Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Magnesium-calcium metallurgical furnace cover castable and preparation method thereof
The invention discloses a magnesium-calcium metallurgical furnace cover castable and a preparation method thereof. The castable comprises the following components: 20-35 wt% of limestone particles; 20-40wt% of magnesium calcium sand particles; 5-15 wt% of quick lime particles; 10-18 wt% of magnesia fine powder; 2-8 wt% of magnesium oxide micro powder; 0.5-3 wt% of metal molybdenum powder; 1-6 wt% of metal aluminum powder; and 2-6 wt% of an alcohol mixture; the total amount of the components is 100wt%; and 0.1-0.2 wt% of a water reducing agent is additionally added. A compact layer-by-layer air hole structure is formed through hydration expansion of calcium oxide, hydration of metal aluminum powder, catalysis of molybdenum powder and alcohol decomposition gas reaction; and along with the rise of the baking temperature, calcium oxide in the quick lime and water vapor react more intensively to form calcium hydroxide, meanwhile, the quick lime and the metal aluminum powder jointly and gradually perform hydration reaction, and the structure is sintered layer by layer and does not crack.
本发明公开了一种镁钙质冶金炉盖浇注料及其制备方法。其组成按质量百分数计如下：石灰石颗粒20～35wt％；镁钙砂颗粒20～40wt％；生石灰颗粒5～15wt％；镁砂细粉10～18wt％；氧化镁微粉2～8wt％；金属钼粉0.5～3wt％；金属铝粉1～6wt％；醇类混合物2～6wt％；以上成分总量为100wt％；外加减水剂0.1～0.2wt％。本发明利用氧化钙的水化膨胀以及金属铝粉的水化、钼粉催化、醇类分解气体反应形成紧密逐层气孔结构；伴随烘烤温度的升高，生石灰中氧化钙和水蒸气反应更强烈，形成氢氧化钙，同时生石灰和金属铝粉共同逐步水化反应，结构逐层烧结致密度且不开裂。
Magnesium-calcium metallurgical furnace cover castable and preparation method thereof
The invention discloses a magnesium-calcium metallurgical furnace cover castable and a preparation method thereof. The castable comprises the following components: 20-35 wt% of limestone particles; 20-40wt% of magnesium calcium sand particles; 5-15 wt% of quick lime particles; 10-18 wt% of magnesia fine powder; 2-8 wt% of magnesium oxide micro powder; 0.5-3 wt% of metal molybdenum powder; 1-6 wt% of metal aluminum powder; and 2-6 wt% of an alcohol mixture; the total amount of the components is 100wt%; and 0.1-0.2 wt% of a water reducing agent is additionally added. A compact layer-by-layer air hole structure is formed through hydration expansion of calcium oxide, hydration of metal aluminum powder, catalysis of molybdenum powder and alcohol decomposition gas reaction; and along with the rise of the baking temperature, calcium oxide in the quick lime and water vapor react more intensively to form calcium hydroxide, meanwhile, the quick lime and the metal aluminum powder jointly and gradually perform hydration reaction, and the structure is sintered layer by layer and does not crack.
本发明公开了一种镁钙质冶金炉盖浇注料及其制备方法。其组成按质量百分数计如下：石灰石颗粒20～35wt％；镁钙砂颗粒20～40wt％；生石灰颗粒5～15wt％；镁砂细粉10～18wt％；氧化镁微粉2～8wt％；金属钼粉0.5～3wt％；金属铝粉1～6wt％；醇类混合物2～6wt％；以上成分总量为100wt％；外加减水剂0.1～0.2wt％。本发明利用氧化钙的水化膨胀以及金属铝粉的水化、钼粉催化、醇类分解气体反应形成紧密逐层气孔结构；伴随烘烤温度的升高，生石灰中氧化钙和水蒸气反应更强烈，形成氢氧化钙，同时生石灰和金属铝粉共同逐步水化反应，结构逐层烧结致密度且不开裂。
Magnesium-calcium metallurgical furnace cover castable and preparation method thereof
一种镁钙质冶金炉盖浇注料及其制备方法
XIAO ZHEDONG (Autor:in)
28.05.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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