A new process of high-purity iron oxide red for soft magnetic ferrite use;

The progress on the study of preparing soft magnetic ferrite ultrafine powder;

A commercial test was made for preparation of 500 t/y high performance Mn-Zn soft magnetic ferrite powders by direct co-precipitation.

In the production of soft ferrite material and cores, the activity (specific surface area) of raw materials has considerable influence on the process and properties, and sintering is one of the key procedures affecting the material properties.

According to the working principle and structure speciality of magnetic circuit of microwave ferrite shifter, the technical requirements for soft ferrites as yokes of microwave ferrite shifters were analyzed, including the main parameters and dimensions, temperature stability, permeability and its frequency spectrum, active energy, stress sensitivity, etc.

Broad temperature low loss FPT type soft ferrite material and core are mass-produced in common roller-kiln.

A novel technology,which is on the preparation of Mn-Zn soft magnetic ferrite using Fe,Mn and Zn existing in waste battery as raw materials,was proposed.

Using pyrolusite,zinc concentration and iron scrap as materials,preparation of Mn-Zn soft magnetic ferrite was studied.

In order to overcome the disadvantages of ceramics method and co-precipitation method on the preparation of Mn-Zn soft magnetic ferrite materials, we combined hydrometallurgy and inorganic chemical engineering with ferrite technology, and the direct-method on the preparation of Mn-Zn soft magnetic ferrite has been successfully developed.