Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Refractory castable for A cover of main channel of blast furnace and preparation method of refractory castable
The invention relates to the field of refractory materials, in particular to a refractory castable for a blast furnace main channel A cover and a preparation method of the refractory castable. The refractory castable comprises 10 to 15 wt% of mullite particles with a particle size of 3 to 5 mm, 20 to 30 wt% of mullite particles with a particle size of 1 to 3 mm, 10 to 15 wt% of mullite particles with a particle size of 0.1 to 1 mm, 5 to 10 wt% of sintered alumina particles with a particle size of 1 to 3 mm, 10 to 20 wt% of mullite fine powder, 5 to 10 wt% of alumina micro powder, 3 to 5 wt% of silica micro powder, 5 to 10 wt% of CA71 cement fine powder, 1 to 3 wt% of aluminum powder, 3 to 5 wt% of silicon carbide fine powder and 1 to 2 wt% of steel fiber. According to the technical scheme, after aluminum powder and silicon carbide fine powder are added in the particle mixing process and evenly mixed, other premixed fine powder is added, steel fibers and water are additionally added, and the long-life refractory castable for the blast furnace main channel A cover is obtained after even stirring. The refractory castable aggregate for the long-life blast furnace main channel A cover prepared by the invention has the advantages of good connection degree with a matrix, high strength, excellent high-temperature stability and excellent thermal shock resistance, and the service life is generally doubled.
本发明涉及耐火材料领域，一种高炉主沟A盖用耐火浇注料及其制备方法，本耐火浇注料包括10‑15wt%的3‑5mm莫来石颗粒、20‑30wt%的1‑3mm莫来石颗粒、10‑15wt%的0.1‑1mm莫来石颗粒、5‑10wt%的1‑3mm烧结矾土颗粒、10‑20wt%的莫来石细粉、5‑10wt%的氧化铝微粉、3‑5wt%的二氧化硅微粉、5‑10wt%的CA71水泥细粉、1‑3wt%的铝粉、3‑5wt%的碳化硅细粉、1‑2wt%的钢纤维。技术方案为将颗粒混合过程中加入铝粉和碳化硅细粉混合均匀后，加入预先混的其它细粉，外加钢纤维和水搅拌均匀后即得长寿命高炉主沟A盖用耐火浇注料。本发明所制备的长寿命高炉主沟A盖用耐火浇注料骨料与基质衔接程度好，强度高，高温稳定性优良，热震稳定性优异，使用寿命普遍提升1倍。
Refractory castable for A cover of main channel of blast furnace and preparation method of refractory castable
The invention relates to the field of refractory materials, in particular to a refractory castable for a blast furnace main channel A cover and a preparation method of the refractory castable. The refractory castable comprises 10 to 15 wt% of mullite particles with a particle size of 3 to 5 mm, 20 to 30 wt% of mullite particles with a particle size of 1 to 3 mm, 10 to 15 wt% of mullite particles with a particle size of 0.1 to 1 mm, 5 to 10 wt% of sintered alumina particles with a particle size of 1 to 3 mm, 10 to 20 wt% of mullite fine powder, 5 to 10 wt% of alumina micro powder, 3 to 5 wt% of silica micro powder, 5 to 10 wt% of CA71 cement fine powder, 1 to 3 wt% of aluminum powder, 3 to 5 wt% of silicon carbide fine powder and 1 to 2 wt% of steel fiber. According to the technical scheme, after aluminum powder and silicon carbide fine powder are added in the particle mixing process and evenly mixed, other premixed fine powder is added, steel fibers and water are additionally added, and the long-life refractory castable for the blast furnace main channel A cover is obtained after even stirring. The refractory castable aggregate for the long-life blast furnace main channel A cover prepared by the invention has the advantages of good connection degree with a matrix, high strength, excellent high-temperature stability and excellent thermal shock resistance, and the service life is generally doubled.
本发明涉及耐火材料领域，一种高炉主沟A盖用耐火浇注料及其制备方法，本耐火浇注料包括10‑15wt%的3‑5mm莫来石颗粒、20‑30wt%的1‑3mm莫来石颗粒、10‑15wt%的0.1‑1mm莫来石颗粒、5‑10wt%的1‑3mm烧结矾土颗粒、10‑20wt%的莫来石细粉、5‑10wt%的氧化铝微粉、3‑5wt%的二氧化硅微粉、5‑10wt%的CA71水泥细粉、1‑3wt%的铝粉、3‑5wt%的碳化硅细粉、1‑2wt%的钢纤维。技术方案为将颗粒混合过程中加入铝粉和碳化硅细粉混合均匀后，加入预先混的其它细粉，外加钢纤维和水搅拌均匀后即得长寿命高炉主沟A盖用耐火浇注料。本发明所制备的长寿命高炉主沟A盖用耐火浇注料骨料与基质衔接程度好，强度高，高温稳定性优良，热震稳定性优异，使用寿命普遍提升1倍。
Refractory castable for A cover of main channel of blast furnace and preparation method of refractory castable
一种高炉主沟A盖用耐火浇注料及其制备方法
QI JIANGTAO (Autor:in) / LI ZHEN (Autor:in) / YI PU (Autor:in) / WANG ZHIJUN (Autor:in) / ZHAO JIALUN (Autor:in)
08.11.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2023