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About 30% of the global steel production currently follows the scrap/direct reduced iron–electric arc furnace (DRI-EAF) route, which is bound to increase given decarburization …
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A comprehensive review of waste energy of slag and its recovery methods are presented. The waste heat of slags amounts to ∼220 TWh/year. Recovery of three energy forms from slag heat is under development: thermal, chemical, thermoelectric.
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Iron and steel slags have great potential for reducing greenhouse gas emissions. As adsorbent, steel slag has good CO 2 capture ability. Waste heat recovery of molten slag can save energy and reduce CO 2 emissions. As a soil amendment, SS can reduce CH 4, N 2 O and CO 2 emissions.
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Heat Energy Recovery of Granulated Steel Slag with Double Inner Cooling Drum. The technology was developed by Nippon Steel Corporation (NKK). The basic principle is: let the molten slag be cooled by the heat medium circulating inside the drum on the surfaces of the two counter-rotating cylinders, and then recover.
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Indirect carbonation of steel slag is an effective method for CO2 storage, reducing emissions, and promoting cleaner production in the steel industry. However, challenges remain, such as low Ca2+ leaching rates and slag management complexities arising from variations in mineral compositions. To address this, a high-temperature modification process is proposed to …
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The steel industry is an energy-intensive and CO2-intensive industry and the greenhouse gas (GHG) emission in the steel industry was more than 2.95 billion tons in 2012, which faces the …
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According to data from the Nippon Slag Association (2016), steel slag production in Japan reached about 14.1 million tons in 2016, and the utilization rate was 98.4%. Of this, 30.9% of the steel slag was used in civil applications, including coastal protection backfills, earth coverings to correct soft ground, road subgrades, and embankments.
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Steel slag (SS) is a by-product of steelmaking process, accounting for 15–20 wt% of crude steel [1, 2].Statistics show that the global crude steel production in 2021 was about 1951.2 Mt, of which China's production was 103.28 Mt [].However, the comprehensive utilization rate of SS in China is less than 30%, which is far from the utilization level of developed …
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At present, the slag-coal gasification or slag-methane reforming integrated waste heat recovery technology is widely investigated, but fossil fuel consumption in those methods …
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The concept of mineral carbonation for reducing CO 2 emissions was first proposed by Seifritz in 1990 [12].Mineral carbonation is considered as a promising large-scale CO 2 storage application technology [13].As a raw material for mineral carbonation, steel slag has advantages such as proximity to CO 2 emission sources, significant cost savings in …
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It was reported that the energy saving was more than 70 % through this new method compared with the traditional methods. In fact, utilization of the glassy slags (BFS) into …
WhatsApp: +86 18221755073
Iron and steel slags have great potential for reducing greenhouse gas emissions. As adsorbent, steel slag has good CO 2 capture ability. Waste heat recovery of molten slag …
WhatsApp: +86 18221755073
The implementation of green manufacturing focused on investigating the energy saving & CO 2 emission from producing steel & effective utilization of recycling of steel scrap as a way of ...
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Materials and Methods Test material: converter steel slag of a steel factory. Test methods: chemical composition detection, temperature test in the process of steel slag cooling. 4. Analysis of Steel Slag Test 4.1. Analysis of chemical composition of steel slag Steel slag is rich in calcium (Ca), silicon (Si) and other
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A method for producing slag cement by combining molten blast furnace slag with cement production has been developed. This approach enables the recovery of latent heat from molten BFS, which is subsequently employed in limestone decomposition.
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1 INTRODUCTION. Blast furnace slag (BFS) and steel slag (SS), as industrial solid wastes produced in the process of steel-making, account for 80%–90% of the total smelting slag. [] BFS accounts for about 30% of pig iron output, [] while SS accounts for 10%–15% of the crude steel output. [] SS comprises various slags, including basic oxygen furnace slag (BOFS) …
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For slag analysis, Kraushaar et al. demonstrated excellent repeatability for the main constituents of converter slag samples without sample preparation, establishing the basis for future on-line applications of LIBS in the steel-making industry for slag …
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Waste heat recovery from hot steel slag was determined in a granular bed through the combination of numerical simulation and an industrial test method. First, the effective thermal conductivity of the granular bed was calculated.
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Heat Energy Recovery of Granulated Steel Slag with Double Inner Cooling Drum. The technology was developed by Nippon Steel Corporation (NKK). The basic principle is: let the molten slag …
WhatsApp: +86 18221755073
High-temperature molten steel slag is a large amount of industrial solid waste containing available heat energy and resources. This paper introduces an efficient and comprehensive utilization process of high-temperature molten steel slag.
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Waste heat recovery from hot steel slag was determined in a granular bed through the combination of numerical simulation and an industrial test method. First, the effective …
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The steel industry is an energy-intensive and CO2-intensive industry and the greenhouse gas (GHG) emission in the steel industry was more than 2.95 billion tons in 2012, which faces the great challenge of energy saving and CO2 emission reduction in the context of global warming.
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A method for producing slag cement by combining molten blast furnace slag with cement production has been developed. This approach enables the recovery of latent heat …
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Compared with the utilization of traditional steel slag, this process can better utilize the energy and resources contained in steel slag and provides a new method for fully utilizing the waste ...
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Industries worldwide consume approximately 30 % of the global energy supply, with about 10 % of this energy dedicated to metal production, including steel and aluminium [1, 2].The industrial sector is responsible for nearly a quarter of energy-related greenhouse gas emissions, with steel production alone contributing to 7 % of total CO 2 emissions [3].
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It was reported that the energy saving was more than 70 % through this new method compared with the traditional methods. In fact, utilization of the glassy slags (BFS) into the cement industry shared some similar characteristics to the slag wool production method.
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High-temperature molten steel slag is a large amount of industrial solid waste containing available heat energy and resources. This paper introduces an efficient and …
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At present, the slag-coal gasification or slag-methane reforming integrated waste heat recovery technology is widely investigated, but fossil fuel consumption in those methods is not attractive in terms of energy-saving and environmental protection.
WhatsApp: +86 18221755073
The steel slag output is about 12% 15% of the crude steel output[1]. Based on this, it is estimated that the global steel slag output in 2021 would be about 230-290 million tons. China's steel slag production is about 120-160 In 2021, China's steel industry carbon emissions accounted for 15% of the country's total
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There are two predominant methods for steel production: the traditional Blast Furnace method and the ... Uses a high percentage of recycled steel; Lower CO2 emissions: Energy intensive; Requires high-quality scrap …
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About 30% of the global steel production currently follows the scrap/direct reduced iron–electric arc furnace (DRI-EAF) route, which is bound to increase given decarburization efforts by the steel industry. We investigated DRI-EAF slag recycling simulated in laboratory EAF smelting tests to lower its environmental impact.
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The metallurgical industry, especially the steel industry, as one of the most energy-intensive and CO 2-intensive industries, is responsible for around 4–5 % of total world energy consumption [] and 9 % of process CO 2 emissions [2, 3], which is thus faced with the severe challenges of energy saving and emission reduction [].Actually, during the past decades, many …
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Testing physical and mechanical properties of nontraditional concrete with steel slag as a substitute for natural aggregates of 4/8 mm and 8/16 mm fractions confirmed the possibility of using slag ...
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