Method of recovering titanium and iron from ferrotitanium middlings

• Main Authors: YU ZHENSHENG, CHEN MIAO, HE CHANGJIANG, LU YONG, WANG TIANKAI, LIU CHACHUN, BAI JIANCHENG, WANG TIEYI, CHEN QUANFENG, HUANG CHAO, LYU LUPING
• Format: Patent
• Language: Chinese; English
• Published: 27.03.2020
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MANUFACTURE OF IRON OR STEEL; METALLURGY; METALLURGY OF IRON; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention provides a method of recovering titanium and iron from ferrotitanium middlings. The method comprises the following steps of passing the ferrotitanium middlings through a reduction shaftfurnace to make iron; then separating iron and titanium dioxide from a melting component in an electric furnace, wherein titanium dioxide in-slag floats on an upper liquid level of molten iron; and then removing the slag to obtain a high titanium material, the TiO2 content of which is 70-75wt% and high purity molten iron, the iron content of which reaches 98wt%. It is verified by experiments thatthe TFe content in the high titanium material obtained by the method is 4-6wt% and the TiO2 content of artificial rutile extracted and separated from the high titanium material is 90-95wt%, so that titanium and iron in the ferrotitanium middlings are efficiently recovered, separately. 本申请提供了一种从钛铁中矿中回收钛与铁的方法，将钛铁中矿先通过还原竖炉炼铁，然后在电炉中熔分分离铁与二氧化钛，使得二氧化钛入渣漂浮在铁水的上液面，然后除渣得到TiO含量为70wt％～75wt％的高钛料和含铁量达到98wt％以上的高纯铁液；经实验证明，该方法得到的高钛料中TFe含量