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Concrete Produced by SteelMaking Slag (Basic Oxygen Furnace) Addition in Portland Cement Hasan Alanyali,* Mustafa C¸o¨l, Muharrem Yilmaz, and S¸adi Karago¨z Faculty of Engineering, Kocaeli University, IzmitKocaeli, Turkey A steelmaking slag (basic oxygen furnace) obtained from the Kardemir Steelworks was modified to be used as a clinker
Basic Oxygen Furnace Refractory Lining. The oxygen top blown converter (Basic Oxygen Furnaces) is blown by industrial pure oxygen furnace. The lining of the furnace is mostly alkaline, like a straight bucket. The oxygen is injected into the surface of metal liquid by the watercooled nozzle at the top of the furnace at a high speed of Mach 3/h.
Although blast furnace slag contains a small component of elemental sulfur (1 to 2 percent), the leachate tends to be slightly alkaline and does not present a corrosion risk to steel in pilings (10) or to steel embedded in concrete made with blast furnace slag cement or aggregates. (11)
pavement, RAP, steel furnace slag, SFS, electric arc furnace slag, EAF, basic oxygen furnace slag, BOF, expansion, autoclave, free lime, free CaO, ethylene glycol test, concrete durability, concrete fracture 18. Distribution Statement No restrictions. This document is available to the public through the National Technical Information Service,
The slag generated from a steelmaking cycle is later processed, and the final product after processing is referred to as basicoxygenfurnace slag (BOF slag). The chemical reactions occurring during the removal of impurities determine the chemical composition of the basicoxygenfurnace slag .
quality and durability of the concrete, in addition to lower CO2 emissions and production costs. On the other hand, a reduction in the mechanical properties was reported when >25% of basic oxygen furnace (BOF) slag aggregate was used in the concrete mixture [7,13,14]. Moreover, some drawbacks such as
The content of iron (Fe) in blast furnace slag (ABS/GBS) is usually lower than wt. % since it results from a reduction process. In contrast to blast furnace slag, basic oxygen furnace slag (BOS) and electric arc furnace (EAF) slag (steel slags) are generated in an oxidizing process and therefore have iron contents that are significantly higher.
Supply of basic oxygen furnace (BOF) steel slag was similarly affected due to plant closures. As per 2017, ground granulated blast furnace slag (GGBFS) sales volumes have failed to match increases set by the overall US cement industry since 2010 despite positive long term trends.
The substitution of Basic oxygen furnace slag enhances the Flexural strength of M25 concrete mix up to certain percentage. After adding 15% Basic Oxygen furnace slag in the mix, there is an increase of % strength after 7 days, and % increase after 28 days.
Use of basic oxygen furnace slag fines in the production of cementitious mortars and the effects on mortar expansion. Construction and Building Materials 2018, 167, 768774. DOI: /
The Old Metallurgical Engineer and Steelmaker says: A mix of highvolatile, medium volatile and lowvolatile coal (volatile meaning the relative content of xylene, toluene, butadiene and other aromatic hydrocarbons) is coked (meaning heated withou...
Basic Oxygen Furnace Steel Slag (BOF or Steel Furnace Slag) This slag Is formed when molten Iron, scrap metals and various fluxes, such as lime, are oxidized by injecting large amounts of pure oxygen into the molten iron mix to create molten steel and molten slag. Slow cooling of the molten slag produces a dense rock material. Principal uses ...
The slag can also be used to create fibers used as an insulation material called slag wool. Basic slag. Basic slag is a coproduct of steelmaking, and is typically produced either through the blast furnace oxygen converter route or the electric arc furnace ladle furnace route.
Slag is poured from the furnace in a molten state. After cooling from its molten state, steel slag is processed to remove all free metallics and sized into products. Basic Oxygen Furnace (BOF) : Oxygen is blown into the furnace vessel through a watercooled oxygen lance oxidizing carbon and the other unwanted elements in the molten iron.
Request PDF on ResearchGate | Modification of Basic Oxygen Furnace Slag for Cement Manufacturing | The use of steelmaking slag without chemical modification presents a deleterious effect on cement ...
Fly ash and Blast Furnace Slag for Cement Manufacturing GBFS is slag from the iron production in Basic Oxygen Furnaces. When this slag is actively cooled and ground, GBFS is produced, which can be utilised as a cement or concrete addition. GBFS is said to increase durability of concrete due to an increased setting time, which reduces
HarbisonWalker International is a predominant supplier of basic oxygen furnace (BOF) refractories in the United States, where the BOF is the primary device used to produce highquality integrated steel.
Little basic oxygen slag is used as a portland cement concrete aggregate because of its unsoundness in concrete. However, soundness of basic oxygen furnace slag in concrete appears to largely depend upon the mineralogical and chemical compositions of the slag.
Jun 19, 2017· This work deals with the modification of one basic oxygen furnace (BOF) slag with the objective of making it an appropriate additive in blended cement formulations. Two different modified slags were produced in a pilotscale metallurgical reactor by mixing additives into 300 kg of remelted BOF slag.
Basic oxygen furnace slag. Basic oxygen furnace slag BOS (also called LDconverter slag)is formed during the conversion of hot metal from the blast furnace into steel in a basic oxygen this process the hot metal is treated by blowing oxygen to remove carbon and other elements that have a high affinity to oxygen.
The slump increases with the increase in the percentage of Basic oxygen furnace slag in the concrete and reaches a maximum of 72 mm at 35% replacement of sand with basic oxygen furnace slag [79], when compared with control mix of concrete (Table 10 and Figures 8 .
Basic oxygen furnace slag at 1200℃ is poured into a shallow slag pot for initial cooling. The slag with reduced surface temperature is transported to a puddle, and then sweltered in a stockpile, which will make it disintegrate into aggregates naturally so that flattened graded aggregates can be collected.
Steel slag can also be produced by smelting iron ore in a basic oxygen furnace. According to methods for cooling molten steel slag, steel slag is classified into five types: natural aircooling steel slag, waterspray steel slag, waterquenching steel slag, airquenching steel slag, and shallow box chilling steel slag .
Basic Oxygen Furnace (BOF) slag is a major waste product generated during the steelmaking process. In India and in most industrial countries, the use of BOF slag as a road ballast and land filler has had a very long history. This being a low end use, a study was conducted to examine the possibility of converting the slag into a hydraulic binder.
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