iron recovery from bof slags
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Iron recovery and active residue production from basic
Iron recovery and active residue production from basic oxygen furnace (BOF) slag for supplementary cementitious materials. Author links open overlay panel Hui Guo a b Suhong Yin a Qijun Yu
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Iron recovery and active residue production from basic
Feb 01, 2018· A method was proposed to recover iron from BOF slag and enhance reactivity of the residue as supplementary cementitious materials. • Additives were optimized to recover iron from BOF slag and the recovery efficiency was more than 95%. • By replacing 30% mass of cement with residue, the compressive strength of the mortar can reach 52.3 MPa.
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Separate Recovery of Iron and Phosphorus from BOF Slags by
Shuji TAKEUCHI, Nobuo SANO, and Yukio MATSUSHITA Synopsis: The recovery of iron from BOF slags by reduction is one of the most effective ways of its utilization. However, phosphorus which is simultaneously reduced dissolves in liquid iron almost completely. The present work was undertaken to seek the possibility of the separate recovery of iron and phosphorus from BOF slags.
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Phosphorus removal and metal recovery from BOF -slags
treatment of steelmaking slags. In its core part, the reactor (cf. Figure 1), graphite cubes are inductively heated up to 1,650 °C. -reactor. Phosphorus removal and metal recovery from BOF -slags Iron from a blast furnace, the so -called pig -iron, contains carbon as well as a range of addi-
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Separate Recovery of Iron and Phosphorus from BOF Slags by
The present study was carried out to search for the possibility of the separate recovery of iron and phosphorus as gas from BOF slag by using graphite crucible or graphite powder with the presence of tin bath, which is considered to enhance the activity of phosphorus in iron reduced from slag or not to absorb the phosphorus vapor readily.
Ask for priceReduction Behaviour of BOF Slags by Carbon in Iron
Basic oxygen furnace (BOF) slag contains a significant amount of iron-containing species, which is considered to be iron resources and therefore need to be recovered. the iron content in the
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An Overview of Recovery of Metals from Slags
In the process of converting pig iron into steel, some co-products are generated—among which, basic oxygen furnace (BOF) slag is highlighted due to the great amount generated (about 126 kg of
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ITP Steel: Recycling and Reuse of Basic Oxygen Furnace
the efficiency of iron unit recovery from BOF/BOP slag. Second, the project calls for the development of value-added feedstocks for steel mill furnaces that will generate energy savings to the integrated iron and steel industry. Third, West Virginia University-National Mine Land Reclamation Center (WVU-NMLRC) researchers will evaluate the use
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Iron recovery and active residue production from basic
Iron recovery and active residue production from basic oxygen furnace (BOF) slag for supplementary cementitious materials. Author links open overlay panel Hui Guo a
Ask for priceSeparate Recovery of Iron and Phosphorus from BOF Slags by
Shuji TAKEUCHI, Nobuo SANO, and Yukio MATSUSHITA Synopsis: The recovery of iron from BOF slags by reduction is one of the most effective ways of its utilization. However, phosphorus which is simultaneously reduced dissolves in liquid iron almost completely. The present work was undertaken to seek the possibility of the separate recovery of iron and phosphorus from BOF slags.
Ask for priceReduction Behaviour of BOF Slags by Carbon in Iron
Basic oxygen furnace (BOF) slag contains a significant amount of iron-containing species, which is considered to be iron resources and therefore need to be recovered. the iron content in the
Ask for priceSeparate Recovery of Iron and Phosphorus from BOF Slags by
The present study was carried out to search for the possibility of the separate recovery of iron and phosphorus as gas from BOF slag by using graphite crucible or graphite powder with the presence of tin bath, which is considered to enhance the activity of phosphorus in iron reduced from slag or not to absorb the phosphorus vapor readily.
