Process development for the recovery of high grade calcium tungstate from alkaline leach liquor of spent HDS catalyst
Sign Up to like & getrecommendations! Published in 2020 at "Hydrometallurgy"
DOI: 10.1016/j.hydromet.2019.105237
Abstract: Abstract Molybdenum is often associated with nickel-tungsten based spent HDS catalyst and must be removed from tungstate solution to obtain commercially acceptable tungsten products. In order to address this problem, a different approach has been… read more here.
Keywords: calcium tungstate; high grade; hds catalyst; spent hds ... See more keywords
Microwave sodium roasting (MWSR) spent HDS catalysts for recovery Mo and in situ sulfur fixation
Sign Up to like & getrecommendations! Published in 2019 at "Journal of the Taiwan Institute of Chemical Engineers"
DOI: 10.1016/j.jtice.2019.01.009
Abstract: Abstract The heat pretreatment of the spent hydrodesulfurization (HDS) catalysts plays an important role in its comprehensive recycling. In this work, the microwave sodium roasting (MWSR) strategy was used for the heat treatment of the… read more here.
Keywords: sulfur fixation; spent hds; hds catalysts; microwave sodium ... See more keywords