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Depending on the used production technology, the steel slag can be divided into a basic oxygen steel slag, an electric arc furnace slag and a ladle furnace slag (De Brito and Saika, 2013). The steel slag is used as a secondary cementitious binder, or aggregates for road construction ( Sheen et al., 2013 ; Manso et al., 2004 ).
Development of Manufacturing Process for Blast Furnace Slag Coarse Aggregate with Low Water Absorption 98 JFE TECHNICAL REPORT No. 23 (Mar. 2018) spraying water on a heated steel plate. The experimen-tal method is shown in Fig. 2. Water was sprayed on a SC450 steel plate (150×150×56) which had been heated
The steel slag produced during the primary stage of steel production is referred to as furnace slag or tap slag. This is the major source of steel slag aggregate. After being tapped from the furnace, the molten steel is transferred in a ladle for further refining to remove additional impurities still contained within the steel.
George C. Wang, in The Utilization of Slag in Civil Infrastructure Construction, 2016 10.5.3 Reclaimed asphalt pavement containing slag aggregate. Recent research found that some steel slag aggregates in RAP, with 92% steel slag aggregates, showed considerably high expansion potential, up to 6.2% swell. The overall RAP gave maximum expansion amounts of 1.69% and 1.46%, respectively, which ...
Oct 27, 2011· With world steel production now well over a billion tonnes per year, the slag that arises from some of the processes involved is a major resource. Traditionally it has been used mainly as an aggregate but for some types there are other applications, …
steel slag can, which is why the track officials chose steel slag as the coarse aggregate for the pavement. Similarly, when Colorado state transportation officials wanted to repave scenic I-70 through Glenwood Canyon they chose steel slag coarse aggregate because they wanted a long lasting, stable, durable, high friction pavement.
production of iron and steel slag in Europe in 2008 was of 45.6 million tonnes1 and decreased in 2009 and 2010 only due to the steel production slow down caused by the economic crisis. The main compounds contained into the slags are calcium, silicon, magnesium, aluminium and iron oxides.
Jun 01, 2017· Steel slag is a typical industrial waste. Its use in asphalt pavement is a hot topic. The lack of a production technique for high-quality steel slag aggregate has limited the wide use of steel slag in asphalt pavement in China. The primary objective of this research is to establish an advanced technique for steel slag coarse aggregate production.
slag show worse performance in comparison with concrete mixtures containing limestone aggregate. Keywords: Steel Slag, Limestone, Concrete, Aggregate Two common methods are used in steel production as basic oxygen furnace and electric arc furnace1. Electric arc …
Apr 04, 2012· D. Sichen, in Fundamentals of Metallurgy, 2005 9.5.1 Slag–metal mixing. In steelmaking, slag–metal mixing is a very common phenomenon and it occurs due to the shear at the slag–metal interface caused by excessive liquid steel flow. 37 This mixing leads to emulsification of steel in slag, which increases the total interfacial area and consequently the rate of slag–metal reactions.
Jun 28, 2021· Jun 28, 2021· Around 70% of the world's steel production depends on the blast furnace process (integral route), as the availability of scrap limits electric arc furnace production to 30% of global demand . In the BOF process, the amount of BOF slag produced ranges between 0.1 and 0.2 tonnes per tonne of steel produced [3,4].
Steel slag and old bank slags may undergo volumetric expansion in the presence of water. The risk of damaging expansion occurring when using steel slag produced in modern processes is minimised by a combination of careful production control and processing. Air-cooled blast furnace slag …
Jun 01, 2017· Jun 01, 2017· Steel slag is a typical industrial waste. Its use in asphalt pavement is a hot topic. The lack of a production technique for high-quality steel slag aggregate has limited the wide use of steel slag in asphalt pavement in China. The primary objective of this research is to establish an advanced technique for steel slag coarse aggregate production.
steel production are slag (90% by mass), dust and sludge. Process gases, for example, from the coke oven, BF or BOF are also important co-products. However, this fact sheet will mainly focus on solid co-products. On average the production of one tonne of steel results in 200 kg (EAF) to 400 kg (BF/BOF) of co-products. These
with steel slag to enhance the pavement performance. There is a lack of studies about the technology of steel slag aggregate production. Processing technology has a direct impact on the size and performance of steel slag, so it is crucial to develop an integrated process of steel slag aggregate production to increase the properties of aggregate in
The basis of slag is limestone used as auxiliary material in the production of iron and steel. While limestone may seem unrelated to the production of iron and steel, it actually is an essential auxiliary material that is added during the production process.
Croatian EAF black steel slag, generated from carbon steel production process in CMC Sisak d.o.o., is the most interesting from the asphalt technology point of view, but in order to assess the suitability and reusing potential of EAFS in asphalt mixture production, it is necessary to know its chemical, radiochemical, physical,