碳酸锂气力输送系统的设计与验证试验

碳酸锂是生产新能源动力电池的粉体材料,不论是粉碎、分级还是包装都离不开粉体的输送,其中气力输送应用更广。简介闭式气力输送系统及新能源电池材料生产输送应用中备受关注的闭式氮气气力输送系统,通过对碳酸锂气力输送系统的工艺分析,进行碳酸锂闭式氮气气力输送系统的设计及主要设备选型,并通过试验验证本气力输送系统的应用效果。验证试验结果表明:本碳酸锂闭式氮气气力输送系统,对碳酸锂颗粒直径几乎没有影响;输送后的碳酸锂磁性物含量略有增加,但增加比例小于1%;回风文丘里加料器进风速度会显著影响碳酸锂的产量,两者呈负相关关系,回风风速过大或过小均会对系统运行产生不利影响;保持24 m/s的回风风速时碳酸锂平均产量最高可达214 kg/h,实际应用中可将回风风速设置在24 m/s左右。

Study of measurements of air velocity transducer deriving average air velocity of roadway based on one-dimensional linear regression

One-dimensional linear regression equation between measured value of air velocity transducer and the average air velocity was established by experimental data. The effect is to be evaluated. Through judging the parameters, one-dimensional linear equation established is valid. Regression equation can approximately put the measurements of air velocity transducer into the value of average air velocity. The distribution of air velocity field is simulated using Comsol in the conditions of the same length of roadway, the same air velocity and different sections.