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Fertilizer. The use of fertilizers and materials produced from blast furnace and steel slags has a long tradition. For example Thomasphosphate had been used for more than hundred years. Silicate lime fertilisers ( blast furnace lime and converter lime) are approved fertilizers in Germany since more than 60 and 30 years, respectively.
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The schematic diagram of pig iron and blast furnace slag production process is given in Fig. 1. Fig. 1. Schematic illustration of pig iron and slag production process in a blast furnace. 518 Dervis Ozkan et al. / Materials Today: Proceedings 11 (2019) 516â€"525 3. Utilization of Slag Reutilization of industrial waste slags as industrial …
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1. Introduction. Blast furnace slag (BFS), a byproduct of the iron-production process, is generally composed of silicate (SiO 2) and aluminum oxide (Al 2 O 3) from the primary iron ore and calcium oxide (CaO) from the added lime (Horii et al., 2015; Piatak et al., 2015).BFS belonged to non-hazardous waste (Proctor et al., 2000; Hybská et al., …
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Blast Furnace Slag (BFS) is a by-product of iron making with a potential to be used in different applications. ... energy consumption 3 and production costs 2,4. One of these potential ...
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Steel slag (SS) and granulated blast furnace slag (GBFS) are solid wastes with cementitious properties from the metallurgical industry. After hot disintegrating process, the f-CaO reacted with water vapour to generate Ca(OH) 2 and improve the soundness problem of SS [14].The existance of GBFS could also react with the Ca(OH) 2 generated …
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Ordinary Portland cement (OPC) is an important material in infrastructure construction. According to statistics, the annual production of OPC in China can reach 2.2 billion tons [].However, OPC not only consumes a lot of energy in the production process but also emits CO 2 into the air. Studies have shown that the cement industry is the third …
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Effects of blast furnace slag on the immobilization, plant uptake and translocation of Cd in a contaminated paddy soil. Shuang Xu a., Aiting Chen a., Yaojing …
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The effective utilization of slag fertilizer in agriculture to neutralize soil acidity, improve crop productivity, mitigate greenhouse gas emissions, and stabilize heavy metals in contaminated soils turns it into a high value added product in sustainable …
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In order to reduce the swelling caused by the formation of ettringite, industrial by-products had been used as substitutes for lime and cement, such as ground granulated blast-furnace slag (GGBS) [7, 38, 55, 56, 58].However, GGBS needed alkali activation to produce calcium silicate hydrate (CSH), calcium aluminate hydrate (CAH), and calcium …
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Approximately 60% of blast furnace slag is used as a raw material for this purpose. ... Because blast furnace slag includes fertilizer components CaO, SiO 2, and MgO, it is used in rice cultivation as a calcium silicate fertilizer. To make rock wool used as thermal insulation, molten slag is formed into fibers, and then processed into sheets or ...
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The performance of blast furnace slag treated by wind quenching is significantly better than that of water quenching slag, and the heat recovery rate is high, …
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cate fertilizer made from blast furnace slag began to decrease sharply in the early 1970s. According to Nippon Slag Association's statistics on the use of slag in 2012, the total consumption. ndment was 260 000 tons.2.2 Fertilizers made from blast furnace slag and steelmaking sl. gIron and steel slag can largely be divided into blast furnace ...
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The paper presents the basic characteristics of slag, analyses and it's modification by incorporating some essential plant nutrients and the possibility of its application as …
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BFS (blast-furnace slag) is a by-product in the production of iron and steel manufacturing, its Generated during the process of reducing iron ore by coke in a blast furnace, the blast furnace slag is basically inorganic in nature. BFS consists primarily of silicates, aluminosilicates, and calcium-alumina-silicates.
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Water- cooled blast furnace slag is called granulated blast furnace slag. Production of slag silicate fertilizer in Japan peaked at 1,400,000 t per year in 1968 (Kato 2002) and decreased to ...
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The effects of the process conditions on the dissolution rates of iron, titanium, and magnesium were investigated through the experiment. The results showed that the optimal synthesis process conditions for foliar fertilizer are 560°C for 12 min, with the mass ratio of potassium bisulfate to titanium-bearing blast furnace slag at 6:1.
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BFS effectively increases rice production and results in Cd levels safe for consumption. ... Blast furnace slag (BFS) is a by-product and waste material generated massively in iron plants. ... K fertilizer were applied in each container as 0.15, 0.1, and 0.15 g·kg −1, respectively. The amount of fertilizer applied is calculated as pure ...
