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Method for improving oxidation resistance of low-carbon magnesium-carbon material
The invention discloses a method for improving oxidation resistance of a low-carbon magnesium-carbon material, and belongs to the field of refractory materials. The method is characterized by comprising the following steps: firstly, adding the components according to a mass fraction ratio of sintered magnesia to crystalline flake graphite to phenolic resin to polycrystalline silicon waste of (82-88%): (4-7%): (2-6%): (4-8%), and fully mixing in a mixer; then, subjecting obtained ground and mixed raw materials to compression molding in a stainless steel mold; and finally, carrying out heat treatment at 180-200 DEG C for 10 hours to obtain a final product. In addition to low cost, the invention also has the advantage of obviously enhanced oxidation resistance. Si and SiC in the polycrystalline silicon waste respectively delay the oxidation of carbon and promote the formation of a magnesium oxide compact layer. The method can partially or completely replace antioxidants of carbon-containing refractory materials including magnesium-carbon materials, and has popularization value.
本发明公开了一种改善低碳镁碳材料抗氧化性的方法，属耐火材料领域。其特征在于，首先按质量分数比例烧结镁砂∶鳞片石墨∶酚醛树脂∶多晶硅废料=（82%~88%）∶（4%~7%）∶（2%~6%）∶（4%~8%）添加各组分并在混料机中充分混炼。接着，将磨混好的原料在不锈钢模具中压制成型。最后，在180~200℃下热处理10 h可得到最终制品。本发明除了成本低廉外，还具有抗氧化性增强明显的优点。多晶硅废料中的Si和SiC分别延缓了碳的氧化和促进了氧化镁致密层的形成。可部分或完全取代包括镁碳材料在内的含碳耐火材料的抗氧化剂，有推广价值。
Method for improving oxidation resistance of low-carbon magnesium-carbon material
The invention discloses a method for improving oxidation resistance of a low-carbon magnesium-carbon material, and belongs to the field of refractory materials. The method is characterized by comprising the following steps: firstly, adding the components according to a mass fraction ratio of sintered magnesia to crystalline flake graphite to phenolic resin to polycrystalline silicon waste of (82-88%): (4-7%): (2-6%): (4-8%), and fully mixing in a mixer; then, subjecting obtained ground and mixed raw materials to compression molding in a stainless steel mold; and finally, carrying out heat treatment at 180-200 DEG C for 10 hours to obtain a final product. In addition to low cost, the invention also has the advantage of obviously enhanced oxidation resistance. Si and SiC in the polycrystalline silicon waste respectively delay the oxidation of carbon and promote the formation of a magnesium oxide compact layer. The method can partially or completely replace antioxidants of carbon-containing refractory materials including magnesium-carbon materials, and has popularization value.
本发明公开了一种改善低碳镁碳材料抗氧化性的方法，属耐火材料领域。其特征在于，首先按质量分数比例烧结镁砂∶鳞片石墨∶酚醛树脂∶多晶硅废料=（82%~88%）∶（4%~7%）∶（2%~6%）∶（4%~8%）添加各组分并在混料机中充分混炼。接着，将磨混好的原料在不锈钢模具中压制成型。最后，在180~200℃下热处理10 h可得到最终制品。本发明除了成本低廉外，还具有抗氧化性增强明显的优点。多晶硅废料中的Si和SiC分别延缓了碳的氧化和促进了氧化镁致密层的形成。可部分或完全取代包括镁碳材料在内的含碳耐火材料的抗氧化剂，有推广价值。
Method for improving oxidation resistance of low-carbon magnesium-carbon material
一种改善低碳镁碳材料抗氧化性的方法
MA BEIYUE (author) / REN XINMING (author) / SHI MINGDONG (author) / GAO ZHI (author)
2020-06-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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