Preparation and characterization of porous ceramics with low-grade diatomite and oyster shell

被引：22
作者：
Hao, Liping [1 ]
Gao, Wenyuan [1 ]
Yan, Shuang [1 ]
Niu, Meihong [2 ]
Liu, Guishan [1 ]
Hao, Hongshun [1 ]
机构：
[1] Dalian Polytech Univ, Sch Text & Mat Engn, Dalian 116034, Peoples R China
[2] Dalian Polytech Univ, Sch Light Ind & Chem Engn, Dalian 116034, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2019年 / 235卷
关键词：
Low-grade diatomite; Oyster shell doped porous ceramics; Low-sintering temperature; FABRICATION; POWDER; MICROSTRUCTURE; ADSORBENTS; ADSORPTION; MONOLITHS; BRICK; ASH;
D O I：
10.1016/j.matchemphys.2019.121741
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Porous ceramics with the introduction of low-grade diatomite (LDE) and oyster shell (OS) were successfully fabricated via low-temperature sintering method. The micro-nano-sized OS powders were used as an excellent fluxing medium and pore-forming agent for ceramics. The physical and mechanical properties of porous ceramics were proved as a positive dependency with the mass ratio of OS powder and sintering temperature. When the mixing ratio of LDE and OS was selected as 70 wt% and 30 wt% and the sintering temperature was improved to 800 degrees C, the open porosity, bulk density and compressive strength were optimized to 50.20%, 1.26 g/cm(3) and 18.8 MPa, respectively. The porous ceramic with the best physical-mechanical property were almost 100% recycled LDE and could be used as building materials with good craftwork and environmental protection characteristics.
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页数：9
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