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Granulation and Heat Recovery from Metallurgical Slags
2019.12.9 Granulation is the most widespread method of slag handling, employed to a number of metals as well as practically all metallurgical slags such as copper [ 17 ],
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Full article: Characterisation and leaching behaviour of
2021.12.16 The fumed molten slag then undergoes gravitational settling to separate sulfides and metal(loid)s into a matte and speiss layer. The molten slag, from which
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A new technological approach to the granulation of slag
2021.11.3 During granulation, due to rapid cooling (quenching), the slag solidifies in a glassy (amorphous) state and the latent heat of crystallization (300–400 kJ/kg) is not
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Applied Thermal Engineering - ResearchGate
2023.10.25 slag and ferroalloy slag granulation, the main mass fraction peak was located in the range of 2.44– 3.14 mm. For copper slag granulation, the main mass
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Granulation and Heat Recovery from Metallurgical Slags
2019.12.9 In this paper, the slag granulation and heat recovery options are reviewed and given a critical evaluation, aiming to provide a basis for future directions in slag
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A Review of Granulation Process for Blast Furnace Slag
2021.12.4 After a thorough comparative analysis of various treatment technologies, it can be concluded that centrifugal granulation affiliated with dry granulation is the
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Numerical Simulation of the Slag Granulation Process in Gas
2023.5.11 Currently, most studies of gas granulation in slag involve macroscopic experiments, and numerical simulation studies are rare. Wang et al. (2020a, b) studied
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Process Concept for the Dry Recovery of Thermal Energy of
2021.6.24 The liquid slag is poured into the slag tundish which homogenizes the slag and guarantees a constant mass flow. The heat exchangers extract thermal energy from
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Mechanical Activation of Granulated Copper Slag and Its
2019.3.6 Granulated copper slag (GCS), produced by water granulation of liquid CS, consists generally of SiO2, FeO, and minor amounts of other compounds, with complex
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Granulation and Heat Recovery from Metallurgical Slags
2019.12.9 Metallurgical slags are produced at a massive rate of over 750 Mt/year, and carry a thermal energy equivalent to 40 Mt/year of coal. The potential mineral and thermal energy values of slags are in the order of $22 b and $3–6 b per year. Such attractive figures, together with tightening legislation on disposal of slag and the carbon footprint
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我国冶金固废大宗利用技术的研究进展及趋势 - USTB
2021.9.15 冶金固废 /. 大宗利用 /. 钢渣 /. 赤泥 /. 铜渣 /. 铁合金渣. Abstract: In China, the annual discharge of steel slag, red mud, copper slag, and most ferroalloy slag has reached 10–100 million tons; these slags are difficult to be resued due to poor utilization in the fields of cement, concrete, or road pavement.
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Process Concept for the Dry Recovery of Thermal Energy of
2021.6.24 In order to increase the contact time between slag and copper cooling rollers, the direction of rotation was chosen to turn outwards, so that not one but two strands of slag plates are created, one on each roller. ... Fenzl T (2020) A significant change in slag treatment—an update on industrial dry slag granulation. In: Global slag conference ...
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Frontiers Study on Preparation of Oxygen Carrier Using Copper Slag
2021.11.22 Copper slag, an important by-product of the copper smelting process, is mainly composed of 2FeO SiO2, Fe3O4, and SiO2. Due to the sufficient metal oxides, copper slag is regard as a potential oxygen carrier (OC), which can be applied in chemical looping technology. This research proposed to use the granulated copper slag particles
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有色冶金渣制备胶凝材料研究现状与展望
2020.7.17 有色冶金渣是有色金属冶炼的副产品，利用有色冶金渣制备可替代水泥的胶凝材料，是实现有色冶金固废大宗量资源化利用的重要途径之一。本文从有色冶金渣成分与结构特征、潜在的胶凝活性及其评价、活性激发方法、胶凝材料制备工艺和胶结体性能5个方面，系统总结了国内外有关有色冶金渣 ...
