System for calcination aluminium hydroxide recycle -water steam

• Main Authors: MA PING, WANG XINJUN, GUO JIANQIANG, LIU HEQUN
• Format: Patent
• Language: English
• Published: 30.12.2015
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INORGANIC CHEMISTRY; METALLURGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The utility model belongs to the technical field of oxidation aluminium production, in particular to system for calcination aluminium hydroxide recycle -water steam, including water vapor -recovery unit, main stove, suspension separation heat exchanger and heat transfer device, water vapor -recovery unit's feed inlet and aluminium hydroxide feeder intercommunication, water vapor -recovery unit's discharge gate and the feed inlet of main stove intercommunication, the discharge gate of main stove and the feed inlet intercommunication of suspension separation heat exchanger, the powder export of suspension separation heat exchanger is the discharge gate, gas outlet and heat transfer device's air inlet intercommunication, heat transfer device's gas outlet and gas treating system intercommunication. The utility model discloses a system has retrieved the water of crystallization and the attached water of aluminium hydroxide calcination in -process, carries out cycle recycle, can reduce the electric energy and the thermal energy consumption of calcination process, promotes energy saving and emission reduction, has increased the economic benefits of enterprise.