Application of Spent Coffee Grounds (SCGs) as a Fuel and Alternative Reducer of Slags from the Copper Industry

This article presents the results of a study on metallurgical slag reduction using biomass such as Spent Coffee Grounds (SCGs). The proposed solution is new aspect searching for alternatives to standard reducers used in pyrometallurgical processes metal production. Its gasification yields significant amounts hydrocarbons, which are excellent reducing agents processes. research copper with use SCG indicate this process characterised by lower carbon dioxide emissions compared solid fuels coke and breeze. addition reducer ensures decrease content 0.32 wt.%, corresponds increase so-called relative decopperisation degree even up 96.9%. As increases, significantly more intense lead oxides during observed. smallest waste 0.91 wt.% was obtained 7.56 duration 1.5 h.