Effects of Li2CO3 on Properties of Mould Flux for High Speed Continuous Casting

2011 ◽  
Vol 675-677 ◽  
pp. 877-880 ◽  
Author(s):  
Yan Qing Lu ◽  
Guo Dong Zhang ◽  
Mao Fa Jiang ◽  
Hai Xiao Liu ◽  
Ting Li
Keyword(s):  
Activation Energy ◽  
Surface Tension ◽  
Continuous Casting ◽  
Melting Temperature ◽  
High Speed ◽  
Mould Flux ◽  
Effective Role ◽  
Al2o3 Inclusion

The effects of Li2CO3 on melting temperature, viscosity, fluidity, surface tension and Al2O3 inclusion adsorption of mould flux for high speed continuous casting were studied. The results showed that with the increase of Li2CO3 content, melting temperature, viscosity and viscous activation energy of mould flux decreased obviously, fluidity increased, surface tension changed little, and Al2O3 inclusion adsorption of mould flux increased. In order to play an effective role, the Li2CO3 content should be less than 4 per cent. The results will play a guiding role in designing of mould flux for high speed continuous casting.

Effects of B2O3 on Properties of Low Fluoride Content Mould Flux for Thin Slab Continuous Casting

2011 ◽  
Vol 233-235 ◽  
pp. 805-808 ◽  
Author(s):  
Yan Qing Lu ◽  
Guo Dong Zhang ◽  
Mao Fa Jiang
Keyword(s):  
Activation Energy ◽  
Surface Tension ◽  
Continuous Casting ◽  
Melting Temperature ◽  
Fluoride Content ◽  
Thin Slab ◽  
Slab Continuous Casting ◽  
Mould Flux ◽  
Effective Role

In order to reduce fluorine pollution, partial fluoride could be replaced by B2O3 in mould flux. The effects of B2O3 on properties of low fluoride content mould flux for thin slab continuous casting were studied. The properties included melting temperature, viscous characteristics, fluidity, surface tension and Al2O3 inclusion adsorption. The results showed that with the increase of B2O3 content, melting temperature, viscosity, viscous activation energy and surface tension of mould flux decreased obviously, fluidity increased, and Al2O3 inclusion adsorption of mould flux changed little. The B2O3 could play effective role when its content was less than 6%. The results would play a guiding role in designing of low fluoride content mould flux for thin slab continuous casting.

Effects of Li2O on Properties of Low Fluoride Content Mould Flux for High Speed Continuous Casting

2011 ◽  
Vol 306-307 ◽  
pp. 1549-1552
Author(s):  
Yan Qing Lu ◽  
Guo Dong Zhang ◽  
Mao Fa Jiang
Keyword(s):  
Surface Tension ◽  
Continuous Casting ◽  
Melting Temperature ◽  
High Speed ◽  
Fluoride Content ◽  
Mould Flux ◽  
Effective Role

In order to reduce fluorine pollution, partial fluoride could be replaced by Li2O in mould flux. The effects of Li2O on properties of low fluoride content mould flux for high speed continuous casting were studied. The properties included melting temperature, viscosity, fluidity, surface tension and Al2O3 inclusion adsorption. The results showed that with the increase of Li2O content, melting temperature and viscosity of mould flux decreased obviously, fluidity increased, surface tension changed little, and Al2O3 inclusion adsorption of mould flux increased. In order to play an effective role, the appropriate Li2O content should be less than 4 per cent. The crystallization state of mould flux changed after slag adsorbed Al2O3. There were some small cuspidine and wollastonite crystals in the sample.

Effects of K2O on Properties of Low Fluoride Content Mould Flux for High Speed Continuous Casting

2011 ◽  
Vol 71-78 ◽  
pp. 2899-2902 ◽  
Author(s):  
Yan Qing Lu ◽  
Xing Fang ◽  
Guo Dong Zhang
Keyword(s):  
Surface Tension ◽  
Continuous Casting ◽  
Melting Temperature ◽  
High Speed ◽  
Fluoride Content ◽  
Mould Flux ◽  
Effective Role

In order to reduce fluorine pollution, partial fluoride could be replaced by K2O in mould flux. The effects of K2O on melting temperature, viscosity, fluidity, surface tension, Al2O3 inclusion and adsorption of low fluoride content mould flux for high speed continuous casting were studied. The results showed that with the increase of K2O content, melting temperature, viscosity and surface tension of mould flux decreased obviously, and fluidity and Al2O3 inclusion adsorption increased. When basicity was 0.81, 1.03 and 1.22, the suitable content of K2O was 5%, 5% and 4% respectively, which could play an effective role. Partial fluoride could be replaced by K2O in mould flux.

