Effect of sintering temperature on the structure of of a porous filter material

1984 ◽  
Vol 23 (3) ◽  
pp. 211-214
Author(s):  
L. E. Lunin ◽  
V. T. Bondar' ◽  
V. S. Pugin ◽  
P. A. Kornienko ◽  
N. P. Pavlenko
Keyword(s):  
Sintering Temperature ◽  
Filter Material ◽  
Porous Filter

The Preparation of Iron Ore Tailings Bio Ceramic Filter Material and Domestic Sewage Treatment

2014 ◽  
Vol 997 ◽  
pp. 877-881 ◽  
Author(s):  
Xiao Li Zhu ◽  
Jian Yuan Yu ◽  
Zhan Xing Wu ◽  
Lin Yao
Keyword(s):  
Fly Ash ◽  
Removal Efficiency ◽  
Iron Ore ◽  
Sintering Temperature ◽  
Filter Material ◽  
Domestic Sewage ◽  
Coal Gangue ◽  
Ceramic Filter ◽  
Ceramic Surface ◽  
Iron Ore Tailings

The experiment by iron ore tailings as the main raw material, add a small amount of fly ash, coal gangue, limestone and biological admixture, the preparation of iron ore tailings bio-ceramic filter material. The effect of the material proportion and sintering temperature and the ball size on the bio-ceramic filter material processing sewage pollutant removal efficiency was investigated. Research shows that the optimal proportion of bio-ceramic is: 86%iron ore tailings, 6% coal gangue, 4% fly ash, 3% limestone, 1% biological admixture. Under the condition of sintering temperature 1100 °C, bio-ceramic size 3 ~ 5 mm, the bio-ceramic filter material of COD removal efficiency 80% and turbidity of sewage 71% respectively. Through bio-ceramic filter material further analysis of XRD and SEM, in the sintering process of minerals such as sodium feldspar, quartz, hematite, together, make bio-ceramic has high strength. Internal porous bio-ceramic surface is rough at the same time, and the specific surface area is larger. Bio-ceramic has good adsorption performance, therefore, is helpful to remove the pollutant in the domestic sewage.

scholarly journals Some aspects of structure formation in sintering process between cuprum fibers and Zn

2019 ◽  
pp. 127-132
Author(s):  
V. G. Shcherbakou
Keyword(s):  
Structure Formation ◽  
Melting Temperature ◽  
Diffusion Layer ◽  
Powder Mixture ◽  
Sintering Temperature ◽  
Diffusion Saturation ◽  
Sintering Process ◽  
High Importance ◽  
Porous Filter ◽  
Filter Materials

The article reveals some aspects of structure formation between cuprum fibers and Zn in fluidized powder mixture. It was established that diffusion saturation of cuprum fibers with Zn leads to formation of diffusion layer with decreased melting temperature. The presence of high concentrated Zn zones on the top of the each separate fiber results in improved compactability and sintering temperature in that of high importance in production of porous filter materials.

scholarly journals A New Fe-C Porous Filter Material From Dredged Sediment: Preparation, Characterization, And Its Application

2021 ◽  
Author(s):  
Shuyi Chu ◽  
Qian Qu ◽  
Keke Pan ◽  
Yunjie Xu ◽  
Jibo Xiao
Keyword(s):  
Iron Powder ◽  
Average Pore Size ◽  
Filter Material ◽  
Raw Material ◽  
Bet Surface Area ◽  
Technological Condition ◽  
Component Ratio ◽  
Dredged Sediment ◽  
X Ray ◽  
Porous Filter

