Lead smelting and desulfurization

A new desulfation process of spent lead paste via cyclic utilization

2022年5月15日  The predesulfation process uses carbonate and other desulfurizers to desulfate and obtain lead carbonate or lead oxide from lead paste before the smelting process, greatly reducing the smelting temperature (850–900 C) and SO 2 emissions (Li et al, 2020; Ma et al, To address this problem, we designed a new desulfurization process of damped A new predesulphurization 2020年4月29日  In this study, we propose a facile route for the recovery of lead from spent lead paste by predesulfurization followed by lowtemperature reduction smelting The effects of Recovery of Lead from Spent Lead Paste by Predesulfurization 2022年1月1日  In summary, the NaCa double alkali predesulfurization process can successfully recover lead from spent lead paste in an environmentally sustainable manner, minimize the Analysis of a more sustainable method for recycling waste lead

Pyrometallurgical Processing of Secondary Lead

2018年1月19日  Advances in lead smelting technologies heavily relies on feed preparation and smelting conditions optimization One of the most significant improvement is desulfurization The battery paste, mainly composed of lead 2016年3月1日  To address this problem, we designed a new desulfurization process of damped lead battery paste with sodium carbonate that can convert the vast majority of lead sulfate to A new predesulphurization process of damped lead battery paste 2013年7月19日  Here we demonstrate a new green hydrometallurgical process to recover lead based on a hydrogenlead oxide fuel cell Highpurity lead, along with electricity, is produced with only water asA green lead hydrometallurgical process based on a Lead and antimony can both be reduced by iron: Any lessnoble impurities will slag out, but because the change in free energy about 900°C is only slightly negative, substantial lead A REVIEW OF SLAG CHEMISTRY IN LEAD RECYCLING

Recovery of Lead from Spent Lead Paste by Predesulfurization

2020年4月29日  In this study, we propose a facile route for the recovery of lead from spent lead paste by predesulfurization followed by lowtemperature reduction smelting The effects of two2020年1月25日  The world’s largest lead smelting plant using oxygen bottom blowing (SKS) lead smelting technology under construction is introduced in the paper The most advanced The Latest Development of Oxygen Bottom Blowing Lead Smelting 2024年5月28日  Here, a sustainable molten nitrate salt mediated approach was proposed to realize lowtemperature (500 °C) direct roasting of waste lead paste Efficient desulfurization Molten salt mediated lowtemperature direct roasting of spent 2012年2月3日  The production of primary lead is a process of extracting lead from lead sulfide concentrate by smelting Smelting process mainly includes sinter plant–blast furnace route and direct smelting reduction process as shown in Figs 2 and 3, including oxidation, reduction, and refining (Sohn and OlivasMartinez, 2014)In sinter plant–blast furnace route, PbS is oxidized Lead Smelting an overview ScienceDirect Topics

Analysis of a more sustainable method for recycling waste lead

2022年1月1日  Predesulfurization technology is the key to the entire process It uses a desulfurizer to convert highmelting point lead sulfate into lowmelting point lead compounds, which effectively reduces SO 2 emissions and smelting energy consumption (Fu, 2007, Li, 2011)At present, desulfurizers used for lead paste predesulfurization include NaOH, Na 2 CO 2022年8月4日  The incorporation of lead into most consumer items such as gasoline, paints, and welding materials is generally prohibited However, lead–acid batteries (LABs) have become popular and have emerged as a major area where lead is utilized Appropriate recycling technologies and the safe disposal of LABs (which contain approximately 65% lead) and lead Progress in Waste Lead Paste Recycling Technology from Spent Lead 2023年6月7日  It is an oxygenenriched direct lead smelting technology in lead smelting Two processes, ie, rapid desulfurization by a high oxygen potential in the reaction shaft and rapid reduction by a low oxygen potential in the bath, are realized in one furnace bodyLead Flash Smelting Process SpringerLink126 Primary Lead Smelting 1261 General15 Lead is found naturally as a sulfide ore containing small amounts of copper, iron, zinc, precious metals, and other trace elements The lead in this ore, typically after being concentrated at or near the mine (see Section 1218), is processed into metallurgical lead at 4 facilities in the U S126 Primary Lead Smelting US EPA

