CERIUM OXIDE RECOVERY FROM CONCENTRATE OF MONAZITE ORES

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Kargar Razi Maryam; Latifi Abbas; Mahmoudian Masumeh

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Seminar Paper

Paper Information

Seminar: IRANIAN CHEMISTRY CONGRESS
Year:2014 | Issue:17

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Information Seminar Paper

Title

CERIUM OXIDE RECOVERY FROM CONCENTRATE OF MONAZITE ORES

Author(s)

Kargar Razi Maryam | Latifi Abbas | Mahmoudian Masumeh

Keywords

CERIUM OXIDE

RE CONCENTRATE

MONAZITE ORE

PURIFICATION

Abstract

BACKGROUND: THE MAIN SOURCES FOR RARE EARTH ELEMENT ARE IN THE RES ORES SUCH AS MONAZITE, XENOTIM AND BASTANSITE. ONE OF THE MOST FAMOUS OF CLASSICAL ORES THAT FOUND IN MINERAL SOURCES IS MONAZITE. THE CONCENTRATE OF CERIUM AND THE OTHER RARE EARTH ELEMENT IN LOW CONCENTRATION PRODUCED THROUGH ACID LEACHING DIGESTION. THE HIGH VALUE IN COMMERCIAL RATE OF CERIUM SALT DEPENDS ON THEIR QUALITY AND PURITY OF CONCENTRATE. THIS WORK DESCRIBES THE STUDY THE LEACHING PROCESS STEPS FROM MONAZITE MINERALS. THE PARAMETERS CONSIDERED WERE: RATE OF PULP IN ACID LEACHING, PH CONTROL, FILTRATION, PRECIPITATE AGENT, TIME OF ACID LEACHING AND THE EFFECT OF IMPURITIES‟ OF MONAZITE.METHODS: THE CERIUM AND RES CONCENTRATE AND IN THIS EXPERIMENT WAS RESULTED BY MECHANICAL AND PHYSICAL METHODS FOR PURIFICATION AND THE FINAL STEPS ALKALINE DIGESTION AND PURIFICATION OF FILTRATE CONCLUDED. THE CHEMICAL COMPOSITION OF THE CONCENTRATE AS FEED AND INTERMEDIATE PRODUCTS USED IN THIS STUDY WERE ANALYZED BY ICP-MS METHODS. THE OTHER RARE EARTH ELEMENTS WAS REMAINED IN THE FINAL FILTRATE. THE EXPERIMENT WERE CARRIED OUT IN GLASSY VESSEL ON BATCH SYSTEMS. THE PH CONTROL THROUGHOUT THE PROCESS WAS COMPLETED BY AMMONIA SOLUTION.RESULTS: THE AMOUNT OF THE ACIDS AND THE REAGENT ADDED ARE DEPENDED TO STOICHIOMETRIC VALUES. THE EFFICIENCY OF THE PRECIPITATION OF IMPURITIES FROM CONCENTRATE CONCERNS TO TEMPERATURE CONTROL. THE RECOVERY OF CERIUM THROUGH THIS PROCEDURES WAS FORMED BY ORGANIC LIGANDS AS COMPLEXION AGENT. THE INFLUENCE OF KSP COMPLEXES WERE INVESTIGATED. ACCORDING TO THE XRD PATTERNS, CERIUM OXIDE PHASE INCREASED IN FINAL PRECIPITATION.CONCLUSION: PURIFICATION OF CERIUM SALT FROM THE CONCENTRATE STUDIED BY THE MAIN VARIABLES PROCESS TO OXALATE PRECIPITATION AND ITS CONVERSION INTO HYDROXIDE THEN OXIDE IN THE FINAL STEPS. THE ASSAYING YIELD OF CERIUM OXIDE. WITH THE HIGH PURITY GREATER THAN 88%. THIS PROJECT LEADS TO SUB SUBSTANTIAL ECONOMY, AS CHEMICAL REAGENT AND ENERGY CONCERNED, THUS MAKING THE CERIUM OXIDE RECOVERY IN WET CHEMICAL PROCESS.

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APA: Copy

Kargar Razi, Maryam, Latifi, Abbas, & Mahmoudian, Masumeh. (2014). CERIUM OXIDE RECOVERY FROM CONCENTRATE OF MONAZITE ORES. IRANIAN CHEMISTRY CONGRESS. SID. https://sid.ir/paper/913693/en

Vancouver: Copy

Kargar Razi Maryam, Latifi Abbas, Mahmoudian Masumeh. CERIUM OXIDE RECOVERY FROM CONCENTRATE OF MONAZITE ORES. 2014. Available from: https://sid.ir/paper/913693/en

IEEE: Copy

Maryam Kargar Razi, Abbas Latifi, and Masumeh Mahmoudian, “CERIUM OXIDE RECOVERY FROM CONCENTRATE OF MONAZITE ORES,” presented at the IRANIAN CHEMISTRY CONGRESS. 2014, [Online]. Available: https://sid.ir/paper/913693/en

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