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Preparation method of slag-corrosion-resistant low-carbon magnesia carbon brick for electric furnace
The invention discloses a preparation method of a slag-corrosion-resistant low-carbon magnesia carbon brick for an electric furnace, which comprises the following steps: putting fused magnesite into a mixer for dry mixing for 3-5 minutes, then adding phenolic resin accounting for two thirds of the total addition amount, mixing for 5-8 minutes, and then adding the fused magnesite into the mixer for dry mixing for 3-5 minutes, thereby obtaining the slag-corrosion-resistant low-carbon magnesia carbon brick for the electric furnace. And finally, aluminum oxide fine powder, nano carbon black, zirconium diboride powder, silicon carbide and the remaining phenolic resin are added and mixed for 8-10 min. The invention provides the low-carbon magnesia carbon brick with excellent slag corrosion resistance and oxidation resistance, magnesium oxide and aluminum oxide are subjected to in-situ reaction to generate spinel, the slag corrosion resistance of a refractory material is effectively improved, nano carbon black is used for replacing flaky graphite, the advantages of large specific surface area and high activity of nano carbon black are fully exerted, the carbon content is effectively reduced, and the production cost is reduced. Under the synergistic strengthening effect of silicon carbide and zirconium diboride, the mechanical property and oxidation resistance of the carbon composite refractory material are remarkably improved, meanwhile, good thermal shock resistance is kept, and the smelting requirements of clean steel, ultra-low carbon steel and stainless steel are met.
本发明公开了一种电炉用抗渣侵蚀的低碳镁碳砖制备方法，其制备方法包括以下步骤：将电熔镁砂放入混料机中干混3‑5min，然后加入总添加量三分之二的酚醛树脂，并混合5‑8min，最后加入三氧化二铝细粉、纳米炭黑、二硼化锆粉体、碳化硅以及剩余的酚醛树脂混合8‑10min。本发明提供了具有优良抗渣侵蚀、抗氧化性能的低碳镁碳砖，通过氧化镁与氧化铝原位反应生成尖晶石，有效提高了耐火材料的抗渣侵蚀能力，利用纳米炭黑替代鳞片状石墨，充分发挥其比表面积大、活性高的优势，有效降低了碳含量，在碳化硅和二硼化锆协同强化作用下，显著提高了碳复合耐火材料的力学性能和抗氧化性，同时保持了良好的热震稳定性，且满足洁净钢、超低碳钢和不锈钢的冶炼需求。
Preparation method of slag-corrosion-resistant low-carbon magnesia carbon brick for electric furnace
The invention discloses a preparation method of a slag-corrosion-resistant low-carbon magnesia carbon brick for an electric furnace, which comprises the following steps: putting fused magnesite into a mixer for dry mixing for 3-5 minutes, then adding phenolic resin accounting for two thirds of the total addition amount, mixing for 5-8 minutes, and then adding the fused magnesite into the mixer for dry mixing for 3-5 minutes, thereby obtaining the slag-corrosion-resistant low-carbon magnesia carbon brick for the electric furnace. And finally, aluminum oxide fine powder, nano carbon black, zirconium diboride powder, silicon carbide and the remaining phenolic resin are added and mixed for 8-10 min. The invention provides the low-carbon magnesia carbon brick with excellent slag corrosion resistance and oxidation resistance, magnesium oxide and aluminum oxide are subjected to in-situ reaction to generate spinel, the slag corrosion resistance of a refractory material is effectively improved, nano carbon black is used for replacing flaky graphite, the advantages of large specific surface area and high activity of nano carbon black are fully exerted, the carbon content is effectively reduced, and the production cost is reduced. Under the synergistic strengthening effect of silicon carbide and zirconium diboride, the mechanical property and oxidation resistance of the carbon composite refractory material are remarkably improved, meanwhile, good thermal shock resistance is kept, and the smelting requirements of clean steel, ultra-low carbon steel and stainless steel are met.
本发明公开了一种电炉用抗渣侵蚀的低碳镁碳砖制备方法，其制备方法包括以下步骤：将电熔镁砂放入混料机中干混3‑5min，然后加入总添加量三分之二的酚醛树脂，并混合5‑8min，最后加入三氧化二铝细粉、纳米炭黑、二硼化锆粉体、碳化硅以及剩余的酚醛树脂混合8‑10min。本发明提供了具有优良抗渣侵蚀、抗氧化性能的低碳镁碳砖，通过氧化镁与氧化铝原位反应生成尖晶石，有效提高了耐火材料的抗渣侵蚀能力，利用纳米炭黑替代鳞片状石墨，充分发挥其比表面积大、活性高的优势，有效降低了碳含量，在碳化硅和二硼化锆协同强化作用下，显著提高了碳复合耐火材料的力学性能和抗氧化性，同时保持了良好的热震稳定性，且满足洁净钢、超低碳钢和不锈钢的冶炼需求。
Preparation method of slag-corrosion-resistant low-carbon magnesia carbon brick for electric furnace
一种电炉用抗渣侵蚀的低碳镁碳砖制备方法
ZHAO JINGMING (Autor:in) / LUO XUDONG (Autor:in)
26.07.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
C21C
Weiterverarbeiten von Roheisen, z.B. Feinen, Herstellen von Schweißeisen oder Stahl
,
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL
/
F27D
Einzelheiten oder Zubehör für Industrieöfen, Schachtöfen, Brennöfen oder Retorten, soweit sie nicht auf eine Ofenart eingeschränkt sind
,
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
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