| 简介 |
The invention discloses a rare earth metal concentration method with a smelting reduction process; the method comprises the following steps : preparing rare earth metal ore; using the smelting reduction process to carry out smelting reduction treatment for the rare earth metal ore; isolating pig iron after the smelting reduction treatment; isolating slags with concentrated rare earth metal in pig iron isolation. The rare earth metal ore preferably selects the ore containing massive Fe contents; furthermore, the smelting reduction process can be carried out in two reaction formulas (i.e., Fe oxide+carbon to Fe+carbon monoxide, Fe oxide+ carbon monoxide to Fe+carbon dioxide); preferably, the smelting reduction treatment is carried out under reducing atmosphere; furthermore, when the smelting reduction treatment is carried out, coke or solvent can be added to serve as a carbonaceous reducing agent; preferably, relative to a needed theoretical value in ore Fe reduction, 1.5 times of coke is added, and relative to the ore, the solvent under 30% is added. |
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