Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-calcium homogenized magnesia carbon brick and preparation method thereof
The invention discloses a high-calcium homogenized magnesia carbon brick and a preparation method thereof. The method is used for preparing a high-calcium fused magnesite brick. The high-calcium homogenized magnesia carbon brick is prepared from the following components in parts by mass: 800 to 900 parts of high-calcium fused magnesia, 10 to 80 parts of crystalline flake graphite, 30 to 40 parts of phenolic resin, 5 to 30 parts of antioxidant and 30 to 80 parts of an additive, wherein the additive is a mixture of calcium aluminate with a chemical formula of CaO.Al2O3 and calcium dialuminate with a chemical formula of CaO.2Al2O3, and the particle size of the mixture is 0.5 to 0.045 mm. According to a technical scheme in the invention, the preparation method comprises the following steps: crushing the fused magnesite, feeding the crushed fused magnesite into a closed material box, spraying water for wetting, conducting standing for 24 hours, performing drying, and conducting screening to obtain crushed fused magnesite with three granularities for later use; premixing the additive and the antioxidant for later use; mixing the sieved granular materials, the phenolic resin, the crystalline flake graphite and the premix; performing compression molding to obtain a green brick; and conducting drying. The problems that a low-carbon brick is low in thermal shock resistance and easy to peel off at high temperature and a magnesium-calcium-carbon brick is easy to hydrate are solved in the invention.
本发明公开了一种高钙均化镁碳砖及其制备方法，用于制备高钙电熔镁砖。按质量份，高钙电熔镁砂800‑900份、鳞片石墨10‑80份、酚醛树脂30‑40份、抗氧化剂5‑30份、添加剂30‑80份，所述添加剂为化学式CaO.Al2O3的一铝酸钙与化学式CaO.2Al2O3的二铝酸钙混合物，混合物的粒度为0.5‑0.045mm。制备方法采用的技术方案如下：首先将电熔镁砂破碎后送入密闭料箱喷水润湿静置24小时，然后干燥，筛分成三种粒度备用；取添加剂和抗氧化剂预混合后备用；将筛分的粒度料、酚醛树脂、鳞片石墨以及预混料混炼；压制成型为砖坯；进行干燥。解决了低碳砖热震稳定性低，高温易剥落和镁钙碳砖易水化的问题。
High-calcium homogenized magnesia carbon brick and preparation method thereof
The invention discloses a high-calcium homogenized magnesia carbon brick and a preparation method thereof. The method is used for preparing a high-calcium fused magnesite brick. The high-calcium homogenized magnesia carbon brick is prepared from the following components in parts by mass: 800 to 900 parts of high-calcium fused magnesia, 10 to 80 parts of crystalline flake graphite, 30 to 40 parts of phenolic resin, 5 to 30 parts of antioxidant and 30 to 80 parts of an additive, wherein the additive is a mixture of calcium aluminate with a chemical formula of CaO.Al2O3 and calcium dialuminate with a chemical formula of CaO.2Al2O3, and the particle size of the mixture is 0.5 to 0.045 mm. According to a technical scheme in the invention, the preparation method comprises the following steps: crushing the fused magnesite, feeding the crushed fused magnesite into a closed material box, spraying water for wetting, conducting standing for 24 hours, performing drying, and conducting screening to obtain crushed fused magnesite with three granularities for later use; premixing the additive and the antioxidant for later use; mixing the sieved granular materials, the phenolic resin, the crystalline flake graphite and the premix; performing compression molding to obtain a green brick; and conducting drying. The problems that a low-carbon brick is low in thermal shock resistance and easy to peel off at high temperature and a magnesium-calcium-carbon brick is easy to hydrate are solved in the invention.
本发明公开了一种高钙均化镁碳砖及其制备方法，用于制备高钙电熔镁砖。按质量份，高钙电熔镁砂800‑900份、鳞片石墨10‑80份、酚醛树脂30‑40份、抗氧化剂5‑30份、添加剂30‑80份，所述添加剂为化学式CaO.Al2O3的一铝酸钙与化学式CaO.2Al2O3的二铝酸钙混合物，混合物的粒度为0.5‑0.045mm。制备方法采用的技术方案如下：首先将电熔镁砂破碎后送入密闭料箱喷水润湿静置24小时，然后干燥，筛分成三种粒度备用；取添加剂和抗氧化剂预混合后备用；将筛分的粒度料、酚醛树脂、鳞片石墨以及预混料混炼；压制成型为砖坯；进行干燥。解决了低碳砖热震稳定性低，高温易剥落和镁钙碳砖易水化的问题。
High-calcium homogenized magnesia carbon brick and preparation method thereof
一种高钙均化镁碳砖及其制备方法
LI XIAOJIE (Autor:in) / TAN YANLEI (Autor:in) / YU HAIQIU (Autor:in) / SHI YANRU (Autor:in) / TAN PENG (Autor:in)
14.09.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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