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Magnesia carbon brick with high thermal shock resistance
The invention belongs to the field of metallurgical refractory materials, and particularly relates to a magnesia carbon brick with high thermal shock resistance in a VOD steel ladle mainly used for smelting high-quality stainless steel, and the magnesia carbon brick comprises the following components in parts by weight: 55-83 parts of 98 fused magnesite with a particle size of 5-8 mm; 13-25 parts of 97 fused magnesite with the particle size of 3-6 mm; 0.5-2.5 of -198 graphite with a particle size of more than or equal to 200 meshes and less than or equal to 300 meshes; 0.3-1.5 parts of boron carbide with a particle size of less than or equal to 0.072 mm; 0.2-0.9 of zirconium oxide with the particle size of less than or equal to 0.072 mm; 0.5 to 2.5 parts of carbon-containing resin powder; and 2.1 to 9.3 parts of phenolic resin. The magnesia carbon brick is high in thermal shock resistance, ideal in slag resistance, high-temperature strength, apparent porosity, oxidation resistance, erosion resistance and erosion scouring resistance and long in service life.
本发明属冶金耐火材料领域，尤其涉及一种主要应用于冶炼优质不锈钢的VOD钢包中高热震稳定性镁碳砖，以重量配比计，包括如下组份：粒度为5～8mm的98电熔镁砂55～83；粒度为3～6mm的97电熔镁砂13～25；200≤粒度≤300目的‑198石墨0.5～2.5；粒度≤0.072mm的碳化硼0.3～1.5；粒度≤0.072mm的氧化锆0.2～0.9；含碳树脂粉0.5～2.5；酚醛树脂2.1～9.3。本发明热震稳定性高，抗渣性、高温强度、显气孔率、抗氧化、抗侵蚀及抗侵蚀冲刷性理想，使用寿命长。
Magnesia carbon brick with high thermal shock resistance
The invention belongs to the field of metallurgical refractory materials, and particularly relates to a magnesia carbon brick with high thermal shock resistance in a VOD steel ladle mainly used for smelting high-quality stainless steel, and the magnesia carbon brick comprises the following components in parts by weight: 55-83 parts of 98 fused magnesite with a particle size of 5-8 mm; 13-25 parts of 97 fused magnesite with the particle size of 3-6 mm; 0.5-2.5 of -198 graphite with a particle size of more than or equal to 200 meshes and less than or equal to 300 meshes; 0.3-1.5 parts of boron carbide with a particle size of less than or equal to 0.072 mm; 0.2-0.9 of zirconium oxide with the particle size of less than or equal to 0.072 mm; 0.5 to 2.5 parts of carbon-containing resin powder; and 2.1 to 9.3 parts of phenolic resin. The magnesia carbon brick is high in thermal shock resistance, ideal in slag resistance, high-temperature strength, apparent porosity, oxidation resistance, erosion resistance and erosion scouring resistance and long in service life.
本发明属冶金耐火材料领域，尤其涉及一种主要应用于冶炼优质不锈钢的VOD钢包中高热震稳定性镁碳砖，以重量配比计，包括如下组份：粒度为5～8mm的98电熔镁砂55～83；粒度为3～6mm的97电熔镁砂13～25；200≤粒度≤300目的‑198石墨0.5～2.5；粒度≤0.072mm的碳化硼0.3～1.5；粒度≤0.072mm的氧化锆0.2～0.9；含碳树脂粉0.5～2.5；酚醛树脂2.1～9.3。本发明热震稳定性高，抗渣性、高温强度、显气孔率、抗氧化、抗侵蚀及抗侵蚀冲刷性理想，使用寿命长。
Magnesia carbon brick with high thermal shock resistance
高热震稳定性镁碳砖
CHEN XUEDONG (author) / YU LINHUI (author) / CHEN SHUCUN (author)
2021-05-07
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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