Cases

Home / of formation of blast furnace slag

of formation of blast furnace slag

2021-07-20T21:07:33+00:00
  • Phase Composition and Formation Mechanism of Slag

    a blast furnace body is one of the restrictive links of blast furnace longevity.4) In recent years, Chinese commercial blast furnaces have suffered a large amount of economic losses due to the damage of copper stave.5,6) The formation of slag crust on the cooling stave of a blast furnace playsThe blast furnace uses three sections copper stave as cooling equipment in the bosh, the belly and the lower part of the blast furnace body. During 14 years and 9 months operation of the blast furnace, the copper stave has been operated well without damage, and the shape of the copper Table 1. Main Operating Data before the blast furnace over ...Phase Composition and Formation Mechanism of Slag 2021-4-5  The damage of the copper stave will affect the sustainable production of the blast furnace and is not conducive to improving the economic efficiency of the blast furnace. The formation of a stable slag crust is crucial for the longevity of the copper stave. In this study, the flow properties and crystallization characteristics of the slag crust in a blast furnace with the copper stave running ...Investigation of Formation and Shedding Behavior of

  • (PDF) Phase Composition and Formation Mechanism

    Slag crusts on the cooling stave of a blast furnace offer greatly protection for the furnace wall. Frequent forming and shedding of slag crusts (FSSCs) cause severe erosion on the wall, which ...2017-2-6  Selection of basic slag formation injectant Possible fluxes to be injected into the blast furnace were considered to be burnt lime, burnt dolomite or BOF slag. Limestone or dolomite have a strong cooling effect on the raceway flame temperature, which would limit the injection rate of pulverized coal too much. The effect on tuyere slag formationImproved Slag Formation in the Blast Furnace by Co ...Blast furnace (BF) slags have been utilized in cement, concrete aggregate, roadbed materials, and earthwork materials. If an appropriate control of the elution and compound formation is developed under severer environmental conditions, their usage would be more diverse.The conditions of ettringite formation by the reaction

  • Hydrothermal solidification of blast furnace slag by ...

    Blast furnace water-cooled slag (BFWS) has been solidified using a hydrothermal processing method, in which the BFWS could be solidified in an autoclave under saturated steam pressure (1.56 MPa ...2007-10-1  Blast furnace water-cooled slag (BFWS) has been solidified using a hydrothermal processing method, in which the BFWS could be solidified in an autoclave under saturated steam pressure (1.56 MPa) at 200 °C for 12 h by the additions of quartz or coal flyash. The tensile strength development was shown to depend on the formation of tobermorite and the packing state of the formed tobermorite in ...Hydrothermal solidification of blast furnace slag by ...2017-2-6  some slag formation problems during test, e.g. high and variable resistance to gas flow in the blast furnace, very high viscous slag in the slag runner etc. Jitang Ma [4] has pointed out that the slag formation problem was caused by formation of an excessive basic slag at the cohesive zone, where the top-charged fluxes dissolved into theInfluence of Basic Fluxes on Slag Formation in a BF

  • Impact of chemical variability of ground granulated

    2016-11-1  1. Introduction. Ground granulated blast-furnace slag (GGBS) is an industrial by-product of steel manufacturing, and is widely used as a supplementary cementitious material () in concrete production to partially replace ordinary Portland cement (OPC) .The use of GGBS as a not only reduces the porosity of OPC concrete, via the precipitation of additional calcium-silicate-hydrate (C-S Corpus ID: 54033191. Optimisation of the slag formation in a blast furnace charged with 100% pellets @inproceedings{kvist2001OptimisationOT, title={Optimisation of the slag formation in a blast furnace charged with 100% pellets}, author={L. S. {\"O}kvist}, year={2001} }Optimisation of the slag formation in a blast furnace ...2020-1-22  Formation of C-S-H in calcium hydroxide–blast furnace slag–quartz–water system in autoclaving conditions Authors: Nourredine Arabi. x. Nourredine Arabi. for articles by this author. Professor, Laboratoire Matériaux Géomatériaux et Environnement, Université Badji Mokhtar Annaba, Annaba, Algeria ...Formation of C-S-H in calcium hydroxide–blast

  • Slag and its Role in Blast Furnace Ironmaking –

    2015-8-7  Slag formation is to be confined to a limited height of the blast furnace and the slag must be stable. The slag is to provide good permeability in the zone of slag formation. The melting point of the slag is to be neither too high nor too low. The final slag is to be fluid enough so that it is possible to drain it through tap hole,2020-4-6  Formation of Scaffold in Blast Furnace Shaft. satyendra; April 6, 2020; 0 Comments ; Alkalis, BF burden, blast furnace, Build up. BF volume, coke, refractories, Scaffolds, zinc,; Formation of Scaffold in Blast Furnace Shaft. The term scaffold is used when there is accretion or scab formation on the blast furnace (BF) wall which causes a decrease in the cross sectional area of the shaft of the BF.Formation of Scaffold in Blast Furnace Shaft – IspatGuruBlast furnace (BF) slags have been utilized in cement, concrete aggregate, roadbed materials, and earthwork materials. If an appropriate control of the elution and compound formation is developed under severer environmental conditions, their usage would be more diverse.The conditions of ettringite formation by the reaction

  • Investigation of the alkali uptake and slag formation in ...

