Copper smeltingCopper Smelting operationsOperation historically experience severe accretionsAccretion in the transition between the off-gas uptake and the waste heat boilerWaste Heat Boiler (WHB). In flash smelting furnacesFlash smelting furnace (FSF), accretionsAccretion in the uptake outlet grow towards the uptake roof, eventually blocking enough of the off-gas path that the FSF must be shut down for manual cleaning. This results in downtime, worker safetySafety issues, and large falling chunks of solidified buildup that can damage the WHB. A cleaning device was retrofitted at the Glencore Philippine Associated SmeltingSmelting and RefiningRefining Corp (PASAR) smelterSmelter in 2017, which regularly clears the FSF uptake shaft to boiler transition automatically while the furnaceFurnace is online. By regularly removing the accretionAccretion before it accumulates and becomes dense and difficult to remove, PASAR has essentially eliminated issues associated with transition buildup. This small retrofit made significant improvements to the PASAR operationOperation and has proven to be a practical solution to deal with transition buildup, downtime, and operator safetySafety. This paper describes the uptake throatThroat scraper implementation at PASAR smelterSmelter; designDesign features, performancePerformance, and benefits to operationsOperation and worker safetySafety are described.