Cotreatment of MSWI Fly Ash and Granulated Lead Smelting Slag

2019年1月8日  The amount of municipal solid waste (MSW) produced in China was approximately 203 million tons in 2016 []Due to the large quantity of MSW generated annually and the shortage of landfill disposal, incineration technology is 2020年2月15日  Finally, metallic lead, with a purity of 99978%, was obtained from the singlephase lead paste by a lowtemperature reduction smelting process with starch as the reductant under the conditions of Na 2 O/B 2 O 3 = 1/2, PbO/B 2 O 3 = 5/1, starch/PbO = 1/75, smelting temperature 700 °C, and smelting duration 90 min, and the lead recovery is high up to 9553%An environmentfriendly process of lead recovery from spent lead 2024年9月13日  Spent lead paste (SLP) obtained from endoflife leadacid batteries is regarded as an essential secondary lead resource Recycling lead from spent leadacid batteries has been demonstrated to be of paramount significance for both economic expansion and environmental preservation Pyrometallurgical and hydrometallurgical approaches are proposed to recover Emerging Electrochemical Techniques for Recycling Spent Lead 2024年1月1日  It is an oxygenenriched direct lead smelting technology in lead smelting Two processes, ie, rapid desulfurization by a high oxygen potential in the reaction shaft and rapid reduction by a low oxygen potential in the bath, are realized in one furnace bodyLead Flash Smelting Process SpringerLink

An Innovative OxygenEnriched Flash Smelting Technology for Lead

Oxygenenriched strengthening smelting is the main characteristics of the modern bath smelting for lead smelting Interactions at high temperature between lead sulfide and lead oxide are the key reactions of metallic lead generation It is extremely difficult to synchronously achieve incompatible desulfurization and leadSemantic Scholar extracted view of "Recovery of lead from lead paste in spent lead acid battery by hydrometallurgical desulfurization and vacuum thermal reduction" which could avoid both the smelting and electrowinning route has been developed and the results showed that the desulphurization efficiency of lead paste was up to 999%Recovery of lead from lead paste in spent lead acid battery by 2024年1月12日  Innovation and performance of lead smelting slagbased multisolid waste pavement concrete materials: Ratio design, mechanical properties, hydration ] generated by ferrous metallurgy, lead smelting slag (LSS) [6] and copper slag [7] produced via nonferrous metallurgy, and desulfurization gypsum (DG) [8] originating from the Innovation and performance of lead smelting slagbased multi 2016年3月1日  These methods combine the advantages of hydrometallurgical and pyrometallurgical processes Lead sulfate from the lead paste is first transformed into lead carbonate by reacting with Na 2 CO 3, (NH 4) 2 CO 3, or K 2 CO 3, among other species Next, the insoluble sludge or filter cake from filtration unit is charged into smelting furnacesA new predesulphurization process of damped lead battery

Research on process modeling and simulation of spent lead paste

2023年8月1日  In the reaction process of carbonate desulfurization lead paste, the produced PbCO 3 is easily wrapped in the outer periphery of PbSO 4 to form a product layer, hindering the mass transfer process Therefore, it is necessary to break the PbCO 3 product layer In this work, the rotor statorreinforced reactor was selected as the enhanced desulfurization reactor for the 2015年4月12日  The recovery of iron from iron sinking slag and lead smelter slag was investigated by desulfurizationreduction bath smelting The effects of lead smelter slag (LSS) to iron sinking slag (ISS) mass ratio and temperature were investigated in desulfurization experiments The Xray diffraction (XRD) and Xray fluorescence (XRF) analyses show that Recovery of iron from leadzinc metallurgical slags by bath smelting A lead paste desulfurization method based on a grinding mechanism comprises: Lead plaster smelting process based on oxygenenriched side blowing Also Published As Publication number Publication date; CNA (en) : Similar Documents PublicationWOA1 Lead paste desulfurization methodDesulfurization rate of oxidation furnace reached 995% The coalrateofreductionreached86%Thefurnacelifeisupto5yearsLeadandzinc Recovery are over 97% and 92%, respectively Keywords Lead smelting Oxygenenriched air side blown Oxidation reduction Fuming Leadbearing polymetallic materials exist mainly as metal oxides and The Process and Application of OxygenEnriched Air Side Blown Smelting

