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为改善碱浸铀矿浆在浓密机内固液分离效果,提高清液溶剂萃取技术经济指标,在研究了矿浆温度变化对絮凝沉降效果的影响之后,提出了用两步絮凝沉降法:即田菁胶和季铵阳离子型絮凝剂分步加入矿浆,从而显著地改善了碱浸铀矿浆在浓密机内的固液分离效果,溢流液中固体悬浮物的含量低于50ppm,矿浆沉降速度和可压缩性较好。在某铀水冶厂做了扩大试验(处理规模1.5吨矿/日),结果表明该法是可行的,絮凝剂的消耗费用也有所降低。
In order to improve the solid-liquid separation effect of alkali-impregnated uranium slurry in thickener and improve the economic index of solvent extraction technology of clear liquid, after studying the influence of pulp temperature change on the flocculation and sedimentation effect, a two-step flocculation and sedimentation method Glue and quaternary ammonium cationic flocculant added step by step into the pulp, thus significantly improving the solid-liquid separation effect of alkali-impregnated uranium slurry in the thickener. The content of solid suspended solids in the overflow liquid is less than 50ppm, and the sedimentation speed of the pulp can be Compressibility is better. In an uranium watermelon expansion test (processing size of 1.5 tons of ore / day), the results show that the method is feasible, the cost of flocculants also decreased.