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The potential environmental impacts associated with the use of the spent copper slag for land reclamation were also evaluated by conducting laboratory tests including pH and Eh measurements, batch-leaching tests, acid neutralization capacity determination, and monitoring of long-term dissolution of the material. The spent copper slag was ...
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The presence of glass and skeletal/dendritic crystal shapes indicated rapid cooling of the slag melt. Copper and cobalt were found in low concentrations in the majority of silicates (olivine, clinopyroxene) and oxides, substituting for Fe in their structures (up to 7.15 wt.% CoO in olivine, 4.11 wt.% CuO in spinel).
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The only years he spent away from Anaconda was for college, and he worked a summer job shoveling slag at the smelter after graduating highschool in 1974. The slag dune wasn't the only part of the smelting waste. Toxins wafted out of the top of the massive stack, polluting the air, soil, water, and vegetation for 300 square miles.
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The aim of this study was to investigate the feasibility of regenerating spent copper slag into new abrasive materials. As regenerating is the most direct method to reclamation, once it is proven feasible and profitable, life cycle of copper slag in abrasive blast-cleaning could be prolonged and the waste production rate would be minimized.
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Copper Slag (CS) is a solid waste produced during the industrial smelting of copper (Gorai et al., 2003).The current pyrometallurgical copper smelting process is mainly through the Ausmet furnace (Fig. 1); the furnace slag goes through the flotation process to obtain copper matter, yielding a composition of CS corresponding to 30–40 % of Fe, …
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work on the Use of spent copper slag for land reclamation, they came to the conclusion the material copper slag is not likely to cause notable changes in the redox condition of the subsurface over a long period of time. In case of geotechnical and physical properties, the by-product in the copper
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This paper reviews the state-of-the-art recycling of tungsten from carbide (WC) scraps and other spent alloys generated by various production and application industries. With an aim of direct reuse or chemical recovery of tungsten, the reclamation of WC is commonly divided into three parts: (1) pyrometallurgy, (2) hydrometallurgy, and (3) …
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Copper slag is generated when copper and nickel ores are recovered from their parent ores using a pyrometallurgical process, and these ores usually contain other elements which include iron, cobalt, …
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Water characteristic curves (WCCs) of recycled materials are not well researched. In this study, the WCCs of three specimens from recycled concrete aggregate, three specimens from reclaimed asphalt pavement, and one specimen from spent copper slag are studied. The objective of this study is to obtain WCCs of the recycled materials by using the …
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spent copper slag at other facilities indicated a typical yield of 80 percent reusable product. The reclaim potential can be calculated by applying the geometric series 1 - r + r2 + . . ., where r = the percentage of reusable product. This series converges to 141 - r) for r < 1. Specifically, for coal slag where r = .65, the Figure 1
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The copper smelting process produces plenty of copper slag every year, which is a hazardous solid waste, but a secondary resource. In the present study, the extraction of copper, nickel, and cobalt from copper slag was investigated through the process of sulfation roasting–water leaching and the process of sulfation roasting–sulfate …
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The work reported in this paper is based on a laboratory study carried out to investigate the feasibility of using copper slag, a by-product of copper refineries, as a partial replacement of sand in ... Assessment of the use of spent copper slag for land reclamation. ... and is suitable to be used as a fill material for land reclamation. Expand ...
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Copper slag is a hard material produced from smelting copper-bearing ores. ... Chu, J. Assessment of the use of spent copper slag for land reclamation. Waste Manag. Res. 2006, 24, 67–73. [Google Scholar] Metzger, M.J.; Glasser, D.; Hausberger, D.; Glasser, B.J. Use of attainable region analysis to optimize particle breakage in a ball mill. ...
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Table 1: Summary of tests used for characterizing physical and geotechnical properties of spent copper slag - "Assessment of the use of spent copper slag for land reclamation"
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density of spent copper slag compared to nor mal sand has led to novel attem pts to re-use copper slag . ... it is to be used as a reclamation material (Shanmuganathan et al . 2008).
DetailsDeng, T. & Ling Y.H. (2004) Processing of copper converter slag for metals reclamation: Part II: Mineralogical study. Waste Management & Research, 22, 376—382. Google Scholar
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In terms of physical and geotechnical properties, the spent copper slag is a good fill material. In general, the spent copper slag is suitable to be used as a fill material for land reclamation ...
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In this paper, the migration transformation route and distribution ratio of fluorine during the reduction of copper slag by SCC were investigated. The results show that fluorine accounts for 57.92% of the slag phase, and the main phase is CaF2, which accounts for 41.75% of the gas phase and 0.33% of the alloy phase when reduced at 1460 °C with ...
