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Chrome corundum material and production method thereof
The invention discloses a chrome corundum material which comprises the following components in percentage by mass: 6%-15% of Al2O3, 85%-90% of Cr2O3 and 3%-5% of ZrO2. The production method comprisesthe steps of uniformly mixing the raw materials including chromium oxide green, aluminum oxide, compact zirconium oxide and aluminum fluoride; smelting at high temperature; conducting cooling; and crushing, granulating and screening out the chrome corundum material. According to the invention, the added compact zirconium oxide, aluminum oxide and chromium oxide green are smelted and cooled in an electric arc furnace to form a solid solution of ZrO2, Al2O3 and Cr2O3. Compared with a traditional high-chromium brick made of fused chromium oxide, white corundum, zirconium oxide and the like, the situation that ZrO2 cannot form a continuous solid solution with Al2O3 and Cr2O3, the crystalline phase of ZrO2 changes in the temperature changing process, and the quality of refractory products is affected is avoided.
本发明公开了一种铬刚玉料包括Al2O3、Cr2O3和ZrO2，Al2O3的质量百分比为6％～15％，Cr2O3的质量百分比为85％～90％，ZrO2的质量百分比为3％～5％。生产方法包括以下步骤：取原材料氧化铬绿、氧化铝、致密氧化锆和氟化铝均匀混合；高温熔炼；降温冷却；破碎制粒筛出铬刚玉料。本发明采用加入的致密氧化锆与氧化铝、氧化铬绿在电弧炉中熔炼冷却，形成ZrO2、Al2O3、Cr2O3的固溶体；与传统的电熔氧化铬、白刚玉和氧化锆等制成的高铬砖相比，避免ZrO2无法与Al2O3、Cr2O3形成连续的固溶体，ZrO2在温度变化过程中晶相变化，影响耐火产品的质量。
Chrome corundum material and production method thereof
The invention discloses a chrome corundum material which comprises the following components in percentage by mass: 6%-15% of Al2O3, 85%-90% of Cr2O3 and 3%-5% of ZrO2. The production method comprisesthe steps of uniformly mixing the raw materials including chromium oxide green, aluminum oxide, compact zirconium oxide and aluminum fluoride; smelting at high temperature; conducting cooling; and crushing, granulating and screening out the chrome corundum material. According to the invention, the added compact zirconium oxide, aluminum oxide and chromium oxide green are smelted and cooled in an electric arc furnace to form a solid solution of ZrO2, Al2O3 and Cr2O3. Compared with a traditional high-chromium brick made of fused chromium oxide, white corundum, zirconium oxide and the like, the situation that ZrO2 cannot form a continuous solid solution with Al2O3 and Cr2O3, the crystalline phase of ZrO2 changes in the temperature changing process, and the quality of refractory products is affected is avoided.
本发明公开了一种铬刚玉料包括Al2O3、Cr2O3和ZrO2，Al2O3的质量百分比为6％～15％，Cr2O3的质量百分比为85％～90％，ZrO2的质量百分比为3％～5％。生产方法包括以下步骤：取原材料氧化铬绿、氧化铝、致密氧化锆和氟化铝均匀混合；高温熔炼；降温冷却；破碎制粒筛出铬刚玉料。本发明采用加入的致密氧化锆与氧化铝、氧化铬绿在电弧炉中熔炼冷却，形成ZrO2、Al2O3、Cr2O3的固溶体；与传统的电熔氧化铬、白刚玉和氧化锆等制成的高铬砖相比，避免ZrO2无法与Al2O3、Cr2O3形成连续的固溶体，ZrO2在温度变化过程中晶相变化，影响耐火产品的质量。
Chrome corundum material and production method thereof
一种铬刚玉料及其生产方法
SUN HONGJIE (author) / WEI YI (author) / WANG QINGSHAN (author) / ZHEN SONGFENG (author)
2020-12-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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