HSN Code HSN Description. 2618 Granulated slag (slag sand) from the manufacture of iron or steel. 9701 Paintings, drawings and pastels, executed entirely by hand, other than drawings of heading 4906 and other than hand-painted or hand-decorated manufactured articles; collages and similar decorative plaques
Ground granulated blast-furnace slag (GGBFS), sometimes simply referred to as "slag", is a glassy granular material formed when molten blast-furnace slag is rapidly chilled, as by immersion in water. It is a non-metallic product, consisting of silicates and aluminosilicates of
The use of slags in recycled aggregate concrete. Paul O. Awoyera, ... Oluwatobi G. Aluko, in The Structural Integrity of Recycled Aggregate Concrete Produced with Fillers and Pozzolans, 2022 7.2.3 Electric arc furnace slag. EAF is a by-product of oxidation of old steel during the production of steel in an EAF.
Molten slag, which is primarily generated in the blast furnace (BF) cohesive zone, trickles down through the coke packed bed in the form of films, rivulets, or droplets in the lower zone of the BF.
The composition of the blast furnace slag changes depending on the ores, the type of fuel used and impurities in the coke, when it is used, among other factors (Oner and Akyuz 2007). Slag from industries that use charcoal-fueled blast furnaces generally produce acidic slag while slag from coke-fired furnaces generate basic slag.
Steel furnace slag is mainly composed of a CaO(MgO)-Al 2 O 3 (Fe 2 O 3)-SiO 2 ternary system composed of elements such as calcium, magnesium, aluminum, iron, and silicon. The properties of the main chemical components are as follows [11], [12]:. 1. Fe 2 O 3 accounts for 10–20 % of the overall content. It is often an indispensable element …
Pyrometallurgical production of molten copper generates two slags, smelting and converting. Smelting furnace slag typically contains 1%–2% Cu.
Molten blast furnace slag, which is rapidly quenched from the furnace, air-cools slowly to form . Where this granulated slag is further processed or ground, the product is referred to as ground granulated blast furnace slag (GGBFS). Approximately 300kg of slag are produced for each tonne of iron. The furnace operates on a continuous daily basis ...
The areas of slag deposits are at a much lower temperature than the center of the furnace walls. Slag also is deposited in areas midway down the crucible lining, where insufficient metal turbulence from magnetic stirring occurs. Channel Furnaces: Another type of induction melting furnace is the channel furnace. The channel and the coreless ...
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, …
The CaO/SiO2 ratio and the MgO content of the blast furnace slag greatly influence its softening-melting properties. The availability of MgO later in the process often results in small temperature range of cohesive zone resulting in better permeability of the bed which in turn influences the coke consumption and quality of hot metal produced.
Ground granulated blast-furnace slag (GGBFS), sometimes simply referred to as "slag", is a glassy granular material formed when molten blast-furnace slag is rapidly chilled, as by …
Blast furnace slag (also called fine granulated blast furnace slag [GGBFS]) is a material that we call as one of the supplementary cementitious materials. Ground granulated blast furnace slag is the glassy material formed from molten slag produced in blast furnaces as an industrial by-product from the production of iron used in steelmaking.
resistance of slag, the current study is aimed to improve the compressive strength of concrete with reduced slag content by adopting novel mixing methodology. Notations GBS 2.5 2.5% weight of cement replacement by blast furnace slag GBS 5 5.0% weight of cement replacement by blast furnace slag GBS 10 10% weight of cement replacement …
The main components of furnace hearth slags are SiO 2, Al 2 O 3 and Fe 2 O 3. On the basis of the X-ray diffraction, it was found that the domination components of furnace hearth slags are mullite and …
Ground granulated blast furnace slag produced by pulverizing granulated blast furnace slag is mixed with Portland cement to produce Portland blast furnace slag cement. Portland blast furnace slag cement is economical and environmentally friendly because it conserves resources and energy, leading to reduction in CO 2 emissions.
