含钒钢渣浸出矿浆多级连续逆流洗涤试验研究  

Experimental study on multistage continuous countercurrent decantation for vanadium containing leaching ore pulp

作　　者：方臣 Fang Chen(Changsha Research Institute of Mining and Metallurgy Co.,Ltd.,Changsha 410012,Hunan,China)

机构地区：[1]长沙矿冶研究院有限责任公司,湖南长沙410012

出　　处：《钢铁钒钛》2023年第1期20-25,共6页Iron Steel Vanadium Titanium

摘　　要：含钒钢渣浸出矿浆絮凝浓缩提高浓度,然后采用多级连续逆流洗涤工艺将高浓度矿浆液相内的钒离子洗脱至洗液用于后续回收。通过絮凝沉降试验对洗涤工艺中的沉降参数进行研究,确定了钒渣浸出矿浆适用的絮凝剂为APAM-625V,用量40 g/t,最佳初始矿浆浓度10%,各级洗涤矿浆底流浓度62%。利用洗涤各级的物料平衡原理,列出钒离子在各级溶液组分的“一次多元联立方程组”,计算出在洗涤液固比为1,洗涤级数5的条件下,钒离子的理论洗涤效率为97%。以计算出的洗涤工艺参数进行多级连续逆流洗涤试验验证,钒离子的洗涤效率为96.4%,与理论计算结果基本一致。After acid leaching of vanadium-bearing steel slag, the slurry is flocculated and concentrated to produce high-concentration leached slag. For subsequent recovery of vanadium ions, the multistage continuous countercurrent decantation is used to wash the leached residue. Through the flocculation sedimentation experiment, it is determined that the suitable flocculant for this pulp is APAM-625V, the dosage is 40 g/t, the optimal initial feed concentration is 10%, and the pulp underflow concentration after washing at each levels is 62%. Based on the principle of material balance of each washing stage in the washing process, the “first-order multivariate simultaneous equations” of the solution components of the vanadium slag leaching pulp in the washing process were calculated. The results of theoretical calculation show that the washing efficiency of vanadium ion is 97% under the condition of washing liquid-solid ratio of 1 and washing order of 5. The vanadium ion washing efficiency is 96.4% in the continuous countercurrent decantation experimentation research, which is basically consistent with the theoretical calculation results.

关 键 词：提钒 含钒钢渣 酸浸液 CCD逆流洗涤 浓密机 洗涤效率 

分 类 号：TF841.3[冶金工程—有色金属冶金] X757[环境科学与工程—环境工程]