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Characterization and Recovery of Copper from Converter Copper Slag
2018.8.1 Converter copper slag can be viewed as an important secondary resource for valuable metals, considering its high commercial value. The current research investigates the recycling of copper by a combination of theoretical and experimental methods. Based on a modified Stokes equation, it was determined that copper droplets in the molten slag
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Mechanical Activation of Granulated Copper Slag and Its
2019.3.6 Mechanical activation of granulated copper slag (GCS) is carried out in the present study for the purposes of enhancing pozzolanic activity for the GCS. A vibration mill mills the GCS for 1, 2, and 3 h to produce samples with specific surface area of 0.67, 1.03 and 1.37 m2/g, respectively. The samples are used to replace 30% cement (PC) to get 3
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High-valued and deep utilization technology of copper slag
2022.11.30 In order to achieve single recovery of Fe, Cu and Si in copper slag and deep removal of impurities in products, the activated reduction combining directional oxidation are adopted to improve the separation limit of target components, which mineral constituent as well as chemical composition at different stages are investigated through
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Recovery of Copper and Cobalt from Converter Slags via
2021.3.12 Large amounts of solid wastes are produced in copper and aluminum smelting processes, which not only cause losses of valuable resources but also threaten the ecology and environment. In this study, a reduction–sulfurization smelting method was used for recovering Cu and Co from converter slags by using spent pot lining (SPL) as the
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A Review of Granulation Process for Blast Furnace Slag
2021.12.4 Blast furnace slag is a by-product of blast furnace (BF) ironmaking produce. Every pig iron production is accompany by 0.3 ~ 0.6 tons of blast furnace slag produced with the temperature of 1350 ć ~1450 ć (1600~1 800 MJ sensible heat, equivalent to 55~61kg standard coal combustion after the heat generated). On this basis, the BF
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Full article: Comprehensive utilisation of blast furnace slag
2023.7.21 Comprehensive utilisation of blast furnace slag. China is the world's largest steel producer, with the China Iron and Steel Association estimating that the country's crude steel production in 2022 will be 935 million tonnes [1]. In 2017, the metallurgical slag output of iron and steel enterprises in China reached more than 440 million tons ...
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A new technological approach to the granulation of slag
2021.11.3 The technological factors required to improve the operational properties of granulated metallurgical slags demanded in the building industry have been analyzed. In order to satisfy these factors, a new technology for hydro-vacuum granulation of slag melts (HVG) has been developed. It is shown that the main advantage of the proposed HVG
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Slag Granulation with Continuous Dewatering
2021.6.16 Molten slag is often considered as a waste material when it is cast into slag pits. INBA slag granulation and dewatering system is the proven route for converting molten slag into a value added product for the cement industry. The INBA system comprises two main components – the granulation unit which utilizes a granulation
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Experimental investigation on molten slag granulation for
2016.6.25 For blast furnace slag and ferroalloy slag granulation, the main mass fraction peak was located in the range of 2.44–3.14 mm. For copper slag granulation, the main mass fraction peak moved to the range of small diameter with
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Slag Granulation - Paul Wurth
Slag Granulation. Slag handling is an important aspect of modern blast furnace operation. Today, blast furnace slag is a value added product for the cement industry, using granulated slag sand as CO2-friendly substitute of clinker in cement production. Paul Wurth has developed the INBA® slag granulation process, incorporating our proprietary ...
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Comprehensive review on metallurgical recycling and cleaning of copper slag
2021.5.1 The copper slag produced by the slag cleaning furnaces as a final by-product, yields copper in the range of 0.55–1.3 wt.% in the discarded slag, with copper losses of most plants in the discarded slag limited between 0.8 wt.% and 1.0 wt.% (Coursol et al., 2012). However, the final copper slag still contains large amounts of valuable
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Preface for Thematic Section: Slag Granulation - Springer
2019.5.31 Granulation of molten metallurgical slags is a value-adding process that converts a low-value byproduct (and sometimes waste) into a saleable product with multiple uses by the building and construction industries. In particular, when ironmaking slag is granulated and is substituted for Portland Cement, the environmental and economic
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Energy recovery from high temperature slags - ScienceDirect
2011.9.1 Centrifugal-granulation-assisted thermal energy recovery (CGATER) is one of the most promising routes to enable waste heat harvest from molten slags. However, it remains a grand scientific and technological challenge to produce fine particles from the bulk high-temperature molten slag, especially at large slag throughput.
