Technology of recycling permanent magnet ferrite by microwave sintering method
A permanent magnet ferrite and microwave sintering technology, applied in the field of magnetic materials, can solve problems such as waste of resources and environmental damage, and achieve the effects of reducing pollution, saving energy and improving densification rate
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Embodiment 1
[0021] In this embodiment, a microwave sintering process for regenerating permanent magnet ferrite includes the following steps:
[0022] (1) Coarse crushing: the recovered permanent magnet ferrite waste is roughly crushed by dry ball milling to obtain raw materials, wherein the weight ratio of the material to the steel ball is 1:3, and the crushing time is 40 minutes;
[0023] (2) Doping: Add ferric oxide, strontium oxide, barium oxide, manganese oxide and a dispersant to the crushed raw material, wherein, ferric oxide, strontium oxide, barium oxide, manganese oxide and zinc stearate The addition amount is respectively 10%, 0.5%, 0.05%, 1.5% and 4% of the raw material weight;
[0024] (3) Fine grinding: put the mixed materials together in a ball mill, adopt wet ball milling method, wherein, the mass ratio of material, water and steel balls is 1:3:5, and the ball milling time is 80min to obtain slurry, slurry The average particle size is 4μm;
[0025] (4) Molding: the slurry...
Embodiment 2
[0028] In this implementation, a microwave sintering method for recycling permanent ferrite technology includes the following steps:
[0029] (1) Coarse crushing: the recovered permanent magnet ferrite waste is roughly crushed by dry ball milling to obtain raw materials, wherein the weight ratio of the material to the steel ball is 1:5, and the crushing time is 70 minutes;
[0030] (2) Doping: Add ferric oxide, strontium oxide, barium oxide, manganese oxide and dispersant to the crushed raw materials, among which, the amount of ferric oxide, strontium oxide, barium oxide, manganese oxide and polyethylene 5%, 0.1%, 0.35%, 0.5% and 2% of the raw material weight respectively;
[0031] (3) Fine grinding: the mixed materials are placed in a ball mill together, and a wet ball milling method is adopted, wherein the mass ratio of material, water and steel balls is 1:4:6, and the ball milling time is 130min to obtain slurry, slurry The average particle size is 2μm;
[0032] (4) Formi...
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