SURFACE CLEANING METHOD OF REFRACTORY STRUCTURES AT INCREASED TEMPERATURES Russian patent published in 2017 - IPC B08B9/93 C10G9/16 

FIELD: technological processes.

SUBSTANCE: cleaning method includes a preliminary technical examination of the refractory structure to develop detailed project of repair organization, removal of the refractory structure door, product delivery from the refractory structure under repair, protection of the refractory structure door opening with special material from the atmospheric temperature effects, preparation of the required materials, equipment and tools for repair, opening the protective material in the doorway near the refractory construction repair area, cleaning of the refractory structure surface by applying an abrasive material through a nozzle to the refractory structure working portion. The refractory structure is cleaned by microcuts formed by applying an abrasive material to the refractory structure processing portion. The abrasive material humidity is not more than 0.2%, the attack angle of is 15°-85°, and the distance from the nozzle to the refractory structure treated surface is 6-11 nozzle diameters.

EFFECT: improved preparation quality of the refractory structures surface to ensure optimal adhesion of the protective coating applied to the refractory structure surface with reduced time of the defective portion processing.

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