Effect of sintering behavior on the porous structure of porous quartz ceramics

2013 ◽  
Vol 104 (1) ◽  
pp. 93-98 ◽  
Author(s):  
Jieguang Song ◽  
Gangchang Ji ◽  
Shibin Li ◽  
Daming Du ◽  
Fang Wang
Keyword(s):  
Porous Structure ◽  
Sintering Behavior ◽  
Quartz Ceramics ◽  
Porous Quartz

Fabrication of Unfired Porous Quartz Brick Used the River Sands from the Yangtze River in China

2011 ◽  
Vol 418-420 ◽  
pp. 465-468
Author(s):  
Jie Guang Song ◽  
Fang Wang ◽  
Da Ming Du ◽  
Yang Liang Li ◽  
Gang Chang Ji
Keyword(s):  
Porous Structure ◽  
Compression Strength ◽  
Yangtze River ◽  
Homogeneous Distribution ◽  
Low Grade ◽  
The Yangtze River ◽  
Foaming Agent ◽  
Quartz Sands ◽  
Porous Quartz ◽  
Closed Pore

The insulating brick is prepared used low grade quartz sand along the Yangtze River, and the mechanism of porous structure contolment is researched, which lay technological foundation for increasing the performance of insulating brick. The results show the porosity of unfired porous quartz bricks is decreased with increasing the content of quartz sands. When the content of foaming agent is beyond 0.5%, the porosity of unfired porous bricks is increased with increasing the content of foaming agent. When the ratio of materials and water is above 1:1.1, the porosity of unfired porous bricks is decreased with increasing the content of adding water. Through optimizing the technology that using 60% quartz sands, 39% cement, 1% foaming agent and the ratio of materials and water for 1:1.1 are mixed, the unfired porous quartz bricks is produced, the density is 0.628 g/cm3, the porosity is 74.586% and the compression strength is 1.9 MPa, the porous structure of brick is homogeneous distribution, the pore is closed pore.

Influence of Sintering Temperature on the Properties of Porous Quartz Ceramics via the Atmospheric Pressure Sintering Method

2011 ◽  
Vol 415-417 ◽  
pp. 1009-1012
Author(s):  
Jie Guang Song ◽  
Fang Wang ◽  
Yin Yan Ju ◽  
Ming Han Xu ◽  
Shi Bin Li
Keyword(s):  
Atmospheric Pressure ◽  
Yangtze River ◽  
Sintering Temperature ◽  
Raw Material ◽  
Price Ratio ◽  
The Yangtze River ◽  
River Sand ◽  
Sintering Method ◽  
Quartz Ceramics ◽  
Porous Quartz

Porous quartz ceramics were produced using river sand from the Yangtze River in China as the raw material via the atmospheric pressure sintering method. The influence of the sintering temperature on the density, the porosity, the porous structure and the outside shape of ceramics were investigated in this paper.The conclusions show that the sintering temperature increased, the microstructure of the samples changed accordingly and the density increased, while the porosity decreased, the micropores edge gradually become smooth. The optimum sintering temperature of porous quartz ceramics was obtained at 1100 °C as determined by an analysis of the performance price ratio of the porous quartz ceramics, the density is 1.25g/cm3, the porosity is 49.5%, the outside shape is regular, the micropore edge are smooth.

PAPER PHYSICS. The web structure in relation to the furnish composition and shoe press pulse profiles during wet pressing

2012 ◽  
Vol 27 (4) ◽  
pp. 798-805 ◽  
Author(s):  
Collin Hii ◽  
Øyvind W. Gregersen ◽  
Gary Chinga-Carrasco ◽  
Øyvind Eriksen ◽  
Kai Toven
Keyword(s):  
Porous Structure ◽  
Peak Pressure ◽  
Pulse Length ◽  
Pressure Profile ◽  
Steam Consumption ◽  
Web Structure ◽  
Wet Pressing ◽  
Solids Content ◽  
In The Beginning ◽  
The Web

Abstract This study shows that wet-pressing TMP and DIP with a shoe press pulse may yield similar afterpress solids, provided that an adequate shoe pulse length with similar pressure profile is applied. A wet web with more porous structure in the sheet dewatering (felt) layer seems to contribute to the increased dewatering during wet pressing. In addition, a shoe press pulse with high peak pressure at the end yields higher solids content after wet-pressing and higher bulk compared to a pulse with a peak pressure in the beginning. The increased dewatering during wet-pressing implies a reduction of steam consumption in the dryer.

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