CN116621572A - 经济型复合永磁铁氧体的制备方法 - Google Patents
经济型复合永磁铁氧体的制备方法 Download PDFInfo
- Publication number
- CN116621572A CN116621572A CN202310353444.2A CN202310353444A CN116621572A CN 116621572 A CN116621572 A CN 116621572A CN 202310353444 A CN202310353444 A CN 202310353444A CN 116621572 A CN116621572 A CN 116621572A
- Authority
- CN
- China
- Prior art keywords
- powder
- rare earth
- permanent magnetic
- mass
- caco
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 48
- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 149
- 239000012141 concentrate Substances 0.000 claims abstract description 72
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 65
- 239000000463 material Substances 0.000 claims abstract description 59
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 51
- 238000000034 method Methods 0.000 claims abstract description 38
- 239000002994 raw material Substances 0.000 claims abstract description 32
- 229910000018 strontium carbonate Inorganic materials 0.000 claims abstract description 29
- 229910052742 iron Inorganic materials 0.000 claims abstract description 27
- 229910021193 La 2 O 3 Inorganic materials 0.000 claims abstract description 23
- LEDMRZGFZIAGGB-UHFFFAOYSA-L strontium carbonate Chemical compound [Sr+2].[O-]C([O-])=O LEDMRZGFZIAGGB-UHFFFAOYSA-L 0.000 claims abstract description 23
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims abstract description 22
- 229910004298 SiO 2 Inorganic materials 0.000 claims abstract description 22
- 238000005245 sintering Methods 0.000 claims abstract description 22
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 38
- 238000001914 filtration Methods 0.000 claims description 32
- 239000002002 slurry Substances 0.000 claims description 22
- 239000002245 particle Substances 0.000 claims description 20
- 238000000498 ball milling Methods 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- 239000000654 additive Substances 0.000 claims description 10
- 230000000996 additive effect Effects 0.000 claims description 10
- 239000004094 surface-active agent Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 4
- 238000007873 sieving Methods 0.000 claims description 4
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 3
- 239000004227 calcium gluconate Substances 0.000 claims description 3
- 229960004494 calcium gluconate Drugs 0.000 claims description 3
- 235000013927 calcium gluconate Nutrition 0.000 claims description 3
- NEEHYRZPVYRGPP-UHFFFAOYSA-L calcium;2,3,4,5,6-pentahydroxyhexanoate Chemical compound [Ca+2].OCC(O)C(O)C(O)C(O)C([O-])=O.OCC(O)C(O)C(O)C(O)C([O-])=O NEEHYRZPVYRGPP-UHFFFAOYSA-L 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 239000000600 sorbitol Substances 0.000 claims description 3
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 2
- 239000002202 Polyethylene glycol Substances 0.000 claims description 2
- 229920001223 polyethylene glycol Polymers 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 8
- 239000011707 mineral Substances 0.000 abstract description 8
- 238000000926 separation method Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000009257 reactivity Effects 0.000 abstract description 5
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000004513 sizing Methods 0.000 abstract 1
- 239000000706 filtrate Substances 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 11
- 239000008367 deionised water Substances 0.000 description 11
- 229910021641 deionized water Inorganic materials 0.000 description 11
- 229910052712 strontium Inorganic materials 0.000 description 11
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 9
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 8
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 8
- 239000001099 ammonium carbonate Substances 0.000 description 8
- 239000011734 sodium Substances 0.000 description 8
- 239000007787 solid Substances 0.000 description 8