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Applied Sciences Free Full-Text A Method for Synthesizing
2023.7.19 Utilizing iron silicate copper slag as supplementary cementitious material (SCM) is a means to improve resource efficiency and lower the carbon dioxide emissions from cement production. Despite multiple studies on the performance of these slags in SCM applications, the variations in cooling procedure, grinding, and methods for evaluating
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Installation of a State-of-the-Art Slag Granulation Plant
2018.11.22 Slag removal. This paper deals with the contract to supply a granulation facility for blast furnace ‘B’. The installation of the plant at Blast Furnace ‘B’ was required in order to complement the already existing facility at blast furnace ‘A’. Typical performance of Blast Furnace ‘B’ over the last few years is indicated in ...
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我国冶金固废大宗利用技术的研究进展及趋势 - USTB
2021.9.15 冶金固废 /. 大宗利用 /. 钢渣 /. 赤泥 /. 铜渣 /. 铁合金渣. Abstract: In China, the annual discharge of steel slag, red mud, copper slag, and most ferroalloy slag has reached 10–100 million tons; these slags are difficult to be resued due to poor utilization in the fields of cement, concrete, or road pavement.
Read More
A hybrid cooling system to enable adhesion-free heat
2021.12.1 In our experiments, the liquid slag was successfully granulated into small particle of 2.5 mm in diameter even at a record-breaking flowrate of 600 gs −1 (or 2.2 tonh −1) [18]. This mode stands out from direct droplet, ligament and film fragmentation modes as the most suitable mode to handle high-throughput slag granulation.
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(PDF) USE OF COPPER SLAG AS SUSTAINABLE AGGREGATE
2014.10.17 The mixes containing steel and Fig. 10 System boundary description for cement, fine aggregate, copper slag and steel slag for the present study [46,[64][65][66] [67] 69] copper slag are economical ...
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Centrifugal granulation behavior in metallic powder ... - Nature
2020.10.28 The effect of size distribution of slag particles obtained in dry granulation on blast furnace slag cement strength. Powder Technol. 362 , 32–36 (2020). Article CAS Google Scholar
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Stabilization of Stainless Steel Slag via Air Granulation
2019.2.8 In stainless steel production, slag from argon oxygen decarburization (AOD) converters is dumped on to the ground and then slowly cooled. The slag undergoes phase transformation from β-dicalcium silicate (β-C2S) to γ-dicalcium silicate (γ-C2S) at approximately 500 °C to 450 °C, resulting in slag volume expansion, disintegration, and
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Energy recovery from high temperature slags - ScienceDirect
2011.9.1 The trials for dry granulation of slag date back to 1930 [20], but the research surged in 1970s and 1980s in Europe and Japan, resulting in laboratory and pilot scale testing of several methods. In Section 3, the processes that have been proposed for energy recovery from slag based on the use of dry granulation are described. 2.2.
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‘Dry’Granulation of Slags for Producing Cement Binder
2024.1.1 FIG 4 - Dry granulated ironmaking slag, atomised at 1450°C and 1600 rpm. Dominant particle size fraction (+1.70 to -2.79 mm) is shown. FIG 5 - Measured particle size of dry granulated slag (0.5 ...
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Applied Thermal Engineering - ResearchGate
2023.10.25 slag and ferroalloy slag granulation, the main mass fraction peak was located in the range of 2.44– 3.14 mm. For copper slag granulation, the main mass fraction peak moved to the range of small ...
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Processing Converter Slags with Total Utilization of All
2020.11.11 With conversion of copper smelting plants to autogenic melting the problem arises of separate treatment of converter slag (CS). Almost all plants converted to autogenic melting use slag flotation [1,2,3,4,5,6,7,8,9,10].Sometimes they float a mixture of furnace and converter slags after granulation [] of a mixture of CS and original ore in
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