MA-M2T SPINEL SOLID SOLUTION ENHANCED MAGNESIUM OXIDE-BASED CERAMIC FOAM FILTER AND PREPARATION METHOD THEREFOR

WIPO Patent Application WO/2019/196183

A1

An MA-M2T spinel solid solution enhanced magnesium oxide-based ceramic foam filter and a preparation method therefor. The preparation method comprises the steps of: (1) preparing, in percentage by mass, 15%-25% of nano-aluminum sol, 0.8%-1.5% of rheological agent, and the balance of magnesium oxide ceramic powder containing a nano-titanium oxide sintering aid, adding deionized water, mixing these materials uniformly by means of ball milling, and then preparing ceramic slurry having a solid content of 60%-70% by means of vacuum exhaust; (2) immersing a polyurethane foam plastic template into the ceramic slurry, extruding the polyurethane foam plastic template by means of a roller press to remove redundant immersion slurry to prepare a biscuit, and then heating the biscuit to 80-120°C for drying; and (3) putting the dried biscuit in a sintering furnace, heating the biscuit to 1,400-1,600°C for high-temperature sintering, and cooling same to room temperature along with the furnace to obtain a magnesium oxide-based ceramic foam filter.

DING ZHIGUANG (CN)
LIU ZILI (CN)
LIU XIQIN (CN)
YE BING (CN)
DING WENJIANG (CN)

PCT/CN2018/089574

October 17, 2019

June 01, 2018

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FENGYANG AIERSI LIGHT ALLOY PREC MOLDING CO LTD (CN)
UNIV SHANGHAI JIAOTONG (CN)
UNIV NANJING AERONAUTICS & ASTRONAUTICS (CN)

B01D71/02; C04B35/04; C04B35/634; C04B35/636; C04B35/80; C04B38/06

US20030146151A1	2003-08-07
CN103553686A	2014-02-05
CN101708401A	2010-05-19
JPH01108177A	1989-04-25
US4056586A	1977-11-01

JIANGSU SUNDY LAW FIRM (CN)

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