Ask for pricePhosphorus removal and metal recovery from BOF -slags
treatment of steelmaking slags. In its core part, the reactor (cf. Figure 1), graphite cubes are inductively heated up to 1,650 °C. -reactor. Phosphorus removal and metal recovery from BOF -slags Iron from a blast furnace, the so -called pig -iron, contains carbon as well as a range of addi-
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The treatment of Basic Oxygen Furnace (BOF) slag with
Iron is recovered from steel slags as their iron content can reach 14–30wt% (Gautier et al., 2013; Lan et al., 2017). Typical methods include crushing, grinding, screening and magnetic separation. Lan et al. (2017) showed optimized recovery efficiencies of 93.20% mag-netic iron in BOF slag. Guo et al. (2018) mixed BOF slag with an ad-
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RECOVERY OF IRON FROM COPPER FLASH SMELTING SLAGS
Recovery of Iron from Copper Flash Smelting Slags Figure 3 shows the rapid decreasing of copper content in the slag during the first 15 min-utes with the graphite rod introduced into the melt, while the iron concentration is main-tained almost constant over same period of time, suggesting that a
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Innovative approach to recovery of iron from steelmaking slags
Jul 18, 2013· (2010). Innovative approach to recovery of iron from steelmaking slags. Ironmaking & Steelmaking: Vol. 37, Clean metal technology, pp. 536-540.
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Recover Manganese Fluosilicic Acid Leaching
Sep 16, 2018· BOF slags range in manganese content from 1 to 7 pct and average 3.5 pct. BOF slap are a possible domestic source of manganese the United States could use if economical recovery methods were found. The U.S. Bureau of Mines examined manganese recovery from steelmaking slags as early as the 1950’s.
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RECOVERY OF VANADIUM FROM V-BEARING BOF-SLAG
recovery from dusts and slaGs RECOVERY OF VANADIUM FROM V-BEARING BOF-SLAG USING AN EAF M. Lindvall1, S. Rutqvist2 and G. Ye1 1 Swerea MEFOS, Box 812 SE-971 25 Lulea, Sweden; [email protected] 2 SSAB Strip Products, SE-971 88, Lulea, Sweden; [email protected] ABSTRACT
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Evaluation of a BOF Slag Recovery Treatment combining
This paper fits in withthe BOF slag management, treatment and recovery option. The development of an Excel-based model is presented, to simulate theproposed treatment process, by combining experimental data and process modelling, providing a preliminary proof of BOF slag reuse. BOF slag by ILVA Steelworks has supplied
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Separation and Recovery of Phosphorus from Steelmaking
Iron and steel slags can be divided broadly into blast fur-nace slag and steelmaking slag: the latter can be subdivided into hot-metal pretreatment slag, basic oxygen furnace (BOF) slag, and electric arc furnace (EAF) slag. Because phosphorus was considered not to be present in blast fur-nace slag for the sake of the present study, the calculations
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Iron and Steel Slag Utilization: A Comprehensive Analysis
the metal iron recovery ratio. Figure 3 Schematic flow of crushing, magnetic separation and classification 3.3 Crushing and Classification slag, especially BOF slag, is hard and durable in wear resistance therefore it can also be used as the aggregate for the asphalt pavement mix. BOF slags most important factor as to why it can be
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Recovery Of Iron From Steel Furnace Slag
Metal recovery: steel slags.They are produced in basic oxygen furnace (bof) and electric arc furnace (eaf).Because iron in the steel slags is normally encountered in the form of steel (710 %), iron oxide and iron bearing minerals, the recovery of iron is achieved
Ask for pricePhosphorus removal and metal recovery from BOF -slags
treatment of steelmaking slags. In its core part, the reactor (cf. Figure 1), graphite cubes are inductively heated up to 1,650 °C. -reactor. Phosphorus removal and metal recovery from BOF -slags Iron from a blast furnace, the so -called pig -iron, contains carbon as well as a range of addi-
Ask for priceSeparate Recovery of Iron and Phosphorus from BOF Slags by
The present study was carried out to search for the possibility of the separate recovery of iron and phosphorus as gas from BOF slag by using graphite crucible or graphite powder with the presence of tin bath, which is considered to enhance the activity of phosphorus in iron reduced from slag or not to absorb the phosphorus vapor readily.