Recovery of Lead from Spent Lead Paste by Predesulfurization

2020年4月29日  The treatment of spent lead paste is essential for the recycling of spent leadacid batteries In this study, we propose a facile route for the recovery of lead from spent lead paste by predesulfurization followed by lowtemperature reduction smelting The effects of two desulfurization methods, ie, highpressure and normalpressure processes, on the 2009年5月1日  For current inprocessing practices and technologies in the US and abroad, we consulted the environmental databases of Academic Premier and Environetbase and general search engines such as Google and Yahoo with combinations of the following keywords: secondary lead smelting, smelting technologies, lead recycling technologies, and Evidencebased integrated environmental solutions for secondary lead 126 Primary Lead Smelting 1261 General15 Lead is found naturally as a sulfide ore containing small amounts of copper, iron, zinc, precious metals, and other trace elements The lead in this ore, typically after being concentrated at or near the mine (see Section 1218), is processed into metallurgical lead at 4 facilities in the U S126 Primary Lead Smelting US Environmental Protection Agency2020年11月1日  Finally, metallic lead, with a purity of 99978%, was obtained from the singlephase lead paste by a lowtemperature reduction smelting process with starch as the reductant under the conditions of Hydrothermal desulfurization of spent lead paste based on

Integrated assessment of process pollution prevention and endof

2017年2月1日  In this study, three main practices for secondary lead smelting are investigated and they are denoted as “Mixing smelting process” “Predesulfurization smelting process” and “Hydrometallurgical process”, respectively, according to 2020年1月25日  The process flow diagram for processing of leadbearing polymetallic materials by oxygenenriched side blown oxidation, oxygenenriched side blown reduction and fuming with fuming furnace is shown in Fig 2After proportioning, the leadbearing polymetallic materials are mixed and granulated, with input charge particle size of around 15 mm, water controlled within The Process and Application of OxygenEnriched Air Side Blown Smelting 2019年5月16日  An innovative and environmentally friendly leadacid battery paste recycling method is proposed The reductive sulfurfixing recycling technique was used to simultaneously extract lead and immobilize sulfur SO2 emissions and pollution were significantly eliminated In this work, the detailed lead extraction and sulfurfixing mechanisms in the PbSO4Fe3O4 Spent LeadAcid Battery Recycling via Reductive SulfurFixing Smelting 2023年12月1日  Trans Nonferrous Met Soc China 33(2023) 3847−3859 Synergistic recovery of copper, lead and zinc via sulfurization−reduction method from copper smelting slag Qinghua TIAN*, Zhongchen LI*, Qinmeng WANG, Xueyi GUO School of Metallurgy and Environment, Central South University, Changsha , China Received 17 August 2022; accepted 4 Synergistic recovery of copper, lead and zinc via sulfurization

Analysis of a more sustainable method for recycling waste lead

2022年1月1日  Predesulfurization technology is the key to the entire process It uses a desulfurizer to convert highmelting point lead sulfate into lowmelting point lead compounds, which effectively reduces SO 2 emissions and smelting energy consumption (Fu, 2007, Li, 2011) At present, desulfurizers used for lead paste predesulfurization include NaOH, Na 2 CO 3, Typical practices in secondary lead smelting operations involve drying units at the preprocessing stage and to a lesser extent both drying and Drying of lead scrap extracted from hydroseparation U4 – Desulfurization of battery paste for lead extraction U5 – Hydrometallurgical processing of slag, battery paste and sludge A1 Evidencebased integrated environmental solutions for secondary lead from primary lead smelting and refining Chapter 3 is a review of emissions data collection and analysis procedures It describes the desulfurization, is filtered out and recycled through the sinter; the remaining sinter roast is crushed before being transported to the blast furnaceBACKGROUND REPORT PRIMARY LEAD SMELTING AND Newer secondary recovery plants use lead paste desulfurization to reduce sulfur dioxide emissions and generation of waste sludge during smelting Battery paste containing lead sulfate and lead oxide is desulfurized with soda ash, yielding marketgrade sodium sulfate as a byproduct The desulfurized paste is processed inLead and Zinc Smelting International Finance Corporation

