Preparation of SiC Porous Ceramic for Application in Filter Plate Supports

Qi Fu Bao; Wei Xia Dong; Jian Er Zhou; Xiao Chun Hu

doi:10.4028/www.scientific.net/MSF.848.237

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Preparation of SiC Porous Ceramic for Application in Filter Plate Supports
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HomeMaterials Science ForumMaterials Science Forum Vol. 848Preparation of SiC Porous Ceramic for Application...

Preparation of SiC Porous Ceramic for Application in Filter Plate Supports

Abstract:

In order to improve the efficiency of solid-liquid separation, dewatering and filtration, as well as to reduce the loss of concentrate and production costs, silicon carbide porous ceramic filter plate with high porosity and high bending strength was prepared by using the particles close packing method adding proper amount of adhesives and sintering additives at 1450 ^oC. The porosity of the fired samples was evaluated by Archimedes law. The morphology and properties of the samples were characterized. Effects of SiC grains gradation, pore formers content, molding pressure and soaking time on the bending strength and porosity of ceramic filter plate was studied. SiC porous ceramic composition was prepared by mixing 90wt% and 10wt% SiC powders with D₅₀of 200.7 μm and 312.6 μm, respectively, 4% walnut powder as pore former and 5% Kaolin clay as binder. The sample was pressured at 8 MPa and fired at 1450 ^oC for 30 min, and endowed with 6-8 μm of the average pore diameter, 41% of the porosity and 11 MPa of the bending strength, respectively, which is especially not easy to plug hole. The obtained results can be applied in ceramic filter core parts for heavy metal concentration.

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Periodical:

Materials Science Forum (Volume 848)

Pages:

237-242

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.848.237

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Online since:

March 2016

Authors:

Qi Fu Bao, Wei Xia Dong*, Jian Er Zhou, Xiao Chun Hu

Keywords:

Bending Strength, Filter Plate Supports, Porosity, Porous Ceramic, SiC

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References

[1] Takayuki Fukasawa, Motohide Ando, Synthesis of porous ceramics with complex pore structure by freeze dry processing. Journal of the American Ceramic Society. 84(2001) 230-232.

DOI: 10.1111/j.1151-2916.2001.tb00638.x

Google Scholar

[2] O. U. Omatete, M. A. Janney, Gelcasting, A new ceramic forming process, American Ceramic Society Bulletin. 70(1991) 1641-1650.

Google Scholar

[3] K. Sugiyama, Preparation of low density free standing shape of SiC by pressure pulsed chemical vapor infilt ration, Journal of Materials Science Letters. 14, (1995) 1720-1726.

DOI: 10.1007/bf00422686

Google Scholar

[4] Y. Zhang, Microstructures and mechanical properties of silicon nitride bonded silicon carbide ceramic foams, Materials Research Bulletin. 39 (2004) 755-761.

DOI: 10.1016/j.materresbull.2004.02.004

Google Scholar