Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Porous coal gasification slag-silicon carbide composite ceramic support and preparation method thereof
The invention relates to a preparation method of a porous coal gasification slag-silicon carbide composite ceramic support, and belongs to the technical field of ceramic membranes. The preparation method comprises the following specific steps: weighing coal gasification slag and silicon carbide powder according to a certain ratio, mixing, drying, sieving, and standing for later use; adding polyvinyl alcohol (PVA) and glycerol into the powder according to a certain proportion, and fully grinding; a certain amount of powder is weighed each time, and a tablet press is used for preparing a flaky support body (phi 40 mm * 2 mm) under a certain pressure. And drying the wet blank of the support body, heating to 1200-1450 DEG C at a certain rate in a muffle furnace, and firing and molding. According to the preparation method, the coal gasification slag is taken as a raw material, the silicon carbide ceramic diaphragm is prepared by adopting reaction sintering, the sintering temperature is reduced while the coal gasification slag is fully utilized, the effects of reducing the cost, realizing low carbon and protecting the environment are achieved, and the prepared silicon carbide diaphragm is high in pure water permeability and excellent in mechanical strength.
本发明涉及一种多孔煤气化渣‑碳化硅复合陶瓷支撑体制备方法，属于陶瓷膜技术领域。其具体步骤为：将煤气化渣与碳化硅粉体按照一定比例称量、混合，再经烘干、过筛后放置备用。向上述粉体中加入一定比例的聚乙烯醇（PVA）和甘油，充分研磨。每次称取一定量的粉料，使用压片机，在一定压力下制备片状支撑体（Φ40 mm×2 mm）。支撑体湿坯经干燥后，在马弗炉中以一定速率升温至1200~1450℃烧制成型。本发明以煤气化渣为原料，采用反应烧结制备碳化硅陶瓷膜片，在对煤气化渣充分利用的同时也降低了烧结温度，达到降低成本、低碳环保的作用，制备的碳化硅膜片纯水渗透率高、且具有优异的机械强度。
Porous coal gasification slag-silicon carbide composite ceramic support and preparation method thereof
The invention relates to a preparation method of a porous coal gasification slag-silicon carbide composite ceramic support, and belongs to the technical field of ceramic membranes. The preparation method comprises the following specific steps: weighing coal gasification slag and silicon carbide powder according to a certain ratio, mixing, drying, sieving, and standing for later use; adding polyvinyl alcohol (PVA) and glycerol into the powder according to a certain proportion, and fully grinding; a certain amount of powder is weighed each time, and a tablet press is used for preparing a flaky support body (phi 40 mm * 2 mm) under a certain pressure. And drying the wet blank of the support body, heating to 1200-1450 DEG C at a certain rate in a muffle furnace, and firing and molding. According to the preparation method, the coal gasification slag is taken as a raw material, the silicon carbide ceramic diaphragm is prepared by adopting reaction sintering, the sintering temperature is reduced while the coal gasification slag is fully utilized, the effects of reducing the cost, realizing low carbon and protecting the environment are achieved, and the prepared silicon carbide diaphragm is high in pure water permeability and excellent in mechanical strength.
本发明涉及一种多孔煤气化渣‑碳化硅复合陶瓷支撑体制备方法，属于陶瓷膜技术领域。其具体步骤为：将煤气化渣与碳化硅粉体按照一定比例称量、混合，再经烘干、过筛后放置备用。向上述粉体中加入一定比例的聚乙烯醇（PVA）和甘油，充分研磨。每次称取一定量的粉料，使用压片机，在一定压力下制备片状支撑体（Φ40 mm×2 mm）。支撑体湿坯经干燥后，在马弗炉中以一定速率升温至1200~1450℃烧制成型。本发明以煤气化渣为原料，采用反应烧结制备碳化硅陶瓷膜片，在对煤气化渣充分利用的同时也降低了烧结温度，达到降低成本、低碳环保的作用，制备的碳化硅膜片纯水渗透率高、且具有优异的机械强度。
Porous coal gasification slag-silicon carbide composite ceramic support and preparation method thereof
一种多孔煤气化渣-碳化硅复合陶瓷支撑体及其制备方法
WEI YIBIN (Autor:in) / WANG YUXUAN (Autor:in) / NIAN PEI (Autor:in) / XU NAN (Autor:in) / WANG YONGDA (Autor:in)
01.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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