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Alumina hollow sphere reinforcing and toughening method and molten iron pretreatment spray gun refractory castable reinforcing and toughening method
The invention discloses an alumina hollow sphere reinforcing and toughening method and a molten iron pretreatment spray gun refractory castable reinforcing and toughening method, and belongs to the technical field of refractory materials. The alumina hollow sphere reinforcing and toughening method comprises the following steps: 1, putting alumina hollow spheres into a silica sol solution, and stirring in vacuum; 2, continuously soaking after stirring is completed; 3, taking out the soaked alumina hollow spheres, and drying the alumina hollow spheres in a vacuum environment to obtain reinforcedand toughened hollow spheres. The molten iron pretreatment spray gun refractory castable reinforcing and toughening method comprises the following steps: weighing raw materials for preparing refractory castable, and adding the treated hollow spheres; and mixing various raw materials, and carrying out casting molding. The alumina hollow spheres are soaked and dried in the vacuum environment, and surface cracks are filled with silica sol, so the dried surface cracks are few; the introduction of the hollow sphers improves the fluidity of the castable, reduces the water adding amount, and enhances the compactness and the normal-temperature mechanical strength of the castable; and the silica sol on the surfaces of the hollow spheres reacts with a matrix in a high-temperature state to generatea secondary mullite net structure, so that the thermal shock stability and the high-temperature mechanical properties of the material are improved.
本发明公开了一种氧化铝空心球及铁水预处理喷枪耐火浇注料增强增韧方法，属于耐火材料技术领域。本发明的步骤为：步骤一、将氧化铝空心球置于硅溶胶溶液在真空中搅拌；步骤二、搅拌完成后继续浸泡；步骤三、将浸泡后的氧化铝空心球取出，置于真空环境干燥，得到增强增韧的空心球；称取制备耐火浇注料的原料，加入处理后空心球；混合各种原料，进行浇注成型。本发明中氧化铝空心球在真空环境中浸泡并干燥，表面裂隙被硅溶胶填充，干燥后的表面裂纹少，且引入空心球提高浇注料的流动性，减少加水量，增加浇注料的致密性和常温力学强度；在高温状态下，空心球表面硅溶胶和基质反应生成二次莫来石网状结构，提高材料的热震稳定性和高温力学性能。
Alumina hollow sphere reinforcing and toughening method and molten iron pretreatment spray gun refractory castable reinforcing and toughening method
The invention discloses an alumina hollow sphere reinforcing and toughening method and a molten iron pretreatment spray gun refractory castable reinforcing and toughening method, and belongs to the technical field of refractory materials. The alumina hollow sphere reinforcing and toughening method comprises the following steps: 1, putting alumina hollow spheres into a silica sol solution, and stirring in vacuum; 2, continuously soaking after stirring is completed; 3, taking out the soaked alumina hollow spheres, and drying the alumina hollow spheres in a vacuum environment to obtain reinforcedand toughened hollow spheres. The molten iron pretreatment spray gun refractory castable reinforcing and toughening method comprises the following steps: weighing raw materials for preparing refractory castable, and adding the treated hollow spheres; and mixing various raw materials, and carrying out casting molding. The alumina hollow spheres are soaked and dried in the vacuum environment, and surface cracks are filled with silica sol, so the dried surface cracks are few; the introduction of the hollow sphers improves the fluidity of the castable, reduces the water adding amount, and enhances the compactness and the normal-temperature mechanical strength of the castable; and the silica sol on the surfaces of the hollow spheres reacts with a matrix in a high-temperature state to generatea secondary mullite net structure, so that the thermal shock stability and the high-temperature mechanical properties of the material are improved.
本发明公开了一种氧化铝空心球及铁水预处理喷枪耐火浇注料增强增韧方法，属于耐火材料技术领域。本发明的步骤为：步骤一、将氧化铝空心球置于硅溶胶溶液在真空中搅拌；步骤二、搅拌完成后继续浸泡；步骤三、将浸泡后的氧化铝空心球取出，置于真空环境干燥，得到增强增韧的空心球；称取制备耐火浇注料的原料，加入处理后空心球；混合各种原料，进行浇注成型。本发明中氧化铝空心球在真空环境中浸泡并干燥，表面裂隙被硅溶胶填充，干燥后的表面裂纹少，且引入空心球提高浇注料的流动性，减少加水量，增加浇注料的致密性和常温力学强度；在高温状态下，空心球表面硅溶胶和基质反应生成二次莫来石网状结构，提高材料的热震稳定性和高温力学性能。
Alumina hollow sphere reinforcing and toughening method and molten iron pretreatment spray gun refractory castable reinforcing and toughening method
一种氧化铝空心球及铁水预处理喷枪耐火浇注料增强增韧方法
LI MINGHUI (author) / NI WEI (author) / LI CANHUA (author) / OUYANG DEGANG (author) / HUANG ZHENYI (author) / LI YUAN (author) / YU QIAODI (author)
2020-04-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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