Sulfur dioxide removal: An overview of regenerative flue gas

2020年5月16日  Numerous mitigation techniques have been incorporated to capture or remove SO2 with flue gas desulfurization (FGD) being the most common method Regenerative FGD method is advantageous over other methods due to high desulfurization efficiency, sorbent regenerability, and reduction in waste handling The capital costs of regenerative methods are 2012年2月3日  The production of primary lead is a process of extracting lead from lead sulfide concentrate by smelting Smelting process mainly includes sinter plant–blast furnace route and direct smelting reduction process as shown in Figs 2 and 3, including oxidation, reduction, and refining (Sohn and OlivasMartinez, 2014)In sinter plant–blast furnace route, PbS is oxidized Lead Smelting an overview ScienceDirect Topics2022年1月1日  Predesulfurization technology is the key to the entire process It uses a desulfurizer to convert highmelting point lead sulfate into lowmelting point lead compounds, which effectively reduces SO 2 emissions and smelting energy consumption (Fu, 2007, Li, 2011)At present, desulfurizers used for lead paste predesulfurization include NaOH, Na 2 CO Analysis of a more sustainable method for recycling waste lead 2022年8月4日  The incorporation of lead into most consumer items such as gasoline, paints, and welding materials is generally prohibited However, lead–acid batteries (LABs) have become popular and have emerged as a major area where lead is utilized Appropriate recycling technologies and the safe disposal of LABs (which contain approximately 65% lead) and lead Progress in Waste Lead Paste Recycling Technology from Spent Lead

Lead Flash Smelting Process SpringerLink

2023年6月7日  It is an oxygenenriched direct lead smelting technology in lead smelting Two processes, ie, rapid desulfurization by a high oxygen potential in the reaction shaft and rapid reduction by a low oxygen potential in the bath, are realized in one furnace body126 Primary Lead Smelting 1261 General15 Lead is found naturally as a sulfide ore containing small amounts of copper, iron, zinc, precious metals, and other trace elements The lead in this ore, typically after being concentrated at or near the mine (see Section 1218), is processed into metallurgical lead at 4 facilities in the U S126 Primary Lead Smelting US EPA2019年1月8日  The amount of municipal solid waste (MSW) produced in China was approximately 203 million tons in 2016 []Due to the large quantity of MSW generated annually and the shortage of landfill disposal, incineration technology is Cotreatment of MSWI Fly Ash and Granulated Lead Smelting Slag 2020年2月15日  Finally, metallic lead, with a purity of 99978%, was obtained from the singlephase lead paste by a lowtemperature reduction smelting process with starch as the reductant under the conditions of Na 2 O/B 2 O 3 = 1/2, PbO/B 2 O 3 = 5/1, starch/PbO = 1/75, smelting temperature 700 °C, and smelting duration 90 min, and the lead recovery is high up to 9553%An environmentfriendly process of lead recovery from spent lead

Emerging Electrochemical Techniques for Recycling Spent Lead

2024年9月13日  Spent lead paste (SLP) obtained from endoflife leadacid batteries is regarded as an essential secondary lead resource Recycling lead from spent leadacid batteries has been demonstrated to be of paramount significance for both economic expansion and environmental preservation Pyrometallurgical and hydrometallurgical approaches are proposed to recover 2024年1月1日  It is an oxygenenriched direct lead smelting technology in lead smelting Two processes, ie, rapid desulfurization by a high oxygen potential in the reaction shaft and rapid reduction by a low oxygen potential in the bath, are realized in one furnace bodyLead Flash Smelting Process SpringerLinkOxygenenriched strengthening smelting is the main characteristics of the modern bath smelting for lead smelting Interactions at high temperature between lead sulfide and lead oxide are the key reactions of metallic lead generation It is extremely difficult to synchronously achieve incompatible desulfurization and leadAn Innovative OxygenEnriched Flash Smelting Technology for Lead

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