METHOD FOR REMOVING MAGNESIUM IMPURITIES IN A MANGANESE COMPOUND MANUFACTURING PROCESS

• Main Authors: LEE, CHANG KYU, YOON, BYOUNG HYUN
• Format: Patent
• Language: English; Korean
• Published: 07.07.2015
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INORGANIC CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; SEPARATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The present invention relates to a method for removing magnesium impurities from a manganese compound, the method comprising the steps of: mixing a manganese compound and a sodium-based precipitate; and blowing carbon dioxide to a mixture of the manganese compound and sodium-based precipitate, wherein pH is controlled to 6.5 or less in the step of blowing carbon dioxide. According to the present invention, carbon dioxide is fed together during manganese collecting reaction (precipitation reaction), so that magnesium impurities can be removed from a manganese compound. 본 발명은 망간화합물과 나트륨계 침전제를 혼합하는 단계; 및 망간화합물 및 나트륨계 침전제의 혼합물에 이산화탄소를 블로잉하는 단계를 포함하며, 상기 이산화탄소를 블로잉하는 단계에서 pH는 6.5 이하로 제어되는 망간화합물에서의 마그네슘 불순물의 제거 방법에 관한 것이다. 본 발명에서는 이산화탄소를 망간회수반응(침전반응) 중에 함께 투입하여, 망간화합물에서의 마그네슘 불순물을 제거할 수 있다.