نتایج جستجو برای: calcining temperature
تعداد نتایج: 453021 فیلتر نتایج به سال:
Základné vlastnosti sadrovca pre odsírenie spalín Several hundred thousand of FGD gypsum is produced annually at the Matra Power Plant (Hungary) as a byproduct of generating electricity and protecting the environment. Chemical and mechanical characteristics of this material were studied of the Department of Mining and Geotechnical Engineering, University of Miskolc (Hungary). The material in qu...
The high voltage spinel LiNi0.5Mn1.5O4 is a promising cathode material in next generation of lithium ion batteries. In this study, LiNi0.5Mn1.5O4 with various particle microstructures are prepared by controlling the microstructures of precursors. LiNi0.5Mn1.5O4 spinel samples with solid, hollow and hierarchical microstructures are prepared with solid MnCO3, hollow MnO2 and hierarchical Mn2O3 as...
the west of esfahan province, iran, is one of the most important agricultural areas throughout the country due to the climate variability and life-giving water of zayanderood river. rice is one of the major and economic crops in this area. the most important climatic elements in agricultural activities which should be considered include temperature, relative humidity, precipitation and wind. so...
Abstract In this paper, a new type of particle-modified fly ash composite material was prepared using as the main raw material, which could immobilize nitrogen and phosphorus pollutants in sediment control its release into water. Preliminary modification achieved by soaking NaOH calcining at high temperature CaO. The modified mixed with four auxiliary materials, namely cement, slag, water glass...
drought is transient phenomenon , slow , repetitive and integral part of the climate of each region. drought begins with a substantial reduction in precipitation over the long-term average rainfall and over time, reduced soil moisture and surface and ground water resources will continue to decrease. this phenomenon is the most important in bakhtegan basin because of its importance in strategic ...
V2O5 is used to substitute Ta2O5 site of the SrBi2Ta2O9 ceramics to form SrBi2Ta2-xVxO9 composition, where 0.1 x 0.4 ≦ ≦ . The sintering and the dielectric properties of SrBi2Ta2-xVxO9 ceramics have been developed. For all SrBi2Ta2-xVxO9 composition, the crystal intensities of the (0,0,l) planes increase with the increase of sintering temperature and saturate at 1050C-sintered ceramics, and the...
The doping element and morphology are important factors for improving the magnetic properties of M-type hexaferrite powder. As demand electromagnetic absorber sensors increases in market, it is required to develop powder with a homogenous shape excellent properties. In this study, Ca substituted strontium powders were synthesized by molten salt method under various calcination conditions. succe...
In this work, Ba1-xSiO3:xEu3+ and Ba0·84SiO3:0.08Eu3+,0.08Ln3+（Ln = La, Y or Gd）series phosphors are obtained by calcining the precursors pre-synthesized via chemical co-precipitation method. The XRD patterns demonstrate main phase is a chain silicate BaSiO3 formed (SiO3)2- groups Ba2+ ions with monoclinic crystal. Under monitoring of 616 nm emission, PLE spectra consist several peaks at 246 nm...
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