Title:
MG(AL, CR)2O4 COMPOSITE SPINEL REINFORCED MAGNESIUM OXIDE-BASED FOAM CERAMIC FILTER AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/196179
Kind Code:
A1
Abstract:
A Mg(Al, Cr)2O4 composite spinel reinforced magnesium oxide-based foam ceramic filter and a preparation method therefor. The method comprises the following steps: (1) mixing 15% to 25% nano aluminum sol, 0.8% to 1.5% rheology agent, and the balance of magnesium oxide ceramic powder material containing a nano chromic oxide sintering auxiliary according to the mass percentage, adding anhydrous ethanol, and ball milling and mixing uniformly to form a ceramic slurry having a solid content of 60% to 70%; (2) immersing a polyurethane foam plastic template into the ceramic slurry, removing the superfluous immersion slurry by extruding the polyurethane foam plastic template by means of a roller pressing machine to prepare a biscuit, and then removing the ethanol solvent in a ventilation chamber at 40°C to 50°C to dry the biscuit; and (3) placing the dried biscuit in a sintering furnace, raising the temperature to a temperature of 1350°C to 1550°C to perform high-temperature sintering, and cooling same with the furnace to room temperature so as to obtain a magnesium oxide-based foam ceramic filter.
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Inventors:
LIU XIQIN (CN)
LIU SIYU (CN)
LIU ZILI (CN)
LI JIAN (CN)
LIU SIYU (CN)
LIU ZILI (CN)
LI JIAN (CN)
Application Number:
PCT/CN2018/089568
Publication Date:
October 17, 2019
Filing Date:
June 01, 2018
Export Citation:
Assignee:
JIANGSU ZHONGYI AUTOMOBILE NEW MATERIAL TECH CO LTD (CN)
UNIV NANJING AERONAUTICS & ASTRONAUTICS (CN)
UNIV NANJING AERONAUTICS & ASTRONAUTICS (CN)
International Classes:
B01D39/20; C04B35/04; C04B35/634; C04B35/636; C04B38/06; C22B9/02
Domestic Patent References:
| WO2009144563A2 | 2009-12-03 |
Foreign References:
| CN101138691A | 2008-03-12 | |||
| CN1037498A | 1989-11-29 | |||
| DE10248307A1 | 2004-04-29 | |||
| CN105561803A | 2016-05-11 |
Other References:
JING ET AL: "Recent Research Development of Magnesia-Alumina Spinel Refractories", REFRACTORIES, vol. 38, no. 5, 31 October 2004 (2004-10-31), pages 347 - 349
Attorney, Agent or Firm:
JIANGSU SUNDY LAW FIRM (CN)
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