Effects of BaO on Properties of Low Fluoride Content Mould Flux for High Speed Continuous Casting

2011 ◽  
Vol 287-290 ◽  
pp. 1866-1870 ◽  
Author(s):  
Yan Qing Lu ◽  
Xing Fang ◽  
Guo Dong Zhang
Keyword(s):  
Surface Tension ◽  
Continuous Casting ◽  
Melting Temperature ◽  
High Speed ◽  
Great Influence ◽  
Fluoride Content ◽  
Crystallization Property ◽  
Mould Flux ◽  
Effective Role

In order to reduce fluorine pollution, partial fluoride could be replaced by BaO in mould flux. The effects of BaO on melting temperature, viscosity, fluidity, surface tension, Al2O3 inclusion and adsorption of low fluoride content mould flux for high speed continuous casting were studied, as well as the effect of basicity on crystallization property. The results showed that with the increase of BaO content, melting temperature, viscosity and surface tension of mould flux decreased obviously, and fluidity and Al2O3 inclusion adsorption increased. Partial fluoride could be replaced by BaO in mould flux. The BaO content should be less than 4 per cent so that it can play an effective role. The basicity had great influence on crystallization property.

Effects of NaF on Mould Flux Properties for Thin Slab Continuous Casting

2012 ◽  
Vol 455-456 ◽  
pp. 134-138 ◽  
Author(s):  
Yan Qing Lu ◽  
Guo Dong Zhang ◽  
Xiao Feng Yu
Keyword(s):  
Surface Tension ◽  
Continuous Casting ◽  
Melting Temperature ◽  
Thin Slab ◽  
Slab Continuous Casting ◽  
Mould Flux ◽  
Industrial Material ◽  
Synthetic Test ◽  
Effective Role ◽  
Al2o3 Inclusion

Using industrial material and synthetic test instrument for the physical characteristics of slag, the effects of NaF on melting temperature, viscosity, fluidity, surface tension and Al2O3 inclusion adsorption of mould flux for thin slab continuous casting were studied. The results showed that with the increase of NaF content, melting temperature, viscosity and surface tension decreased obviously, and fluidity and Al2O3 inclusion adsorption increased. The effects of basicity on properties should be taken into account. NaF could play effective role when its content was less than 9%. The results would play a guiding role in designing of mould flux for thin slab continuous casting.

The Mould Flux Viscosity Designing of High Carbon Steel for Thin Slab Continuous Casting

2014 ◽  
Vol 1022 ◽  
pp. 48-51
Author(s):  
Hui Rong Li ◽  
Li Gen Sun ◽  
Li Qun Ai
Keyword(s):  
Carbon Steel ◽  
Continuous Casting ◽  
Melting Temperature ◽  
Orthogonal Experiment ◽  
High Carbon Steel ◽  
Thin Slab ◽  
High Carbon ◽  
Slab Continuous Casting ◽  
Mould Flux

Viscosity is very important for the high carbon steel for thin slab continuous casting, in this research the orthogonal experiment has been carried out, and the results showed that: the effect for the flux viscosity form strong to weak is: R>F>BaO>Na2O>MgO. and in the experiment range, with the R increasing, when the R is between 0.80 and 0.90, the flux viscosity is diminished slowly; but when the R is bigger than 0.90, the flux viscosity is diminished sharply; Na2O,MgO and F- could decrease the flux viscosity; BaO could lower the melting temperature of the flux to decrease the flux viscosity.

scholarly journals Surface Thermodynamics, Viscosity, Activation Energy of N-Methyldiethanolamine Aqueous Solutions Promoted by Tetramethylammonium Arginate

Entropy ◽  
2020 ◽  
Vol 22 (12) ◽  
pp. 1337
Author(s):  
Xiangfeng Tian ◽  
Lemeng Wang ◽  
Pan Zhang ◽  
Dong Fu
Keyword(s):  
Activation Energy ◽  
Surface Tension ◽  
Diffusion Coefficient ◽  
Aqueous Solutions ◽  
Quantitative Relationship ◽  
Viscosity Data ◽  
Surface Thermodynamics ◽  
Surface Entropy ◽  
Operation Conditions ◽  
Surface Enthalpy

The surface tension and viscosity values of N-methyldiethanolamine (MDEA) aqueous solutions promoted by tetramethylammonium arginate ([N1111][Arg]) were measured and modeled. The experimental temperatures were 303.2 to 323.2 K. The mass fractions of MDEA (wMDEA) and [N1111][Arg] (w[N1111][Arg]) were 0.300 to 0.500 and 0.025 to 0.075, respectively. The measured surface tension and viscosity values were satisfactorily fitted to thermodynamic models. With the aid of experimentally viscosity data, the activation energy (Ea) and H2S diffusion coefficient (DH2S) of MDEA-[N1111][Arg] aqueous solution were deduced. The surface entropy and surface enthalpy of the solutions were calculated using the fitted model of the surface tension. The quantitative relationship between the calculated values (surface tension, surface entropy, surface enthalpy, viscosity, activation energy, and H2S diffusion coefficient) and the operation conditions (mass fraction and temperature) was demonstrated.

Sign in / Sign up

Export Citation Format

Share Document