METHOD FOR CLEANING OF HARD SURFACES FROM CONTAMINANTS Russian patent published in 2009 - IPC B08B3/02 

FIELD: technological processes.

SUBSTANCE: cleaning is done in two stages, at the first stage aqueous solution of detergent is prepared with concentration of 1:2-1:10, then through device connected to reservoir with detergent solution, water is supplied with pressure of 50-100 bar, "dry foam" produced in process of mixture passing through foam-generating grid, is applied on processed surface with layer of 10-30 mm thickness and maintained on surface for 5-10 min, at the second stage reservoir is disconnected from device, and nozzle for water supply is connected, through which foam is washed off processed surface. Method prevents soaking of processed surface, thus maintaining its safety, prolongs further service life prior to restoration, may be used for cleaning of surfaces with high wear, high number of cracks and pores.

EFFECT: higher efficiency due to reduced time for cleaning and convenience in use.

5 cl, 2 dwg, 3 ex