Featured　Application　This　paper　will　play　remarkable　guiding　roles　in　the　engineering　optimization　of　slurry　blast　devices　for　steel　strip　descaling　and　the　application　to　the　surface　treatment　of　other　metal　structures.　Under　the　requirement　of　clean　production,　a　new　type　of　slurry　blast　device　for　mechanically　removing　oxide　scale　on　the　surface　of　steel　strips　is　presented,　which　can　avoid　the　serious　problems　of　rapid　wear,　low　service　life,　and　low　efficiency　of　the　traditional　abrasive　water　jet　with　a　nozzle.　In　this　paper,　the　numerical　simulation　of　the　rotating　blade　centrifugal　jet　in　the　slurry　blast　device　is　conducted　based　on　CFD,　where　the　DPM　and　the　erosion　model　are　innovatively　employed　to　simulate　the　movement　characteristics　of　abrasive　particles　and　the　erosion　rate　of　mixed　slurry　on　the　surface　of　the　steel　strip.　Simulation　results　show　that　the　erosion　rate　and　particle　motion　velocity　are　proportional　to　the　blade　rotation　speed　and　inlet　pressure.　Reasonable　inlet　pressure　and　rotation　speed　are　helpful　for　improving　the　rust　removal　efficiency　of　slurry　blast　devices.　An　experimental　system　is　established　to　validate　the　simulation　results.　The　experimental　results　are　consistent　with　the　simulation　trend,　which　exhibits　that　the　developed　slurry　blast　device　is　feasible　for　steel　strip　descaling.　This　work　will　play　substantial　guiding　roles　in　the　engineering　optimization　of　slurry　blast　devices　for　steel　strip　descaling.