废旧磷酸铁锂电池电极材料的硫酸化焙烧-水浸新工艺

张肖洒, 王宏源, 李振彪, 夏志美

New process of sulfated roasting-water leaching for treating electrode material of spent lithium iron phosphate batteries

Xiaosa ZHANG, Hongyuan WANG, Zhenbiao LI, Zhimei XIA

表3 硫酸化焙烧-水浸正交实验结果

Table 3 Orthogonal experiment results of sulfated roasting and water leaching

实验号 A B C D E F Fe浸出率/% 1 1.0 0.5 80 4.0/1 40 0.5 96.73 2 1.0 1.0 90 4.5/1 50 1.0 99.82 3 1.0 1.5 100 5.0/1 60 1.5 99.89 4 1.0 2.0 110 5.5/1 70 2.0 98.52 5 1.0 2.5 120 6.0/1 80 2.5 98.14 6 1.1 0.5 90 5.0/1 70 2.5 96.93 7 1.1 1.0 100 5.5/1 80 0.5 99.12 8 1.1 1.5 110 6.0/1 40 1.0 98.87 9 1.1 2.0 120 4.0/1 50 1.5 99.25 10 1.1 2.5 80 4.5/1 60 2.0 99.35 11 1.2 0.5 100 6.0/1 50 2.0 98.29 12 1.2 1.0 110 4.0/1 60 2.5 99.38 13 1.2 1.5 120 4.5/1 70 0.5 99.25 14 1.2 2.0 80 5.0/1 80 1.0 99.62 15 1.2 2.5 90 5.5/1 40 1.5 96.99 16 1.3 0.5 110 4.5/1 80 1.5 99.72 17 1.3 1.0 120 5.0/1 40 2.0 99.34 18 1.3 1.5 80 5.5/1 50 2.5 96.56 19 1.3 2.0 90 6.0/1 60 0.5 98.21 20 1.3 2.5 100 4.0/1 70 1.0 97.92 21 1.4 0.5 120 5.5/1 60 1.0 95.87 22 1.4 1.0 80 6.0/1 70 1.5 99.75 23 1.4 1.5 90 4.0/1 80 2.0 99.82 24 1.4 2.0 100 4.5/1 40 2.5 99.62 25 1.4 2.5 110 5.0/1 50 0.5 99.21 K1 98.62 97.508 98.402 98.62 98.31 98.504 — K2 98.704 99.482 98.354 99.552 98.626 98.42 — K3 98.706 98.878 98.968 98.998 98.54 99.12 — K4 98.35 99.044 99.14 97.412 98.474 99.064 — K5 98.854 98.322 98.37 98.652 99.284 98.126 — R 0.504 1.974 0.786 2.14 0.974 0.994 —