improvement of quality of the finished product while speeding up the process.

1 cl, 3 tbl