A method for preparing SrFe with high
coercivity using
iron oxide red, belonging to the technical field of the preparation of permanent
magnet ferrite. The present invention uses
iron oxide red as a
raw material and prepares SrFe permanent
magnet ferrite powder material with high
coercivity by the method of "chemical activation - inorganic
ion induction". The method is as follows: 1. Heat and keep
iron oxide red,
strontium carbonate and
potassium hydroxide at a certain temperature for a period of time and then cool to
room temperature; 2. Dispersedly wash the cooled material to obtain a
solid product and then disperse it in water, and add
inorganic salts for inorganic
ion induction treatment; 3. Wash the above reaction material, dry it, keep it warm and then calcine it, and finally cool it to
room temperature with the furnace to obtain SrFe permanent
magnet ferrite powder. The SrFe permanent magnet ferrite prepared by the present invention solves the disadvantages of low
coercivity and high
sintering temperature of the ferrite pre-sintered material in the prior art, and realizes the re-value utilization of low-value iron
oxide red. 12 O 19 permanent magnet ferrite, and belongs to the technical field of the preparation of permanent magnet ferrite. The present invention uses iron
oxide red as a
raw material and prepares SrFe permanent magnet
ferrite powder material with high coercivity by the method of "chemical activation - inorganic
ion induction". The method is as follows: 1. Heat and keep iron
oxide red,
strontium carbonate and
potassium hydroxide at a certain temperature for a period of time and then cool to
room temperature; 2. Dispersedly wash the cooled material to obtain a
solid product and then disperse it in water, and add
inorganic salts for inorganic ion
induction treatment; 3. Wash the above reaction material, dry it, keep it warm and then calcine it, and finally cool it to room temperature with the furnace to obtain SrFe permanent magnet ferrite
powder. The SrFe permanent magnet ferrite prepared by the present invention solves the disadvantages of low coercivity and high
sintering temperature of the ferrite pre-sintered material in the prior art, and realizes the re-value utilization of low-value iron oxide red. 12 O 19 permanent magnet ferrite
powder material, and the method is as follows: 1. Heat and keep iron oxide red,
strontium carbonate and
potassium hydroxide at a certain temperature for a period of time and then cool to room temperature; 2. Dispersedly wash the cooled material to obtain a
solid product and then disperse it in water, and add
inorganic salts for inorganic ion
induction treatment; 3. Wash the above reaction material, dry it, keep it warm and then calcine it, and finally cool it to room temperature with the furnace to obtain SrFe permanent magnet ferrite
powder. The SrFe permanent magnet ferrite prepared by the present invention solves the disadvantages of low coercivity and high
sintering temperature of the ferrite pre-sintered material in the prior art, and realizes the re-value utilization of low-value iron oxide red. 12 O 19 permanent magnet ferrite powder. The SrFe permanent magnet ferrite prepared by the present invention solves the disadvantages of low coercivity and high sintering temperature of the ferrite pre-sintered material in the prior art, and realizes the re-value utilization of low-value iron oxide red. 12 O 19 permanent magnet ferrite solves the disadvantages of low coercivity and high sintering temperature of the ferrite pre-sintered material in the prior art, and realizes the re-value utilization of low-value iron oxide red.