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For example, SiO 2 content in the BF slag from the various steel plants in India ranges from 30 to 35% while in LD slag range from 12 to 18% [6].
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The LD slag generated by the basic oxygen converter, is one of the waste which can be reused due to the presence of a considerable amount of valuable minerals. In order to recycle and reuse the waste, assessment of their physicochemical, …
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Considering Linz-Donawitz (LD) slag as a waste material for its bulk utilisation, there is a possibility that heavy metals will leach to environment. It necessitates the study on physical, chemical, mineralogical and heavy metals leaching characteristic of LD slag. Short-term leaching procedures like batch leach test (BLT), toxicity …
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Even though the free lime content in LD slags was significantly higher (free lime content of 3.03 and 3.48%) in comparison to granulated blast-furnace slag (GBFS), it had almost a negligible ...
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The slag is a by-product of steel industry. Experimental trials of dry granulation process have been widely performed to granulate Blast Furnace (BF) slag, in addition to, heat recovery from ...
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Abstract. Steel slag, a by-product generated during steel production poses a solid waste disposal challenge. The same slag contains valuables such as titanium, nickel, vanadium, iron, aluminum, silica among others. The extracted components can cause productive value addition in diverse realms like wastewater treatment to semiconductor …
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Ceramic membranes were prepared from Linz-Donawitz (LD) slag obtained from Tata Steel Ltd, India and was utilised for the separation of electro-coagulated by-product. ... (∼96% flux recovery ...
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Current total productions of steel slag in India, are around 12 million tonnes per annum (Indian Minerals Yearbook, May 2016), which is far behind the developed countries. ... The LD slag ...
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LD slag can be utilized in many areas such as soil conditioners, fertilizers, recovery of metal values, etc. Experiments were conducted using pulverized LD slag for …
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This represents 48% of the total steel slags which include LD slag (steel conversion slag), electric arc furnace slag and secondary steel slag. According to the literature survey, many productive commercial uses of slags have been developed (e.g., road bed, fill material) ( Motz and Geiseler, 2001, Proctor et al., 2000 ).
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TSL waste utilisation is around 80% level with inline BF slag granulation is done. A Metal recovery plant from LD slag is installed and commissioned in June 2017; steam …
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The positive effect of natural gypsum on groundnut productivity and availability of Ca and S in soils is well studied, but, utilization of yellow gypsum made from LD-slag as source of Fe, Zn and ...
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Linz-Donawitz Slag (LD Slag) is produced when a basic oxygen furnace is used in a Linz-Donawitz converter where molten pig iron is converted to steel [3]. This LD Slag is recyclable and finds use ...
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LD slag fines in the size range 0-6 mm are obtained after the recovery of metallic iron by means of physical separation in waste recycling plants, and are mostly recycled in sinter-making process.
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978 ChAND et al., Curr.World Environ., Vol. 10(3), 975-984 (2015) table 2: Chemical composition and major phases of typical LD slag generated at integrated steel plant in india Chemical major ...
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AN OVERVIEW OF TREATMENT OF STEEL-MAKING SLAG FOR RECOVERY OF LIME AND PHOSPHORUS VALUES P. N. Chaudhary & J. Pal Scientists, National Metallurgical Laboratory, Jamshedpur ABSTRACT The steelmaking slag containing high phosphorus (1-3 % P2O5) can not be used in blast furnace, as it increases the refining load. Removal
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The main constituents of LD Slag fines in the size range of 0-6 mm after recovering the metallic iron in a waste recycling plant (WRP) mainly contains calcium bearing mineral phases such as mono ...
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This slag material collected in a cast iron ladle for the quenching, where cooling is performed with air or water. The slow cooling rate of LD slag causes its crystalline nature [12]. LD slag primarily comprises of inorganic elements such as CaO, SiO 2, Al 2 O 3, FeO, Fe 2 O 3, MnO, MgO with high CaO content varying from 42% to 50% [4], [13 ...
