influence of gasinjection from tuyeres on slag formation in

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Influence of gasinjection from tuyeres on slag formation,

Download Citation | Influence of gasinjection from tuyeres on slag formation in blast furnace | Injecting hydrogen enriched gas through tuyeres, instead of coal injection, has great influence on,Influence of Gasinjection From Tuyeres on Slag Formation,,Influence of Gasinjection From Tuyeres on Slag Formation in Blast Furnace: LI Fumin 1, 2,L Qing 2,LI Xiubing 2: 1. School of Materials and Metallurgy, Northeastern University, Shenyang 110004, Liaoning, China; 2.Influence of Basic Fluxes on Slag Formation in a BF,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 the

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The Slag Formation Mechanism in a Melter-Gasifier for,

Finally, slag-bearing materials taken from the actual melter-gasifier through tuyeres were classified into partially melted DRI, residual slag and dripped slag. Then those samples were analyzed by using the same analysis techniques such as chemical analysis, SEM-EDS and XRD pattern analysis to confirm the slag formation mechanism inEffect of hydrogen addition on reduction behavior of iron,,Injecting hydrogen enriched gas through tuyeres, instead of coal injection, has great influence on slag formation in blast furnace. Slag formation in blast furnace with gas injection was studied,Effect of Charge Materials on Slag Formation in Ductile,,slag may also be generated by the charge materials used for the production of Ductile Iron castings. By knowing the impact of each charge material on slag formation, the foundryman can then include the cost related to slag formation in its economical analysis and optimize the

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Slag Splashing in a Basic Oxygen Furnace under Different,

tuyeres. The momentum of the nitrogen jets is transferred to the slag, which causes the slag to be stirred and ejected by the action of a standing wave and high shear forces, respectively. Three stages are present in the formation of the slag coating: 1) transport of molten slag to the converter walls,Slag Splashing in a Basic Oxygen Furnace under Different,,tuyeres. The momentum of the nitrogen jets is transferred to the slag, which causes the slag to be stirred and ejected by the action of a standing wave and high shear forces, respectively. Three stages are present in the formation of the slag coating: 1) transport of molten slag to the converter walls,Lena Sundqvist Ökvist and Guangqing Zuo SSAB, Tunnplåt AB,,EFFECT OF FLUXES ON SLAG FORMATION IN A BLAST FURNACE BY TOP CHARGING AND TUYERE INJECTION Lena Sundqvist Ökvist* and Guangqing Zuo** * SSAB, Tunnplåt AB, Luleå, Sweden ** Division of Process Metallurgy, Luleå University of Technology, Sweden; Synopsis: Based on a proposal for injecting fluxes into the blast furnace via tuyeres an evaluation of the influence

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Influence of the blast furnace’s operating conditions and,

The influence of the coke characteristics and blast-furnace conditions on the durability of air tuyeres is considered. The influence of the coke characteristics and blast-furnace,Protsessy vosstanovleniya i shlakoobrazovaniya v domennykh pechakh (Reduction and Slag Formation in Blast Furnaces), Moscow: Metallurgiya, 1982. Google Scholar; 4,Investigation of Titanium Compound Formation in the Blast,,through tuyeres. This practice augments titanium content in hot metal to promote the formation of a pro-tective layer on the hot face. This layer acts as an excellent insulator for refractory from erosion, thereby extending the refractory’s campaign life. TiO2 dissolved in the slag phase will react withSlag Splashing in a Basic Oxygen Furnace under Different,,The influence of three different blowing conditions on the slag splashing process in a basic oxygen furnace for steelmaking is analyzed here using two-dimensional transient Computational Fluid Dynamics simulations. Four blowing conditions are considered in the computer runs: top blowing, combined blowing using just a bottom centered nozzle, combined blowing using two bottom lateral nozzles,

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The Influence of the Tundish Powder on Steel Cleanliness,

The Influence of the Tundish Powder on Steel Cleanliness and Nozzle Clogging,The Wear of MgO-C Refractory for the BOF Stirring Plug With Multiple Tuyeres and the Tuyere Interaction. Yang, Q. / Bjoerkman, B. / Carlsson,,Mechanisms of Dust Formation in LD-Converter,Air-Slag-Matte Interaction in a Peirce-Smith Copper Converter,increased, the stirring and drop formation of slag is more evident, and from operational point of view, this conditions is favorable since the chemical reactions and heat transfer are enhanced. Fig. 3. Slag distribution inside of the copper converter as function of the air injection velocities. (a) 1, (b) 5, (c) 10, (d) 25, (e) 50 and (f) 100 m/s.Effect of coke properties on cupola furnace operation and,,and for melting slag and iron. To a good first approximation, this occurs in the immediate vicinity of the furnace tuyeres, where ambient or heated air (greater than 1000°C) reacts with hot coke to produce a temperature sufficient for furnace operation greater than 1400°C). Thus, to provide the maximum

