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A platform for research: civil engineering, architecture and urbanism
Converter tapping hole composite pipe brick and preparation method thereof
The invention relates to a composite tubular brick for a tapping hole of a converter and a preparation method. The tubular brick is sequentially composed of an inner wall, a middle wall and an outer wall from inside to outside in the radial direction. The inner wall is prepared from the following raw materials: fused magnesite; magnesite clinker; silicon carbide powder; boric acid; the middle wall is prepared from the following raw materials: fused magnesite; crystalline flake graphite; a phenolic resin; the outer wall is prepared from the following raw materials: fused magnesite; crystalline flake graphite; silica powder; boron carbide; a phenolic resin; complexing a magnesium-aluminum cementing agent; and nano ceramic. The inner and outer three-layer structure is adopted, the volume density of the tubular brick is effectively improved through the outer wall, and the high-temperature strength of a sintered layer refractory material of the tubular brick is remarkably improved through the complexing magnesium-aluminum cementing agent and the nano ceramic; the middle wall adopts higher MgO content, so that the erosion resistance of the tubular brick is improved; silicon carbide powder, boric acid and fused magnesite are combined to form a protective layer on the inner wall, so that the durability is enhanced.
本发明涉及一种转炉出钢口复合管砖及制备方法，该管砖沿径向由内至外依次为内壁、中壁、外壁构成；内壁由以下原料制备而成：电熔镁砂；烧结镁砂；碳化硅粉；硼酸；中壁由以下原料制备而成：电熔镁砂；鳞片石墨；酚醛树脂；外壁由以下原料制备而成：电熔镁砂；鳞片石墨；硅微粉；碳化硼；酚醛树脂；络合镁铝胶结剂；纳米陶瓷。本发明采用内外3层结构，外壁有效提高了管砖的体积密度，采用络合镁铝胶结剂及纳米陶瓷，显著改善了管砖的烧结层耐材的高温强度；中壁采用较高MgO含量提高管砖的抗侵蚀性；内壁采用碳化硅粉、硼酸与电熔镁砂结合形成防护层，增强了耐用性。
Converter tapping hole composite pipe brick and preparation method thereof
The invention relates to a composite tubular brick for a tapping hole of a converter and a preparation method. The tubular brick is sequentially composed of an inner wall, a middle wall and an outer wall from inside to outside in the radial direction. The inner wall is prepared from the following raw materials: fused magnesite; magnesite clinker; silicon carbide powder; boric acid; the middle wall is prepared from the following raw materials: fused magnesite; crystalline flake graphite; a phenolic resin; the outer wall is prepared from the following raw materials: fused magnesite; crystalline flake graphite; silica powder; boron carbide; a phenolic resin; complexing a magnesium-aluminum cementing agent; and nano ceramic. The inner and outer three-layer structure is adopted, the volume density of the tubular brick is effectively improved through the outer wall, and the high-temperature strength of a sintered layer refractory material of the tubular brick is remarkably improved through the complexing magnesium-aluminum cementing agent and the nano ceramic; the middle wall adopts higher MgO content, so that the erosion resistance of the tubular brick is improved; silicon carbide powder, boric acid and fused magnesite are combined to form a protective layer on the inner wall, so that the durability is enhanced.
本发明涉及一种转炉出钢口复合管砖及制备方法，该管砖沿径向由内至外依次为内壁、中壁、外壁构成；内壁由以下原料制备而成：电熔镁砂；烧结镁砂；碳化硅粉；硼酸；中壁由以下原料制备而成：电熔镁砂；鳞片石墨；酚醛树脂；外壁由以下原料制备而成：电熔镁砂；鳞片石墨；硅微粉；碳化硼；酚醛树脂；络合镁铝胶结剂；纳米陶瓷。本发明采用内外3层结构，外壁有效提高了管砖的体积密度，采用络合镁铝胶结剂及纳米陶瓷，显著改善了管砖的烧结层耐材的高温强度；中壁采用较高MgO含量提高管砖的抗侵蚀性；内壁采用碳化硅粉、硼酸与电熔镁砂结合形成防护层，增强了耐用性。
Converter tapping hole composite pipe brick and preparation method thereof
一种转炉出钢口复合管砖及制备方法
CUI BO'AO (author) / ZHAO XIANHUA (author) / ZHANG YIXIAN (author) / MA JIALIANG (author) / JIN ZHAO (author) / GONG HUAZE (author) / TIAN LIANG (author)
2024-07-09
Patent
Electronic Resource
Chinese
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