Porous ceramic as well as preparation method and application thereof: Fid-Bau Portal

Porous ceramic as well as preparation method and application thereof

QIU WEIHUA / LI JINGCHAO

The invention provides porous ceramic as well as a preparation method and application thereof. According to the porous ceramic preparation method provided by the invention, diatomite powder and/or white corundum powder with the particle size of 1-100mu m are/is taken as aggregate, only the aggregate powder containing the diatomite powder and/or white corundum powder, a pore forming agent and a sintering aid are mixed according to a certain proportion to form a mixture, the mixture and paraffin are mixed and stirred to form a green body raw material, and the green body raw material is prepared into the porous ceramic. And then carrying out hot press molding on the ceramic green body raw material to obtain a ceramic green body, and carrying out dewaxing and sintering treatment on the ceramic green body to obtain the porous ceramic with relatively high porosity and relatively high compressive strength. Besides, the preparation method of the porous ceramic provided by the embodiment of the invention is simple in process flow, easy to operate and low in cost, and the density of accumulation among aggregate particles can be adjusted and controlled by adjusting the particle sizes and proportions of the diatomite and/or white corundum, the pore-forming agent and the sintering aid, so that the pores, the pore diameter and the strength of the porous ceramic are easy to adjust and control.

本发明提供了一种多孔陶瓷及其制备方法与应用。本发明提供的多孔陶瓷制备方法，以粒度为1～100μm的硅藻土粉体和/或白刚玉粉体为骨料，仅需将含有硅藻土粉体和/或白刚玉粉体的骨料粉体、造孔剂和助烧剂按照一定的比例混合形成混合料，将混合料与石蜡混合搅拌形成生坯原料，然后将陶瓷生坯原料热压成型为陶瓷生坯，再将陶瓷生坯进行排蜡、烧结处理，即可获得同时兼具较高孔隙率和较强抗压强度的多孔陶瓷。此外，本发明实施例提供的多孔陶瓷制备方法，工艺流程简单，易操作，成本低，并可通过调整硅藻土和/或者白刚玉、造孔剂和助烧剂的粒度及配比，实现调节控制骨料颗粒间堆积的致密度，从而易于调节控制多孔陶瓷的孔隙、孔径和强度。

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