Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Unfired magnesia-calcium-carbon brick and preparation method thereof
The invention discloses an unfired magnesia-calcium-carbon brick which is prepared from the following raw materials in parts by weight: 60 to 100 parts of magnesia-calcium sand, 20 to 40 parts of fused magnesia, 5 to 10 parts of crystalline flake graphite, 3 to 8 parts of zirconium oxide micro powder, 3 to 8 parts of silicon carbide micro powder, 2 to 5 parts of phenolic resin and 2 to 5 parts of modified asphalt. The preparation method comprises the following steps: (1) weighing the raw materials; (2) carrying out dry mixing on magnesia-calcium sand, fused magnesia and zirconia micro powder, then adding phenolic resin and modified asphalt, carrying out wet mixing, then adding the crystalline flake graphite mixture, and finally adding the silicon carbide micro powder mixture; (3) pouring into a mold, pressurizing to form a blank, and baking; and (4) dipping with paraffin, and packaging by adopting double-layer plastic package. The unfired magnesia-calcium-carbon brick prepared by the preparation method is large in volume density, high in strength, difficult to hydrate and crack, strong in erosion resistance, good in high-temperature stability, difficult to peel off during use, long in service life and applicable to steel ladles of high-grade steel such as stainless steel, special steel and the like.
本发明公开了一种免烧镁钙碳砖，包括以下重量份的原料：镁钙砂60‑100份、电熔镁砂20‑40份、鳞片石墨5‑10份、氧化锆微粉3‑8份、碳化硅微粉3‑8份、酚醛树脂2‑5份和改性沥青2‑5份；制备方法：(1)称取各原料；(2)先将镁钙砂、电熔镁砂和氧化锆微粉干混，然后加入酚醛树脂和改性沥青湿混，再加入鳞片石墨混料，最后加入碳化硅微粉混料；(3)倒入模具，加压成坯，烘烤；(4)沾石蜡，采用双层塑封包装，即得。本发明制备得到的免烧镁钙碳砖体积密度大，强度高，且不易水化、开裂，抗侵蚀能力强，高温稳定性好，使用时不易出现剥落现象，使用寿命高，能适用于不锈钢、特钢等高级钢的钢包中。
Unfired magnesia-calcium-carbon brick and preparation method thereof
The invention discloses an unfired magnesia-calcium-carbon brick which is prepared from the following raw materials in parts by weight: 60 to 100 parts of magnesia-calcium sand, 20 to 40 parts of fused magnesia, 5 to 10 parts of crystalline flake graphite, 3 to 8 parts of zirconium oxide micro powder, 3 to 8 parts of silicon carbide micro powder, 2 to 5 parts of phenolic resin and 2 to 5 parts of modified asphalt. The preparation method comprises the following steps: (1) weighing the raw materials; (2) carrying out dry mixing on magnesia-calcium sand, fused magnesia and zirconia micro powder, then adding phenolic resin and modified asphalt, carrying out wet mixing, then adding the crystalline flake graphite mixture, and finally adding the silicon carbide micro powder mixture; (3) pouring into a mold, pressurizing to form a blank, and baking; and (4) dipping with paraffin, and packaging by adopting double-layer plastic package. The unfired magnesia-calcium-carbon brick prepared by the preparation method is large in volume density, high in strength, difficult to hydrate and crack, strong in erosion resistance, good in high-temperature stability, difficult to peel off during use, long in service life and applicable to steel ladles of high-grade steel such as stainless steel, special steel and the like.
本发明公开了一种免烧镁钙碳砖，包括以下重量份的原料：镁钙砂60‑100份、电熔镁砂20‑40份、鳞片石墨5‑10份、氧化锆微粉3‑8份、碳化硅微粉3‑8份、酚醛树脂2‑5份和改性沥青2‑5份；制备方法：(1)称取各原料；(2)先将镁钙砂、电熔镁砂和氧化锆微粉干混，然后加入酚醛树脂和改性沥青湿混，再加入鳞片石墨混料，最后加入碳化硅微粉混料；(3)倒入模具，加压成坯，烘烤；(4)沾石蜡，采用双层塑封包装，即得。本发明制备得到的免烧镁钙碳砖体积密度大，强度高，且不易水化、开裂，抗侵蚀能力强，高温稳定性好，使用时不易出现剥落现象，使用寿命高，能适用于不锈钢、特钢等高级钢的钢包中。
Unfired magnesia-calcium-carbon brick and preparation method thereof
一种免烧镁钙碳砖及其制备方法
LIANG CHUNLIAN (Autor:in) / LI GAOPING (Autor:in) / SHEN XIANGLI (Autor:in)
07.09.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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