Composition of trace elements in blast furnace slag

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  • OBORTS Company, Opposite the residence of old General Mambou, Near Dragage, Bastos, Yaoundé, Cameroon
    Email: [email protected]

  • Original Research Main and Trace Element Distribution in

    Slag has been deposited since the 1950s at Central Dumping Site Pleszów near Kraków in southern Poland (Fig. 1; N: 50°03’46.89”, E:20°07’12.91”), which current-ly covers an area of about 156 ha. The deposited material is a byproduct of both blast furnace (BF) and basic-oxy-gen furnace (BOF) processes. Slag from an open hearth

  • Understanding Blast Furnace Ironmaking with Pulverized

    Nov 04, 2018· Understanding Blast Furnace Ironmaking with Pulverized Coal Injection The possible uses depend on the properties and form of the slag. The composition of the slag depends on the quality of the BF raw materials. (magnesium), together with other compounds of S, Fe (iron), Mn (manganese), and other trace elements. The amount of slag

  • MATERIAL SAFETY DATA SHEET SECTION 1- CHEMICAL …

    Granulated Slag Material Safety Data Sheet Page 1 of 7 MATERIAL SAFETY DATA SHEET SECTION 1- CHEMICAL PRODUCT AND COMPANY IDENTIFICATION Product Names: St. Marys CemPlus, Slag Granules, Slag Cement, Ground Granulated Blast Furnace Slag (GGBFS), Granulated Blast Furnace Slag (GBFS) WHMIS classification D2A, E

  • USER GUIDELINE FOR COAL BOTTOM ASH and BOILER SLAG …

    in a slag-tap furnace, as much as 50 percent of the ash is retained in the furnace as boiler slag. The chemical composition of bottom ash and boiler slag particles is controlled by the source of fixation, and adsorption of trace elements that would occur if bottom ash were mixed with native soils is not expected (Edil et al. 2002

  • Chemical composition of raw materials – Stazione

    For some raw materials such as coal and graphite, and for secondary raw materials such as glass cullet, blast furnace slag, calumites, etc., in addition to the classic analysis of chemical composition and trace contaminants, it is of fundamental interest to know the total content of carbon and sulfur, which are determined using an infrared S/C

  • Blast Furnace Control using Slag Viscosities and Liquidus

    Keywords: Pyrometallurgy, blast furnace, slag viscosity, slag liquidus temperature, phase equilibria Abstract – The viscosity of molten slag in blast furnace operations is an important process variable, influencing the rate and location of reactions inside the furnace, as well as the ease with which the final slag could be removed from the

  • Effect of Blast Furnace Sludge (BFS) Characteristics on

    The mineralogical composition of BFS has been studied by several researchers [2] [10] , which has shown that BFS is composed mainly of hematite Distributions of trace elements in the BFS samples are listed in Table 1. which is an additional material added to the blast furnace to produce a suitable blast furnace slag [16] . 4.3. Particle

  • Slag: What is it good for? Utilization of steelmaking slag

    Ferrous slag, a term that includes iron and steel slag, is the byproduct generated after smelt - ing iron ore in a blast furnace and making steel, most commonly in a Basic Oxygen Furnace (BOF) or Electric Arc Furnace. Ferrous slag is widely used in construction but vast amounts continue to …

  • STUDY OF IRON AND STEEL SLAG AS A PRODUCT WITH …

    Mar 04, 2017· PROPERTIES OF SLAG Blast furnace slag is chemically and mineralogically as consistent as naturally occurring aggregates, comprising primarily the silicates and aluminosilicates of calcium and magnesium together with other compounds of sulfur, iron, manganese and other trace elements. In terms of its mineralogy, BFS

  • MASTER'S THESIS - DiVA portal

    In this thesis it was attempted to describe the distribution of trace elements between metal, slag and gas phase in the blast furnace and basic oxygen furnace(BOF) process using thermodynamic equilibrium calculations.The work was focused on developing an approach to calculate the distribution of zinc in the blast furnace andchromium in

  • The Effect of Chemical Composition of Blast-Furnace Slag

    Oct 20, 2017· The Effect of Chemical Composition of Blast-Furnace Slag on Compressive Strength and Durability Properties of Mortar Specimens William J. Johnson University of South Florida, [email protected] Follow this and additional works at:https://scholarcommons.usf.edu/etd Part of theCivil Engineering Commons

  • Chemical and mineral composition of furnace slags produced

    Nov 22, 2018· The roasting losses may not exceed 6% if the furnace slag is used as the only additive for the production of aggregates (the furnace slag aggregate may be used in construction industry after treatment) (Smarzewski and Barnat-Hunek 2015). In slags there occur trace elements which constitute from 0.1 to 0.3% of the total weight of the waste.

