低浓度含锂废液生产磷酸锂的工艺研究

doi:10.11962/1006-4990.2019-0376

Abstract

Abstract:

Lithium was recovered from low-lithium and high-salt solution by phosphoric acid precipitation method.The effects of pH,temperature and phosphate concentration on lithium recovery rate and product impurity removal were studied.The re-sults showed that for high-salt and low-lithium solutions,the reaction temperature was 90 ℃,the mass fraction of 80% of phosphoric acid was 1.1 times the reaction amount and the pH of the solution before the reaction was at 7.5~8,then the recovery rate of lithium was 96.82%, and the product quality met the industry standards requirements.The method has the advantages of high conversion rate,full utilization of lithium resources,simple process,easy to operate and easy to industrialize.It is providing a certain theoretical guidance for the recovery of lithium in low-concentration lithium-containing solutions.

Key words: phosphoric acid, lithium-containing solution, battery recovery, lithium phosphate

CLC Number:

TQ131.11

Zhang Xiaoxia. Study on process of producing lithium phosphate by low-concentration lithium-containing waste liquid[J]. Inorganic Chemicals Industry, 2020, 52(5): 68-70.

ρ（Li）	ρ（Na）	ρ（Fe）	ρ（Mg）	ρ（Ca）
3.18	40.0	0.570	0.512	0.553
ρ（Cu）	ρ（Ni）	ρ（Pb）	ρ（Cl）	ρ（SO₄^2-）
0.848	0.075	0.011	0.032	112

项目		主含量（质量分数）	杂质含量
项目		主含量（质量分数）	w（Ca）	w（Mg）	w（Fe）	w（Cu）	w（Pb）	w（Ni）	w（Cl）
YS/T637—2007	FCLi₃PO₄-1	≥99.9	≤0.002 0	≤0.001	≤0.000 5	≤0.000 1	≤0.000 1	≤0.000 1	≤0.08
	FCLi₃PO₄-2	≥98.0	≤0.002 0	≤0.001	≤0.000 5	≤0.000 1	≤0.000 1	≤0.000 1	≤0.10
	FCLi₃PO₄-3	≥95.0	≤0.003 5	≤0.002	≤0.001 0	≤0.000 1	≤0.000 1	≤0.000 1	≤0.50
实验产品		99.92	0.002 0	0.001	0.000 5	0.000 1	0.000 1	0.000 1	0.05

[1]	谢英豪, 余海军, 欧彦楠 , 等. 废旧动力电池回收的环境影响评价研究[J] 无机盐工业, 2015,47(4):43-46.
[2]	刘帆, 周有池, 王林生 , 等. 从废旧锂离子电池提钴后液中回收锂[J] 无机盐工业, 2017,49(2):50-53.
[3]	陈若葵, 王杜, 谭群英 , 等. 磷酸盐沉淀法从低浓度含锂溶液中回收锂的研究[J] 矿冶工程, 2016,36(5):97-99.
[4]	侯红军, 杨华春, 刘海霞 , 等. 一种利用含锂废液生产磷酸锂的方法：中国,102815680[P]. 2014-03-26.

