Hydrometallurgical recovery of lead from spent lead-acid battery
The lead in paste was recovered via hydrometallurgical leaching and electrowinning in chloride solution. The leaching ratio of lead was >99% under optimum
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The lead in paste was recovered via hydrometallurgical leaching and electrowinning in chloride solution. The leaching ratio of lead was >99% under optimum
Tetrabasic lead sulfate (4BS) was used as a positive active material additive for lead-acid batteries, which affirmatively affected the performance of the battery.
The lead acid battery, which is made out of mostly recycled batteries, contains lead in the form PbO2, PbO and PbSO4. Ways to retrieve the lead from the battery pastes have been explored [166
These two oxides are important components in the spent lead-acid battery paste and together account for up to 50% of the paste by weight. PbSO4, the main component in a spent battery paste
This document discusses aspects of lead/acid battery technology, specifically related to paste mixing and formulation. It provides background on the objectives of paste mixing, including producing a homogeneous paste that can flow
(1). Desulf urization rate ¼ ½ðW 1 C 1 −W 2 C 2 Þ=ðW 1 C 1 Þ 100%: ð1Þ Where W1 is the mass of spent lead acid battery paste, C1 is the mass percentage of S of spent lead acid battery paste, W2 is the mass of desulfurized paste sample, and C2 is the mass percentage of S of desulfurized paste sample.
This study focused on the recovery of the spent lead-acid battery paste with high removal efficiency of impurities. The leaching behaviors of Pb element and impurities in desulfurization and the subsequent acid leaching process were investigated. Study on effects of complex desulfurizer on the desulfurization ratio of lead pastes from used
A closed-loop ammonium salt system for recovery of high-purity lead tetroxide product from spent lead-acid battery paste. Author links open overlay panel Mingyang Li a b, Jiakuan Yang a b c, Sha increasing the S/L ratio is beneficial to reduce the dose of ammonium acetate in the leaching procedure of spent lead paste. With the S/L ratio of
Progress in Waste Lead Paste Recycling Technology from Spent Lead–Acid Battery in China Xiaowu Jie1,2,3 · Zhichao Yao1,2,3 · Chengyan Wang1,2 · Dingfan Qiu3 · Yongqiang Chen 1,2 · Yonglu Zhang 1,2,3 · Baozhong Ma1,2 · Wei Gao 3 Received: 11 March 2022 / Accepted: 21 July 2022 / Published online: 4 August 2022
The conversion ratio of spent lead paste reached a maximum value of 99.8%. Filtrate solution contained 2.23% of dissolved lead with a recovery of lead citrate of over 97.8%. (see Table 5 – values shown for 10 g spent lead-acid battery paste). Table 5.
Leady oxide for lead/acid battery positive plates: Scope for improvement? the lead:oxygen ratio is 1:1. Ease of making battery paste makes a stiff paste which can require careful control
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 environment. The ChCl and urea were mixed at a molar ratio of 1:2 and stirred with 400 r/min at 343 K until the colorless transparent DES formed . Before use, the SLP
Lower ratio (3.21%) of lead in the filtrate to total lead is achieved by leaching with a starting S/L of 1/7, responding to a maximum recovery of lead (96.8%) as pure lead
Lead sulfate, lead oxides and lead metal are the main component of lead paste in spent lead acid battery. When lead sulf... MENU. Home; Add Document; Sign In; Create An Account; PDF Reader; Full Text; a 22.11 10 2 g cm 2 min 1 reduction rate, and a 98.13% direct recovery ratio of fine lead (99.77%) had been achieved, respectively. Ó 2015
The lead acid battery uses lead as the anode and lead dioxide as the cathode, with an acid electrolyte. The following half-cell reactions take place inside the cell during discharge: At the anode: Pb + HSO 4 – → PbSO 4 + H + + 2e – At the cathode: PbO 2 + 3H + + HSO 4 – + 2e – → PbSO 4 + 2H 2 O. Overall: Pb + PbO 2 +2H 2 SO 4 →
