Method for preparing high-purity niobium oxide through filtration via niobium ceramic membrane

The invention discloses a method for preparing high-purity niobium oxide through filtration via a niobium ceramic membrane. The method comprises the following steps: step S1, blending; step S2, addition into a container; step S3, membrane filtration and purification; step S4, drying; step S5, sievin...

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Bibliographic Details
Main Authors MEI LONGBAO, LIANG CHANGMING, LIANG LIANG, SUN SICONG
Format Patent
LanguageChinese
English
Published 29.10.2019
Subjects
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
INORGANIC CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Summary:The invention discloses a method for preparing high-purity niobium oxide through filtration via a niobium ceramic membrane. The method comprises the following steps: step S1, blending; step S2, addition into a container; step S3, membrane filtration and purification; step S4, drying; step S5, sieving; step S6, temperature-controlled calcination in different time zones; step S7, screening; step S8,drying; step S9, air classification; and step S10, packaging. The invention has the beneficial effect that the method solves problems in purity, phase structure, oxidation activity, particle size, particle size distribution and fluidity of niobium oxide. The niobium oxide product has the characteristics of high purity (wherein Nb2O5 purity is more than 99.99%), low temperature phase (an alpha phase structure), uniform particle size distribution and good fluidity, and can well satisfy demands for preparation of materials like niobium oxide drawn crystals (lithium niobate), coating films, targets, capacitors, batteries
Bibliography:Application Number: CN201910598683