lead paste desulfurization

Lead Paste Sodium Carbonate/ Ammonium Bicarbonate ...

Lead Paste Sodium Carbonate/ Ammonium Bicarbonate ...

Recovery of lead from lead paste in spent lead acid battery by hydrometallurgical desulfurization and vacuum thermal reduction. Lead sulfate, lead oxides and lead metal are the main component of lead paste in spent lead acid battery. This system is connected with the waste lead-acid battery breaking and separation system, established after lead paste pump out from paste storage tank. System function: when paste pumped into the pre-desulfurization tank, adds sodium carbonate to conduct desulfurization reaction, and the stirring sufficiently. Hunan Jiangye Electromechanical Science and Technology Corp. was established on ...

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Past, present and future of lead battery recycling

Past, present and future of lead battery recycling

The present invention relates to a desulfurization process of pastel and grids of lead accumulators comprising a carbonation in two steps, a granulometric separation between the two steps followed by specific desulfurization of the large part, a desodification obtaining the conversion of the PbSO 4 contained in the pastel into PbCO 3 which can be easily converted into metallic Pb in an oven by ... Paste desulfurization This approach consists in a pre-treatment of the Lead paste to transform Lead sulfate in Lead carbonate and corresponds today to the best available technology for the lower ...

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Recovery of Lead from Spent Lead Paste by Pre ...

Recovery of Lead from Spent Lead Paste by Pre ...

Paste desulfurization This approach consists in a pre-treatment of the Lead paste to transform Lead sulfate in Lead carbonate and corresponds today to the best available technology for the lower criticality. The Lead paste is suspended in water to form slurry and then treated with Sodium carbonate. The reaction products, other than (besides) Lead  · We claim: 1. A desulfurization process of a pastel and/or grids contained in lead accumulators characterized in that it comprises a desulfurization in two phases, wherein, in the first phase the lead sulfate of the pastel is put in contact with Na 2 CO 3 in solution to react according to the following reaction: 3 PbSO 4 +3 Na 2 CO 3 +H 2 O→Pb 3 (CO 3) 2 (OH) 2 +3 Na 2 SO 4 +CO 2 (I) 2 …

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Lead and Lead Alloys – The Lead Battery Recycling

Lead and Lead Alloys – The Lead Battery Recycling

 · The desulfurization rate of lead paste was about 96.69%. This result is satisfactory in respect of desulfurization processing of the paste in previous literatures (96–99%) (Zhu et al., 2012a, Zhu et al., 2012b, Arai and Toguri, 1984, Gong et al., 1992). The invention discloses a lead paste desulfurization method based on a grinding mechanism and belongs to the field of regeneration of waste lead-acid storage batteries. The method is a process of converting lead sulfate in lead paste slurry into sulfur-free lead sediment such as lead carbonate by virtue of a desulfurizing agent in a reactor having a grinding function, so that the sulfur ...

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CN106521180A - Lead paste desulfurization method using ...

CN106521180A - Lead paste desulfurization method using ...

Hydrometallurgical desulfurization of lead paste Fig. 5 presents the XRD pattern of desulfurized paste product. It was found that NaPb2(CO3)2OH and PbO2 were the main phases, which indicated that PbSO4 had been converted by CO2 into 3 NaPb2(CO3)2OH, which could be verified by the literatures (Arai and Toguri, 1984; Gong et al., 1992). The invention discloses a lead paste desulfurization method using ammonium bicarbonate as the desulfurizing agent. The method includes: adding water or an ammonium sulfate solution into a desulfurization tank loaded with lead paste to prepare a slurry with a solid content of 30-70%, adding ammonium bicarbonate into the desulfurization tank in batches, controlling the concentration of …

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(PDF) Electrolytic desulfurization of lead-acid battery pastes

(PDF) Electrolytic desulfurization of lead-acid battery pastes

Request PDF | Recovery of high purity lead from spent lead paste via direct electrolysis and process evaluation | A facile zero-emission electrochemical direct electrolysis strategy combining with ... PDF | On , Guldem Kartal Şireli and others published Electrolytic desulfurization of lead-acid battery pastes | Find, read and cite all the research you need on ResearchGate

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Lead Paste desulphurization | Ecowair

Lead Paste desulphurization | Ecowair

Lead Paste Sodium Carbonate/ Ammonium Bicarbonate Desulfurization Device Of Lead Battery Recycling , Find Complete Details about Lead Paste Sodium Carbonate/ Ammonium Bicarbonate Desulfurization Device Of Lead Battery Recycling,Desulfurization Device Of Lead Battery Recycling In High Quality,Lead Paste Sodium Carbonate/ Ammonium Bicarbonate Desulphurization Device,Lead … Lead Paste desulphurization ECO DESULPHURIZATION PLANT. The content of Sulphuric acid in the paste is considered a matter of pollution in itself and become more dangerous while the paste is put in the furnace to produce pure lead. During this phase the furnace release gases that are …

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Comparative analysis of two processes for desulphurization ...