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Evaluation of a BOF Slag Recovery Treatment combining
Introduction Slags in Steelmaking Plants Types, Components and Possible Reuses Slag Types Blast Furnace (BF) Slag Basic Oxygen Furnace (BOF) Slag Electric Arc Furnace (EAF) Slag Secondary Metallurgy(SM) Slag Slag Main Components Silica Calcium Oxide Magnesium Oxide Aluminium Oxide Iron Oxides Metal Iron (10−40%wt) Possibilities of BOF Slag Recycle and
Ask for priceRecovery Of Iron From Steel Furnace Slag
Metal recovery: steel slags.They are produced in basic oxygen furnace (bof) and electric arc furnace (eaf).Because iron in the steel slags is normally encountered in the form of steel (710 %), iron oxide and iron bearing minerals, the recovery of iron is achieved
Ask for priceThe treatment of Basic Oxygen Furnace (BOF) slag with
Iron is recovered from steel slags as their iron content can reach 14–30wt% (Gautier et al., 2013; Lan et al., 2017). Typical methods include crushing, grinding, screening and magnetic separation. Lan et al. (2017) showed optimized recovery efficiencies of 93.20% mag-netic iron in BOF slag. Guo et al. (2018) mixed BOF slag with an ad-
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Leaching Basic Oxygen Furnace Slag With Fluosilicic Acid
to the BOF for producing iron, a different type of slag exists today. BOF slags are composed primarily of lime, with very little silica present. Direct ammonium carbamate leaching of BOF slags, without clinkering, has met with only limited success. Since phosphorus removal from BOF slags and older methods of manganese recovery
Ask for priceInnovative approach to recovery of iron from steelmaking slags
Jul 18, 2013· (2010). Innovative approach to recovery of iron from steelmaking slags. Ironmaking & Steelmaking: Vol. 37, Clean metal technology, pp. 536-540.
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SWEREA MEFOS PERSPECTIVE ON METAL RECOVERY
Recovery of vanadium from Swedish BOF-slag has been developed in the IPBM-project. The experimental set-up of the 3 MW DC arc furnace at Swerea MEFOS is shown in Figure 3. This concept was further tested and verified in a recently performed pilot campaign for co-treatment of BOF-slags and BF-sludge within the VILD-project.
Ask for priceRECOVERY OF VANADIUM FROM V-BEARING BOF-SLAG
recovery from dusts and slaGs RECOVERY OF VANADIUM FROM V-BEARING BOF-SLAG USING AN EAF M. Lindvall1, S. Rutqvist2 and G. Ye1 1 Swerea MEFOS, Box 812 SE-971 25 Lulea, Sweden; [email protected] 2 SSAB Strip Products, SE-971 88, Lulea, Sweden; [email protected] ABSTRACT
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Characteristics of Closed Type DC arc Furnace for Molten
expansion. On the other hand, BOF slag contains valuable elements, such as iron and phosphorus. The concept of ‘full utilization of BOF slag’ was proposed by Kubodera et al. in 1979.1) According to this concept, molten BOF slag is charged to the electro-melting furnace and reduced. The reduced slag is used as cement, the hot iron with high
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containing slag and an iron ingot. Iron recovery in the metal phase is 99% for the coarse scrap and 95-96% for fine scrap. Keeping a proper slag/metal ratio is necessary for a good metal separation. The REE-rich slag is subjected to acid leaching and REE recovery as fluorides and/or oxides. The iron-based alloy is a good source of steelmaking
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US4001011A Pyrometallurgical recovery of iron from iron
A process for recovering iron from preliminarily decopperized molten copper smelter slags having an initial composition which includes iron oxide, silica, and aluminum oxide as the major constituents. These constituents are initially present in the range of 40-70 percent FeO, 25-40 percent SiO 2 and 5-10 percent Al 2 O 3 . The slag is maintained in a molten state and a solid reductant is mixed
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Investigation of (BOF) Converter slag use for agriculture
Among the main by-products generated during iron and steel production, such as slags, dusts and sludges, slags constitute about 90% of the total. Slags are currently used in various fields (such as cement production, road construction, environmental recovery in landfill covers, as fertilizer and soil conditioner, etc.) according to their
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Recovery of Manganese From Steel Plant Slag by Carbamate
BOF slags are composed primarily of lime and iron oxides and contain an average of 5.7 pct MnO (7). As part of its mission to reduce dependence on foreign sources for critical and strategic minerals, like manganese, the Bureau conducted research to determine whether man ganese can be recovered from currently produced BOF
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