Narrow your search
Listing 1 - 2 of 2
Sort by

Dissertation
Optimisation of the lithium recovery in the filtrate of a lithium primary batteries recycling process
Authors: --- --- --- ---
Year: 2019 Publisher: Liège Université de Liège (ULiège)

Loading...
Export citation

Choose an application

Bookmark

Abstract

The aim of the present master's thesis is to develop and optimize a method to recover lithium in the filtrate of a lithium primary batteries recycling process. The importance of recycling lithium primary batteries lays in the fact that there is currently no process used at an industrial scale able to treat that kind of cells because of the practical and safety issues related to their nature. 

In this context and despite their small market share, Revatech decided to work on that type of batteries as they cannot be safely stored and need to be treated to minimize risks of explosion due to their high reactivity. The treatment of these cells generates three fractions: scrap metal, black-mass and a liquid concentrate of lithium. This document focuses on the liquid output.

The first step of the thesis is the documentation on already implemented batteries recycling and lithium recovery processes which can give a hint on the available methods. Since information on lithium-ions batteries are more available, the methods described in scientific literature often have to be adapted to the case of lithium primary batteries.

The recovery of lithium in this filtrate is done by selective precipitation using sodium carbonate to recover solid lithium carbonate.

The adjustment of parameters and the experiments on different types of filtrate are done to come to a recovery rate and purity as high as possible on a representative filtrate generated by the shredding of a mix of different types of lithium primary batteries. After optimization, a recovery rate of 80% and a purity of 99% are reached.

The parameters eventually used are a molar ratio Na/Li of 1.5, a volume of water to wash the precipitate equals to 50% of the volume of the initial lithium containing solution, a reaction time of 30 minutes and working at room temperature.

These parameters are initially tested on lithium hydroxide solution allowing experiments on pollutant free solutions containing only lithium before their application to a filtrate generated by the shredding of batteries.

The results are extrapolated to forecast the production possibilities related to this process. The experiments led to a potential volume of 110 m³ of filtrate to process in order to produce 7tons of lithium carbonate taking 300 tons of batteries (Revatech forecast) as an input. Further intermediate tests still have to be made but if a scale-up with the same output as the lab experiments is reached, it would be profitable for the company and could be done without transforming the current plant.


Book
New Science Based Concepts for Increased Efficiency in Battery Recycling 2020
Author:
ISBN: 3036559264 3036559256 Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

Loading...
Export citation

Choose an application

Bookmark

Abstract

Based on 19 high-quality articles, this Special Issue presents methods for further improving the currently achievable recycling rate, product quality in terms of focused elements, and approaches for the enhanced mobilization of lithium, graphite, and electrolyte components. In particular, the target of early-stage Li removal is a central point of various research approaches in the world, which has been reported, for example, under the names early-stage lithium recovery (ESLR process) with or without gaseous CO2 and supercritical CO2 leaching (COOL process). Furthermore, many more approaches are present in this Special Issue, ranging from robotic disassembly and the dismantling of Li‐ion batteries, or the optimization of various pyro‐ and hydrometallurgical as well as combined battery recycling processes for the treatment of conventional Li‐ion batteries, all the way to an evaluation of the recycling on an industrial level. In addition to the consideration of Li distribution in compounds of a Li2O-MgO-Al2O3-SiO2-CaO system, Li recovery from battery slags is also discussed. The development of suitable recycling strategies of six new battery systems, such as all-solid-state batteries, but also lithium–sulfur batteries, is also taken into account here. Some of the articles also discuss the fact that battery recycling processes do not have to produce end products such as high-purity battery materials, but that the aim should be to find an “entry point” into existing, proven large-scale industrial processes. Participants in this Special Issue originate from 18 research institutions from eight countries.

Keywords

Technology: general issues --- History of engineering & technology --- Mining technology & engineering --- lead-acid battery recycling --- pyrite cinder treatment --- lead bullion --- sulfide matte --- SO2 emissions --- pilot plant --- environmental technologies --- waste treatment --- recycling --- spent lithium-ion batteries --- recycling chain --- process stages --- unit processes --- industrial recycling technologies --- mechanical treatment --- slag cleaning --- cobalt --- nickel --- manganese --- lithium-ion battery --- circular economy --- batteries --- reuse --- disassembly --- safety --- lithium minerals --- lithium slag characterization --- thermochemical modeling --- critical raw materials --- smelting --- lithium --- graphite --- mechanical processing --- pyrometallurgy --- thermal treatment --- pyrolysis --- hydrometallurgy --- precipitation --- oxalic acid --- mixed oxalate --- battery recycling --- lithium–sulfur batteries --- metallurgical recycling --- metal recovery --- recycling efficiency --- lithium-ion batteries --- all-solid-state batteries --- slag --- leaching --- dry digestion --- fractionation --- tubular centrifuge --- rotational speed control --- particle size analysis --- lithium iron phosphate --- LFP --- carbon black --- direct battery recycling --- recovery --- thermodynamic modeling --- engineered artificial minerals (EnAM) --- melt experiments --- PXRD --- EPMA --- manganese recovery --- solvent extraction --- D2EHPA --- factorial design of experiments --- lithium-ion batteries (LIBs) --- lithium removal --- phosphorous removal --- recovery of valuable metals --- carbonation --- lithium phase transformation --- autoclave --- supercritical CO2 --- X-ray absorption near edge structure (XANES) --- powder X-ray diffraction (PXRD) --- electron probe microanalysis (EPMA) --- lithium recycling --- lithium batteries --- black mass --- LIB --- mechanical recycling processes --- battery generation --- solid state batteries --- robotic disassembly --- electric vehicle battery --- task planner --- n/a --- lithium-sulfur batteries

Listing 1 - 2 of 2
Sort by