黄河流域沉沙池泥沙制备陶粒及其性能研究

doi:10.19964/j.issn.1006-4990.2021-0434

Abstract

Abstract:

Porous ceramsite was prepared by granulation and calcination process with the sediment of a desilting basin in the Yellow River Basin as the main raw material and pulverized coal as pore forming agent.The influence rule of the amount of coal powder，calcination temperature，calcination time，heating rate and preheating condition on the performance of the ceramsite samples was systematically studied.The crystal phase and microscopic morphology of the obtained ceramsite samples were also analyzed.The results showed that under the conditions：the mass ratio of sediment to pulverized coal of 9∶1，the calcination temperature of 1 125 ℃，the calcination time of 30 min，the heating rate of 20 ℃/min，the preheating temperature of 450 ℃ and the preheating time of 40 min，the sediment ceramsite samples with performance indexes meeting the requirements of the national standard could be prepared（bulk density of 879 kg/m³，water absorption of 5.9%，barrel pressure strength of 9.1 MPa）.The surface of the prepared ceramsite was porous，and the high?temperature solid?state reaction transformed the mica，calcite and other mineral phases in the sediment into quartz，feldspar and glass phase，so that the structure around the pores in the ceramsite was compact.

Key words: Yellow River sediment, ceramsite, high temperature sintering, comprehensive utilization

CLC Number:

TQ127.2

YANG Liyan,MA Xin,MEI Ruifeng,YANG Dashan,LIANG Jialin,LI Chunquan,SUN Zhiming. Study on preparation and performance of ceramsite from sediment in Yellow River desilting basin[J]. Inorganic Chemicals Industry, 2022, 54(5): 109-115.

Figures/Tables 16

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粒度级	粒径/μm	粒度级	粒径/μm
D₁₀	1.456	D₉₀	26.44
D₅₀	7.499	D₉₇	48.44

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Inorganic Acid-Base-Salt Committee of CIESC

Study on preparation and performance of ceramsite from sediment in Yellow River desilting basin

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