Title:
METHOD FOR PREPARING EUROPIUM-ACTIVATED VANADIUM PHOSPHATE RED FLUORESCENT POWDER
Document Type and Number:
WIPO Patent Application WO/2013/075289
Kind Code:
A1
Abstract:
This application provides a method for preparing europium-activated vanadium phosphate red fluorescent powder, which comprises: dissolving rare-earth metal elements to prepare oxalate or carbonate precipitates; drying and burning the precipitates to obtain oxides thereof; adding a vanadium source, a phosphoric acid source and an organic solvent into the oxides for mixing and ball-milling; and then performing drying, calcining and cleaning to obtain a finished product. The method is advantageous in simple operating steps, easy control of reaction conditions, uniformly mixed materials, low sintering temperature, short sintering time, small power consumption, and prolonged service life of equipment. The prepared fluorescent powder is advantageous in loose powder, spherical-like granules, uniform granulometric distribution, no need of grinding, and good luminance and heat stability.
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Inventors:
CHEN WEI (CN)
WAN GUOJIANG (CN)
WAN GUOJIANG (CN)
Application Number:
PCT/CN2011/082650
Publication Date:
May 30, 2013
Filing Date:
November 23, 2011
Export Citation:
Assignee:
JIANGMEN KANHOO INDUSTRY CO LTD (CN)
CHEN WEI (CN)
WAN GUOJIANG (CN)
CHEN WEI (CN)
WAN GUOJIANG (CN)
International Classes:
C09K11/83
Foreign References:
| CN101962550A | 2011-02-02 | |||
| CN1528857A | 2004-09-15 | |||
| CN102002364A | 2011-04-06 |
Attorney, Agent or Firm:
JIAQUAN IP LAW FIRM (CN)
广州嘉权专利商标事务所有限公司 (CN)
广州嘉权专利商标事务所有限公司 (CN)
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Claims: