The feasibility of steel slag used as an iron fertilizer was studied in a pot experiment with corn. Slag alone or acidified slag was added to two Fe-deficient calcareous soils at …
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The ash/slag ratio, unburned carbon content, major and trace element compositions, and leaching characteristics of fly ash and slag samples were tested. Based on the measuring results, the fertilizer availability of fly ash and slag from biomass power plants and the appropriate measuring temperature for UBCs are discussed.
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As a product of waste steel industries, slags are high in CaO, P2O5, SiO2, MgO, MnO, and Fe oxides, which can be used for fertilizer applications (Wang and Cai 2006;Ning et al. 2016;Das et al. 2020).
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In China, the first steel slag fertilizer program invested by Taiyuan Iron and Steel Group and Harsco Corporation of the USA started building in 2011 . Steel slag is the result of industrial processes in which iron mineral is reduced, generating products as pig iron (iron with a high proportion of carbon) and steel.
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slag-based fertilizer to Si-deficient paddy soil is necessary for improving both rice productivity and brown spot resistance. The immobile silicon deposited in host cell walls and papillae sites is the first physical barrier for fungal penetration, while
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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 …
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Although there are several attempts to demonstrate the and fertilizer capacity of steel slag, at a legal framework level there were no allowances, at least in Italy, for the recovery of refining steelmaking slag as soil fertilizer prior to the conceptualization of this work. Thus, the novel aim of this work is to prove the compliance of ...
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The term "slag" is used in the specifications of slag silicate fertilizer and slag phosphate fertilizer in the Fertilizer Control Law. The slag can be mixed with livestock wastes to make compost, so that both slag and livestock waste …
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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 slag with fly ash directly. When the fly ash and blast furnace slag were mixed with a mass ratio of 7.76:92.24, the effective silicon content in silicon fertilizer was highest after the condition of quenching.
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Abstract Fertilizers made of steelmaking slag are important inexpensive materials for recovering degraded paddy fields. The results of our previous works showed that essential Ca and Si elements were effectively supplied by the dicalcium silicate phase (C2S) while the glassy phase of the CaO–SiO2–FeO system served as an Fe source. In this study, we have …
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Slag phosphate fertilizer has been used to provide substantial increases in crop yields, sweeten pastures, and is beneficial to grazing livestock. In Japan, basic slag is used for silicate fertilizer, lime fertilizer, phosphate fertilizer, and special fertilizer.
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fertilizers, is further reduced. Basic slag It is a by-product from the steel industry. During the steel manufacture, the P in the iron ore is removed to get a high quality steel as the steel containing more than 2% of P is brittle. The basic slag is obtained by the various processes of steel manufacture. 1. Thomas and Gilchrist method
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Because blast furnace slag contains fertilizer components CaO, SiO 2, and MgO, it is used in rice cultivation as calcium silicate fertilizer.In addition to these three components, steelmaking slag also contains components such as FeO, MnO, …
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The slag was applied at the bottom of the furrow rows. Basic fertilization was carried out using 8.0 Mg ha −1 of cow manure and 100 kg P 2 O 5 ha −1. The slag (Steel slag - EAF dust, Multiserv/Gerdau; Recife, PE, Brazil) was passed through a 2-mm sieve and chemically characterized (EMBRAPA, 2010) and analyzed for Si content (Korndörfer et ...
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Basic Slag as a Fertilizer. By F. E. Thompson. Join Our Community of Science Lovers! Sign Up for Our Free Daily Newsletter. Email Address.
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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. They contain elements with useful …
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Secondary metallurgy slag (SMS) complies with the specifications for manufacturing fertilizers, soil improvers and materials, and sanitization of sewage …
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Slag-based silicate fertilizer has been widely used to improve soil silicon- availability and crop productivity. A consecutive early rice-late rice rotation experiment was conducted to test the impacts of steel slag on soil pH, silicon availability, rice growth and metals-immobilization in paddy soil. Our results show that application of slag at a rate above higher or …
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The feasibility of steel slag used as an iron fertilizer was studied in a pot experiment with corn. Slag alone or acidified slag was added to two Fe-deficient calcareous soils at different rates. Results showed that moderate rates (10 and 20 g kg −1) of slag or acidified slag substantially increased corn dry matter yield and Fe uptake ...
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In our prior research, it was noticed that the silicate fertilizer amendment markedly shifts soil microbial communities and functional genes associated with C, N and P cycling in paddy soils (Das et al., 2019).Wang et al. (2020) found that the application of steel slag with biochar remarkably increased the abundance of methanotrophs in paddy soils by 3–6 fold …
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Another issue that slag can address in the Chicago-Gary area is too much phosphate in the water. Phosphate is an important nutrient for plants and is a key ingredient in most fertilizers. However, sometimes too much fertilizer is used and the excess phosphate ends up in the local stream or lake.
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Application of the slag to paddy rice cultivation — Japan's first use of the general waste slag as fertilizer — Nipponsteel & Sumikin Engineering Technical Report Vol. 9 (2018) 4/14 3 Fertilizer Components of DM Calcium Silicate One type of slag fertilizer for growing paddy rice is slag siliceous fertilizer (registration name:
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The dissolution behavior of slag fertilizers in the pore water of rice soil was evaluated, using a soil-filled column test. As the details of this experimental method have been explained in a previous paper [6, 7], it will be described only briefly here.The column was made using a vinyl chloride tube, consisting of 15 cm of a plow layer containing pore water with soil …
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Slag, a nutrient rich by-product of steel making provides an alternative. The suitability of slag application in soil as a fertiliser alternative was tested. Slag raised yield but …
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In this regard, the effect of steel slag based-fertilizer was investigated in the greenhouse durum wheat cultivation in pots under salt-stress conditions. Two slag doses: 10 g slag/ kg soil (D1) and 20 g slag/ kg soil (D2) were evaluated under no salt-stress (0 mM NaCl) and salt-stress conditions (100 mM NaCl) for salinity stress mitigation.
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It is well documented that slag-based silicon fertilizers have beneficial effects on the growth and disease resistance of rice. However, their effects vary greatly with sources of slag and are closely related to availability of silicon (Si) in these materials. To date, few researches have been done to compare the differences in plant performance and disease resistance between …
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It is well documented that slag-based silicon fertilizers have beneficial effects on the growth and disease resistance of rice. However, their effects vary greatly with sources of slag and are closely related to availability of silicon (Si) in these materials. To date, few researches have been done to compare the differences in plant ...
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Steelmaking slag contains various mineralogical phases, including water soluble phases such as free CaO and the solid solution consisting of 2CaO·SiO2 and 3CaO·P2O5. However, the contribution of each of these phases to the rice growth through the supplement of nutritious element in the rice soil is not clear. In this research, we modified a commercial …
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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...
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Steel slag as fertilizer was demonstrated to increase yields in crops such as corn, sugarcane, radish, soybean, and rice, hinting at the potential for enhanced carbon bio-fixation through slag addition (Wang and Cai, 2006, McCray and Ji, 2013, Gutierrez et al., 2010, Deus et al., 2020, Ning et al., 2016b).
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Macro-and microelements in leaf, husk and seed of bean plants cultivated in: control soil (C-without EAF slag or NPK fertilizer), soil enriched with synthetic NPK fertilizer (F), soil enriched ...
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