Results 51 to 60 of about 116,318 (303)

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

Influence of Basicity and Calcium-Containing Substances on the Consolidation Mechanism of Fluxed Iron Ore Pellets

Metals, 2022
The application of fluxed pellets in iron making industry has attracted considerable attention because of the better metallurgical properties than acid pellets and environmental friendliness compared to sinters.
Kuo Liu, Feng Chen, Yufeng Guo, Yajing Liu, Shuai Wang, Lingzhi Yang   +5 more
doaj   +1 more source

Silicate weathering and carbon cycle controls on the Oligocene-Miocene transition glaciation [PDF]

, 2017
Changes in both silicate weathering rates and organic carbon burial have been proposed as drivers of the transient “Mi-1” glaciation event at the Oligocene-Miocene transition (OMT; ~23 Ma).
Algeo, Anand, Armstrong McKay, Arndt, Baar, Bainbridge, Baker, Barker, Beer, Beer, Bemis, Bemis, Boyle, Boyle, Boyle, Broecker, Burton, Burton, Channell, DeConto, Dekens, Delaney, Delaney, Delaney, Diester-Haass, Florindo, Galy, Garcia, Gasson, Green, Griffith, Hain, Hales, Hall, Hall, Hardie, Harrison, Hathorne, Havach, Henson, Heuser, Hinsbergen, Huh, Joseph A. Stewart, Katz, Kısakűrek, Kroopnick, Lea, Lea, Lear, Lear, Liebrand, Liebrand, Lippert, Locarnini, Lohmann, Lorens, Mangini, Marriott, Marriott, Mashiotta, Mawbey, McArthur, McCorkle, McManus, Meece, Merico, Miller, Misra, Morozov, Oliver, Oxburgh, Oxburgh, Pallavi Anand, Paul, Paul A. Wilson, Pearson, Peucker-Ehrenbrink, Peucker-Ehrenbrink, Pälike, Pälike, Rachael H. James, Ravizza, Raymo, Rickaby, Ripperger, Rosenthal, Rosenthal, Rosenthal, Rowley, Russell, Russell, Russell, Sexton, Shipboard Scientific Party, Smith, Stallard, Stewart, Stewart, Tachikawa, Takahashi, Thomson, Tyson, Veizer, Vigier, Walker, West, Zachos   +107 more
core   +3 more sources

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm, Jana Hubálková, Christian Schimpf, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +6 more
wiley   +1 more source

The Potential of Cassava Peel Waste as a Material of Biodegradable Plastic using Calcium Silicate Filler

Jurnal Teknik Kimia dan Lingkungan, 2023
Biodegradable plastics are plastics that can be degraded and decomposed quickly by microorganisms in the soil. In this study, biodegradable plastic was made with starch from cassava peel waste, sorbitol as a plasticizer, and calcium silicate as a filler.
Noor Isnaini Azkiya, S. Sigit Udjiana, Arya Rizqy Irangga, Anatasya Tania Febiyanti   +3 more
doaj   +1 more source

Thermophysical Properties of the Desulphurization Slags With Various CaS and CaO/Al2O3 Ratio

Advanced Engineering Materials, EarlyView.
This article investigates how CaS content and the CaO/Al2O3 ratio influence the thermophysical properties of desulphurization slags. Using experimental measurements and thermodynamic simulations, this study reveals complex effects on viscosity, surface tension, and density, providing new insight into slag structure and phase behavior under ...
Eldar Salpagarov, Matheus Roberto Bellé, Anton Yehorov, Julia Richter, Olena Volkova   +4 more
wiley   +1 more source

Cytotoxicity and Mineralization Activity of Calcium Silicate-Based Root Canal Sealers Compared to Conventional Resin-Based Sealer in Human Gingival Fibroblast Cells

International Journal of Dentistry, 2023
Background. Root canal obturation is performed by gutta-percha cones and sealer. Therefore, these materials, specially sealers, must be biocompatible.
Mohammad Shokrzadeh, Farzaneh Sadat Motafeghi, Anahita Lotfizadeh, Mohammad Ghorbani, Azam Haddadi Kohsar   +4 more
doaj   +1 more source

Lime stabilisation for earthworks: a UK perspective [PDF]

, 2014
Lime stabilisation is a versatile technique applied during earthworks operations. Modern soil recycling units are much more efficient at pulverising fill material and intermixing the added binder/water than machinery available 20 years ago.
Beetham P, Bell FG, Bergado DT, Bin S, Bohn HL, BSI, BSI, BSI, Davidson LK, Diamond S, Eades JE, Greaves HM, Highways Agency, Highways Agency, Highways Agency, Holt CC, Ingles OG, John Bateman, Longworth I, McAllister LD, Mitchell JK, Neil Dixon, Paul Beetham, Paul Fleming, Perry J, Petry TM, Reeves GM, Robert Hutchison, Rowell DL, Sherwood PT, Sherwood PT, Snedker EA, Stocker PT, Sweeney DA, Taylor HFW, Tom Dijkstra, Van Olphen H, Winter NB   +37 more
core   +2 more sources

Interaction of Ladle Slag With Varying SiO2 Content and Recyclate‐Based MgO–C Refractories

Advanced Engineering Materials, EarlyView.
Ladle slags (CaO/Al2O3 = 1) with 1–20 wt% SiO2 were investigated in contact with industrial MgO–C refractories fabricated from fresh magnesia and 50 wt% recyclate. The sessile drop method at 1600°C reveals intensive gas formation, delayed slag infiltration in recyclate‐based samples, and, under high‐SiO2 slag, formation of a dense MgAl2O4‐rich ...
Anton Yehorov, Eldar Salpagarov, Anhelina Mospan, Till Manon Jannis Stadtmüller, Thomas Schemmel, Christos Georgios Aneziris, Olena Volkova   +6 more
wiley   +1 more source

Fluorescence Properties and Synthesis of Green-Emitting Tb3+-Activated Amorphous Calcium Silicate Phosphor by Ultraviolet Irradiation of 378 nm

International Journal of Optics, 2012
The excitation wavelength of conventional Tb3+-activated phosphor is near 270 nm. This study describes novel green-emitting Tb3+-activated amorphous calcium silicate by ultraviolet excitation at 378 nm.
Yoshiyuki Kojima, Masaaki Numazawa, Shinnosuke Kamei, Nobuyuki Nishimiya   +3 more
doaj   +1 more source