Results 21 to 30 of about 7,842 (218)
Ceramics, 2020 The microstructure of a direct-bonded chromite-magnesia refractory brick, typically used in copper and platinum converters, was modified by adding different amounts of nano-size TiO2 to the raw material mixture.
Johan PR De Villiers +2 more
doaj +1 more source
Defence Technology, 2017 Composite solid propellant is prepared using tri-modal Ammonium perchlorate (AP) containing coarse, fine and ultrafine fractions of AP with average particle size (APS) 340, 40 and 5 μm respectively, in various compositions and their rheological ...
K.V. Suresh Babu +4 more
doaj +1 more source
Boletín de la Sociedad Española de Cerámica y Vidrio, 2020 The refractory used in the pyrometallurgical furnaces is periodically replaced because of wear. Refractory wear is determined by contact with the molten phases that interact with the refractory, in which chemical reactions are significant.
Ismael Pérez +4 more
doaj +1 more source
Mineral Resources Potential of Vietnam and Current State of Mining Activity
Applied Environmental Research, 2014 Vietnam, with an area of 331,210 km2, occupies the eastern side of the Indochina peninsula. It forms a narrow (locally only 40-70 km) band of land, extending over 1,500 km along the East Sea (South China Sea). Vietnam is constituted mainly by the folded
Nguyen Ngoc Khoi
doaj +7 more sources
Cu and Cu2In nanoparticles supported on amorphised zeolites for the selective reduction of biomass derived carboxylic acids to alcohols [PDF]
, 2012 Octanoic acid (OA) was used as reactant with medium chain length to model the aliphatic carboxylic acids which can be produced by catalytic, thermochemical or biological degradation of biomass. A flow through reactor was applied at 21 bar total pressure (
Beyer +17 more
core +1 more source
Production and Characterization of Magnesium‐Doped Copper Chromite Fibers
physica status solidi (a), 2017 In this study, Mg‐doped CuCr1−xMgxO2 (x = 0, 0.01, 0.03, 0.05) fibers are synthesized via electrospinning process followed by a two‐step heat treatment in air and Ar atmospheres. The produced samples are all crystalline with a fiber diameter ranging from 120 to 140 nm.
Ismail C. Kaya, Hasan Akyildiz
openaire +2 more sources
Mineral reconnaissance at the Highland boundary with special reference to the Loch Lomond and Aberfoyle areas [PDF]
, 1983 Serpentinite bodies at the Highland Boundary in the Loch Lomond and Aberfoyle areas are extensively altered to magnesite-quartz and ferroan-dolomite-quartz rocks. Silicification was probably initiated before conversion to carbonate.
Fortey, N.J. +3 more
core
Advanced Materials, EarlyView.The engineering of colloidal nanocrystals with complex compositions has emerged as a highly active area of research within nanomaterials science. This review covers key aspects of colloidal solid‐solution nanocrystal formation using pulsed laser irradiation.
Marina T. Candela +4 more
wiley +1 more source
Inverse Co-precipitation Synthesis of Copper Chromite Nanoparticles [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 2016 In this study, copper chromite (CuCr2O4) nanoparticles was prepared by inverse co-precipitation method. In this method, cupric nitrate trihydrate, (Cu (NO3)2.3H2O) and chromium nitrate nonahydrate, (Cr (NO3) 3.9H2O) with a mole ratio of 1:2 were used ...
Hassan Tavakoli +2 more
doaj
High performance ammonium nitrate propellant [PDF]
, 1979 A high performance propellant having greatly reduced hydrogen chloride emission is presented. It is comprised of: (1) a minor amount of hydrocarbon binder (10-15%), (2) at least 85% solids including ammonium nitrate as the primary oxidizer (about 40% to ...
Anderson, F. A.
core +1 more source