C01F7/20—Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts
C01F7/24—Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts with nitric acid or nitrogen oxides
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
Y02W30/00—Technologies for solid waste management
Y02W30/50—Reuse, recycling or recovery technologies
Y02W30/91—Use of waste materials as fillers for mortars or concrete
Nouveau procédé de traitement antipollution d'un catalyseur de raffinage à l'état usé et récupération totale des différents constituants métalliques dudit catalyseur