enriching of iron containing slag waste of metallurgical plants
Minerals | Free Full-Text | Sequential Bioleaching of Pyritic
In this work, we proposed a method for biohydrometallurgical processing of mining (old pyritic flotation tailings) and metallurgical (slag) wastes to recover gold and other nonferrous metals. Since this processing allows the removal of toxic metals or at least decreases their content in the solids, this approach may reduce the negative …
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Treatments and Recycling of Metallurgical Slags
Slag in ironmaking and steelmaking processes has several metallurgical functions such as preventing contamination by atmosphere, providing thermal insulation, …
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Metallurgical resource recovery from waste steelmaking …
PMID: 34429031. DOI: 10.1080/09593330.2021.1968957. Abstract. Steel slag from an electric arc furnace (EAF) may contain significant amounts of oxides of valuable metals. …
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Pyrometallurgical Processing | SpringerLink
The oxygen or enriched air is blown on top of the oven with a blowpipe, producing an oxidation effect of impurities and agitating the bath and the slag in a similar way as in steel converters. What takes place inside the converter is the melting of the load, the formation of slag, pyrolysis and combustion of the polymers and the selective ...
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Environmental and Socioeconomic Impact of Copper Slag—A …
Therefore, utilization of copper slag for recovering iron can be used to feed the steel plant, stimulating its resurrection. This can also help in the waste management of slag, thus reducing environmental pollution. Most slags contain 40 wt.% iron, and extraction of this iron from CS is ideal [ 70 ]. 2.2.
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Potential environmental pollution from copper metallurgy and …
This paper presents the latest overview of the environmental impact of wastes from the non-ferrous metallurgical industry.Ashes, slags and dusts – by-products from mining and metal processing – are sources of toxic metals, such as Pb, Cd, Hg, As, Al, as well as particulate matter.Physical, chemical and biological processes transform …
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Steel plant slag dumps: A potential source of …
1 Citations. Metrics. Abstract. The metallurgical processes in production of iron and steel from ores produce slags (blast furnace slag and basic oxygen furnace …
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A new process to recycle metallurgical slag
In the next stage, at the Seversky Pipe Plant, researchers selected samples of waste from the electric furnace production that were similar in structure. These samples contain a high iron content.
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Table 1 Chemical analysis of the blast furnace flue dust
These elements were attributed to metallurgical production of iron. The processes involved sorting, dismantling, crushing, and smelting of scrap metals of different compositions, which produce ...
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Complex treatment of mining and metallurgical wastes for …
2.2. Ferric iron production and ferric leaching experiments. Leaching of the old pyrite flotation tailings with 10% sulfuric acid solution (10.0 L) was conducted in a 5.0-L plastic column with 6.0 kg of the waste to obtain the ferric containing solution for the subsequent ferric leaching experiments.. Ferric leaching of the copper converter slag …
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Recovery of Zinc and Iron from Steel Mill Dust—An Overview of …
All kinds of waste materials from iron and steel plants are mixed, pressed into blocks and added into a shaft furnace after pretreatment . The reduction of iron oxide in the shaft furnace starts when the temperature of the reaction zone rises to 900 °C. Then, the sponge iron is generated with the temperature rising to 1400 °C . Finally, the ...
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Electrochemical recovery of tellurium from metallurgical industrial waste
Abstract The current study outlines the electrochemical recovery of tellurium from a metallurgical plant waste fraction, namely Doré slag. In the precious metals plant, tellurium is enriched to the TROF (Tilting, Rotating Oxy Fuel) furnace slag and is therefore considered to be a lost resource—although the slag itself still contains a …
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Cobalt Metallurgy | SpringerLink
The cobalt slag contains 6–7% of cobalt and 25–30% of nickel. One method of extracting cobalt from cobalt slag is as follows: adding cobalt slag to sulfuric acid solution and dissolving it with sulfur dioxide to prepare a solution containing nickel sulfate, cobalt sulfate, and a few impurities such as copper, iron, arsenic, and antimony.
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Minerals | Special Issue : Metallurgical Slags
Multidisciplinary studies of metallurgical slags are mostly focused on: (1) reuse of these materials (for construction purposes or element recovery), (2) potential environmental impact of these wastes, (3) exploration how metallurgy evolved through human history. The purpose of this Special Issue is to collect research papers presenting …
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A cleaner process for lead recovery from lead-containing hazardous
The feasibility of recovering lead other valuable metals from lead paste by using iron-containing waste as sulfur-fixing agent was confirmed. Sulfur was immobilized in the form of solid FeS, which reduced the generation of SO 2 gas. Lead-containing waste after roasting, the content of lead and sulfur were 79.75% and 73.29%.
