· Based on the statistical data, the current global average lead enrichment rate is 6 to 35 times higher than the background value [3]. Since the improper disposal of lead can lead to serious environmental and ecological
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· Moreover, elements in non-ferrous slag, such as Pb and As in copper slag , Zolotova et al. 2021) and Pb, Cd, and Zn in lead and zinc slags (Pan et al. 2019; Zhou et al. 2020), can migrate into the
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· Herein, Pb/Ca-rich lead slag (LS) was co-blended with MSWIFA to prepare MKPC for the synergistic treatment of both two solid wastes and the Pb-Cl solidification. The results showed that the resulting 15–15 (15 wt% MSWIFA and 15 wt% LS incorporation) sample achieved 25.44 MPa compressive strength, and Pb and Cl leaching toxicity was
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· The phase equilibria information on the Pb-Fe-O system is of practical importance for the improvement of the existing thermodynamic database of lead-containing slag systems (Pb-Zn-Fe-Cu-Si-Ca-Al-Mg-O). Phase equilibria of the Pb-Fe-O system have been investigated: (a) in air at temperatures between 1053 K and 1373 K (780 °C and
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· In the initial stage, soluble Pb rapidly interacts with free hydroxyl ions to form lead hydroxide insoluble substances, which may lead to retardation in the induction period [51], and the solubility of Pb(OH) 2 at 25 is 1.43 × 10 −20.
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· In lead industry, the separation of metallic lead, matte and speiss can be described using the thermodynamics of the Pb-Cu-As-S system. More generally, there is a large potential of application of
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· Abstract. For 33 years, a primary lead smelter operated in Santo Amaro (Brazil). Since the 1970s, large amounts of Pb and Cd have been widely documented in the blood and hair of people living near
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· The lead smelter slag may be regarded as an important secondary resource, since tons of the slag containing 10 to 25% Zn, 3% Pb and other minor valuable elements are discharged every year by industries. It is difficult to economically justify the recovery of valuable metals (mainly zinc) using traditional technologies. In this study,
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Abstract. Water-quenched lead slags are classified as hazardous materials because they contain a certain amount of heavy metals. In this study, coal-based direct reduction followed by magnetic separation was presented to separate Pb, Zn, and Fe from lead slag. Lead slag was mixed with coal and additive and treated in a laboratory tube furnace.
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· Conclusions. The kinetics of adsorption of lead ion on steel slag was studied on the basis of the external diffusion, intra-particle diffusion and adsorption reaction model (pseudo-first-order, pseudo-second). The results showed that the controlling step changed with experimental parameters varied. The removal efficiency of Pb 2+ increased
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· The separation of Pb, Zn, and Fe from lead slag by coal-based direct reduction was studied, and the reduction mechanism of Pb, Zn, and Fe has been discussed (Wang et al., 2017). Lead and Zinc phases in lead slag were transformed to the volatile Pb/PbO(g) and Zn(g) by carbothermic reduction, and thus were removed by volatilization
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· In general, cement-stabilized sand is used in the pavement base. Lead slag is a black granular material similar to sand; it has a high specific gravity of 3.6–3.9 g/cm 3 owing to its high content in iron oxide. The lead slag has a better granularity and grain size curve compared with sand (Buzatu et al., 2015).
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· This article presents the mineralogical and chemical characteristics of zinc and lead smelting slags, with particular reference to the slags formed during the simultaneous production of Zn and Pb by the Imperial Smelting Process. These slags, because of the presence of many metals in their composition, mainly in the form of
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:Lead SlagImmobilization of LeadXu, BoYi, YaolinIn this context, this study aims to investigate the use of LFS to immobilise lead (Pb) by curing and carbonation. The properties of LFS were studied through laboratory tests,
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· Nevertheless, the conversion of Pb(OH) 2 to Pb(OH) 3 − triggers the re-dissolution of Pb in highly alkaline settings (pH > 12). Moreover, Pb 2+ can form PbSO 4 by reacting with SO 4 2− , and it also can be incorporated into ettringite or aluminum-containing double salts such as [Pb 0.5 Al 3 (SO 4 ) 2 (OH) 6 ] to achieve the S/S of Pb.
