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Silicon-corundum-high-titanium mullite composite refractory material for blast furnace and preparation method of silicon-corundum-high-titanium mullite composite refractory material
The invention discloses a silicon-corundum-high-titanium mullite composite refractory material for a blast furnace and a preparation method, and belongs to the field of refractory materials. Metal silicon powder, high-titanium fused mullite and tabular corundum are used as raw materials, and resin powder and ethylene glycol are used as binding agents. Wherein titanium in the electric smelting mullite raw material exists in the form of a Ti2O3 independent phase. During production, the raw materials are weighed according to the proportion and mixed to obtain pug, and the pug is subjected to compression molding and sintered for 6-12 h at the temperature of 1100-1450 DEG C in the N2 atmosphere in the presence of solid carbon. The apparent porosity of the obtained product is 10-20%, the volume density is 2.70-3.05 g/cm < 3 >, the normal-temperature compressive strength is 70-230 MPa, and the product has good thermal shock resistance and erosion resistance. According to the prepared silicon-corundum-high titanium mullite composite refractory material for the blast furnace, a transition plastic phase process is utilized, metal silicon powder is added into the refractory material, a non-oxide reinforced phase (SiC, O '-Sialon) with excellent performance is generated in situ, and Ti (C, N) with an obvious furnace protection effect can be generated in the composite material in situ without additionally adding a titanium source.
一种高炉用硅‑刚玉‑高钛莫来石复合耐火材料及制备方法，属于耐火材料领域。以金属硅粉、高钛电熔莫来石以及板状刚玉为原料，树脂粉与乙二醇作为结合剂。其中电熔莫来石原料中的钛以Ti2O3独立相的形式存在。生产时按配比称取原料，经混炼得到泥料，压制成型，在1100～1450℃、N2气氛且有固态碳存在的条件下烧结6～12h。得到的该产品显气孔率10～20％、体积密度2.70～3.05g/cm3、常温耐压强度70～230MPa，具有良好的抗热震性能、抗侵蚀性能。本发明制备的高炉用硅‑刚玉‑高钛莫来石复合耐火材料，利用了过渡塑性相工艺，在耐火材料中加入金属硅粉，原位生成了性能优异的非氧化物增强相(SiC、O’‑Sialon)，无需另外加入钛源，就可在复合材料中原位生成具有明显护炉效果的Ti(C,N)。
Silicon-corundum-high-titanium mullite composite refractory material for blast furnace and preparation method of silicon-corundum-high-titanium mullite composite refractory material
The invention discloses a silicon-corundum-high-titanium mullite composite refractory material for a blast furnace and a preparation method, and belongs to the field of refractory materials. Metal silicon powder, high-titanium fused mullite and tabular corundum are used as raw materials, and resin powder and ethylene glycol are used as binding agents. Wherein titanium in the electric smelting mullite raw material exists in the form of a Ti2O3 independent phase. During production, the raw materials are weighed according to the proportion and mixed to obtain pug, and the pug is subjected to compression molding and sintered for 6-12 h at the temperature of 1100-1450 DEG C in the N2 atmosphere in the presence of solid carbon. The apparent porosity of the obtained product is 10-20%, the volume density is 2.70-3.05 g/cm < 3 >, the normal-temperature compressive strength is 70-230 MPa, and the product has good thermal shock resistance and erosion resistance. According to the prepared silicon-corundum-high titanium mullite composite refractory material for the blast furnace, a transition plastic phase process is utilized, metal silicon powder is added into the refractory material, a non-oxide reinforced phase (SiC, O '-Sialon) with excellent performance is generated in situ, and Ti (C, N) with an obvious furnace protection effect can be generated in the composite material in situ without additionally adding a titanium source.
一种高炉用硅‑刚玉‑高钛莫来石复合耐火材料及制备方法，属于耐火材料领域。以金属硅粉、高钛电熔莫来石以及板状刚玉为原料，树脂粉与乙二醇作为结合剂。其中电熔莫来石原料中的钛以Ti2O3独立相的形式存在。生产时按配比称取原料，经混炼得到泥料，压制成型，在1100～1450℃、N2气氛且有固态碳存在的条件下烧结6～12h。得到的该产品显气孔率10～20％、体积密度2.70～3.05g/cm3、常温耐压强度70～230MPa，具有良好的抗热震性能、抗侵蚀性能。本发明制备的高炉用硅‑刚玉‑高钛莫来石复合耐火材料，利用了过渡塑性相工艺，在耐火材料中加入金属硅粉，原位生成了性能优异的非氧化物增强相(SiC、O’‑Sialon)，无需另外加入钛源，就可在复合材料中原位生成具有明显护炉效果的Ti(C,N)。
Silicon-corundum-high-titanium mullite composite refractory material for blast furnace and preparation method of silicon-corundum-high-titanium mullite composite refractory material
一种高炉用硅-刚玉-高钛莫来石复合耐火材料及其制备方法
LI YONG (author) / YUE XI (author) / MA CHENHONG (author) / LI HONGXIA (author)
2022-05-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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