从白云鄂博稀土尾矿回收铁的新工艺
发布时间：2018-08-04 21:06
【摘要】：根据弱磁性白云鄂博稀土尾矿在N_2环境下升温-降温过程中磁化率的变化,确定尾矿经磁化焙烧、弱磁选回收铁的可行性。对样品进行原位XRD分析进一步证实了在升温过程温度升至580℃时Fe_3O_4开始出现。通过大量实验,在N_2气氛、无任何添加还原剂的情况下直接磁化焙烧,之后用弱磁选回收铁,发现在焙烧温度800℃,磁选粒度在-45~+74μm之间时,精矿中的TFe由尾矿的17%提高到61.5%,实现了76.8%回收率的良好指标。
[Abstract]:According to the change of magnetic susceptibility in the process of heating and cooling of rare earth tailings of Bayan Obo in the environment of Ns _ 2, the feasibility of recovering iron from tailings by magnetization roasting and weak magnetic separation is determined. In situ XRD analysis of the samples further confirmed that Fe_3O_4 began to appear when the temperature increased to 580 鈩，
本文编号：2165140
[Abstract]:According to the change of magnetic susceptibility in the process of heating and cooling of rare earth tailings of Bayan Obo in the environment of Ns _ 2, the feasibility of recovering iron from tailings by magnetization roasting and weak magnetic separation is determined. In situ XRD analysis of the samples further confirmed that Fe_3O_4 began to appear when the temperature increased to 580 鈩，
本文编号：2165140
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