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· In the Minier Valley (France, Aveyron), an archaeological site excavation has led to the discovery of 25 kg of lead (Pb) slag, found in a secondary position. On a macroscopic level, these slags can be classified into two distinct categories, vitreous black and porous gray. This clear visual differentiation has been previously documented at
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· Materials YM1, YM2, and YM3 are the synthetic slags prepared from pure PbO, ZnO, Fe 2 O 3, CaCO 3, and SiO 2 in air. Table 1 shows the compositions of the YM1, YM2, and YM3. These samples have approximately the same ZnO/Fe 2 O 3 /CaO/SiO 2 ratios but different PbO concentrations to cover the range of the potential industrial lead
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· In situ treatment of acidic arsenic-containing wastewater from the non-ferrous metal smelting industry has been a great challenge for cleaner production in smelters. Scorodite and iron arsenate have been proved to be good arsenic-fixing minerals; thus, we used lead slag as an iron source to remove arsenic from wastewater by forming
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· Additionally, we investigated the effects of initial Pb 2+ concentration, sulfuric acid-modified steel slag dosage, adsorption time, temperature, and pH on Pb 2+ removal. We evaluated the adsorption capacity of modified steel slag for Pb 2+ to provide insights into the adsorption mechanism.
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The adsorption properties of Pb 2+ aqueous solution were studied by means of laboratory-prepared composite particles from steel slag (called SS) and manganese slag (called MS). The effects of the mixing ratio, experimental temperature and adsorption time of the particles on Pb 2+ were investigated. The isothermal adsorption model of Pb 2+ and the
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· DOI: 10.1016/j.chemosphere.2022.136387 Corpus ID: 252198950 Immobilization of lead (Pb) using ladle furnace slag and carbon dioxide. @article{Xu2022ImmobilizationOL, title={Immobilization of lead (Pb) using ladle furnace slag and carbon dioxide.}, author={Bo
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Lead (Pb) is a naturally occurring heavy metal found in the environment and is known for its adverse impact on mankind. Ladle furnace slag (LFS) is a by-product from the steelmaking industry that has always been landfilled but is currently garnering interest for its potential applications as a construction material in civil engineering.
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Additionally, the lead slag, which is rich in silica, played a crucial role in removing and stabilizing As and Pb ions. Under alkaline conditions, silica encapsulated the As and Pb species, adhering to the surface of the Pb-As co-precipitates and forming dense, irregular, small particles with internal and external structures that impeded the efflux of As and Pb
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· Lead-zinc smelting slag (LZSS) is an industrial waste which is considered as hazardous waste due to the presence of heavy metals (Pb, Zn, Cr and Cu). These heavy metals can be leached into the
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:Lead SlagImmobilization of Lead · In these contexts, this study introduced a novel and sustainable method for immobilization of lead (Pb) by using an industrial solid waste (ladle furnace slag, LFS)
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:Publish Year:2017Iron in Lead SlagIn these contexts, this study introduced a novel and sustainable method for immobilization of lead (Pb) by using an industrial solid waste (ladle furnace slag, LFS) and a greenhouse
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· Obtaining metals from these methods is based on the reduction of metal oxides, most often using carbon (C) or carbon monoxide (CO) [8,9]. Two basic pyrometallurgical processes are used to obtain lead from lead (II) sulphide or mixed concentrates of lead sulphide and zinc sulphide: sintering/smelting (Imperial Smelt-ing
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Lead smelter slag is produced through the process of extraction of lead (Pb) from ores, and from reprocessing of recycled Pb mainly from electronic devices and car batteries. 52 Global primary production of 10.4 Mt of lead was reported in 2012, with an additional
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· Lead (Pb) and cadmium (Cd) accumulation, phenolics, carotenoids, chlorophyll, and proline contents in plant parts were assessed. Pb and Cd in plants decreased with an increase in distance.
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PbView ArticleChiral thiophosphoramide catalyzed asymmetric aryl transfer reactions for the synthesis of functional diarylmethanolsArticle · Lead in the slag occurs both as PbS and as metallic lead in the form of micro droplets (the XRD method indicated the presence of lead in metallic form). Metallic
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