The alkali-activated blast furnace slag is attracting significant attention in replacing Portland cement due to several characteristics similar to cement hydration. However, there are a few practical problems with commercial alkali activators, such as the fast setting time, relatively high costs, and significant CO2 emissions during preparation. …
Ground-granulated blast-furnace slag (GGBFS) is a by-product of iron and steel-making obtained by quenching molten iron slag from a blast furnace in water or steam. Used to increase the strength of concrete and used to improve workability of fresh concrete and reduce water demand, shrinkage and permeability of the finished product.
Geopolymers are novel binders from fly ash and ground granulated blast furnace slag. Data on self curing 'geopolymeric cement concretes' compressive strengths (20 to 75 MPa), stress-strain curves, bond strengths, corrosion, acid and sulphate resistances, thermal conductivity and expansion coefficients, electrical resistivity, ultrasonic pulse velocity, …
Blast furnace slag cement is the mixture of ordinary Portland cement and fine granulated blast furnace slag obtained as a by product in the manufacture of steel with percent under 70% to that of cement. Ground granulated blast furnace slag cement (GGBFS) is a fine glassy granules which contain cementatious properties.
1995: Slag wool furnace 2001: DC furnace for ilmenite smelting 2004: Rectangular copper slag cleaning furnace 2004: High capacity FeNi rectangular SAF with thyristor + copper cooling system 2006: DC slag cleaning unit for precious metals (PGM, Cu, Co, etc.) Figure 1 shows a typical submerged arc furnace from the 1950s, as it was promoted at ...
Introduction. China is the world's largest steel producer, with the China Iron and Steel Association estimating that the country's crude steel production in 2022 will be 935 million tonnes [Citation 1].Steel slag mainly refers to the blast furnace slag and converter slag produced in the process of iron making and steel making, and with the …
The molten slag and iron collect at the 'hearth' at the bottom of the furnace. The iron and slag are 'tapped' (removed) together at regular intervals, held in a trough to allow separation, then the slag is allowed to run into open air pits where it cools in layers. The cooling is facilitated by water spraying which causes the slag to ...
Further, the quality of metallic scrap and other iron-unit feed stocks has steadily deteriorated. The result: slag generation and slag-related melting problems have become widespread issues in recent …
Ladle furnace reducing slag is a common byproduct in steelmaking of carbon and low alloy steels. After air cooling and weathering over several days, this material is completely ground into fine white particles. Physical, chemical, and crystalline ...
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Calculations Relating to Concrete and Masonry. Sidney M. Levy, in Construction Calculations Manual, 2012 5.4.5 Ground Granulated Blast-Furnace Slag. Although portland blast-furnace slag cement, which is made by intergrinding the granulated slag with portland cement clinker (blended cement), has been used for more than 60 years, …
Abstract Fluorspar is added as a fluxing agent, to increase the solubility of basic compounds and maintain the fluidity of the slag in secondary steelmaking. In the present study, it was found that the composition of ladle furnace (LF) slag from silicon-killed steel falls in C2S zone in the ternary diagram of SiO2–CaO–Al2O3–MgO. This …
Ladle furnace slag has been investigated for use as cementitious materials (Omar et al., 2021) and fillers (Jiang et al., 2018) and in applications such as soil remediation (O'Connor et al., 2021), sludge treatment, and CO 2 sequestration (Zhang et al., 2022), and the utilization prospects of this slag have been expanded. However, the …
With the aim of utilizing blast furnace slag in the iron and steel industry at low cost, pollution free, refinement, and high value added, an entirely subversive technical route was presented, which was a novel synergistic utilization of slag to produce zeolite and hydrotalcite-like compounds. The object of this study is to obtain the optimal operating …
Blast furnace slag is a byproduct acquired in the production of pig iron in the blast furnace and is involving essentially of silicates and alumino-silicates of calcium and of other …