Experimental tests have shown that the best battery performance is obtained when the paste is prepared under the following conditions: degree of lead oxidation in the leady oxide (LO) 85%,
Hydrometallurgical recovery of lead from spent lead-acid battery paste via leaching and electrowinning in chloride solution. Author links open overlay and energy storage due to the features of large power-to-weight ratio and low cost (Kumar, 2017). Lead-acid batteries account for ~80% of the total lead consumption in the world (Worrell and
Separators are used between the positive and negative plates of a lead acid battery to prevent short circuit through physical contact, mostly through dendrites (''treeing''), but also through
A lead leaching ratio > 99% could be obtained under the optimum leaching condition of CaCl 2 He J, Liao F, Zhu R, Chen Y, Tang C, Wang Y, Jokilaakso A (2019) Novel recycling process for lead-acid battery paste without SO 2 generation—reaction mechanism and industrial pilot campaign. J Clean Prod 217:162–171. CAS Google Scholar
An environmental friendly recycling process is investigated to recover lead as leady oxide from spent lead-acid battery paste. In this study, sodium oxalate as a desulfurizer and oxalate acid as a
The data used in this study is based on the database of the SCI published by Thomson Reuters Web of Science. "Spent lead-acid battery paste OR spent lead paste OR recovery of lead-acid battery" is used as the search keywords from 1987 to 2018. Then all publications related with these themes are downloaded from the Science Citation Index.
6, 7 In the traditional pyrometallurgical process, the spent lead paste is first recovered as crude lead bullion followed by producing high-purity metallic lead (99.99% purity) with a refining
The results of kilogram-scale experiments made progress easier for obtaining the ultrafine lead oxide product (PbO and Pb) from discarded lead–acid battery paste. Keywords Discarded lead–acid battery, green recycling process, lead citrate, hydrometallurgical process, re-crystallization Received 10th August 2018, accepted 17th January 2019
Although they perform relatively poorly in categories like energy-to-weight ratio, their ability to provide high surge currents makes them one of the best performing
Leaching of spent lead acid battery paste components by sodium Lower proportion (3.9%) of lead remaining in the filtrate is achieved by leaching with a starting S/L ratio of 1/5 and 1/3,
The ratio of adding nanometer 4BS is 0%, 1% and 4% and the initial discharge specific capacities are 60 mAh g −1, added 4BS to the paste of lead-acid battery and used lead monoxide to produce the paste instead of conventional leady oxides with residual free lead. Using this technology the positive plate of the lead-acid battery could
When desulfurized by Na 2 CO 3, NaHCO 3 or (NH 4) 2 CO 3, the desulfurization rate of lead paste was over 99.0% under initial C/S ratio of 2, 35 In this process, spent lead acid battery paste was treated with aqueous citric acid solution to generate a lead citrate precursor which was separated from soluble sulfate solution
Hydrometallurgical process for recovery of spent lead-acid battery paste shows great advantages in reducing SO 2 and lead particulates emissions than traditional pyrometallurgical process.However, the hydrometallurgical process usually has drawbacks of high consumption of chemical reagents and difficulty in removing impurities (especially Fe and Ba
1. A closed-loop ammonium salt system for recovery of high-purity lead tetroxide product from spent lead-acid battery paste Mingyang Li a, b, Jiakuan Yang a, b, c, *, Sha Liang a, b, Junxiong Wang a, b, Peiyuan Zhang
The results showed that direct recovery ratio of Pb from desulfurized lead paste reached 99.29% and Sb-content in Pb-Sb alloy decreased from 46% to 0.98% under following conditions: the mass ratio of desulfurized lead paste to Pb-Sb alloy of 1.50, residual gas pressure of 30 Pa, reduction temperature of 810 °C for 50 min.
