Method for preparing adhesive ferrite magnetic powder

• Main Authors: JIA LIYING, GAO JUNYAN, ZHU DAIMAN, ZHANG WEIFENG, LIU RONGMING, XIONG JUN, WANG QIAN, QUAN XIAOKANG, CHUAI DAN, HU GUOHUI, LI BINGSHAN
• Format: Patent
• Language: Chinese; English
• Published: 28.11.2017
• Subjects: ARTIFICIAL STONE; BASIC ELECTRIC ELEMENTS; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; ELECTRICITY; INDUCTANCES; LIME, MAGNESIA; MAGNETS; METALLURGY; REFRACTORIES; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; SLAG; TRANSFORMERS; TREATMENT OF NATURAL STONE

The invention relates to a method for preparing adhesive ferrite magnetic powder. The method comprises the following steps: mixing a strontium-containing compound and/or a barium-containing compound with iron oxide red so as to obtain a mixed material, sintering the mixed material so as to obtain a sintered material, crushing the obtained sintered material, screening with a screening net so as to obtain crude powder, finely grinding the crude powder into slurry so as to obtain fine powder, further uniformly mixing the fine powder with an alcamines mixture so as to obtain ferrite magnetic powder, and finally annealing the obtained ferrite magnetic powder, thereby obtaining the adhesive ferrite magnetic powder. By adopting the method, a process route is shortened (without acid pickling), the purity of raw materials is lowly required (particularly the content of chlorine), the raw materials are relatively widely selected, the production process is low in control difficulty, and the cost is greatly reduced. The a