Preparation and Properties of Foamed Ceramics from Fly Ash

Abstract

Abstract: In the face of increasingly scarce ceramic raw materials, the use of solid waste to prepare foamed ceramics has become an inevitable trend. The fly ash was used as the main raw material to study the effects of chromium slag content, cullet content and grinding process on fly ash foamed ceramics. The results show that the properties of fly ash foamed ceramics are improved by adding appropriate amount of chromium slag, and small amount of cullet has little effect on the properties of fly ash foamed ceramics. When the ratio of raw materials is m(fly ash)∶m(chromium slag)∶m(feldspar)∶m(cullet)=60∶10∶20∶10, the foamed ceramics with average pore diameter of 0.64 mm, bulk density of 368.54 kg/m³ and compressive strength of 8.11 MPa is prepared by wet grinding for 3 h.

Key words: fly ash, foamed ceramics, chromium slag, cullet, grinding process

CLC Number:

TQ174

ZHOU Mingkai, LIU Jianfeng, GE Xuexiang, LI Zhenyu. Preparation and Properties of Foamed Ceramics from Fly Ash[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(2): 605-609.

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