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发明公开
CN108374085A 一种页岩提钒酸浸液的除铁方法 无效 - 驳回

一种页岩提钒酸浸液的除铁方法
摘要：
本发明具体涉及一种页岩提钒酸浸液的除铁方法。其技术方案是：根据页岩提钒酸浸液中K和Fe的浓度，向所述页岩提钒酸浸液加入钾盐至所述页岩提钒酸浸液中的Fe∶K的摩尔比为1∶(1～3.5)，即得处理原液。将所述处理原液在温度为150～300℃、氧分压为0.5～2.5MPa和转速为200～400r/min的条件下搅拌3.5～6h，得到混合料浆。将所述混合料浆进行固液分离，得到除铁后液和斜钾铁矾渣。所述钾盐为硫酸钾、氯化钾、硫酸氢钾中的一种以上。所述页岩提钒酸浸液：钒浓度为0.8～4.5g/L；铁为4～18g/L；pH值为-0.80～0。本发明具有工艺简单和在pH＜0的条件下能实现有效除Fe的特点。
摘要（英）：

The invention particularly relates to an iron removing method of shale-vanadium-extraction acid leaching solution. The invention adopts the technical scheme that the iron removing method comprises thefollowing steps: according to the concentrations of K and Fe in the shale-vanadium-extraction acid leaching solution, adding potassium salt into the shale-vanadium-extraction acid leaching solution till the molar ratio of Fe to K is 1 to (1 to 3.5), and obtaining treating stock solution; stirring the treating stock solution for 3.5-6 hours under the conditions that the temperature is 150-300 DEGC, the oxygen partial pressure is 0.5-2.5MPa and the rotating speed is 200-400r/min, and obtaining mixed slurry; carrying out solid-liquid separation on the mixed slurry, and obtaining iron-removed liquid and yavapaiite slag, wherein the potassium salt is more than one of potassium sulfate, potassium chloride and potassium hydrogen sulfate. In the shale-vanadium-extraction acid leaching solution,the concentration of vanadium is 0.8-4.5g/L, the concentration of iron is 4-18g/L and the pH value is minus 0.80-0. The iron removing method has the characteristic that the process is simple, and effective removal of Fe can be realized under the condition that the pH is less than 0.

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