A Review on Recycling of Waste Lead-Acid Batteries
Pan J. et al 2016 Preparation of high purity lead oxide from spent lead acid batteries via desulfurization and recrystallization in sodium hydroxide. Industrial & Engineering
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This paper reports a new method of direct recovery of highly pure lead oxide (PbO) from waste lead pastes and lead grids of spent lead–acid batteries via catalytic conversion, desulfurization, and recrystallization
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Desulfurization: The lead plates, which are coated with lead sulfate (a byproduct of battery operation), undergo a desulfurization process. By recycling lead-acid batteries, valuable materials like lead and plastic can be recovered and
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1. Introduction. In 2013, global annual refined lead output reached 11.12 million tons, and over 80% of which were consumed in the manufacture of lead-acid batteries (China,
Recycling of Lead Pastes from Spent Lead–Acid Batteries:
In spent lead–acid batteries, lead is primarily present as lead pastes. In lead pastes, the dominant component is lead sulfate (PbSO 4, mineral name anglesite) and lead
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In this paper, a novel approach to recover PbO from lead pastes of spent lead acid batteries by desulfurization and crystallization in sodium hydroxide (NaOH) solution after
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A new pre-desulfurization process of damped lead battery paste sodium carbonate based on “surface update” was developed, and the optimum reaction conditions
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A compatible environmental process consisted of hydrometallurgical desulfurization and vacuum thermal reduction to recycle lead was investigated in this research.
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The recovery of lead from spent lead acid battery paste (SLP) is not only related to the sustainable development of the lead industry, but also to the sustainable evolution
A new pre-desulphurization process of damped lead battery
Recycling of lead-acid batteries is an important sector of the lead-acid battery industry, and green technologies with low energy consumption and pollutant emission are in
Recovery of Lead from Spent Lead Paste by Pre-desulfurization
and human health problems. Therefore, spent lead-acid battery recycling is urgently required for the sustainable development of the lead industry.2–4 Spent lead-acid
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The invention discloses a desulfurization method for lead paste in a waste lead-acid storage battery The method comprises the steps that the waste lead-acid storage battery to be treated
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The treatment of spent lead paste is essential for the recycling of spent lead-acid batteries. In this study, we propose a facile route for the recovery of lead from spent lead paste
Recycling of Lead Pastes from Spent Lead–Acid Batteries:
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In fact, it is the process of renovating lead sulfate crystals inside the battery. After the lead-acid battery has been desulfurized, you can use it again with almost its full capacity.
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Is the desulphurization of lead paste a key process in recycling?
Conclusions The desulphurization of lead pastes is the key process in recycling of lead–acid batteries. In this study, the thermodynamic constraints for three hydrometallurgical routes of desulphurization of lead pastes are presented.
What is the metallurgical recycling process for lead-acid batteries?
In the hydrometallurgical recycling process for lead–acid batteries, there are three desulphurization processes of lead pastes with oxalate, carbonate, and alkaline solutions. The desulphurized lead products (i.e., lead oxalate, lead hydroxide, and lead carbonate) are then smelted to produce lead ingots.
How to desulfurize lead paste by regenerated alkali?
The desulfurization of lead paste by regenerated alkali was as follows: (i) desulfurization was conducted by adding waste lead paste to a beaker containing a certain volume of regenerated NaOH solution and stirred. (ii) After the desulfurization reaction was complete, filter residue and filtrate were obtained by vacuum filtration.
What is a direct desulfurizer for lead paste?
NaOH was used as the direct desulfurizer for lead paste, and lime was used to regenerate NaOH from the mother liquid at sufficient concentrations for desulfurization.
How much desulfurizer is required for sodium-calcium double alkali lead paste slurry?
Hence, based on the minimum specific gravity of industrial lead paste slurry, the concentration of desulfurizer required for sodium-calcium double alkali lead paste desulfurization was estimated to be at least 2.32 mol/L. 3.2. Mechanism of a novel process of lead paste pre-desulfurization
How to recover lead oxide from spent lead acid batteries?
A novel approach to recover lead oxide from spent lead acid batteries by desulfurization and crystallization in sodium hydroxide solution after sulfation. Resour.