Application of thermal analysis to study of phase composition changes in blast furnace sinters

1995 ◽  
Vol 45 (5) ◽  
pp. 937-945
Author(s):  
J. Orewczyk ◽  
S. Jasieńska ◽  
J. Pacyna ◽  
T. Skrzypek ◽  
S. Iwanczenko
Keyword(s):  
Thermal Analysis ◽  
Blast Furnace ◽  
Phase Composition ◽  
Composition Changes ◽  
Blast Furnace Sinters

Preparation and its Application Performance of Backfilling Cementation Material Based on Blast Furnace Slag

2011 ◽  
Vol 239-242 ◽  
pp. 2389-2394
Author(s):  
Shu Gang Hu ◽  
Hai Li Niu ◽  
Xian Jun Lu
Keyword(s):  
Blast Furnace ◽  
Phase Composition ◽  
Portland Cement ◽  
Blast Furnace Slag ◽  
Ordinary Portland Cement ◽  
Superior Performance ◽  
Application Performance ◽  
Potential Activity ◽  
Furnace Slag ◽  
Optimal Formula

The blast-furnace slag （BFS）has been characterized by chemical and phase composition to evaluate its hydration reactivity. It has high potential activity for its glassy structure, so its use to prepare new filling cementation material is possible. New backfilling cementation material composition has been formulated and optimized by activation of BFS. The optimal formula of new backfilling cementation material SL(Slag activated by lime) and SLG(Slag activated by lime and desulfurization gypsum) was 87% BFS, 13% lime and 78.4% BFS, 11.8% lime, 9.8% desulfurization gypsum respectively. Finally, the feature of application performance was analyzed through comparison between new cementation material and ordinary Portland cement with paste and sand mortar experiment. The result showed that material SL and SLG have superior performance to ordinary Portland cement used to mining cemented filling.

Phase composition changes due to coherency strains in a Ni-24 at.% V alloy

1996 ◽  
Vol 35 (5) ◽  
pp. 597-601 ◽  
Author(s):  
D.-K. Na ◽  
J.B. Cohen ◽  
P.W. Voorhees
Keyword(s):  
Phase Composition ◽  
Coherency Strains ◽  
Composition Changes

Phase composition changes due to ammonium-sulphate: attack on Portland and Portland fly ash cements

1999 ◽  
Vol 13 (3) ◽  
pp. 117-127 ◽  
Author(s):  
S. Miletić ◽  
M. Ilić ◽  
S. Otović ◽  
R. Folić ◽  
Y. Ivanov
Keyword(s):  
Phase Composition ◽  
Fly Ash ◽  
Ammonium Sulphate ◽  
Sulphate Attack ◽  
Composition Changes

scholarly journals Mechanical stress induced activity and phase composition changes in sulfated zirconia catalysts

2003 ◽  
Vol 217 (2) ◽  
pp. 487-490 ◽  
Author(s):  
Barbara S. Klose ◽  
Rolf E. Jentoft ◽  
Alexander Hahn ◽  
Thorsten Ressler ◽  
Jutta Kröhnert ◽  
...  
Keyword(s):  
Phase Composition ◽  
Mechanical Stress ◽  
Sulfated Zirconia ◽  
Sulfated Zirconia Catalysts ◽  
Composition Changes

Phase and Shape Evolution of CdS Nanocrystallites under Solvothermal Conditions

2011 ◽  
Vol 688 ◽  
pp. 195-200
Author(s):  
Gang Xu ◽  
Yan Fang Zhang ◽  
Yan Gang Zhao ◽  
Qing Qing Wang ◽  
Gao Rong Han
Keyword(s):  
Phase Composition ◽  
Phase Formation ◽  
Experimental Results ◽  
Shape Evolution ◽  
Product Phase ◽  
Evolution Mechanism ◽  
Zinc Blende ◽  
Composition Changes ◽  
Solvothermal Conditions

CdS nanocrystallites with different morphologies have solvothermally prepared with ethylenediamine (en) and glycol as solvents. Solvent-dependent experiments were carried out by adjusting the ratios of en/glycol to investigate the effects of the solvents on the product phase formation and morphology. It was found that the morphology of CdS nanocrystallite develops from a rough spherical nanoparticle to a rod-, twinrod-, and tetrapod-shaped nanoparticle by increasing the ratio of en/glycol, meanwhile the phase composition changes from coexistence of tetragonal zinc blende CdS and hexagonal wurtzite CdS to pure hexagonal wurtzite CdS. Based on the experimental results, a possible shape evolution mechanism of CdS nanocrystallites is simply discussed.

scholarly journals Application of X-Ray Diffraction to Study Mineralogical Dependence of Reduction: Disintegration Indices RDI of Blast Furnace Sinters

2021 ◽  
Author(s):  
Hanna Krztoń ◽  
Janusz Stecko
Keyword(s):  
Blast Furnace ◽  
Mineral Composition ◽  
Rietveld Method ◽  
Phase Identification ◽  
X Ray Diffraction ◽  
Static Susceptibility ◽  
X Ray ◽  
Mineral Components ◽  
Static Resistance ◽  
Blast Furnace Sinters

The aim of this research was to continue an examination of influence of mineral components of blast furnace sinters on their quality. Two of reduction-disintegration indices RDI were taken into account: static resistance to degradation RDI-1+6.3 and static susceptibility to degradation RDI-1-3.15. X-ray diffraction was used for phase identification and the Rietveld method was applied to study quantitative dependence. Static susceptibility to degradation RDI-1-3.15 showed clearly dependence on quantitative mineral composition, namely on quantities of magnetite, silicates and slag phases. Static resistance to degradation RDI-1+6.3 was also dependent on fractions of magnetite and silicates.

scholarly journals Processes of structure and phase formation of aerated concrete of non-autoclave hardening containing ferrosilicon as a gasifier

2021 ◽  
pp. 45-50
Author(s):  
A.O. Musina ◽  
◽  
O.O. Sihunov ◽  
O.P. Ryzhova ◽  
O.S. Sverdlikovska ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Differential Thermal Analysis ◽  
Phase Composition ◽  
Porous Structure ◽  
Dicalcium Silicate ◽  
X Ray ◽  
Calcium Hydrosilicates ◽  
Aerated Concrete ◽  
Differential Thermal Analysis Analysis ◽  
Ray Patterns

The paper deals with the structure and phase composition of non-autoclave aerated concrete with a density of 600–800 kg m–3 using ferrosilicon as a gasifier. The conditions of formation of porous structure of aerated concrete and preparation of calcium hydrosilicates were considered. Phase composition of the samples was investigated by means of X-ray phase analysis and differential thermal analysis. Analysis of X-ray patterns showed that the test samples contained tobermorite 11.3 Å (5CaO6SiO25.5H2O), xonotlite (6CaO6SiO2H2O) and -dicalcium silicate hydrate (2CaOSiO2H2O) as a binder. It was established that there is an increase in the content of hydrosilicate phases with an increase in the content of gasifier in the vast majority of cases. The obtained data were confirmed by the results of differential thermal analysis.

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