Preparation and Characterization of Mullite Microcrystalline Ceramics from Panxi Iron Red Mud

Chen Dongli; Luo Qin

doi:10.3969/j.issn.1000-6532.2023.05.032

2023 No. 5

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Article navigation > Multipurpose Utilization of Mineral Resources > 2023 > 44(5): 204-210

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Chen Dongli, Luo Qin. Preparation and Characterization of Mullite Microcrystalline Ceramics from Panxi Iron Red Mud[J]. Multipurpose Utilization of Mineral Resources, 2023, 44(5): 204-210. doi: 10.3969/j.issn.1000-6532.2023.05.032

Citation:

Chen Dongli, Luo Qin. Preparation and Characterization of Mullite Microcrystalline Ceramics from Panxi Iron Red Mud[J]. Multipurpose Utilization of Mineral Resources, 2023, 44(5): 204-210. doi: 10.3969/j.issn.1000-6532.2023.05.032

Preparation and Characterization of Mullite Microcrystalline Ceramics from Panxi Iron Red Mud

Chen Dongli^1,,
Luo Qin²

1.
Panzhihua College, Panzhihua, Sichuan, China
2.
Key Laboratory of Comprehensive Utilization of Vanadium and Titanium Resources of Sichuan Province, Panzhihua, Sichuan, China

Received Date: 15 August 2022

Publish Date: 25 October 2023

Abstract

Abstract

This is an essay in the field of ceramics and composites. The microcrystalline ceramics were prepared by a one-step sintering method with kaolin and ferric red mud from Panzhihua, adding potassium feldspar as flux. The microcrystalline ceramics samples were characterized by X-ray diffractometer, Rockwell hardness tester, universal testing machine, electron microscope, thermogravimetric and thermal differential tests. The results show that: When kaolin content is 27%, potassium feldspar content is 25%, red mud content is 55%, sintering temperature is 1250 ℃, holding for 90 min, At this time, the water absorption rate of microcrystalline ceramics is 0.08%, the apparent porosity is 0.15%, the Rockwell hardness is 78.48 HRA, the bending strength is 51 MPa, the main crystal phase is mullite, the grain diameter is less than 6 μm, the grain content can reach 61.35%. The microcrystalline ceramics prepared by this process are dark red, smooth and bright in appearance, and have a warm and moist feeling of jade quality.
- Ceramics and composites /
- One-step sintering method /
- Microcrystalline ceramics /
- Mullite /
- Performance study /
- Grain size

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References

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