中文摘要：

为了研究锂渣粒度的分布规律,采用LS-POP（Ⅵ）型激光粒度仪分析锂渣溶液质量浓度、超声分散时间和分散频率、分散介质对锂渣粒度的影响,并讨论SBT-127型数显勃氏透气比表面积仪与激光粒度仪测定比表面积的相关性。结果表明：与煤油和无水乙醇相比,水对锂渣的分散效果较好,适宜用作锂渣的分散介质;采用水为分散介质时,锂渣粒度的检测条件分别是锂渣质量浓度为3~4 g/L,超声分散时间不少于4 min,超声分散频率不小于40 k Hz;以此条件重复5次实验发现,锂渣的粒度分布曲线重合性较好,中位粒径的变异系数小于3%;激光衍射法测定的比表面积比数显勃氏透气法测定的小,但是两者具有较好的相关性。

英文摘要：

To investigate the distribution of lithium slag particle size,the effect of mass concentration of lithium slag solution,ultrasonic dispersion time and frequency,and dispersion medium on particle size of lithium slag was analyzed by a LS-POP（Ⅵ） type laser particle size analyzer. The correlation of specific surface area measured by a SBT-127 type digital Blaine permeability surface area analyzer and a laser particle size analyzer was discussed. The results show that comparing with kerosene and anhydrous ethanol,the dispersion effect of lithium slag is better by water which is suitable for a dispersion medium to lithium slag. Taking water as the dispersion medium,the test conditions of lithium slag particle size are as follows. The mass concentration of lithium slag solution is 3 to 4 g/L,ultrasonic dispersion time is not less than 4 min,and dispersion frequency is not less than 40 k Hz. Repeating the experiment five times with these conditions,it is found that distribution curves coincide of lithium slag particle size is relatively good,and the coefficient of variation of median diameter is less than 3%. The correlation between specific surface areas measured by the methods of laser diffraction and digital Blaine permeability is good,but the former is less than the latter.