APPARATUS FOR REMOVING SCALE FROM ROLLED PRODUCT Russian patent published in 1995 - IPC

FIELD: metallurgy. SUBSTANCE: apparatus has abrasive powder hopper 2, abrasive powder recovery chamber 1 positioned above hopper 2, rolled product cleaning chamber 3 disposed below hopper 2 and provided with powder delivery mechanism and used powder receiving chamber 13, which is positioned at outlet end of cleaning chamber 3. Chamber 13 is communicated with atmosphere and connected through pipeline 12 with powder recovery chamber 1. Upper part of powder recovery chamber 1 is connected with dust-catcher 18. Apparatus is further provided with exhaust fan having drive 19 and adapted for conveying used powder through pipeline. Lower part of powder recovery chamber 1 is connected with atmosphere through intake opening 20 with variable effective section. Recovery chamber 1 has cascade of membranes 22 and screens 24. EFFECT: improved separation of scale from powder and efficient recovery of powder for further usage. 2 cl, 1 dwg