Lepidolite flotation reagent and application

The invention relates to the technical field of mineral separation, and provides a lepidolite flotation reagent which comprises the following raw materials in parts by weight: 1-10 parts of ionic liquid, 15-50 parts of polyoxyethylene ether and 10-30 parts of lignin derivatives. The flotation reagent is applied to lepidolite ore flotation, the pH does not need to be adjusted, an inhibitor does not need to be added, the flotation temperature range is wide, the process is simple, the dosage of the flotation reagent is small, the selective collecting capacity and mud resistance are high, the flotation effect on lepidolite at the low temperature is remarkable, and the lepidolite flotation recovery effect is greatly improved. 本发明涉及选矿技术领域，提供了一种锂云母浮选药剂，包括以下重量份的原料：离子液体1～10份、聚氧乙烯醚15～50份、木质素衍生物10～30份。本发明的浮选药剂应用于锂云母矿石浮选中，不需要调节pH和添加抑制剂，浮选温度范围广、工艺简单，浮选药剂的用量小、选择性捕收能力和抗泥性强，低温下对锂云母的浮选效果显著，大幅提高了锂云母浮选回收效果。