slag recycling process

Treatments and Recycling of Metallurgical Slags
2018.11.7 Choi et al. described two possible methods to recycle ladle slag: (a) by pouring molten ladle slag to another ladle, at time (taking
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Recycling of ironmaking and steelmaking slags in Japan and China
2022.4.6 Technological innovations in slag recycling are crucial for the steel industries in Japan and China. Here, the current status and developing trends of
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Steel slag in China: Treatment, recycling, and management
2018.8.1 Steel slag is the main waste product in the steelmaking process. Because of its chemical composition and technical properties, it can be reused as raw material in
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Comprehensive review on metallurgical recycling and cleaning of
2021.5.1 Metallurgical recycling and cleaning of copper slag 4.1. Flotation. Flotation is an effective physical beneficiation for the recovery of copper in metallic and sulphide...
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Resource utilization of slag from desulphurization and slag
2022.5.1 In order to make the slag from desulphurization and slag skimming (SDSS) to be comprehensively recycled and utilized, a combined process of beneficiation and
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The recycling and reuse of steelmaking slags — A review
2019.7.1 1. Introduction During the steelmaking process, various slags are produced as by-products (Shen and Forssberg, 2003). The first stage of steel production is blast
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Steel slag in China: Treatment, recycling, and management
2018.8.1 Steel slag is the oxidized material that is generated when lime, dolomite, and other auxiliary materials are added, and oxygen is blown onto the pig iron produced
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An Overview of Precious Metal Recovery from Steel
2023.5.19 Steel slag is a solid waste of the steel industry, produced during steel production. Three types of slag, namely electric arc furnace (EAF), basic oxygen furnace (BOF), and Linz-Donawitz processed slag
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Slag Metallurgy and Metallurgical Waste Recycling JOM
2016.7.29 For copper slag recycling, the fourth article, entitled “Mechanism of Mineral Phase Reconstruction for Improving the Beneficiation of Copper and Iron from
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A new process to recycle metallurgical slag - Phys
2021.8.11 A new process to recycle metallurgical slag. Researchers at Ural Federal University (UrFU) and the Institute of Metallurgy of the Ural Branch of the Russian
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Steel slag in China: Treatment, recycling, and management
2018.8.1 Abstract. Steel slag is the main waste product in the steelmaking process. Because of its chemical composition and technical properties, it can be reused as raw material in steel plants and can serve as a substitute for aggregates in civil engineering. In this paper, we reviewed steel slag treatment, recycling, and management in China.
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Slag Recycling and Metal Recovery - MEKA
MEKA is designing and manufacturing customized steel slag processing and metal recovery plants for each project-specific purposes. Our portfolio; MEKA offers stand-alone machines, process solutions, turnkey plants, separation and sorting technology, and control and automation solutions perfectly tailored to individual requirements. DESCRIPTIONS.
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Effect of direct charging of hot recycled slag on hot metal ...
2019.7.17 Additionally, the slag generated in the decarburization converter was only 30–40 kg per ton of steel when the less slag steelmaking process was adopted in the decarburization converter. As a result, the smelting rhythm of the duplex process inevitably produced a considerable influence on the application of slag recycling process.
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ENVIRONMENT L P OFILE EPORT FOR THE LUMI IUM REFINING
For the salt slag recycling process, the coverage is about 80 per cent of the existing treatment capacity in Europe. Following consolidation, the data collected have been integrated in LCA software (i.e. Gabi) to generate the full environmental impact assessment of aluminium processes (i.e. reporting scopes 1,
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Characterization and Valorization of Kanbara Reactor
2015.9.9 The desulfurization waste slag from hot metal pretreatment process is a typical solid waste generated in the integrated steel company. About 7- to 9-kg waste slag is produced per ton hot metal treated in the Kanbara Reactor (KR) desulfurization process, and the waste slag contains approximately 40–60 % CaO and large amounts of iron.
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Lithium-Ion Battery Recycling─Overview of Techniques and Trends
2022.1.19 Given the costs of making batteries, recycling battery materials can make sense. From the estimated 500,000 tons of batteries which could be recycled from global production in 2019, 15,000 tons of aluminum, 35,000 tons of phosphorus, 45,000 tons of copper, 60,000 tons of cobalt, 75,000 tons of lithium, and 90,000 tons of iron could be
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Recycling of steel slag as a flux for submerged arc welding and its ...
