Results 21 to 30 of about 111 (90)

In Situ Analysis of Opal in Gale Crater, Mars

Journal of Geophysical Research: Planets, Volume 123, Issue 8, Page 1955-1972, August 2018., 2018
Abstract Silica enrichments resulting in up to ~90 wt% SiO2 have been observed by the Curiosity rover's instruments in Gale crater, Mars, within the Murray and Stimson formations. Samples acquired by the rover drill revealed a significant abundance of an X‐ray amorphous silica phase.
W. Rapin, B. Chauviré, T. S. J. Gabriel, A. C. McAdam, B. L. Ehlmann, C. Hardgrove, P.‐Y. Meslin, B. Rondeau, E. Dehouck, H. B. Franz, N. Mangold, S. J. Chipera, R. C. Wiens, J. Frydenvang, S. Schröder   +14 more
wiley   +1 more source

Practical assessment of grinding capacity and power consumption based on Hardgrove grindability index and coal characteristics [PDF]

Thermal Science, 2019
This paper analyzes the effects of coal grindability and its characteristics on the grinding capacity and power consumption for beater wheel mill during exploitation in thermal power plant TENT B in Obrenovac, Serbia. For this purpose, experiments were made on the mill, before and after its reconstruction.
Marko Obradovic, Dejan Radic, Dusan Todorovic, Aleksandar Jovovic, Nikola Karlicic, Miroslav Stanojevic   +5 more
openaire   +2 more sources

Effects of Maceral Compositions of Coal on Methane Adsorption Heat

Geofluids, Volume 2018, Issue 1, 2018., 2018
The role of maceral compositions (vitrinite and inertinite) in the adsorption characteristics of coal has not been fully understood in terms of energy. In this study, using a microcalorimeter, the adsorption heat of maceral compositions for methane is directly measured for five groups of Chinese coal samples with different coal ranks.
Yingke Liu, Jianhong Kang, Fubao Zhou, Yanming Fan, Haijian Li, Egor Dontsov   +5 more
wiley   +1 more source

Characterization of Some Nigerian Coals for Power Generation

Journal of Combustion, Volume 2016, Issue 1, 2016., 2016
Five coal samples from Odagbo (Kogi State), Owukpa (Benue State), Ezimo (Enugu State), Amansiodo (Enugu State), and Inyi (Enugu State) of Nigerian coal deposits were subjected to proximate analysis, ultimate analysis, calorific value determination, and petrographic and thermogravimetric analysis to determine their suitability for power generation ...
M. Chukwu, C. O. Folayan, G. Y. Pam, D. O. Obada, Kalyan Annamalai   +4 more
wiley   +1 more source

Multivariable Regression and Adaptive Neurofuzzy Inference System Predictions of Ash Fusion Temperatures Using Ash Chemical Composition of US Coals

Journal of Fuels, Volume 2014, Issue 1, 2014., 2014
In this study, the effects of ratios of dolomite, base/acid, silica, SiO2/Al2O3, and Fe2O3/CaO, base and acid oxides, and 11 oxides (SiO2, Al2O3, CaO, MgO, MnO, Na2O, K2O, Fe2O3, TiO2, P2O5, and SO3) on ash fusion temperatures for 1040 US coal samples from 12 states were evaluated using regression and adaptive neurofuzzy inference system (ANFIS ...
Shahab Karimi, Esmaeil Jorjani, Saeed Chehreh Chelgani, Shahin Mesroghli, Kaustubha Mohanty   +4 more
wiley   +1 more source

Pengaruh dan Korelasi Analisis Proksimat (MAD, VM, Ash dan FC) Terhadap Nilai Hardgrove Grindability Index (HGI) Batubara di PT. Bukit Asam, Tbk. Effect and Correlation of Proximate Analysis (MAD, VM, Ash and FC) on the Hardgrove Grindability Index (HGI)

Jurnal Ilmiah Teknik dan Sains, 2023
Batubara merupakan salah satu bahan bakar yang bersumber dari hidrokarbon berbentuk padat. Analisis proximate memberikan informasi penting bagi perusahaan tambang atau PLTU terkait dengan kualitas bahan bakar yang akan digunakan. HGI merupakan tolak ukur secara laboratorium dari mudah atau sulitnya batubara digerus atau di pulverizing.
Astrid Fadhilah, null Ah Mirul
openaire   +1 more source

Physical Characteristics and Technology of Glass Foam from Waste Cathode Ray Tube Glass

Journal of Materials, Volume 2013, Issue 1, 2013., 2013
This paper deals with the laboratory investigation of cathode‐ray‐tube‐ (CRT‐) glass‐based glass foam, the so‐called “Geofil‐Bubbles” which can be applied in many fields, mainly in the construction industry (lightweight concrete aggregate, thermal and sound insulation, etc.).
G. Mucsi, B. Csőke, M. Kertész, L. Hoffmann, John W. Gillespie   +4 more
wiley   +1 more source

Relationship between Particle Size Distribution of Low‐Rank Pulverized Coal and Power Plant Performance

Journal of Combustion, Volume 2012, Issue 1, 2012., 2012
The impact of particle size distribution (PSD) of pulverized, low rank high volatile content Alaska coal on combustion related power plant performance was studied in a series of field scale tests. Performance was gauged through efficiency (ratio of megawatt generated to energy consumed as coal), emissions (SO2, NOx, CO), and carbon content of ash (fly ...
Rajive Ganguli, Sukumar Bandopadhyay, Kalyan Annamalai   +2 more
wiley   +1 more source

Studi Pengaruh Biomassa Bahan Bakar Jumputan Padat (BBJP) pada Proses Co-firing di PLTU

Jurnal Elkomika
ABSTRAK Untuk mereduksi emisi Gas Rumah Kaca (GRK), Pemerintah Indonesia mengajukan kebijakan untuk mengaplikasikan teknologi berbasis Energi Terbarukan (EBT) di PT PLN (Persero) dengan menerapkan co-firing di PLTU batubara.
MOCHAMAD ZAINUDIN ADE ARTA, WIDAYAT WIDAYAT, MUCHAMMAD MUCHAMMAD   +2 more
doaj   +1 more source

Toward Fossil‐Free Steelmaking: Overview of Physiochemical Properties of Hydrochar and Its Application in Blast Furnace and Electric Arc Furnace Processes

cScience, Volume 1, Issue 1, December 2025.
ABSTRACT The steel industry is among one of the largest CO2 emitters in the world. To meet climate targets, replacing fossil‐based carbon with renewable biocarbon in metallurgical processes, particularly in blast furnaces (BFs) and electric arc furnaces (EAFs), has emerged as a viable short‐ to mid‐term solution.
Yu‐Chiao Lu, Wang Liang, Andrey Karasev, Guangwei Wang, Chuan Wang   +4 more
wiley   +1 more source