نتایج جستجو برای: titanomagnetite
تعداد نتایج: 205 فیلتر نتایج به سال:
• High strength pellets were obtained using organic and inorganic binder combination. Maximum green was with 65 μm ironsand 0.1 wt% binder. Calcium-bearing binders increase sintered by forming liquid bonding phases. Direct reduction (DR) of iron ore hydrogen is a potential route for near-zero CO 2 steelmaking, but vertical shaft DR reactors require that fines must first be pelletized. This stud...
Abstract This study aimed to investigate the effect of MgO and titanomagnetite mixture on high-temperature pyrolysis radiata pine wood in a fluidised bed reactor at 850 °C. The catalytic performance MgO-titanomagnetite (MgO-TM) was experimentally evaluated based product distribution, gas composition, properties, tar composition. results revealed that addition resulted decrease yield (67.2 wt.%)...
This paper provides the results on spinel sampled from ailikites of Bolshetagninskii massif East Sayan region. The study aimed to determine history formation ultramafic lamprophyres Ziminsky complex. Spinel three dikes with different mineral compositions groundmass but similar textural and structural features (BTG 2/21, TGK 3, BTG 6/21) was analyzed. content main elements microcomponents in det...
Caldera-forming eruptions are among the most hazardous natural events on Earth and pose a significant risk for global consequences in future. Recent petrological re-evaluations of pre-, syn-, post-caldera deposits several volcanic systems worldwide suggest cyclic behavior evolution subvolcanic reservoirs feeding these eruptions. Such caldera cycles usually subdivided into maturation, fermentati...
Experimental insight into basaltic andesite lava dome oxidation textures at La Soufrière, St Vincent
Abstract Petrological analysis of the 2020–21 La Soufrière lava dome reveals ubiquitous oxidation textures. Comparison natural rock to subsequent explosive scoria phases highlights lack any features in latter, indicating that processes affected only dome-forming magma, either during pre-eruptive storage or upon emplacement. To investigate causes we present a series one-atmosphere experiments, u...
Many of the particles currently suspended in the martian atmosphere are magnetic, with an average saturation magnetization of about 4 A. m2/kg (amperes times square meters per kilogram). The particles appear to consist of claylike aggregates stained or cemented with ferric oxide (Fe2O3); at least some of the stain and cement is probably maghemite (gamma-Fe2O3). The presence of the gamma phase w...
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