Simple process for lithium extraction from α-spodumene with potassium fluoride: Modeling and optimization

被引：9

作者：

Rosales, Gustavo D. ^{[1
]}

Resentera, Alexander C. ^{[1
]}

Braga, Paulo F. A. ^{[2
]}

Esquivel, Marcelo R. ^{[3
,4
]}

Rodriguez, Mario H. ^{[1
]}

机构：

[1] Univ Nacl Cuyo, UNCUYO, CONICET, Inst Interdisciplinario Ciencias Basicas ICB,Fac C, Padre Contreras 1300, RA-5500 Mendoza, Argentina

[2] Ctr Mineral Technol CETEM, Ave Pedro Calmon 900, BR-21941908 Rio De Janeiro, RJ, Brazil

[3] CNEA, CONICET, Ctr Atom Bariloche, Av Bustillo Km 9-5, RA-8400 San Carlos De Bariloche, Argentina

[4] Univ Nacl Comahue UNCo, Quintral 1250, RA-8400 San Carlos De Bariloche, Argentina

来源：

CHEMICAL ENGINEERING RESEARCH & DESIGN | 2023年 / 191卷

关键词：

Lithium; Extraction; Spodumene; KF; Fluorination; Response surface methodology; BETA-SPODUMENE; CHLORINATION;

D O I：

10.1016/j.cherd.2023.01.042

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

New developments in energy storage technologies have positioned lithium as a critical energy element worldwide. For this reason, it is relevant to investigate new processes that exploit Li resources comprehensively and efficiently. This work describes a simple methodology for Li extraction by solid-solid reaction between alpha-spodumene and KF and subsequent leaching. The operational parameters investigated were: temperature, calci-nation time, and amount of fluorinating agent. The process efficiency was analyzed through Design of Experiments (DOE) and Artificial Neural Networks (ANN) to obtain a predictive model of the system. Optimal Li extraction of 94% was achieved at 779 degrees C, 43 min, with a KF/spodumene ratio of 0.56 w/w.(c) 2023 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved.

引用

页码：319 / 324

页数：6

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