  • The effect of replacing sand by iron slag on physical

    types exhibit different properties. Blast furnace slag is a non-metallic material consisting of silicates and aluminosilicates of calcium and magnesium together with other compounds of sulfur, iron, manganese and other trace elements. Air-cooled slag, which is allowed to solidify slowly in ladles or pits, is by

  • Physical and chemical characteristics of slag produced

    slag and blast furnace slag. Based on its chemical composition (classified according to the oxide mod-ulus),slagisdividedinto:carbo-silicateslag,alumino-silicate slag and silicate slag. However, the most commonly used classification method is based on particle size and grades slag as fine, medium and coarse. The preferred method of handling

  • Evaluation of a BOF Slag Recovery Treatment combining

    Basic Oxygen Furnace slag is an example of steel by-product, which reuse and recycle options are supported by suitable chemical composition according to internal and external plant requirements. trace elements, such as heavy metals, can be released and leached to surface which water.

  • Kinetics of steel slag leaching: Batch tests and modeling

    As already mentioned BOF steel slag also contains trace amounts of elements potentially mobile and toxic to the environment (Geiseler, 1996; Proctor et al., 2000; Motz and Geiseler, 2001). This specially applied to Cr and V, which are the most abundant trace metals in the studied slag (1916 ±50 mg/kg and 679±25 mg/kg, respectively).

  • Lead Slag - an overview ScienceDirect Topics

    Lead slag contains trace element contents including Sr, As, Cu, Cl, Sb, Co, Ba, Ni, Zr, Cr, Ce, V, Cd, U, Nd, Mo, Sn, Y, W, Li, Th, Se, In, Rb, Ag, Cs, Bi, Te, and Tl. The contents of these trace elements range from 0.18 to 2470 mg/kg.

  • BLAST FURNACE SLAG IN ROAD CONSTRUCTIONS - …

    The main components of air cooled blast furnace slag are silicon, calcium, magnesium and aluminium while the concentration of most trace elements is comparable with that in natural materials, one exception is vanadium which occurs to a larger degree in air cooled blast furnace slag.

  • Thermodynamic Study of Trace Elements in the Blast Furnace

    Therefore, it is of interest to study how trace elements behave in the process to be able to follow the material flow of trace elements within the integrated steel plant.In this thesis it was attempted to describe the distribution of trace elements between metal, slag and gas phase in the blast furnace and basic oxygen furnace (BOF) process

  • Analysis of Slag Flow in Blast Furnace during the

    influencing the blast furnace operations and the quality of the metal. The flow-characteristic of blast furnace slags is strongly influenced by the extent of reduction of iron oxide at low temperature (in the granular zone) besides being influenced by the composition, and the quality and the quantity of the gangue in the iron bearing materials. II.

  • TRENDS OF Co AND Mn LEACHING FROM SLAG MORTARS

    The paper aims at investigation of leaching the selected trace metals (cobalt and manganese), from cement mortars of different compositions, during a 180-day bacterial exposure. Keywords: bio-corrosion, heavy metals, blast furnace slag, leaching 1. Introduction The current trend of using secondary fuels for cement production and the

  • Mineralogy and the release of trace elements from slag

    The bulk composition of the slag suggests a high viscosity of the melt and the mineralogy suggests a high silica content of the melt. Bulk slag trace-element chemistry shows that the dominant metal is Zn with >28.4 wt.% in the Zn-rich material and between 212 and 14,900 mg/kg in the other slags.

  • slag MID RIVER MINERALS

    The composition and nature of the slag is essential to steel making. The addition of limestone/dolomitic stone in its natural form or calcined form, to the iron and steel production process removes the majority of the gangue in the slag. Iron Blast Furnace Slag (BFS) Other uses include, glass making, trace elements in agriculture

  • Remarks on Special Issue on Iron and Steel Slag

    types of iron and steel slag, blast furnace slag consisting mainly of lime and silica and steel- In particular, for the steelmaking slag, which widely varies in composition and properties, the company is striving to develop various analyzing ultra-trace elements and adopting an effective biological approach. Therefore, with

  • Ground Granulated Blast-Furnace Slag: Its Chemistry and

    blast-furnace slag is rapidly chilled, as by immersion in water. It is a non-metallic product, consisting of silicates and aluminosilicates of calcium and other bases, developed in a molten condition simultaneously with iron in a blast furnace. It is used as a cementitious material in Portland cement concrete.