Comparative analysis of two processes for desulphurization ...

lead paste with reduced sulfur content and the sodium sulfate solution. The ... Desulfurization of battery paste by sodium method The sodium method is commonly known and used method in the world for desulfurization of battery paste to less than 1%. Lead Paste Sodium Carbonate/ Ammonium Carbonate Desulfurization Device Of Lead Battery Recycling , Find Complete Details about Lead Paste Sodium Carbonate/ Ammonium Carbonate Desulfurization Device Of Lead Battery Recycling,Desulfurization Device Of Lead Battery Recycling In High Quality,Lead Paste Sodium Carbonate/ Ammonium Carbonate Desulphurization Device,Lead …

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China Factory Supply Lead Paste Pre-desulfurization Tank ...

China Factory Supply Lead Paste Pre-desulfurization Tank ...

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 by pre-desulfurization followed by low-temperature reduction smelting. The effects of two desulfurization methods, i.e., high-pressure and normal-pressure processes, on the desulfurization efficiency of spent lead ... A new pre-desulfurization process of damped lead battery paste sodium carbonate based on “surface update” was developed, and the optimum reaction conditions were investigated. According to the experimental results, the process can maintain the sulfur content of lead paste under 0.5% at the optimum reaction conditions: pH = 8–10 and a molar ratio of Na 2 CO 3 to PbSO 4 of 1.00–1.10:1.

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Past present future lead battery recycling by STC Lead ...

Past present future lead battery recycling by STC Lead ...

A lead paste desulfurization method based on a grinding mechanism comprises: fully stirring lead paste slurry and a desulfurization agent in a stirring tank, pumping the slurry in the stirring tank and enabling the slurry to flow through a grinding and desulfurization apparatus for a desulfurization reaction, and enabling the slurry to be circulated between the stirring tank and the grinding ... Request PDF | Recovery of Lead from Spent Lead Paste by Pre-desulfurization and Low-Temperature Reduction Smelting | The treatment of spent lead paste is essential for the recycling of spent lead ...

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Recycling and management of waste lead-acid batteries: A ...

Recycling and management of waste lead-acid batteries: A ...

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 processes in sequence. On the basis of the analytical results of lead (Pb) and lead dioxide (PbO2) contents in the scrap lead paste, a certain amount of waste lead grid was used ... The hydrometallurgical desulphurization of lead battery paste is a chemical reaction at low temperatures (40-50 °C) by means of the lead sulfate (PbSO4) contained in the paste that is converted into lead carbonate (PbCO3), according to the following reaction:. PbSO4 + Na2CO3 → PbCO3 + Na2SO4. The desulphurization of lead battery paste, integrated into the traditional pyro-metallurgical ...

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PB BATTERY RECYCLING. NEW FRONTIERS IN PASTE ...

PB BATTERY RECYCLING. NEW FRONTIERS IN PASTE ...

 · Finally, lead citrate was calcined at low-temperature to obtain ultra-fine lead oxide. The desulfurized paste, lead citrate and the recovered lead oxide were characterized by XRD. 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 °C, and slurry ...  · Because lead is toxic to the environment and to humans, recycling and management of waste lead-acid batteries has become a significant challenge and is capturing much public attention. Various innovations have been recently proposed to recycle lead and lead-containing compounds from waste lead-acid batteries.

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Lead paste pre-desulphurization systemHunan Jiangye ...

Lead paste pre-desulphurization systemHunan Jiangye ...

Lead Paste Sodium Carbonate Desulfurization Technology Of Lead Battery Recycling , Find Complete Details about Lead Paste Sodium Carbonate Desulfurization Technology Of Lead Battery Recycling,Desulfurization Device Of Lead Battery Recycling In High Quality,Lead Paste Sodium Carbonate/ Ammonium Bicarbonate Desulphurization Device,Lead Battery Recycling from Other … China Factory Supply Lead Paste Pre-desulfurization Tank/ Device/tower In High Quanlity , Find Complete Details about China Factory Supply Lead Paste Pre-desulfurization Tank/ Device/tower In High Quanlity,Pre-desulfurization Device In High Quanlity,Lead Paste Pre-desulphurization Device,Lead Paste Predesulfurization Tower from Other Metal & Metallurgy Machinery Supplier or …

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Preparation of basic lead oxide from spent lead acid ...

Preparation of basic lead oxide from spent lead acid ...

Recovery of high purity lead from spent lead paste via direct electrolysis and process evaluation Preparation of lead oxoalkoxides from lead oxide Metallic lead recovery from lead-acid battery paste by urea acetate dissolution and cementation on iron Unit 300: Lead paste desulphurization. The benefit of the desulphurization of paste is the extreme diminution of SO 2 emission and the production of slag reduced down to less than 10% of produced lead. The productivity of the smelting furnace is increased due to a lower quantity of reagents and fluxes to be added to the process.

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