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LD slag (Linz Donawitz slag) is one of the major industrial by-products generated during steel making in the integrated Tata Steel plant at Jamshedpur, Jharkhand, India. The plant uses approximately 25 million tons of iron ore and coal/coke blend every year to produce about 10 million tons of steel. Hot metal or molten iron from the blast furnace is …
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gomardih. Dolomite mine. Asia's first integrated steel plant. Tata Steel Jamshedpur (TSJ) is our flagship facility. From driving the first stake into the soil of Sakchi village in 1908 to becoming India's steel city, Jamshedpur (also known as Tatanagar) is the soul of the Tata story. Tata steel jamshedpur (TSJ)
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The raw material (LD slag) collected from Rourkela Steel Plant, located in the eastern part of India, was sieved to obtain a particle size on the order of 90–100 μm before being subjected to coating. The LD slag was premixed with aluminum oxide to obtain ratios of 0, 10, 20 and 30 wt% Al 2 O 3 in the final mixture prior to spraying.
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The Fresh sample was simply the LD slag as obtained from SSAB, without undergoing any pre-treatment prior leaching. The OCAC sample was LD slag that had been operated as an active bed material in a 12 MW th circulating Fluidized Bed (CFB) boiler with biomass as fuel. The sample was extracted directly from the boiler after a continuous …
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Steel production results in a high magnitude of wastes that are either processed in the plant or sold for by-product generation due to stringent environmental regulations. Approximately 2–4 ton steel slag is generated per ton of crude steel by the steel plant. The major slags being highlighted are blast furnace (BF) slag, Linz-Donawitz (LD) …
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Energy Management: Energy consumption in most of the integrated steel plants in India is generally high at 6-6.5 Giga Calorie per tonne of crude steel as compared to 4.5-5.0 in steel plants abroad. The higher rate of energy consumption is mainly due to obsolete technologies including problems in retrofitting modern technologies in old plants ...
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Properties of LD Slag from Some Selected Steel Plants in India 1 Sasmita Chand, 1 Biswajit Paul and 2 Manish Kumar 1 Department of Environmental Science and Engineering, Indian School of Mines ...
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and fertilizer industries; Whereas LD slag is not suitable due to high phosphorus content. Till date only 40-50% of LD slag is possible to recycling in India. If removal of phosphorus is …
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Indian steel slag (LD slag) is one of the most important by-product of the steel making process in Iron and steel industries (Chand et al 2016). LD slag is normally disposed …
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The LD slag mainly consists of SiO, CaO, Fe O, 2 2 3 FeO, Al O, MgO, MnO, P O (Motz et al ., 2001). 2 3 2 5 The main mineral phases contained in steel slag are dicalcium silicate (C S ...
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The application of LD slag as a cementitious component instead of aggregate in concrete would boost its reuse and will reduce the cost of construction and …
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LD slag has been used for the recovery metals such as Fe, Co, Cr, Ni, Cu, Al, Pb, Ta, Au, Zn, Nb, and Ag etc. by various physical, chemical, and biological …
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The average rate of generation of LD slag is approximately 150–180 kg per ton of crude steel in India [5]. Researchers also found that this rate of production of LD slag sometimes reaches a high ...
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Linz-Donawitz (LD) slag is a byproduct of the steelmaking industry and contains ~30% Ca, 20% Fe, 5% Mg and 1.4% P. For its application as flux in steelmaking, the phosphorus content has to be ...
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The present article reports a novel process for the recovery of potash values from mica scrap (K2O 8.72%) using Linz-Donawitz Slag (LDS) and NaCl. Acid leaching of ground mica powder suggests a ...
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It is reported that the use of non-metallic LD slag in Bhilai Steel Plant, India, was discontinued due to the higher content of Phosphor and Sulphur [17]. The phosphorus removal from LD slag is a much-researched topic and, several studies have been carried out on this subject [18-23]. The bulk utilization of LD slag through CO 2
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