Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Machined carbon-free corundum spinel brick for ladles and preparation method thereof
The invention discloses a machined carbon-free corundum spinel brick for ladles, which comprises a solid raw material and water. The solid raw material comprises the following components in percentage by weight: 55-69% of microporous corundum, 15-25% of microporous corundum powder, 2-7% of rho-Al2O3 micropowder, 10-20% of synthetic spinel powder and 3-7% of magnesium aluminate. Water accounts for 1-3 wt% of the total solid raw material. The preparation method comprises the following steps: proportionally preparing the solid raw material, adding water, milling, forming in a brick press, and carrying out heat treatment at 150-250 DEG C for 12-36 hours. The machined carbon-free corundum spinel brick for ladles can not increase the carbon content in the molten steel or introduce harmful impurity component in the smelting process, and can reduce the temperature drop of the molten steel and perform the thermal-insulation function due to low thermal conductivity. The spinel brick has the characteristics of no pollution, high normal-temperature/high-temperature strength and high thermal shock stability, and can satisfy the production demands for low-carbon and ultralow-carbon steel.
Machined carbon-free corundum spinel brick for ladles and preparation method thereof
The invention discloses a machined carbon-free corundum spinel brick for ladles, which comprises a solid raw material and water. The solid raw material comprises the following components in percentage by weight: 55-69% of microporous corundum, 15-25% of microporous corundum powder, 2-7% of rho-Al2O3 micropowder, 10-20% of synthetic spinel powder and 3-7% of magnesium aluminate. Water accounts for 1-3 wt% of the total solid raw material. The preparation method comprises the following steps: proportionally preparing the solid raw material, adding water, milling, forming in a brick press, and carrying out heat treatment at 150-250 DEG C for 12-36 hours. The machined carbon-free corundum spinel brick for ladles can not increase the carbon content in the molten steel or introduce harmful impurity component in the smelting process, and can reduce the temperature drop of the molten steel and perform the thermal-insulation function due to low thermal conductivity. The spinel brick has the characteristics of no pollution, high normal-temperature/high-temperature strength and high thermal shock stability, and can satisfy the production demands for low-carbon and ultralow-carbon steel.
Machined carbon-free corundum spinel brick for ladles and preparation method thereof
CAI CHANGXIU (Autor:in) / TIAN XIANMING (Autor:in) / LEI ZHONGXING (Autor:in) / XU ZHIHUA (Autor:in) / QIN CHANGJIE (Autor:in) / YAO YASHUANG (Autor:in)
01.04.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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