    2017-2-6  The furnace has one tap hole, which is opened with a drill and closed with a mud gun. The hot metal and slag are tapped into a ladle without separation. To make dissection and repair easy, the hearth is detachable and can be separated from the furnace3, 4). Excavation The blast furnace was operated continuously in a campaign of eight weeks.2016-10-13  Formation for Blast Furnace Slag Cement . Toyoharu Nawa . Division of Sustainable Resources Engineering, Hokkaido University, JAPAN. mail: [email protected] ABSTRACT . Degree of hydration of cement minerals and BFS, amount of hydration products of pastes were determined by XRD/Rietveld method.Characterization and Modeling of Hydration and ...2021-5-21  Blast furnace ferronickel slag (BFFS) is generated in the production of ferronickel alloys and is used as cement replacement in concrete or mortar. The effectivity in reducing cement consumption and improving performance are limited. By referring to the paste replacement method, this work used BFFS to replace an equal volume of the white Portland cement paste to obtain greater performance ...Recycling Blast Furnace Ferronickel Slag as a

  • Dry Granulation of Blast Furnace Slag Steel360 News

    2019-4-4  A rotary-cup, air-blast atomizer was built, with a cup of 100mm diameter and a speed range of 500-1500 rev/min. The slag flow rates used in the tests varied from 0.2-0.5 kg/sec. The tests were restricted to duration of around 2.5min because of the limited capacity (around 30 kg) of the laboratory slag melting furnace.2020-10-2  What is Ground Granulated Blast Furnace Slag (GGBS)? The ground granulated blast furnace slag (GGBS) is a by-product of iron manufacturing which when added to concrete improves its properties such as workability, strength, and durability.. This material is obtained by the heating of the iron ore, limestone, and coke at a temperature of about 1500 o C. The process is carried out in a blast furnace.What is GGBS? Its Advantages and Disadvantages ...2013-6-12  The blast furnace slag should be a free-flowing one at the operating temperatures to ensure efficient slag–metal separation. It must have appreciable affinity for the gangue constituents to facilitate the production of metal of choice. Yet from the available heat (in the hearth) point of view,1 the blast furnace slag should be neither very ...Structural aspects of blast furnace slag

  • Ground Granulated Blast-Furnace Slag – JSW Cement

    Slag is a by-product from steel plants, which is obtained from blast furnaces, during the separation of iron from iron ore. The process involves cooling of the slag through high-pressure water jets, this leads to formation of granular particles.Effect of Coal and Coke Ash on Blast Furnace Slag Properties: A Comparison Between Pulverized Coal, Charcoal, Fossil-Based Coke, and Biocoke Anne Heikkilä,* Mikko Iljana, Eetu-Pekka Heikkinen, Aki Koskela, and Timo Fabritius 1. Introduction A blast furnace (BF) is the most common equipment for hot metal production in the world.Effect of Coal and Coke Ash on Blast Furnace Slag ...2019-4-4  A rotary-cup, air-blast atomizer was built, with a cup of 100mm diameter and a speed range of 500-1500 rev/min. The slag flow rates used in the tests varied from 0.2-0.5 kg/sec. The tests were restricted to duration of around 2.5min because of the limited capacity (around 30 kg) of the laboratory slag melting furnace.Dry Granulation of Blast Furnace Slag Steel360 News

  • Autogenous Deformation of Alkali-Activated Blast

    2019-4-28  K. Gong and C. E. White, “Impact of chemical variability of ground granulated blast-furnace slag on the phase formation in alkali-activated slag pastes,” Cement and Concrete Research, vol. 89, pp. 310–319, 2016. View at: Google Scholar2016-8-11  Hence the objective of this study is to incorporate other Pozzolanic materials in geopolymer concrete. In line with objective two Pozzolanic materials granulated blast furnace slag (GGBS) and rice husk ash (RHA) were used to replace flyash in geopolymer concrete.Ground Granulated Blast Furnace Slag (GGBS) and 2016-10-3  In this work, a new method for optimisation of blast furnace burdens was studied based on the primary slag formation behaviour because it has significant influence on the formation of the cohesive zone. The results showed that there was obvious interaction between sinter and acid iron ores at high temperature, and the primary slag formation ...Optimisation of the blast furnace burden based on its ...

  • What is GGBS? Its Advantages and Disadvantages ...

    2020-10-2  What is Ground Granulated Blast Furnace Slag (GGBS)? The ground granulated blast furnace slag (GGBS) is a by-product of iron manufacturing which when added to concrete improves its properties such as workability, strength, and durability.. This material is obtained by the heating of the iron ore, limestone, and coke at a temperature of about 1500 o C. The process is carried out in a blast furnace.The present work focuses on mineral reactions and slag formation of LKAB olivine iron ore pellets (MPBO) subjected to reducing conditions in the LKAB experimental blast furnace (EBF). The emphasis is on olivine reactions with surrounding iron oxides. Many factors influence the olivine behaviour.Mineral Reactions and Slag Formation During 2021-1-15  Melting features and viscosity of TiO2-containing primary slag in a blast furnace. High Temperature Materials and Processes, 2018, 37(2):149-156. (16) Jiao Kexin, Zhang Jianliang, Liu Zhengjian, Liu Yanxiang, Corrosion mechanism of carbon brick in the blast焦克新 - USTB