Abstract A new Fe-C porous filter material was prepared with dredged sediment of river as raw material. The orthogonal test L9(34) and component ratio experiment of raw material were conducted to investigate the optimum technological condition. Further, the filter obtained was characterized by Brunauer-Emmett-Teller (BET), scanning electron microscopy (SEM), energy dispersive X-ray spectroscope (EDS), and X-ray diffraction (XRD). Results showed that the optimal technological condition was sludge: straw: starch: iron powder: foam: iron powder 74.5∶10∶7.5∶3∶5, preheating temperature 280 ℃, preheating 15 min, sintering temperature 1080 ℃, and sintering 11 min. The BET surface area of the filter was 3.32 m2 g− 1, and average pore size was 10.05 nm. Phase composition mainly included SiO2, Fe3O4, Fe2O3 and muscovite (KAl2(Si3Al)O10(OH)2). Average effluent concentrations of total phosphorus (TP), total organic carbon (TOC), and total nitrogen (TN) of the biofilter system filled with the filter obtained were decreased to 0.08, 3.43, and 3.76 mg L− 1, separately, at hydraulic retention time 4 h. Thus, the filter prepared with dredged sediment of rive as raw material is an alternative material for polluted river water purification.

Electron Microscopy of Silicon Nitride-Based Ceramics

1991 ◽  
Vol 49 ◽  
pp. 926-927
Author(s):  
Gareth Thomas
Keyword(s):  
Electron Microscopy ◽  
High Temperature ◽  
Silicon Nitride ◽  
World Wide ◽  
Sintering Temperature ◽  
Liquid Phase Sintering ◽  
High Temperature Strength ◽  
Sintering Additives ◽  
Glass Forming ◽  
Dense Product

Silicon nitride and silicon nitride based-ceramics are now well known for their potential as hightemperature structural materials, e.g. in engines. However, as is the case for many ceramics, in order to produce a dense product, sintering additives are utilized which allow liquid-phase sintering to occur; but upon cooling from the sintering temperature residual intergranular phases are formed which can be deleterious to high-temperature strength and oxidation resistance, especially if these phases are nonviscous glasses. Many oxide sintering additives have been utilized in processing attempts world-wide to produce dense creep resistant components using Si3N4 but the problem of controlling intergranular phases requires an understanding of the glass forming and subsequent glass-crystalline transformations that can occur at the grain boundaries.

Synthesis and study the Structural and electrical and mechanical properties of High Temperature Superconductor Tl0.5Pb0.5Ba2Can-1Cun-xNixO2n+3-δ Substituted with nickel oxide for n=3

2018 ◽  
Vol 31 (3) ◽  
pp. 26 ◽  
Author(s):  
Laheeb. A. Mohammed ◽  
Kareem. A. Jasim
Keyword(s):  
Nickel Oxide ◽  
High Temperature Superconductor ◽  
Sintering Temperature ◽  
Concentration Effects ◽  
High Tc ◽  
Xrd Diffraction ◽  
Ni Content ◽  
High Tc Phase ◽  
Pure Phases ◽  
Critical Temperature Tc

   on this research is to study the effect of nickel oxide substitution on the pure phases superconductor Tl0.5Pb0.5Ba2Can-1Cun-xNixO2n+3-δ (n=3) where x=(0,0.2,0.4,0.6,0.8.and 1.0). The specimens in this work were prepared with used  procedure of solid state reaction with sintering temperature 8500C for 24 h .we used technical (4-prob)to calculated and the critical temperature Tc . The results of the XRD diffraction analysis showed that the structure for pure and doped phases was tetragonal with phases high-Tc phase (1223),(1212) and low-Tc phase (1202)  and add to the presence of some impure phase. It was noted the value a=b,c  the parameter of  the lattice increment  with the increment of Ni content. The increment of (NiO) concentration effects electrical resistivity, dielectric constant and the hardness.

Effect of spark plasma sintering temperature on structure and phase composition of Ti-Al-Nb-based alloys

2017 ◽  
Vol 59 (11-12) ◽  
pp. 1033-1036 ◽  
Author(s):  
Sherzod Kurbanbekov ◽  
Mazhyn Skakov ◽  
Viktor Baklanov ◽  
Batyrzhan Karakozov
Keyword(s):  
Phase Composition ◽  
Spark Plasma Sintering ◽  
Sintering Temperature ◽  
Plasma Sintering ◽  
Spark Plasma
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