As the mainstream process for recycling waste lead-acid battery paste to produce metallic lead ingots, pyrometallurgical smelting generally suffers from disadvantages such as high energy consumption, lead vapor and sulfur dioxide emissions. As shown in Fig. S1 (a)-(b), the desulphurization ratio of the lead paste has a significant effect on
Spent lead paste (SLP) obtained from end-of-life lead-acid batteries is regarded as an essential secondary lead resource. Recycling lead from spent lead-acid batteries has
Recovery of lead from lead paste in spent lead acid battery by hydrometallurgical desulfurization and vacuum thermal reduction. Author links open overlay panel Yunjian Ma, Keqiang Qiu. Show more. a 22.11 × 10 −2 g cm −2 min −1 reduction rate, and a 98.13% direct recovery ratio of fine lead (99.77%) had been achieved, respectively.
The recovery ratio of spent lead paste and the purity of lead are both effective. Kumar et al. [14–17,88–96] have pioneered sustainable paste to paste recycling method, where the spent lead acid battery paste was directly converted into the novel lead oxide paste for the new lead-acid battery.
Under the optimized reaction conditions, i.e., vacuum thermal reduction at temperature 850°C under 20 Pa for 45 min, a 22.11×10 (-2) g cm (-2) min (-1) reduction rate,
The regenerated sodium hydroxide and the lead sulfate in the lead paste were desulfurized at a molar ratio of 2.50:1, and the desulfurization rate could reach more than 97% after 60 min of reaction. Leaching of spent lead acid battery paste components by sodium citrate and acetic acid. J. Journal of Hazardous Materials., 250-251 (2013), pp
The spent lead-acid battery is primarily composed of lead paste, waste acid electrolyte, lead alloy grid, polymer container and some other parts including connecting rods .Among them, the spent lead paste with complex compositions, mainly comprising PbSO 4, PbO 2, PbO and a small amount of lead metal, is the most difficult to deal with .
A composition and plate-making process for a lead acid battery for reducing active material shrinkage in negative battery plates. A polymer is mixed with lead oxide, water, an expander and...
The chemical composition of spent lead acid battery paste is given in Table 1. Table 1. Chemical composition of spent lead acid battery paste. Elements Pb Sb Fe Zn Bi Cu As S; Content (%) 74.62: 0.043: 0.010: 0.0007: the mass ratio of desulfurized lead paste to Pb-Sb alloy of 1.50, residual gas pressure of 30 Pa, reduction temperature of
To manufacture a lead acid battery, first, apply the negative paste composition to a grid and dry and cure the paste to form a negative battery plate. Then, assemble a positive battery plate and the negative battery plate to form a green battery. Lastly, convert the tribasic lead sulfate to sponge lead by electrochemical reduction in step 24.
The negative plates in a lead acid battery are made using a composition that includes a polymer mixed with lead oxide, water, an expander, and sulfuric acid. This forms a negative paste composition with the expander and basic lead sulfate crystals having the polymer absorbed on their surfaces. The passage describes a process for reducing active material shrinkage in these batteries.
There are four main components in spent lead acid battery: polymeric containers, lead alloy grids, waste acids and pastes. Among them, the pastes mainly comprise lead oxide (∼9%), lead dioxide (∼28%), lead sulfate (∼60%) and a small amount of lead (∼3%) (Zhu et al., 2012a).
Usually, spent lead-acid batteries are separated in lead recycling plants by dismantling and sorting into four fractions: lead paste, metallic fragments, waste acid, and plastic case (Worrell and Reuter, 2014; Zhang et al., 2019). The processing of lead paste is relatively complex because it contains refractory lead sulphate.
Conclusions A research investigation for recycling lead from lead paste in the spent lead acid battery under vacuum has been developed in this work.
ern ad; the balance is electrolyte, separators, and the case. SeparatorsSeparators are used between the positive and negative plates of a lead acid battery to prevent short circuit through physical contact, mostly thro gh dendrites ('treeing'), but also through shedding of the active material.Separators obstruct the f