Ball milling device and method used for preparing microwave gyromagnetic ferrite material

Abstract

The invention provides a ball milling device used for preparing a microwave gyromagnetic ferrite material. The ball milling device used for preparing the microwave gyromagnetic ferrite material comprises a power bin with a containing space, a speed-adjustable driving motor is arranged in the power bin, a ball milling bin with a containing space is in butt joint with one side of the power bin, at least two ball milling tanks used for grinding the material are arranged in the ball milling bin, the driving motor is used for providing running power required by the ball milling tanks, a bin cover capable of being opened and closed is arranged on the top surface of the ball milling bin; a constant temperature system for providing temperature control for the ball milling bin is arranged on the outer side of the ball milling bin; and the method comprises the steps of S1, primary ball milling and S2, secondary ball milling. Due to the fact that the constant temperature system is additionally arranged on the ball milling bin, it is guaranteed that the temperature in the ball milling bin is constant, so that iron loss is stable after ball milling every time; the proportion of steel balls, ferrite raw materials and deionized water in the ball milling tanks is reasonably proportioned, the rotating speed and time of the ball milling process are reasonably set, and forward and reverse rotation ball milling is adopted, so that the ball milling time is shortened.

Description

technical field [0001] The invention belongs to the technical field of ferrite preparation, in particular to a ball milling device and method for preparing microwave gyromagnetic ferrite materials. Background technique [0002] Ferrite, also known as magnetic ceramics, refers to a composite oxide magnetic material composed of iron ions, oxygen ions and other metal ions. According to the division of application, such materials can be divided into soft magnetic, hard magnetic, gyromagnetic, moment magnetic and piezo magnetic. [0003] In the process of preparing gyromagnetic ferrite powder, the two ball mills are the most critical steps. The first ball mill is the ball mill after batching to ensure that the raw material formula is fully mixed and uniform, which is beneficial to the complete solid phase reaction during pre-burning; After burning, ball mill to make the particles reach the required particle size. but. In the current ball milling process, the ball milling time ...

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Problems solved by technology

In the current ball milling process, the ball milling time is long, basically more than 12 hours, and the efficiency is low; moreover, the temperature rise of the ball milling tank is large and the iron loss is unstable during the ball milling process, which leads to the deviation of the ferrite raw material formula, and the ion occupancy is non-positive, which affects its performance

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