Slag is an inevitable waste from secondary lead smelting process. Depending on added flux during the battery paste smelting, various types of slag can be obtained: silica slag, calcium slag and sodium slag (produced by adding Na2CO3 as flux). Al-though sodium slag contains lead (approximately 5 wt. %), soluble alkalis and decom-
Secondary alkaline lead slag (SALS), generated during lead–acid batteries recycling, is a hazardous waste due to its high reactivity, solubility, and migration of toxic …
The blocks which are produced by S/S applied slag with cement (slag ratio 25%—B25L and 50%—B50L) are classified as non-hazardous according to USEPA Method. However, the overall toxicity of blocks for B50L is classified as highly acute toxic (TU > 100 class 4). ... The lead slag from secondary lead recycling is in solid form and may be ...
(DOI: 10.37190/EPE130311) Sodium lead slag, generated during secondary lead production, is characterized as hazardous waste. The aim of the study was to investigate leaching mechanism and behaviour of lead and arsenic from sodium lead slag previously stabilized/solidified in concrete using additives: MgO, CaO, Ba(OH)2 and gypsum. The influence of selected …
Sodium lead slag, generated during secondary lead production, is characterized as hazardous waste. The aim of the study was to investigate leaching mechanism and behaviour of lead and arsenic from sodium lead slag previously stabilized/solidified in concrete using additives: MgO, CaO, Ba(OH)2 and gypsum.
This study aims to examine the influence of quickly cooled granulated copper slag (QCS) and finely ground slowly cooled broken copper slag (SCS) as basalt aggregate and cement replacement, respectively, in ultra-high performance concrete (UHPC). The UHPC mixtures and cement pastes having a water-to-binder ratio of 0.18 were produced with …
100−350 kg of Pb secondary slag being produced for every tonne of metallic lead (Pan et al., 2019; Zhang et al., 2016). e cont ents of oxides in both primary and secondary Pb slags exhibit signi ...
The chemical compositions (Table 1) of OPC, slag powder, and calcined red sandstone were analyzed by XRF.Fig. 1 demonstrates the utilization of XRD for determining the mineral composition of cement, slag, and calcined red sandstone. Notably, the SiO 2 peak of the calcined red sandstone was observable. A Malvern Mastersizer 2000 analyzer was employed …
According to NEN 7375 test, different release rates of components during test period could indicate the predominant leaching mechanism from matrices: dissolution, diffusion controlled
Secondary lead slag, a waste product from battery smelting using CaCO 3 as flux, has been investigated for its use as an admixture and/or aggregate in the production of concrete blocks. The slag was added as partial replacements of cement and/or aggregate. The results revealed that the oxide components of the slag were similar to those of ordinary Portland …
CO 2-mixing by directly injecting CO 2 into fresh cement-based materials is a burgeoning technology to produce low-carbon cement products. The objective of this study is to investigate the influence of the calcium carbide slag (CCS) content on the properties and carbon sequestration efficiency of cement pastes mixed under direct CO 2 injection conditions.
Secondary alkaline lead slag is a hazardous waste generated in the recycling process of lead-acid batteries that may be suitable in construction materials.
Secondary lead slag, a waste product from battery smelting using CaCO3 as flux, has been investigated for its use as an admixture and/or aggregate in the production of concrete blocks. The...
The main lead compounds in the secondary lead slag are galena (PbS) and metallic lead (Pb). To recover Pb, leaching of galena and metallic lead has been investigated by many researchers, including chloride leaching systems, acetic acid leaching systems, and HNO 3 …
Lead slag is produced by the primary and secondary lead industry. The large amount of lead slag discharge causes environmental problems. Reducing the toxicity and increasing utilization of lead ...
By varying the percentages of lead slag, cement and GGBS concrete was casted. Compressive Strength characteristics of lead slag in concrete with varying proportions were analysed using graphs. ... Secondary alkaline lead slag is a hazardous waste generated in the recycling process of lead-acid batteries that may be suitable in construction ...
