A method for preparing niobium monoxide and niobium powder mixture by plasma decomposition

Abstract

Te invention discloses a method for preparing a niobium monoxide and niobium powder mixture through plasma decomposition. According to the method for preparing the niobium monoxide and niobium powder mixture through plasma decomposition, niobium pentoxide is used as a raw material, high-temperature plasma decomposition is conducted on the niobium pentoxide, and then the niobium monoxide and niobium powder mixture is prepared. The method for preparing the niobium monoxide and niobium powder mixture through plasma decomposition comprise the specific steps that the niobium pentoxide is poured into a plasma gun, the decomposition action is conducted through the high temperature of a plasma flame, and then the niobium monoxide and niobium powder mixture is obtained, wherein the power is controlled to be in the range of 10-100 kw; and the niobium monoxide and niobium powder mixture obtained through decomposition falls into a cooling device. The method for preparing the niobium monoxide and niobium powder mixture through plasma decomposition achieves simple and rapid reparation of the niobium monoxide and niobium powder mixture and is low in energy consumption and free of pollution. Besides, the particle shape of the obtained niobium monoxide and niobium powder mixture is sphere, the sphere particle shape is an ideal particle shape for manufacturing of a capacitor, and the niobium monoxide and niobium powder mixture is low in cost and good in quality. The method for preparing the niobium monoxide and niobium powder mixture through plasma decomposition has important significance in the aspects of replacing tantalum with niobium, replacing a tantalum capacitor and an aluminum capacitor with the niobium capacitor, manufacturing of a supercapacitor and the like.

Description

technical field [0001] The invention relates to a method for preparing a mixture of niobium monoxide and niobium powder, in particular to a method for preparing the mixture of niobium monoxide and niobium powder by plasma decomposition. Background technique [0002] At present, the main raw material of capacitors at home and abroad is mainly tantalum powder. However, the process of preparing tantalum powder is very complicated, and the tantalum element is usually stored in granite in nature, which is very difficult to extract, and the tantalum element that exists objectively in the world is very scarce. Considering all aspects, niobium is usually used instead of tantalum powder at home and abroad to solve the shortage of tantalum powder used in capacitors. [0003] In today's niobium-substituted tantalum articles, niobium powder or niobium monoxide is mostly used. Niobium monoxide can be used as a raw material to replace tantalum powder to make electrolytic capacitors. Wit...

AI Technical Summary

Problems solved by technology

However, the raw material niobium monoxide used in the niobium monoxide capacitor has a complicated extraction process before the present invention, and needs multiple processes such as agglomeration and reduction to produce

Due to the large potential market for niobium monoxide at this stage, the traditional extraction method takes a long time, high cost, low efficiency, and high price, which cannot promote market development

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