  • Modelling of Trace Material Flow Distribution in a Melter

    The accumulation of trace elements in a blast furnace may lead to decreasing productivity, increasing reducing The prevalent process conditions like gas composition, temperature and pressure which are required for these slag produced in the process. The highest amount of potassium components can be found at the interface

  • Evaluation of trace element availability from secondary

    of the aforementioned elements (24 and 31 %, respec-tively) indicated that significant variation in the concen-tration of trace elements can occur due to fluctuation in process conditions and/or slag characteristics. The sequential extraction procedure suggested potential phyto-availability of V (123 mg kg-1, d.w., amounting to 41 %

  • Carbonation of Steel Slag for CO2 Sequestration: Leaching

    Carbonation of industrial alkaline residues can be used as a CO2 sequestration technology to reduce carbon dioxide emissions. In this study, steel slag samples were carbonated to a varying extent. Leaching experiments and geochemical modeling were used to identify solubility-controlling processes of major and trace elements, both with regard to carbonation mechanisms and the environmental

  • Technical Report UDC 669 . 184 . 28 : 543 . 4 /. 5

    for the composition analysis of slag aggregate for concrete 2) and blast furnace slag fine powder for concrete.3) When steel slag is used, the composition of effluent from the slag becomes a problem because it can adversely affect the quality of groundwater, etc. Inci-dentally, it is known that steel slag, which remains in molten state

  • MF 185-5 BF Slag as an Agricultural Material

    Blast Furnace Slag as an Agricultural Material MF 185-5 NATIONAL SLAG ASSOCIATION .nationalslagassoc Page 4 BIBLIOGRAPHY: 1. Increasing Crop Yields by Using Blast-Furnace Slag, C.E. Elliott, Research Librarian, National Slag Association, 1946. 2. Trace Elements in Agricultural Slags, Chichilo and Whittaker, USDA, Agronomy

  • (PDF) Uses of Blast Furnace Slag as Complex Fertilizer

    Chemical Analyses of BFSChemical analysis of blast furnace slag was carried out by melting the slag samples with Na 2 CO 3 and the resulting solid dissolved in HCl (2 N) [16].SiO 2 MgO, CaO and sulphur was determined by gravimetric method, Al 2 O 3 , Fe 2 O 3 by titration of MnO and MgO were determined by spectroscopic method [18].1 g of slag

  • EVALUATION OF SUPER CLEAN STEELS ACCORDING TO …

    chemical composition of the slag is controlled and refin-ing processes optimized. STEEL MAKING IN ELECTRIC ARC FURNACE Proposed technology of making was based on presumed guarantee of chemical composition of the primary melt, especially contents of Cu, As, Sn and Sb trace elements. Suitable conditions during the charge melting and oxidiz-Table 4.

  • Autogenous Self-Healing in Blast Furnace Slag Cement by

    Autogenous Self-Healing in Blast Furnace Slag Cement by Sodium Monofluorophosphate J. Kempl and O. Çopuroğlu trace elements and rare earth elements (111355 Merck . IV). All samples, the standard and the procedural blanks were analyzed in 1% v/v solution composition of a slag bearing cement paste changes in dependency of the

  • Chemistry of the Ironmaking by Blast Furnace Process

    Nov 22, 2013· The silicon and manganese levels in the hot metal and the recirculation of alkalis are also influenced by slag composition. The major constituents of blast furnace slags are the four oxides CaO, MgO, SiO2 an Al2O3 and the sum of their concentrations usually exceeds 95 %.

  • Physical and chemical characteristics of slag produced

    slag and blast furnace slag. Based on its chemical composition (classified according to the oxide mod-ulus),slagisdividedinto:carbo-silicateslag,alumino-silicate slag and silicate slag. However, the most commonly used classification method is based on particle size and grades slag as fine, medium and coarse. The preferred method of handling

  • Chemical and Mineralogical Characterization of Ghanaian

    blast furnace slag is widely known to serve as raw material for cement production as well as concrete manufacturing unit due to the presence of pozzolonic activity [6,11,12]. Electric arc furnace (EAF) slag cannot be used for such purposes due to its high iron content. EAF has

  • Slags, ferrous metal, blast furnace - Registration Dossier

    EC number: 266-002-0 CAS number: 65996-69-2 The fused substance formed by the action of a flux upon the gangue of the iron-bearing materials charged to a blast furnace and upon the oxidized impurities in the iron produced. Depending upon the particular blast furnace operation, the slag is composed primarily of sulfur and oxides of aluminum, calcium, magnesium, and silicon.

  • Geochemical Characterization of Iron and Steel Slag and

    The hard and dense nature of air-cooled slag makes it suitable for its primary use as aggregates in concrete, asphalt paving, fill and road bases. Almost all granulated blast furnace slag (e.g., cooled with high-pressure sprays of water) is used in concrete mixes or in blended cements as a partial substitute for Portland cement . In addition to

  • Slags, ferrous metal, blast furnace - Registration Dossier

    K d values of trace elements of slags. Soil-to-water partition coefficients K d of individual trace elements occurring in slag were calculated from their concentration in the solid slag, divided by their concentrations in leachate. In total, slag from 58 steel works with blast furnaces, basic oxygen furnaces (converters) and/or electric arc