Method of taking zirconium oxide balls as ball-milling medium for soft magnetic ferrite material

Abstract

The invention discloses a method of taking zirconium oxide balls as a ball-milling medium for a soft magnetic ferrite material. The method comprises the following steps: weighing and mixing 50.2-64% of iron sesquioxide, 25-32% of manganous-manganic oxide and the balance zinc oxide in percent by mass as a raw material; adding purified water and a dispersant into the raw material; adding mixed slurry when the ball-milling medium zirconium oxide balls start to ball-mill into the raw material and drying the mixture for later use; pre-sintering the dried slurry; adding an additive into the pre-sintered material to ball-mill; then adding the purified water and adding 1.5-2wt% of a dispersant; filling the ball-milling medium zirconium oxide balls to start ball-milling to obtain the mixed slurry;spray drying the mixed slurry to obtain dried powder; sintering the powder at a high temperature; and sintering the powder to obtain the soft magnetic ferrite material. The method solves the problemsthat the energy consumption is high as the impurity content of the material exceeds the standard and the ball-milling time is long by taking steel balls as the ball-milling medium in the prior art, the particle size of the ground material cannot meet a high demand and the like.

Description

technical field [0001] The invention belongs to the technical field of electronic ceramics; in particular, it relates to a method for using zirconia balls as ball milling media for soft ferrite materials. Background technique [0002] Ball milling is a technological process in which powder is mixed evenly in a ball milling equipment and further ground. It is an important process for manufacturing soft ferrite materials. The production of soft ferrite materials adopts the process of secondary ball milling. The mixing of the main raw materials is the first ball milling. The main purpose is to mix the raw materials evenly and further grind them to increase the activity of the raw materials and facilitate pre-burning. time solid phase reaction. The ball mill after calcining and adding additives is secondary ball milling, the main purpose of which is to grind the calcined material into a powder with a certain particle size to facilitate molding and sintering. The ball milling p...

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Problems solved by technology

[0004] The problem to be solved by the present invention is to provide a method of using zirconia balls as the ball milling medium for soft ferrite materials, so as to solve the problem that steel balls are used as ball milling media in the ball milling process for soft ferrite materials in the prior art, and The impurity content of the material exceeds the standard. When steel balls are used as the ball milling medium, the hardness of the steel balls is not enough; there are problems such as high energy consumption due to long ball milling time; the particle size of the milled materials often does not meet the requirements, resulting in high cost of consumables and other problems

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