一步碳化法制备电池级Li_(2)CO_(3)的正交实验研究  

Orthogonal Experimental Study on Preparation of Battery-grade Li_(2)CO_(3) by One-step Carbonization Method

作　　者：张立龙 贾贵斌 黄浩 宋小鹏 胡坤 ZHANG Lilong;JIA Guibin;HUANG Hao;SONG Xiaopeng;HU Kun(Jiangxi Ewinway New Material Co.,Ltd.,Jiangxi Yichun 330700,China)

机构地区：[1]江西云威新材料股份有限公司,江西宜春330700

出　　处：《广州化工》2024年第23期38-41,共4页GuangZhou Chemical Industry

摘　　要：电池级Li_(2)CO_(3)在锂离子电池领域有着广泛的应用,但由于制备过程中影响因素众多,如何高效地制备电池级Li_(2)CO_(3)的文章鲜有报道。本研究在此详细地报道了一种一步碳化制备电池级Li_(2)CO_(3)的方法。研究以氢氧化锂为原料,采用气液反应制备电池级Li_(2)CO_(3),并详细探究了炭化过程中,炭化温度、原料浓度、搅拌速度和气体流速这四个影响因子对Li_(2)CO_(3)产率和纯度的影响规律。最后,在反应时间1 h、原料浓度(以含锂量计)34 g/L、反应温度90℃、CO 2气体流速1.0 L/min、搅拌速度100 r/min的实验条件下,获得了主含量为99.7%以及产率为92.4%的电池级碳酸锂产品,为工业上制备电池级Li_(2)CO_(3)提供一定的参考。Battery-grade Li_(2)CO_(3)has been widely used in the field of lithium-ion batteries.However,due to many influencing factors in the preparation process,there are few reports on how to efficiently prepare battery-grade Li_(2)CO_(3).In this study,a one-step carbonization method for preparing battery grade Li_(2)CO_(3)is reported in detail.Lithium hydroxide was used as raw material to prepare battery-grade Li_(2)CO_(3)by gas-liquid reaction,and the carbonization process is explored in detail.The effect of carbonization temperature,raw material concentration,stirring speed and gas flow rate on the yield and purity of Li_(2)CO_(3)product.Finally,under the experimental conditions of reaction time of 1 h,raw material concentration(measured by lithium content)of 34 g/L,reaction temperature of 90℃,CO 2 gas flow rate of 1.0 L/min,stirring speed of 100 r/min,the battery-grade lithium carbonate product with main content of 99.7%and yield of 92.4%was obtained,providing a method for the preparation of battery grade Li_(2)CO_(3)in industry.

关 键 词：电池级碳酸锂 锂化合物 碳化反应 气液反应 正交实验法 

分 类 号：TQ131.1[化学工程—无机化工]