METHOD OF REDUCING SCALE IN THE BAYER PROCESS

• Main Authors: STIGERS, DANNON, CALBICK, CHESTER, J, CYWAR, DOUGLAS, A, KULA, FRANK, TAYLOR, MATTHEW
• Format: Patent
• Language: English; French
• Published: 02.07.2015
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; INORGANIC CHEMISTRY; METALLURGY; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25; NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Methods for reducing aluminosilicate containing scale in a Bayer process involving treating a Bayer process equipment surface with a scale inhibiting composition having high ionic strength prior to exposure to a Bayer process stream. L'invention concerne des procédés de réduction de la calamine contenant de l'aluminosilicate dans un procédé Bayer impliquant le traitement d'une surface d'équipement de procédé Bayer avec une composition d'inhibition de la calamine ayant une force ionique élevée avant exposition à un flux de procédé Bayer.