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    • 10. 发明申请
    • PARTICLE SEPARATION IN METHOD FOR RECOVERING MAGNETITE FROM BAUXITE RESIDUE
    • 从宝石残留物回收磁铁的方法中的颗粒分离
    • WO2016085961A1
    • 2016-06-02
    • PCT/US2015/062383
    • 2015-11-24
    • GLOBAL MINERAL RECOVERY, INC.
    • AMIRAN, Mohsen
    • C01G49/08C22B34/12C22B21/02
    • C01G49/08C01B32/40C01F7/066C01G23/053C22B1/005Y02P10/212Y02P20/142
    • A method of recovering magnetite from bauxite residue (62), comprising reducing the pH (63) of the bauxite residue (62) to form a treated bauxite residue, drying (64) the treated bauxite residue, adding to and mixing into (65) the treated bauxite residue a solid source of carbon (66), to create a mixture, heating the mixture to a reduction temperature of at least 800° C in a reducing reactor (67) to produce a reduced bauxite residue in which a major portion of Fe 2 0 3 present in the treated bauxite residue has been converted to Fe 3 0 4 exposing the reduced bauxite residue to a particle separation step (71), and then separating (72) the reduced bauxite residue into an iron-enriched portion (73) and an iron- depleted portion (74).
    • 一种从铝土矿残渣(62)回收磁铁矿的方法,包括降低铝土矿残渣(62)的pH(63)以形成处理的铝土矿残渣,干燥(64)处理的铝土矿残渣,加入并混合到(65) 处理的铝土矿残余物是固体碳源(66),以产生混合物,在还原反应器(67)中将混合物加热至至少800℃的还原温度以产生还原的铝土矿残渣,其中主要部分 存在于经处理的铝土矿残渣中的Fe 2 O 3已经转化为Fe 3 O 3,将还原的铝土矿残渣暴露于颗粒分离步骤(71),然后将还原的铝土矿残渣分离(72)至铁富集部分(73)和铁贫 部分(74)。