2021.3.26 The slag generated by the steel plant has been utilized to produce submerged arc welding flux. The flux produced by recycling steel slag has been applied in the submerged arc welding process. The effects of recycled slag on the chemical composition, microhardness, and microstructure of weld metal have been evaluated. For
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Development of Slag Recycling Process in Hot Metal Desulfurization
2010.4.23 In order to develop an environment-friendly steelmaking process, a slag recycling process for hot metal desulfurization by mechanical stirring was designed. The process was developed with 70 kg-scale hot metal experiments and actual plant tests. The recycled slag has a 70% desulfurization ability compared with that of virgin flux (CaO
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The recycling and reuse of steelmaking slags — A review
2019.7.1 Slag is a mainly non-metallic by-product that is made up of silicates, alumina silicates, calcium aluminum silicates, and iron oxides (Joulazadeh and Joulazadeh, 2010). During the BOS process a proportion of the molten iron cannot be recovered so elemental iron is often observed in the slag (Yildirim and Prezzi, 2011).
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Slag Metallurgy and Metallurgical Waste Recycling JOM
2016.7.29 Slag is a typical byproduct generated during high-temperature metallurgical processes. It must be treated appropriately to meet the increasingly strict environmental requirements and to realize the economic benefits.1,2 The present topic, “Slag Metallurgy and Metallurgical Waste Recycling,” collects eight articles, which
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Promising technologies of coal ash and slag waste recycling
According to the Ministry of Natural Resources and Environment of Russia, Russian coal-fired power plants produce 22 million tons of coal ash and slag annually, and only 10–15% of the waste gets recycled. Consequently, the accumulated coal ash and slag waste is around 1.5 billion tons currently and steadily grows.
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AluSalt Salt Slag Recycling Aluminium Recovery ALTEK
2021.6.22 Maximise aluminium recovery by recycling the salt slag in house. Improved flexibility and control in your operations. 97% salt recovery in the same KCI:NaCI ratio and particle size. Environmentally friendly
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Separation of valuable elements from steel making slag by chlorination ...
2020.7.1 Thus, the development of an effective process for recycling steelmaking slag without slag aging is very important. From the abovementioned viewpoints, there have been investigations on the development of effective treatment and utilization methods to recycle the Fe and CaO in steelmaking slag for the ironmaking process (Yahata et al.,
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Sustainable Management of Salt Slag
2022.4.19 In this work, a two-step process for the valorization of salt slag was developed that rendered zeolite as the main added-value product and NaCl and NH3 as byproducts. First, salt slag was hydrolyzed at 90 C and at a solid/water ratio of 1/3. More than 90% of salt and ~90% of ammonia were recovered.
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Measures to Decrease and Utilize Steelmaking Slag
2018.12.10 Although a multistage refining process is applied in most steelmaking shops and recycling of decarburization slag is conducted, the amount of steelmaking slag generated is still increasing. In particular, steelmaking slag produced by integrated steelmaking mills is increasing steadily and has reached 125–130 kg/t.
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Recycling Free Full-Text Pyro-Hydrometallurgy Routes to
Ferronickel slag is a by-product of nickel smelting that provides an abundant silica source. Based on data, every ton of nickel production is equal to eight tons of ferronickel slag production, increasing without any recycling process. It is essential to create an end-to-end process for nickel production and its by-products because this would be a problem in the
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Decarburization Slag - an overview ScienceDirect Topics
Figure 1.3.39 shows the concept and the operation result of the slag recycling process [35]. In this process, decarburization slag is recycled to the dephosphorization process using BOF. The total lime consumption is decreased to 12–18 kg t − 1 when the silicon content in the hot metal is 0.2–0.4%.
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Assessment of Electric Arc Furnace (EAF) Steel Slag Waste’s Recycling
Steel slag is one of the most common waste products from the steelmaking industry. Conventional methods of slag disposal can cause negative impacts on humans and the environment. In this paper, the process of steel and steel slag production, physical and chemical properties, and potential options of slag recycling were reviewed. Since steel
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Free Full-Text Sustainable Management of Salt Slag - MDPI
2022.4.19 One of the most important wastes generated in the secondary aluminum recycling process is salt slag . It comes from scrap or slag melting processes, where fluxing salts (NaCl/KCl, up to 50% of the furnace charge) are added to prevent the oxidation of the aluminum metal on the surface of the melt.
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Environmental and Socioeconomic Impact of Copper Slag—A
2021.12.3 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, silica, and alumina. Slag is a major problem in the metallurgical industries as it is dumped into heaps which have accumulated into millions
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