Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Magnesium oxide-silicon carbide-carbon porous ceramic filter and preparation method thereof
The invention relates to a magnesium oxide-silicon carbide-carbon porous ceramic filter and a preparation method thereof. The method comprises the following steps: taking modified porous magnesian fine powder, modified coke pitch powder, elemental silicon powder and sodium carboxymethylcellulose as raw materials, adding a water reducing agent, a defoaming agent, aluminum sol and deionized water, and stirring to obtain ceramic slurry with thixotropy; and immersing the silicon carbide preform into the ceramic slurry with thixotropy, taking out, carrying out centrifugal treatment, curing, drying, carrying out heat preservation in a carbon burying atmosphere at 1400-1600 DEG C for 2-6 hours, and cooling to obtain the magnesium oxide-silicon carbide-carbon porous ceramic filter. The filter has the characteristics of excellent filtering effect, high strength and good thermal shock resistance; and the filter is suitable for the field of molten steel purification, and is also suitable for the field of magnesium melt and magnesium alloy melt purification.
本发明涉及一种氧化镁‑碳化硅‑碳多孔陶瓷过滤器及其制备方法。其技术方案是：以改性多孔镁质细粉、改性焦炭沥青粉、单质硅粉和羧甲基纤维素钠为原料，加入减水剂、消泡剂、铝溶胶和去离子水，搅拌，得到具有触变性的陶瓷浆体。将碳化硅预形体浸入具有触变性的陶瓷浆体中，取出后离心处理，养护，干燥，在埋碳气氛和1400～1600℃条件下保温2～6h，冷却，制得氧化镁‑碳化硅‑碳多孔陶瓷过滤器。本发明具有过滤效果优异、强度高和热震稳定性好的特点；既适用于钢液净化领域，又适用于镁熔体和镁合金熔体净化领域。
Magnesium oxide-silicon carbide-carbon porous ceramic filter and preparation method thereof
The invention relates to a magnesium oxide-silicon carbide-carbon porous ceramic filter and a preparation method thereof. The method comprises the following steps: taking modified porous magnesian fine powder, modified coke pitch powder, elemental silicon powder and sodium carboxymethylcellulose as raw materials, adding a water reducing agent, a defoaming agent, aluminum sol and deionized water, and stirring to obtain ceramic slurry with thixotropy; and immersing the silicon carbide preform into the ceramic slurry with thixotropy, taking out, carrying out centrifugal treatment, curing, drying, carrying out heat preservation in a carbon burying atmosphere at 1400-1600 DEG C for 2-6 hours, and cooling to obtain the magnesium oxide-silicon carbide-carbon porous ceramic filter. The filter has the characteristics of excellent filtering effect, high strength and good thermal shock resistance; and the filter is suitable for the field of molten steel purification, and is also suitable for the field of magnesium melt and magnesium alloy melt purification.
本发明涉及一种氧化镁‑碳化硅‑碳多孔陶瓷过滤器及其制备方法。其技术方案是：以改性多孔镁质细粉、改性焦炭沥青粉、单质硅粉和羧甲基纤维素钠为原料，加入减水剂、消泡剂、铝溶胶和去离子水，搅拌，得到具有触变性的陶瓷浆体。将碳化硅预形体浸入具有触变性的陶瓷浆体中，取出后离心处理，养护，干燥，在埋碳气氛和1400～1600℃条件下保温2～6h，冷却，制得氧化镁‑碳化硅‑碳多孔陶瓷过滤器。本发明具有过滤效果优异、强度高和热震稳定性好的特点；既适用于钢液净化领域，又适用于镁熔体和镁合金熔体净化领域。
Magnesium oxide-silicon carbide-carbon porous ceramic filter and preparation method thereof
一种氧化镁-碳化硅-碳多孔陶瓷过滤器及其制备方法
YAN WEN (Autor:in) / PENG WANGDING (Autor:in) / ZHI JINNA (Autor:in) / CHEN ZHE (Autor:in) / LI GUANGQIANG (Autor:in) / ZHENG WAN (Autor:in)
04.05.2021
Patent
Elektronische Ressource
Chinesisch
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