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Proceedings of the Unified International Technical,

DANA G. GOSKI, PhD, is the Director of Research at Allied Mineral Products in Columbus, Ohio. Dr. Goski earned her PhD in Engineering from Dalhousie University, Canada. She is a member of The American Ceramic Society’s (ACerS) Refractories Division, a co-inventor on a number of international patents, and an ardent supporter of science and engineering educational outreach activities.ON THE ROLE OF FERROALLOYS IN STEELMAKING,alloying elements formation of microstructures and their properties can be controlled in much wider range. Alloying elements can act in several ways in steel. Common mechanisms are solid solution strengthening and precipitation hardening. The first one is based on the influence of substitutional atoms which causes stress field in the iron lattice.Investigation of Titanium Compound Formation in the Blast,,through tuyeres. This practice augments titanium content in hot metal to promote the formation of a pro-tective layer on the hot face. This layer acts as an excellent insulator for refractory from erosion, thereby extending the refractory’s campaign life. TiO2 dissolved in the slag phase will react with

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The Influence of the Tundish Powder on Steel Cleanliness,

The Influence of the Tundish Powder on Steel Cleanliness and Nozzle Clogging,The Wear of MgO-C Refractory for the BOF Stirring Plug With Multiple Tuyeres and the Tuyere Interaction. Yang, Q. / Bjoerkman, B. / Carlsson,,Mechanisms of Dust Formation in LD-Converter,Fluid Dynamics in a Teniente Type Copper Converter Model,,a Peirce-Smith copper converter and a slag furnace have beeninvestigatedbyBustosetal.[6].Theyhavefoundthat,Smith copper converter the influence of bath depth and tuyere submergence on the formation of standing waves on bath surface.Slag Splashing in a Basic Oxygen Furnace under Different,,The influence of three different blowing conditions on the slag splashing process in a basic oxygen furnace for steelmaking is analyzed here using two-dimensional transient Computational Fluid Dynamics simulations. Four blowing conditions are considered in the computer runs: top blowing, combined blowing using just a bottom centered nozzle, combined blowing using two bottom lateral nozzles,

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Mineralogical Characterization of Slags from Oiola Site,

influence the composition of the slag [17]. The air supplymechanism and the fuel to ore can be the most important features ratio providing the high temperature and a reducing atmosphere in the furnace. These conditions are necessary to reduce the iron minerals in the ore into a single mass and maintain a fluid slag…Computer Simulation of Slag Splashing in a Steelmaking,,Computer Simulation of Slag Splashing in a Steelmaking Converter Barron 1,[email protected] , [email protected] Abstract - Some variables that influence the slag splashing phenomenon in an oxygen steelmaking converter are,formation of the slag protective coating: transport of molten slag to the,Proceedings of the Unified International Technical,,DANA G. GOSKI, PhD, is the Director of Research at Allied Mineral Products in Columbus, Ohio. Dr. Goski earned her PhD in Engineering from Dalhousie University, Canada. She is a member of The American Ceramic Society’s (ACerS) Refractories Division, a co-inventor on a number of international patents, and an ardent supporter of science and engineering educational outreach activities.

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Effect of coke properties on cupola furnace operation and,

and for melting slag and iron. To a good first approximation, this occurs in the immediate vicinity of the furnace tuyeres, where ambient or heated air (greater than 1000°C) reacts with hot coke to produce a temperature sufficient for furnace operation greater than 1400°C). Thus, to provide the maximumON THE ROLE OF FERROALLOYS IN STEELMAKING,alloying elements formation of microstructures and their properties can be controlled in much wider range. Alloying elements can act in several ways in steel. Common mechanisms are solid solution strengthening and precipitation hardening. The first one is based on the influence of substitutional atoms which causes stress field in the iron lattice.A review of the production of ferromanganese in blast,Blast furnace Mn recovery Slag high basicity (upper limit: avoid 2CaO.SiO2 formation) high MgO% Al2O3 <15% to avoid MgO.Al2O3 formation High temperature where liquid metal and slag drip through coke (here most of the reduction occurs) sinter must have the required chemistry and a short range of softening temperature air blast must be injected at high temperature oxygen may be introduced,