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Life cycle assessment of melting reduction treatment for iron and …
The Iron and steel plant mainly uses steel slag as raw material, and dust removal ash, OG mud, gas ash, sulfuric acid slag as auxiliary materials. With five kinds of raw materials, the iron in solid waste can be recovered via melting reduction process and new building materials can be produced at the same time.
ادامه مطلبA review on the metallurgical recycling of vanadium from slags: …
The metallurgical treatment of vanadium bearing slag has been conducted through the roasted-assisted leaching process on industrial scale, but the main problems that remain to be addressed are moderate vanadium recovery rate, high energy consumption, release of harmful gases such as CO 2, SO 2 and Cl 2, low degree of …
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Studies of Soils and Vegetation on Non-ferrous Metallurgy Slag Dumps
The purpose of this literature review was to assess the knowledge degree of the soils and vegetation formed on the non-ferrous metallurgy slag dumps. Most of the research was carried out for the ...
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Use of industrial residues for heavy metals immobilization in
Steel slag is a solid waste or by-product from steel production. It mainly consists of silica (SiO 2 ), lime (CaO), iron oxide (Fe 2 O 3, FeO), alumina (Al 2 O 3 ), magnesia (MgO), manganese oxide (MnO 2 ) and phosphorous oxide (P 2 O 5 ); the exact composition varies with the furnace type, steel grades and pre-treatment methods …
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The Comprehensive Utilization of Steel Slag in Agricultural Soils
As a product of waste steel industries, slags are high in CaO, P2O5, SiO2, MgO, MnO, and Fe oxides, which can be used for fertilizer applications (Wang and Cai 2006;Ning et al. 2016;Das et al ...
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Recycled Smelter Slags for In Situ and Ex Situ Water and
Slag, a byproduct of metallurgical smelting processes, is a mixture of metal oxides, silicon dioxide, and different compounds [1,2,3,4,5].It is produced from raw ore combustion or the extraction of specific minerals from smelting materials [1,5].Huge quantities of slags (1868.8 million tonnes of global steel production in 2019–2020) are …
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Recycling of ironmaking and steelmaking slags in Japan and …
The mass production of steel is inevitably accompanied by large quantities of slags. The treatment of ironmaking and steelmaking slags is a great challenge in the sustainable development of the steel industry. Japan and China are two major steel producing countries that have placed a large emphasis on developing new technologies …
ادامه مطلبProcessing of Non-Ferrous Metallurgy Waste Slag for its Complex
over the years, slag dumps from the Waelz process at the Achpolymetal metallurgical plant continue to pollute the environment; the slag from Waelz processing, formed over many years of operation of the metallurgical plant Achpolymetal, is a valuable mineral raw material and can be used as an iron-containing additive in the production of ...
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Comprehensive Utilization Technology of Steel Slag
Because of its composition and unstable physical property, steel slag can rarely be used directly. Thus, it needs to be pretreated after taken out of the furnace. The pretreatment of steel slag is helpful for recycling the iron-containing components in steel slag. On the other hand, it can ensure the stability of slag composition and structure.
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Sustainability | Free Full-Text | Metallurgical Wastes …
The largest quantities of dust and slag were generated during 2005–2008, and the lowest quantities were generated in 2009, 2002 and 2003. Metallurgical solid waste from steelmaking in electric arc …
ادامه مطلبCo-treatment of Waste From Steelmaking Processes: …
The iron and steel industry is an energy-intensive sector, and large amounts of waste/ by-products are generated during the steelmaking process, such as CO 2, metallurgical …
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A new process to recycle metallurgical slag
In the next stage, at the Seversky Pipe Plant, researchers selected samples of waste from the electric furnace production that were similar in structure. These …
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Metallurgical processes for scandium recovery from
Research Highlights This paper comprehensively reviews the metallurgical processes to recover scandium from various sources. Residues, tailings and waste liquors in the production of other metals are the resources for scandium. The most promising scandium resources for its production are bauxite and nickel laterite ores. Combined …
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Progress in treating difficult-to-handle dust and sludge and full …
Iron and steel metallurgical dust is a solid waste produced in the production process of the iron and steel industry. It has the characteristics of many types, large quantities, complex components, and many valuable elements. Japan and Germany have realized the centralized treatment and comprehensive utilization of metallurgical solid …
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Utilization of Metallurgical Wastes in Indian Steel Industries
leads to large amount of metallurgical solid waste. The slag, dust and sludge generated by integrated steel plants was called waste. These wastes contain some valuable resources and ele-ments such as iron, zinc, lead, calcium, etc., which can be re-covered and reused in steel making process or can be used as
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