THE EFFECT OF ALUMINA IN FERROMANGANESE SLAG
tions including MnO content of final slag melting relations and slag viscosity. The slag composition is further expected to influence the process temperature. The properties of ferromanganese slags are suitably described by its basicity and A/S mass ratios. The influence of slag basicity has been discussed in the previous papers.
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Thermodynamic simulation on mineralogical composition
the influence of MgO content on the crystallization of mineralogical phases. Influence of basicity on mineralogical phases When Al 2 O 3 and MgO content were 13 and 9 respec-tively the mineralogical phases of slag with basicity of 1.0 1.1 1.2 and 1.3 under different temperature varied from 900 to 1600 °C with an increment of 5 °C have been
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High Alumina Slag and Blast Furnace OperationIspatGuru
May 27 2013 · The slag fluidity is affected by the temperature and composition of the slag with the latter influenced by ore gangue minerals and ash materials of coke and pulverized coal.
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Influence of refining slag composition on cleanness and
The influence of basicity and Al 2 O 3 content of LF refining slag on T. O (total oxygen) as well as type number and size of non-metallic inclusions in Al killed 60Si2MnA spring steel was investigated. The results showed that with the increase of slag basicity R(CaO/SiO 2) or the decrease of Al 2 O 3 content in slag the T. O number and size of non-metallic inclusions decreased significantly.
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Influence of slag composition on bearing steel cleanness
Influence of slag composition on bearing steel cleanness. results in the phase diagram by using the FactSage showed that the activity of Al 2 O 3 reached the minimum with the slag composition in a low melting point area at a MgO content less than 5 a basicity of 5 to 8 and a ratio of CaO/Al 2 O 3 of 1·5 to 2·0 in slag. This slag was
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The influence of different Nb/C ratio in Ni-base weld
3. 5 Slag Basicity and O-content . The basicity of the solidified slag was determined by the modified basicity index by Bauné et al. 20 28 in Eq. 1. Herewith a good correlation could be achieved between the O-content and the impact values of the all-weld metal from the flux-cored testing wires Alloy No. 11 12 13 see Table 9.
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OPTIMIZATION OF SLAG COMPOSITION IN HOT METAL
before the dephosphorization process and the slag of high basicity without foaming are imperative. The top slag composition is shown in Figure 2 (region a). As the high basicity and low Fe t O content the solid fraction of the slag is high. Hence it is necessary to add fluorspar to the slag in order to increase the liquid fraction.
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Influence of composition of slag and carbonaceous
The influence of liquid and solid composition on wetting has been discussed. The concept of a modified slag composition present at the slag/carbon interface during the interaction is introduced due to the presence of ash in the carbonaceous material. The wetting behaviour is found to be a function of the composition of this modified slag.
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"The influence of slag evolution on BOF dephosphorisation
During the second half of the oxygen blow (FeO) generation and lime dissolution improve the slag basicity and contribute to the transfer of phosphorus from metal to slag. Poor levels of phosphorus removal during the centre region of the blow were found to coincide with a
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Influence of Slag Basicity on the Silicon Within the
Liu Y. Lai P. Lv X. Bai C. (2016) Influence of Slag Basicity on the Silicon Within the Stainless Steel Master Alloy Prepared by Smelting Reduction of Fe-Ni-Cr Sinters. In Hwang JY. et al. (eds) 7th International Symposium on High-Temperature Metallurgical Processing.
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Influence of Slag Basicity on the Silicon Within the
Liu Y. Lai P. Lv X. Bai C. (2016) Influence of Slag Basicity on the Silicon Within the Stainless Steel Master Alloy Prepared by Smelting Reduction of Fe-Ni-Cr Sinters. In Hwang JY. et al. (eds) 7th International Symposium on High-Temperature Metallurgical Processing.
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THE SLAG COMPOSITION INFLUENCE ON THE
The aim of this study was to investigate existing slag system from practice and to define the optimal composition of the EAF slag in order to improve dephosphorization effectiveness and help to protect the EAF refractory lining. 2 Experimental methods The influence of the most important slag constituents (CaO MgO FeO MnO SiO 2 Al 2O3) on
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The influence of basicity and TiO2 on the crystallization
In the present study the phase composition of the high-titanium slag produced under different temperature and composition conditions under the HIsmelt smelting reduction process was first analyzed via thermodynamic calculations. An experimental scheme was further designed to study the influence of different factors on the crystallization
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Analysis of Slag Flow in Blast Furnace during the
Higher Than The Commonly Used Refining Slag. Higher Binary Basicity of The Slag Will Greatly Improve The Desulfurization Ability of The Cao–Al 2 O 3–SiO 2–TiO 2 Slag System. Compared With The Content of The Al 2 O 3 and TiO 2 The Change Of The Binary Basicity Is The Main Influencing Factor On The Sulfur Distribution Coefficient.
