An Emission-Free Vacuum Chlorinating Process for Simultaneous Sulfur Fixation and Lead Recovery from Spent Lead-Acid Batteries

2018 ◽  
Vol 52 (4) ◽  
pp. 2235-2241 ◽  
Author(s):  
Kang Liu ◽  
Jiakuan Yang ◽  
Sha Liang ◽  
Huijie Hou ◽  
Ye Chen ◽  
...  
Keyword(s):  
Lead Acid Batteries ◽  
Lead Recovery ◽  
Sulfur Fixation ◽  
Lead Acid

Lead recovery from spent lead acid battery paste by hydrometallurgical conversion and thermal degradation

2019 ◽  
Vol 38 (3) ◽  
pp. 263-270
Author(s):  
Wenke Liu ◽  
Qingwei Qin ◽  
Dengqi Li ◽  
Guangqiang Li ◽  
Yinjie Cen ◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Lead Oxide ◽  
Lead Dioxide ◽  
Scanning Calorimetry ◽  
Lead Carbonate ◽  
Lead Acid Batteries ◽  
Novel Approach ◽  
Lead Recovery ◽  
Main Component ◽  
Lead Acid

Spent lead paste is the main component in lead-acid batteries reaching end of life. It contains about 55% lead sulphate and 35% lead dioxide, as well as minor amounts of lead oxide. It is necessary to recycle spent lead paste with minimal pollution and low energy consumption instead of the conventional smelting method. In this study, a novel approach involving hydrometallurgical desulphurisation and thermal degradation is developed to recover lead as PbO products from spent lead acid batteries. First, the desulphurisation effects and phase compositions of products with different transforming agents were compared, and the optimum conditions using (NH4)2CO3 as a transforming agent were determined. And then, the thermal degradation processes of both precursors lead carbonate and lead dioxide were investigated to prepare α-PbO, Pb3O4, and β-PbO products in argon and air atmospheres, respectively. Both the desulphurisation precursors and the calcination products were characterised by thermogravimetry and differential scanning calorimetry, X-ray diffraction, and scanning electron microscopy. The results showed that the lead oxide products were prepared, including α-PbO at 450°C in argon, Pb3O4 and β-PbO at 480°C and 620°C in air, respectively.

Lead recovery from a typical Brazilian sludge of exhausted lead-acid batteries using an electrohydrometallurgical process

2002 ◽  
Vol 65 (2-3) ◽  
pp. 137-144 ◽  
Author(s):  
Luiz C Ferracin ◽  
Abel E Chácon-Sanhueza ◽  
Rogério A Davoglio ◽  
Luis O Rocha ◽  
Daniele J Caffeu ◽  
...  
Keyword(s):  
Lead Acid Batteries ◽  
Lead Recovery ◽  
Lead Acid

scholarly journals Cleaner Recycling of Spent Lead-Acid Battery Paste and Co-Treatment of Pyrite Cinder via a Reductive Sulfur-Fixing Method for Valuable Metal Recovery and Sulfur Conservation

Metals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 911 ◽  
Author(s):  
Yun Li ◽  
Shenghai Yang ◽  
Pekka Taskinen ◽  
Yongming Chen ◽  
Chaobo Tang ◽  
...  
Keyword(s):  
Reaction System ◽  
Weight Percent ◽  
Processing Parameters ◽  
Lead Acid Battery ◽  
Pyrite Cinder ◽  
So2 Emissions ◽  
Lead Recovery ◽  
Scale Experiment ◽  
Sulfur Fixation ◽  
Lead Acid

This study proposes a cleaner lead-acid battery (LAB) paste and pyrite cinder (PyC) recycling method without excessive generation of SO2. PyCs were employed as sulfur-fixing reagents to conserve sulfur as condensed sulfides, which prevented SO2 emissions. In this work, the phase transformation mechanisms in a PbSO4-Na2CO3-Fe3O4-C reaction system were studied in detail. Furthermore, the co-treatment of spent LAB and PyCs was conducted to determine the optimal recycling conditions and to detect the influences of different processing parameters on lead recovery and sulfur fixation. In addition, a bench-scale experiment was carried out to confirm the feasibility and reliability of this novel process. The results reveal that the products were separated into three distinct layers: slag, ferrous matte, and crude lead. 98.3% of lead and 99% of silver in the feed materials were directly enriched in crude lead. Crude lead with purity of more than 98 wt.% (weight percent) was obtained by a one-step extraction. Lead contents in the produced matte and slag were below 2.7 wt.% and 0.6 wt.%, respectively. At the same time, 99.2% total sulfur was fixed and recovered.

scholarly journals Positive synergistic effect of the reuse and the treatment of hazardous waste on pyrometallurgical process of lead recovery from waste lead-acid batteries

2014 ◽  
Vol 20 (3) ◽  
pp. 171-182 ◽  
Author(s):  
Marija Štulović ◽  
Aleksandar Mihajlović ◽  
Zoran Anđić ◽  
Marija Korać ◽  
Željko Kamberović
Keyword(s):  
Hazardous Waste ◽  
Reducing Agents ◽  
Phosphorus Compounds ◽  
Smelting Process ◽  
Pyrometallurgical Process ◽  
Lead Acid Batteries ◽  
Useful Components ◽  
Lead Recovery ◽  
Slag Reduction ◽  
Lead Acid

Modification and optimization of the pyrometallurgical process of lead recovering from the waste lead-acid batteries have been studied in this paper. The aim of this research is to develop a cleaner production in the field of the secondary lead metallurgy. Lead smelting process with the addition of flux (sodium(I)-carbonate) and reducing agents (coke, iron) has been followed. The modified smelting process with the addition of hazardous waste (activated carbon) as alternative reducing agents has shown positive results on the quality of the secondary lead, the generated slag and the process gases. Filtration efficiency of the gases, the return of baghouse dust to the process and use of oxygen burners have positive effect on the environment protection and energy efficiency. Optimization of the recycling process has been based on the properties of the slag. Stabilization of slag is proposed in the furnace with addition of waste dust from the recycling of cathode ray tube (CRT) monitors. Phosphorus compounds from dust reduce leachability of toxic elements from the generated slag. Reduction the slag amount and its hazardous character through the elimination of migratory heavy metals and valorization of useful components have been proposed in the patented innovative device - cylindrical rotating washer/separator.

A new process of lead recovery from waste lead-acid batteries by electrolysis of alkaline lead oxide solution

2012 ◽  
Vol 19 ◽  
pp. 70-72 ◽  
Author(s):  
Junqing Pan ◽  
Chao Zhang ◽  
Yanzhi Sun ◽  
Zihao Wang ◽  
Yusheng Yang
Keyword(s):  
Lead Oxide ◽  
Lead Acid Batteries ◽  
Lead Recovery ◽  
New Process ◽  
Lead Acid

Starter lead-acid batteries

1990 ◽  
Vol 78 ◽  
pp. 31-34
Author(s):  
Claude Pascon
Keyword(s):  
Lead Acid Batteries ◽  
Lead Acid
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