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Nano carbon-containing castable for blast furnace tapping channel and preparation method of nano-carbon-containing castable
The invention discloses a nano carbon-containing castable for a blast furnace tapping channel. The castable is prepared from 5-10% of special-grade high-aluminum clinker, brown fused alumina and whitefused alumina, compact corundum with the particle size of 1-0.15 mm and the granularity of 325 meshes, silicon carbide, silicon oxide micro-powder, alpha-Al2O3 micro-powder, pure calcium aluminate cement, dispersible nano carbon powder, an antioxidant, chopped carbon fibers, polyvinyl alcohol explosion-proof fibers and a water reducing agent, wherein the compact corundum of the 325-mesh fine powder is coated by the nano carbon film. The invention also discloses a preparation method of the castable. According to the castable, the compact corundum of the 325-mesh fine powder is coated by the nano carbon film, and the spherical asphalt is replaced by the dispersible nano carbon so that the carbon residue rate of a carbon source is increased, spherical asphalt thermal cracking holes and baking cracking pollution are avoided, the uniform dispersion condition of the nanocarbon in the castable and the contact probability and the contact area of the nanocarbon and refractory raw materials ofthe castable are improved, distribution of the nanocarbon in the castable is homogenized, and corrosion resistance, high temperature resistance and thermal shock resistance of the nanocarbon are enhanced.
本发明公开了一种含纳米碳的高炉出铁沟用浇注料。该浇注料由特级高铝熟料、棕刚玉、白刚玉5‑10％；1‑0.15mm粒度的和325目粒度的致密刚玉、碳化硅、氧化硅微粉、α‑AlO微粉、纯铝酸钙水泥、可分散性纳米碳粉、抗氧化剂、短切碳纤维、聚乙烯醇防爆纤维和减水剂组成，其中325目粒度的致密刚玉为纳米碳膜包括致密刚玉。本发明还公开了上述浇注料的制备方法。本发明通过纳米碳膜包覆325目细粉的致密刚玉及以可分散性纳米碳取代球状沥青，提高了碳源的残碳率、避免了球状沥青热裂解孔洞和烘烤裂解污染，改善了纳米碳在浇注料中的均匀分散状况及其与浇注料耐火原料的接触概率和接触面积，均化了浇注料中纳米碳的分布，强化了纳米碳的抗侵蚀、抗高温、抗热震性能。
Nano carbon-containing castable for blast furnace tapping channel and preparation method of nano-carbon-containing castable
The invention discloses a nano carbon-containing castable for a blast furnace tapping channel. The castable is prepared from 5-10% of special-grade high-aluminum clinker, brown fused alumina and whitefused alumina, compact corundum with the particle size of 1-0.15 mm and the granularity of 325 meshes, silicon carbide, silicon oxide micro-powder, alpha-Al2O3 micro-powder, pure calcium aluminate cement, dispersible nano carbon powder, an antioxidant, chopped carbon fibers, polyvinyl alcohol explosion-proof fibers and a water reducing agent, wherein the compact corundum of the 325-mesh fine powder is coated by the nano carbon film. The invention also discloses a preparation method of the castable. According to the castable, the compact corundum of the 325-mesh fine powder is coated by the nano carbon film, and the spherical asphalt is replaced by the dispersible nano carbon so that the carbon residue rate of a carbon source is increased, spherical asphalt thermal cracking holes and baking cracking pollution are avoided, the uniform dispersion condition of the nanocarbon in the castable and the contact probability and the contact area of the nanocarbon and refractory raw materials ofthe castable are improved, distribution of the nanocarbon in the castable is homogenized, and corrosion resistance, high temperature resistance and thermal shock resistance of the nanocarbon are enhanced.
本发明公开了一种含纳米碳的高炉出铁沟用浇注料。该浇注料由特级高铝熟料、棕刚玉、白刚玉5‑10％；1‑0.15mm粒度的和325目粒度的致密刚玉、碳化硅、氧化硅微粉、α‑AlO微粉、纯铝酸钙水泥、可分散性纳米碳粉、抗氧化剂、短切碳纤维、聚乙烯醇防爆纤维和减水剂组成，其中325目粒度的致密刚玉为纳米碳膜包括致密刚玉。本发明还公开了上述浇注料的制备方法。本发明通过纳米碳膜包覆325目细粉的致密刚玉及以可分散性纳米碳取代球状沥青，提高了碳源的残碳率、避免了球状沥青热裂解孔洞和烘烤裂解污染，改善了纳米碳在浇注料中的均匀分散状况及其与浇注料耐火原料的接触概率和接触面积，均化了浇注料中纳米碳的分布，强化了纳米碳的抗侵蚀、抗高温、抗热震性能。
Nano carbon-containing castable for blast furnace tapping channel and preparation method of nano-carbon-containing castable
含纳米碳的高炉出铁沟用浇注料及其制备方法
OUYANG DEGANG (author) / YANG XINQUAN (author) / LI MUYUN (author) / SHEN JISHENG (author) / ZHU WANJUN (author) / SUN WEI (author) / YANG CHENGWEI (author) / XIAO BANGZHI (author) / LIU HUA (author)
2020-09-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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