[1]	ZHANG Li, ZHANG Dan, PAN Hongyan, DONG Yonggang, LI Wenfei, QIN Hong. Study on preparation of low ash activated carbon by phosphoric acid method [J]. Inorganic Chemicals Industry, 2024, 56(2): 95-103.
[2]	HUANG Zhaojie, ZHAO Xiaoxu, WANG Haitao, CHANG Na, ZHANG Guoxin, XIE Yonglei, YIN Yanmei, LU Na, WANG Wei. Study on ultrafiltration+nanofiltration double membrane treatment of iron process iron phosphate production wastewater [J]. Inorganic Chemicals Industry, 2024, 56(11): 145-150.
[3]	JIN Shengshi, LIU Kaijie, LIU Qiuwen, ZHANG Yibo, YANG Xiangguang. Study on catalytic performance of phosphoric acid modified CeO₂ nanorod supported Pt catalyst for propane combustion [J]. Inorganic Chemicals Industry, 2024, 56(1): 141-148.
[4]	ZHANG Ying, LI Jun, JIN Yang, HUANG Meiying. Study on pyrolysis regeneration of activated carbon for Tributyl phosphate decolorization [J]. Inorganic Chemicals Industry, 2024, 56(1): 59-66.
[5]	LI Jiaqiang, LI Jun, JIN Yang, CHEN Ming. A gas chromatographic analysis method for acetic acid content in phosphoric acid and acetic acid mixed system [J]. Inorganic Chemicals Industry, 2023, 55(5): 115-120.
[6]	CHEN Yujue, ZHANG Liangjun, KUANG Huan, JIANG Manwen, XIAO Li. Study on roasting and recovery process of waste lithium iron phosphate powder with sodium bisulfate [J]. Inorganic Chemicals Industry, 2023, 55(3): 113-117.
[7]	ZHOU Qinglie, WANG Baoqi, ZHANG Zhiye, ZHANG Yinghu, WANG Jian, YANG Lin. Development of new process of removing metal cations from wet-process phosphoric acid by extraction [J]. Inorganic Chemicals Industry, 2023, 55(3): 84-91.
[8]	TIAN Zhuangzhuang, CHEN Jianjun, JIN Yang, CHEN Ming, LI Jun, LIU Daijun. Experimental study on removing metal ions from phosphoric acid by nanofiltration membrane [J]. Inorganic Chemicals Industry, 2023, 55(12): 133-139.
[9]	HE Fuduo, YUAN Yifan, ZHOU Xiaohou, XU Lu, SUN Chongqing, WANG Xinlong, XU Dehua. Preparation of monoammonium phosphate containing amino acid from waste feathers by in situ acid hydrolysis of wet process of phosphoric acid [J]. Inorganic Chemicals Industry, 2023, 55(10): 100-105.
[10]	HE Lei,ZHU Ganyu,ZHENG Guangming,WU Wenfen,ZhANG Jianbo,LI Fang,LI Huiquan,CHEN Wen. Study on crystallization process and mechanism of phosphogypsum in wet process phosphoric acid system [J]. Inorganic Chemicals Industry, 2022, 54(7): 110-116.
[11]	FU Ziqi, ZHANG Cheng, SHENG Yong, JI Lijun. Study on preparation of phosphoric acid by leaching fluoride residue from wet-process phosphoric acid with organic solvents [J]. Inorganic Chemicals Industry, 2022, 54(7): 129-134.
[12]	GUO Chunping,ZHOU Youchi,WEN Xiaoqiang,LIU Wenwen,HONG Kan,HUANG Yetian. Study on preparation process of battery-grade lithium carbonate from slag containing lithium phosphate [J]. Inorganic Chemicals Industry, 2022, 54(3): 82-86.
[13]	ZHENG Hanxiao,LÜ Li,TANG Shengwei,HE Yanjun,ZHANG Tao. Leaching behavior of phosphate ore in phosphoric acid [J]. Inorganic Chemicals Industry, 2022, 54(10): 96-101.
[14]	WANG Xianshun,DOU Yan,WANG Qi,CUI Peng,MA Jun,SHEN Hao,ZHENG Zhiyin,LIU Rong. Identification of colored substances in wet process phosphoric acid leaching slurry [J]. Inorganic Chemicals Industry, 2022, 54(1): 86-90.
[15]	Su Shu,Xu Dehua,Li Chaorong,Yang Xiushan,Wang Xinlong,Zhang Zhiye. Study on defluorination of phosphoric acid by nitric acid process [J]. Inorganic Chemicals Industry, 2021, 53(9): 24-29.

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Study on process of producing lithium phosphate by low-concentration lithium-containing waste liquid

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 5

References 4

Related Articles 15

Metrics

Comments

Recommended 0