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Influence of Slag Basicity and Temperature on Fe and Mn
3.2. Influence of Slag Basicity on Fe Mn and Ca Distributions between Fe–Mn–Ca–O–S Matte and Molten Slag at 1673 K. Figure 6 shows the relation between the slag basicity and Fe Mn and Ca content in matte at 1673 K based on the values listed in Table 7. The Fe Mn and Ca content in the matte were linearly proportional to the slag
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A Study of EAF High-Chromium Stainless Steelmaking Slags
the slag basicity the slag may contain solid dicalcium silicate at the process temperatures. The evolution of the slag during the refining stage of the EAF was graphically illustrated in the calculated isothermal phase diagrams for the slag system Al
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Influence of composition of slag and carbonaceous
The influence of liquid and solid composition on wetting has been discussed. The concept of a modified slag composition present at the slag/carbon interface during the interaction is introduced due to the presence of ash in the carbonaceous material. The wetting behaviour is found to be a function of the composition of this modified slag.
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Influence of Slag Basicity on the Silicon Within the
Liu Y. Lai P. Lv X. Bai C. (2016) Influence of Slag Basicity on the Silicon Within the Stainless Steel Master Alloy Prepared by Smelting Reduction of Fe-Ni-Cr Sinters. In Hwang JY. et al. (eds) 7th International Symposium on High-Temperature Metallurgical Processing.
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(PDF) Basicity of metallurgical slags
The water vapor solubility in slag is proportional to the square root of the water vapor pressure in the gas phase and the hydroxyl capacity is only a function of temperature and the slag
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Slag Foaming FundamentalsA Critical Assessment
Basicity has a strong influence on the foaming both in the cases of acidic slag and basic slag because the basicity is directly related to slag viscosity (Figure 4). Figure 4 Influence of the CaO/ SiO 2 ratio on viscosity in a) acidic slag and b) basic slag.
Get PriceOPTIMALIZATION SLAG COMPOSITION IN LADLE
furnace slag into the ladle slag is necessary to calculate with some anomalies from optimal slag chemical composition for given steel however it is possible to adjust slag chemical composition near to optimal values. Significant influence for steel desulphurization has content of easily reducible oxides in slag.
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EFFECTS EXERTED BY SLAG CARRIED OVER FROM
KEYWORDS steel slag tapping temperature FeO in slag aluminum assimilation 1. Introduction In a previous paper 1 it was shown based mainly on theoretical considerations and simulation the influence on the chemical composition of the slag in the ladle due to some chemical compounds in the converter slag at some fixed ratios.
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The influence of uncontrolled disturbance actions on
The numerical values of the influence of scrap contamination the mixer slag ingress to the pig iron limestone instead of lime and water from the cooling elements on the decarbonization the bath temperature and the basicity of slag are given in the article. The results of obtained dependencies
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Influence of refining slag composition on cleanness and
The influence of basicity and Al 2 O 3 content of LF refining slag on T. O (total oxygen) as well as type number and size of non-metallic inclusions in Al killed 60Si2MnA spring steel was investigated. The results showed that with the increase of slag basicity R(CaO/SiO 2) or the decrease of Al 2 O 3 content in slag the T. O number and size of non-metallic inclusions decreased significantly.
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Journal Papers The influence of slag basicity and
The influence of slag basicity and composition on ConArc magnesia-carbon refractories during the blowing phase. AUTHOR A Muller. file v111n04p225.pdf description Journal Paper Vol 111No 04Pg 225. page 225. Add comment. Name (required) E-mail (required but will not display) Notify me of follow-up comments. Send
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Slag Evaluation to Reduce Energy Consumption and EAF
basicity value. If the slag shows low basicity it will be very fluid if it is extremely basic there will be an excess of solid particles hardening the slag and making it unlikely to foam 12. The energy consumed in the refining for the ranges that the chemical composition of FeO MgO and basicity presented higher number of heats is shown in
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Thermodynamics for the Influence of Slag Composition on
The composition of the inclusions were mainly equal to (MnO)/(SiO 2)=0.8(±0.06) (mole ratio) with various Al 2 O 3 content which increased by increasing the basicity of slag.
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Slag Evaluation to Reduce Energy Consumption and EAF
basicity value. If the slag shows low basicity it will be very fluid if it is extremely basic there will be an excess of solid particles hardening the slag and making it unlikely to foam 12. The energy consumed in the refining for the ranges that the chemical composition of FeO MgO and basicity presented higher number of heats is shown in
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INFLUENCE OF SLAG COMPOSITION AND CURING
This study investigated the influence of chemical composition of Ground Granulated Blast Furnace Slag (GGBS) and curing duration on the performance of slag-cement blends specifically strength and transport properties. Two slags (1 and 2) with Ca/Si ratios of 1.05 and 0.94 respectively were used to partially replace 30 of a CEM I 52.5R cement.
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High Alumina Slag and Blast Furnace OperationIspatGuru
May 27 2013 · The slag fluidity is affected by the temperature and composition of the slag with the latter influenced by ore gangue minerals and ash materials of coke and pulverized coal.
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