Title:
β-SIC-BOUND SIC REFRACTORY MATERIAL HAVING LOW BINDING PHASE CONTENT, PREPARATION METHOD THEREFOR AND PRODUCT THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/245791
Kind Code:
A1
Abstract:
Provided are a β-SiC-bound SiC refractory material having low binding phase content, a preparation method therefor and a product thereof, which relate to the technical field of refractory materials. The β-SiC-bound SiC refractory material having low binding phase content comprises a binding phase and a main phase. The binding phase is β-SiC, with mass content being 3% to 7%. The main phase is o-SiC, with mass content being 92% to 95%. The β-SiC binding phase covers the surface of the main phase in a nanowire morphology. The liquid high-viscosity organic matter used is both a carbon source and a binder. The addition amount and the actual carbon ratio of the high-viscosity organic matter can be adjusted to ensure the moldability of mud and the ignition loss in the firing process, thereby guaranteeing the density of a finished product. In the provided β-SiC-bonded SiC refractory material, the binding phase content is low, and the purity of silicon carbide can be as high as 96% or above. The preparation method is simple. The firing process is carried out in a low-temperature, micro-pressure and oxygen-free atmosphere, and has no environmental pollution and low energy consumption.
Inventors:
LV CHUNJIANG (CN)
HUANG ZHIGANG (CN)
LI JIE (CN)
ZHANG XINHUA (CN)
WU JIGUANG (CN)
WANG WENWU (CN)
CHANG CHENG (CN)
WANG JIANDONG (CN)
HUANG ZHIGANG (CN)
LI JIE (CN)
ZHANG XINHUA (CN)
WU JIGUANG (CN)
WANG WENWU (CN)
CHANG CHENG (CN)
WANG JIANDONG (CN)
Application Number:
PCT/CN2022/107064
Publication Date:
December 28, 2023
Filing Date:
July 21, 2022
Export Citation:
Assignee:
SINOSTEEL LUOYANG INST OF REFRACTORIES RES CO LTD (CN)
International Classes:
C04B35/56; C04B35/66; C04B35/565
Foreign References:
| CN101747068A | 2010-06-23 | |||
| CN108610071A | 2018-10-02 | |||
| JP2001019548A | 2001-01-23 | |||
| CN103880448A | 2014-06-25 | |||
| US4693988A | 1987-09-15 |
Other References:
ZHANG, TAO: "Effects of Hot Treat Temperatures on Preparation of β-SiC Bonded SiC Materials", NAIHUO CAILIAO - REFRACTORIES, GAI KAN BIANJIBU, LUOYANG, CN, vol. 50, no. 2, 30 April 2016 (2016-04-30), CN , pages 122 - 124, 135, XP009551283, ISSN: 1001-1935
Attorney, Agent or Firm:
BEIJING PROFESSIONAL INTELLECTUAL PROPERTY AGENCY LTD (CN)
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