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The copper slag sample was subjected to grinding for the generation of particles having a size finer than 74 μm. The ground slag sample was then floated at a pH of 10 using sodium carbonate as the pH modifier, in the presence of 50 g/t butyl xanthate as the collector. The flotation results indicated an enrichment in the copper content of the ...
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Although the suitability of copper slag for the production of a sintered glass-ceramic [7], brown or black inorganic pigments [8], fill materials for land reclamation [9] and unglazed floor tiles [10] was investigated, the cementitious properties and utilization of copper slag as a partial replacement for Portland cement have received the most ...
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A.S. Alnuaimi, A paper on "The Use of copper slag as a replacement for fine aggregate in reinforced concrete slender columns" in WIT Transactions on Engineering Sciences, Vol 64, 2009, pages 125-133. ... Singapore; A study on "Assessment of the use of spent copper slag for land reclamation" in Waste Management & Research Journal, …
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A. Al-Rawas R. Taha J. Nelson Thamer Beit Al-Shab Hilal Al-Siyabi. Environmental Science, Engineering. 2002. This paper looks at the effectiveness of using cement by-pass dust, copper slag, granulated blast furnace slag, and slag-cement in reducing the swelling potential and plasticity of expansive soils.…. Expand.
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Lim et al. (Lim and Chu, 2006) directly utilized spent copper slag as a fill material for land reclamation. The material displayed good physical and geotechnical properties without environmental ...
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DOI: 10.1016/J.MATPR.2020.12.481 Corpus ID: 234025526; An experimental investigation to substitute copper slag in concrete with Beas river fine aggregate @article{Nainwal2021AnEI, title={An experimental investigation to substitute copper slag in concrete with Beas river fine aggregate}, author={Ankit Nainwal and Pankaj Negi and …
DetailsThe potential environmental impacts associated with the use of the spent copper slag for land reclamation were also evaluated by conducting laboratory tests including pH and Eh measurements, batch ...
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In the past several decades, many technologies to recover platinum group metals (PGMs) and rhenium (Re) from electronic waste and spent catalysts have been developed and published. The reasons for the rising interest in this area are: (1) The abundance of these elements in the earth's crust is < 10−3 ppm (~ 6.6 × 104 tons worldwide); (2) global …
DetailsThe copper converter slag used in this study was supplied by a copper smelter located in Guangxi Province, China. The high contents of valuable metals in the slag, including 5.50 wt% Cu, 1.14 wt% Co and 0.35 wt% Sn (Table 1), indicate a recycling was warranted.'Others' in Table 1 mainly included oxygen which combined with Fe, Cu, …
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Copper slag is the main by-product of the pyrometallurgical process of copper, and more than 50 million tonnes of copper slag was generated in 2020 (Prem et al., ... copper slag, and spent cathode carbon for recovering and solidifying heavy metals. J. Hazard Mater., 417 (2021), Article 126020, 10.1016/j.jhazmat.2021.126020.
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The potential environmental impacts associated with the use of the spent copper slag for land reclamation were also evaluated by conducting laboratory tests including pH and Eh measurements, batch ...
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Lim and Chu [35] assessed the use of spent copper slag for land reclamation. Havanagi ... Copper slag in itself is a granular cohesionless sand like material while fly ash is highly pozzolanic. In ...
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Even you can make use spent copper slag. It is used as fill material for land reclamation. Copper slag is very much popular abrasive because it poses low risk to health as well as environment ...
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Table 2: Basic properties of spent copper slag compared with sand. - "Assessment of the use of spent copper slag for land reclamation"
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The lack of waste landfill used for waste disposal and the increasing cost of fill materials used for land reclamation projects in Singapore has led to the study on the suitability of using spent copper slag, a by-product of removing rust and marine deposit on ships, as the primary fill material for construction and land reclamation in ...
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Lim and Chu [35] assessed the use of spent copper slag for land reclamation. Havanagi [25, 26] reported the utilization of copper slag wastes in embankment and pavement construction.
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Steel slag reuse as a construction material is an attractive solution for the management of the industrial byproduct. However, concern exists on the release of steel slag constituents when a massive amount of the material is reused in the field. This study is aimed to improve the understanding on the leaching characteristics of iron and …
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Abstract and Figures. Copper—indium—gallium—diselenide (CIGS) is a fast-evolving commercial solar cell. The firm demand for global carbon reduction and the rise of potential environmental ...
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