Leaching properties of secondary lead slag 153 (40 mm × 40 mm × 40 mm), after curing for 28 days, were immersed in leaching agent (distilled water, pH = 4 with HNO3), for the test period of 64 ...
Currently large-scale utilization is an effective approach to solving the problem of SS accumulation and pollution. Because of the similar mineral phase structure of steel slag and cement, it can be applied to cement building materials to prepare CSS with a certain cement replacement ratio (Chen et al., 2022).The addition of SS also provides good economic benefits …
Fig. 3. Arsenic cumulative concentration and measured pH values during 64 days of the leaching test for various systems - "Leaching properties of secondary lead slag stabilized/solidified with cement and selected additives"
Results of the TCLP and NEN 7375 tests showed that secondary lead slag could be used as a component in concrete production, but only with careful control of the …
By-products containing lead and zinc have been found to be safe for use in concrete (Atzeni et al. 1996;Cioffi et al. 2000;Morrison et al. 2003;Morrison 2005) as leaching is reduced and toxic ...
Semantic Scholar extracted view of "Preliminary Study of the Use of a Secondary Lead Smelting Slag as an Addition to Portland Cement" by J. Agredo et al. ... {Preliminary Study of the Use of a Secondary Lead Smelting Slag as an Addition to Portland Cement}, author={Janneth Torres Agredo and Sergio Gallego Restrepo and Fernando {'A}lvarez ...
This research investigates the feasibility analysis of secondary lead recycling slag powder in cementitious matrix as a construction material. Three types of secondary lead slag have been …
Secondary lead slag, a waste product from battery smelting using CaCO 3 as flux, has been investigated for its use as an admixture and/or aggregate in the production of …
Sodium lead slag, generated during secondary lead production, is characterized as hazardous waste. The aim of the study was to investigate leaching mechanism and behaviour of lead and …
12.11 Secondary Lead Processing 12.11.1 General Secondary lead smelters produce lead and lead alloys from lead-bearing scrap material. More ... In blast furnaces pretreated scrap metal, rerun slag, scrap iron, coke, recycled dross, flue dust, and limestone are used as charge materials to the furnace. The process heat needed to melt the lead is
furnace slag (BFS), for example, is one of these materials which is used in cement manufacture as blast furnace slag cement [1,2]. Secondary lead slag is a waste product of the trans-formation of lead sulfate (PbSO 4) and lead oxides (PbO and PbO 2) from expired batteries into metallic lead (Pb) using a rotary furnace. In this process, calcium ...
The lead slag generated from lead smelting and from recycling of secondary lead batteries suggest that this slag can be used as fine and coarse aggregate in the preparation of cement mortar and ...
Key words: secondary lead, slag, stabilization, solidification, leaching, TCLP Introduction Lead is one of the essential and most widely used metals in the world. From the whole lead production in Europe up to 70 % of lead is used in battery industry and scrap automotive batteries are a major source of secondary lead. Also, the secondary refining
Processing options for stabilization/solidification of secondary lead metallurgical slag into cement matrix with barium hydroxide and gypsum as selected additives due to possibility of forming …
Secondary alkaline lead slag (SALS), generated during lead–acid batteries recycling, is a hazardous waste due to its high reactivity, solubility, and migration of toxic elements.
Lead processing and smelting plants work with both primary and secondary lead. Primary lead is mined, separated from ore, and refined into various products, whereas secondary lead is recovered from used objects, such as used lead-acid batteries, for reuse in other products. Smelting is a key process in lead product production, and involves heating lead
In this work, the preliminary study about the use of secondary lead smelting slag (SLSS) as an addition to Portland cement is presented. SLSS is a waste from a Colombian secondary lead smelter. The chemical, physical and mineralogical characteristics of the raw materials were evaluated by X-ray fluorescence, particle size and X-ray diffraction.
