Dross is a byproduct of the aluminum production process. At the present time, dross is further processed in rotary kilns to recover the aluminum, and the remaining salt cake is sent to landfills raising environmental concerns. Furthermore, much energy is consumed attempting to recover the aluminum from the dross; this energy usage can …
In this work, an innovative and carbon-free smelting reduction process is proposed to recycle valuable metals from waste copper slag using secondary aluminum dross as a reductant. Experimental and thermodynamic investigations were carried out to understand the reaction and separation process and its correlation with smelting …
Due to the excellent engineering property, aluminum has become an important material for processing industries. ... such as copper, titanium, iron, manganese, and calcium ... aluminum dross is silicon dioxide. e solubility in alkali
The results showed that aluminum dross exhibited significantly enhanced stability after the activating treatments and obtained a relatively large specific surface area and pore volume, presenting similar pore structure characteristics to aluminum oxides (Al 2 O 3). Aluminum dross can be used as an excellent catalyst carrier.
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AL Circle's updated and latest In-depth research report on Aluminium Dross Processing: A Global Review. AL Circle's launched the updated version of its 2017 report, 'Aluminium Dross Processing: A Global Review,' which serves to enhance comprehension of the aluminium dross production process, initiatives to curtail its generation, and cutting …
This research assessed the rheological properties of aluminium dross in self-compacting concrete. Aluminium dross, solid waste from the aluminium processing industry, was used as a partial…
Advanced processes, which have been introduced into the processing of aluminium dross in recent years, are based on plasma technology. The aim here is to …
Nickel slagNickel slag can be recycled as one of excellent secondary sources due to valuable iron resource. A static model of recycling nickel slagNickel slag by aluminum drossAluminum dross was established based on material balance and non-isothermal thermodynamic...
By finding appropriate recycling approaches, the volume of wastes, corresponding disposal cost, and the pollution of environment could be diminished. Also, such promising approaches can result in the conservation of natural sources and economic benefits. Aluminum (Al) dross as a hazardous solid waste in aluminum production …
In this work, an innovative and carbon-free smelting reduction process is proposed to recycle valuable metals from waste copper slag using secondary aluminum dross as a reductant.
The aluminum recovery from white aluminum dross by a mechanical treatment and sizing followed by remelting process was investigated. The dross was subjected to a ball mill, and the obtained particles were sized in different ranges. They were studied by advanced materials characterization techniques. It was found that the larger …
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Aluminum dross (AD) from aluminum alloy production is harmful for the environment, while it also contains valuable metal and oxides. Therefore, its comprehensive utilization in an environmental-friendly route is of great importance for the sustainable development of the aluminum industry. Therefore, a green route to comprehensively …
Dross is a material, which forms on the surface of molten non-ferrous metal, such as aluminum or zinc, during melting, metal holding and handling operations when …
The objective of this review is to critically evaluate important aspects of aluminium dross generation, classification, properties, applications, and its commercial recycling techniques. A by-product of aluminium industry, aluminium dross is recycled by pyrometallurgy, hydrometallurgy, and hydrothermal processes, leading to aluminium …
Dross, a product/byproduct of slag generated in aluminum metal production process is normally comprised of these two oxides in addition to aluminum nitride (AlN). Worldwide, thousands of tons of aluminum dross are generated as industrial wastes and are disposed of in landfills causing serious environmental hazard.
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Both the above studies verified the excellent performance of secondary aluminum dross in molten steel desulfurization. The theoretical reason for that advantage happens to
In-plant aluminum dross recovery has been a successful reality for more than five years, with most of the emphasis on small volumes of dross. Opportunities for larger volumes are now opening, with units offered in …
In construction applications, dross serves a unique purpose by Providing greater strength, thermal insulation and less water absorption increased the desirability of materials in this …
Download Citation | On Mar 14, 2019, Jiaying Sun and others published Performance of New Non-Clinker Aluminum Dross Cement Curing Agent | Find, read and cite all the research you need on ResearchGate
Keywords Aluminum dross · Hydro metallurgy · Pyro metallurgy · Leaching · Renewable energy · Recovery and recycling Introduction Dross is a byproduct resulting from the aluminum (Al) melt-ing process, primarily formed due to airborne impurities and
The content of metallic Al in aluminum dross is 33.14 wt%, and the lower contents of F, K, and Cl (~0.14%) can be ignored due to the process conditions without soluble-salt addition, which indicates that aluminum dross can be used as the reductant in slag treatment [11]. Table 1 Chemical compositions of nickel slag and aluminum dross (wt%)
Highlights • This review presents various issues on aluminum dross as a hazardous waste. • Adverse effects of aluminum dross on public health and …
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This applies at least for dross from pure aluminum metal production. For dross generated from aluminum alloys, the situation might be different. Some elements in a dross might indeed affect the performance of the electrolysis cells in a negative ways.
Apart from the solid products, gases like H 2, NH 3 and CH 4 are produced by recycling dross when the Al-water reaction takes place in the presence of acids or …
primary aluminum dross (PAD) and secondary aluminum dross (SAD) according to different sources [2, 3]. PAD comes from the process of producing primary aluminum by electrolysis of alumina, which contains 15%−75% of metallic aluminum and has high aluminum recovery value [4]. SAD is generated by remelting PAD or other aluminum …
In-plant aluminum dross recovery has been available for some time, but isn't widely used for small volumes of dross. Crucible melting furnaces typically generate 5-25 lb of dross, and most recovery equipment has been considered too cumbersome to move from furnace to furnace.
Aluminum dross, as a hazardous waste product, causes harm to the environment and humans, since the AlN it contains chemically reacts with water to produce ammonia. In the present study, a formula for modifying the AlN content in aluminum dross is proposed for the first time, by investigating the components of aluminum dross and …
generated in the casthouses by the aluminum producers and remelters and sent to the Aluminum dross recycling plant where it is mixed with salt and fed into gas fired rotary furnaces. The salt helps breaking the oxide layer around the aluminium metal and prevent further oxidation. The metal is then returned to the dross producer or sold to ...
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The disposal of secondary aluminum dross is also a focus problem because it is difficult to further extract aluminum from this type of waste. 18. The chemical composition of secondary aluminum dross indicates that it may be an excellent reductant for iron and copper oxides in copper slag.