| Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences | Host |
| Citation: |
ZHANG Tao, CHENG Feifei, KONG Jianjun, HU Mingwei, AN Weidong, HUANG Gongxu. Effect of Iron Content in Graphite Tailings from Luobei on Properties of Foamed Ceramics[J]. Conservation and Utilization of Mineral Resources, 2022, 42(6): 123-127. doi: 10.13779/j.cnki.issn1001-0076.2022.06.016
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Effect of Iron Content in Graphite Tailings from Luobei on Properties of Foamed Ceramics
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Abstract
This study focuses on reducing the iron content of graphite tailings through magnetic separation technology and investigating its effect on the properties of foamed ceramics. The results showed that the iron content in graphite tailings could be significantly reduced by magnetic separation processes. Specifically, the content of TFe2O3 in graphite tailings decreased from 6.37% to 2.18% when the content of −0.074 mm was 71.64%, the magnetic field induction was 0.8 T and the pulp density was 15%. Moreover, the appearance color of the foamed ceramics improved significantly, while the compressive strength increased from 7.2 MPa to 7.9 MPa, and the thermal conductivity increased from 0.33 W/(m·K) to 0.36 W/(m·K). After the magnetic separation process, the compressive strength of the foamed ceramics had been improved, and the thermal insulation performance had been reduced, but the overall performance remained largely unchanged.
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Keywords:
- graphite tailings /
- iron content /
- foamed ceramics /
- properties
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References
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ZHANG Tao, CHENG Feifei, KONG Jianjun, HU Mingwei, AN Weidong, HUANG Gongxu. Effect of Iron Content in Graphite Tailings from Luobei on Properties of Foamed Ceramics[J]. Conservation and Utilization of Mineral Resources, 2022, 42(6): 123-127. doi: 10.13779/j.cnki.issn1001-0076.2022.06.016
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Figure 1.
XRD pattern of graphite tailings
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Figure 2.
XRD pattern of graphite tailings magnetic separation products (a: Magnetic product; b: Non magnetic product)
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Figure 3.
Preparation process of foamed ceramics
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Figure 4.
Foamed ceramic samples prepared from graphite tailings without magnetic separation
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Figure 5.
Foamed ceramic samples prepared from graphite tailings after magnetic separation