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During the steel production process, considerable amounts of solid wastes are being generated in steelmaking units such as blast furnace (BF) slag, tar sludge, flue dust, Linz–Donawitz (LD) converter slag, etc. The basic oxygen furnace (BOF) steelmaking slag also known as LD slag, is one of the important industrial byproducts generated in …
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Both blast furnace slag and steelmaking slag have been utilized as raw materials for fertilizer. Fertilizers made of blast furnace slag or steelmaking slag are categorized in …
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The expanded slag ball is a porous lightweight slag formed by cooling the slag with high cooling water. The production methods include spray method, trench method and roller method. It can be used to make lightweight aggregate, inner wall panels, floors, etc. it can also be used in load-bearing structures. Blast furnace slag can also be …
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Decreasing the slag rate can lead to a lower fuel rate and higher productivity in the blast furnace (BF). Indian iron ore is known to have adverse alumina–silica ratio. Therefore, to reduce the slag rate there is a need to either remove alumina from the iron ore or to add more silica to dilute the effect of alumina in slag. The latter would increase the …
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Blast furnace slag (BFS) is a by-product resulting from the fusion of iron ore into pig iron, in a process carried out in industrial units called blast furnaces, where the oxides contained in the iron minerals are reduced and the impurities that accompany them are separated [ 1 ]. Slag is formed by the melting of impurities from iron ore after ...
DetailsThe quality of raw materials (iron ore, coal, and coke) has a clear impact on the carbon emissions of the hot metal production in steel making. So far, very little work has been done to measure and quantify this impact. Yet for benchmarking, technology choice and general carbon optimization are important elements. The total slag …
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Blast furnace slag (BFS) is a byproduct generated during the ironmaking process in a blast furnace. It mainly consists of silicates and aluminosilicates, with a high content of amorphous structure. BFS is commonly used in the cement and construction industries [1], [2]. However, high-quality BFS is in short supply because of the great …
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Blast furnace slag (BFS), a byproduct of iron-producing process, has been applied as silicate fertilizer in rice paddy. Silicate fertilizer contains lime and silicate as main …
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Fig.4: Blast Furnace (BF) Fig.5: Air Cooled BF Slag Fig.6: Granulated BF Slag T able 4: Blast Furnace & BOF Converter Slag Composition Plant CaO SiO 2 Al 2 O3 MgO FeO MnO S Basicity
DetailsThe addition of electron acceptors to boost soil microbes competitive to methanogens could minimize methane (CH 4) emissions from paddy soils.To study the microbiological mechanisms underlying the suppression of CH 4 emissions, silicate fertilizer made from blast furnace slag that contains electron acceptors, such as Fe, …
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Blast furnace slag (BFS), a by-product of iron making, has been utilized as silicate fertilizer in Korean and Japanese rice paddy. Silicate fertilizer, which has high contents of active iron and ...
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Silicate fertilizer made of blast furnace slag decreased seasonal CH 4 flux by 20% over the control. Adding a small amount of iron rust as an electron acceptor …
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Silicate fertilizer made of blast furnace slag was effective to mitigate CH 4 emission during rice cultivation. • Silicate fertilization significantly improved rice …
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1. Introduction. Resource utilization of solid waste was a crucial means to realize circular economy. As the main by-product of iron and steel industry, blast furnace slag (BFS) was produced approximately 300 million tons per year in China [1, 2].Although the utilization rate of slag had been significantly improved, there was still a considerable …
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Abstract. Blast furnace slag (BFS), a byproduct of iron-producing process, has been applied as silicate fertilizer in rice paddy. Silicate fertilizer contains lime and silicate as main components and iron and manganese as electron acceptors. This amendment improves soil productivity and mitigates methane (CH 4) emissions.
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Blast furnace slag (BFS) is by-products during the production of pig iron at high temperature (about 1300–1500 °C) in a blast furnace [].BFS is formed during the melting of iron ore, flux (i.e., limestone and dolomite) and inorganic parts from the fuel combustion [].The chemical composition of BFS can generally be described in the …
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In this paper, a novel conceptual design of 13X zeolite and hydrotalcite-like compound production process by utilizing blast furnace slag was proposed. In the leaching process, the major influence factors were focused on the slag particle size, hydrochloric acid concentration and reaction temperature.
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Comprehensive utilization of blast furnace slag, municipal sludge and kaolin clay in building brick manufacture: Crystalline transformation, morphology observation and property assessment ... The results indicated that the addition of BFS would promote liquid glassy phase production in bricks due to the higher content of alkali/alkaline-earth ...
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The water quenching granulation process, also known as the wet treatment process, is a process that uses a high-pressure water stream to quickly cool the blast fur-nace slag in …
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Ferrous slag is the by-product of iron and steel manufacturing. It arises from the conversion of ores to iron, hot iron to steel, from melting scrap in an electric arc furnace or from the subsequent treatment of crude steel. Each year, about 45 million tonnes of ferrous slag (iron and steel slag) is generated in Europe. ... Fertilizer; News.
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In view of the high content of silica in fly ash and abundant heat in blast furnace slag, high efficiency silicon fertilizer was prepared by mixing blast furnace …
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