- 238000005406 washing Methods 0.000 description 8
- 235000010755 mineral Nutrition 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 235000012501 ammonium carbonate Nutrition 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- BDAGIHXWWSANSR-NJFSPNSNSA-N hydroxyformaldehyde Chemical compound O[14CH]=O BDAGIHXWWSANSR-NJFSPNSNSA-N 0.000 description 6
- 238000002386 leaching Methods 0.000 description 6
- 239000002244 precipitate Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005188 flotation Methods 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 230000035484 reaction time Effects 0.000 description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 3
- 108010007337 Azurin Proteins 0.000 description 3
- 229910005191 Ga 2 O 3 Inorganic materials 0.000 description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 description 3
- 238000005649 metathesis reaction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 238000010183 spectrum analysis Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000004876 x-ray fluorescence Methods 0.000 description 3
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 2
- 108091005950 Azurite Proteins 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910001631 strontium chloride Inorganic materials 0.000 description 2
- AHBGXTDRMVNFER-UHFFFAOYSA-L strontium dichloride Chemical compound [Cl-].[Cl-].[Sr+2] AHBGXTDRMVNFER-UHFFFAOYSA-L 0.000 description 2
- GWBUNZLLLLDXMD-UHFFFAOYSA-H tricopper;dicarbonate;dihydroxide Chemical compound [OH-].[OH-].[Cu+2].[Cu+2].[Cu+2].[O-]C([O-])=O.[O-]C([O-])=O GWBUNZLLLLDXMD-UHFFFAOYSA-H 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229910052923 celestite Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- -1 rare earth ions Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- UBXAKNTVXQMEAG-UHFFFAOYSA-L strontium sulfate Chemical compound [Sr+2].[O-]S([O-])(=O)=O UBXAKNTVXQMEAG-UHFFFAOYSA-L 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
- C04B35/2608—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead
- C04B35/2633—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead containing barium, strontium or calcium
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
- C04B35/2641—Compositions containing one or more ferrites of the group comprising rare earth metals and one or more ferrites of the group comprising alkali metals, alkaline earth metals or lead
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3227—Lanthanum oxide or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3275—Cobalt oxides, cobaltates or cobaltites or oxide forming salts thereof, e.g. bismuth cobaltate, zinc cobaltite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/442—Carbonates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6562—Heating rate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Power Engineering (AREA)
- Compounds Of Iron (AREA)
Abstract
本发明所述经济型复合永磁铁氧体的制备方法,原料包括Fe2O3、SrCO3、BaCO3、La2O3、Co2O3、CaCO3、SiO2和Al2O3,所述Fe2O3、SiO2和Al2O3采用铁精矿粉,所述SrCO3和BaCO3采用稀土尾矿通过选矿处理得到天青矿精矿和菱锶矿精矿制备的锶‑钡‑稀土混合共生物粉末,工艺步骤包括配料、制备预烧料、制备第二浆料、制备生坯和烧结。本发明所述方法不仅能大幅度降低生产成本,而且能明显改善铁精矿粉反应活性差的问题,提升所制备的复合永磁铁氧体的综合磁性能,并减少稀土尾矿对环境造成的污染和安全隐患及对土地的占用。
Description
技术领域
本发明属于永磁铁氧体制备领域,特别涉及稀土复合永磁铁氧体的制备方法。
背景技术
随着电子器件的集成小型化,对铁氧体永磁材料具有更高的磁性能要求,而目前市场上使用的高性能高档永磁铁氧体都是采用高纯高活性的氧化铁红为原料,但高活性的氧化铁红价格高昂,资源紧缺,货源不稳定,主要依赖进口,不仅使复合永磁铁氧体的制备成本增高,而且影响复合永磁铁氧体的有序生产。铁精矿粉资源丰富,成分相对稳定,价格低廉,价格仅为铁红原料的十分之一左右,是一种铁红原料的替代品,但由于铁精矿粉粒度较粗且为实体颗粒、比表面积小,氧化不完全反应活性差、含杂质元素等因素的限制,要利用铁精矿粉制备出高档永磁铁氧体,亟需解决其反应活性差,微量添加的稀土元素及贵金属混合不均、铁氧体化不完全等问题。CN202211042068.7公开了一种以铁精矿粉为原料制备中高档永磁铁氧体的方法,该方法虽然得到了中高档永磁铁氧体,但是通过在制备第一料浆时加入了助烧剂A和助烧剂B来解决铁精矿粉反应过程中氧化不完全及反应活性差的问题,并将杂质元素对铁氧体永磁性能的影响变害为利,提高铁氧体的磁性能;所述助烧剂A由碳酸钙粉末和氢氧化钠粉末组成,碳酸钙粉末与氢氧化钠粉末的质量比为1:(4.5~5.5);所述助烧剂B由氯化锶粉末和碳酸钾粉末组成,氯化锶粉末与碳酸钾粉末的质量比为1:(5.5~6.5)。
碳酸锶作为高档铁氧体永磁材料制备的主要原料之一,近年来由于对其开采利用的不断加速,以及环保政策的要求,碳酸锶资源紧缺且价格不断飙升,最近两年,已从开始的0.5-0.6万元/每吨涨至1.5-1.8万元/每吨,因而导致企业生产成本大大增加,迫使很多企业不得不选用碳酸钡替换碳酸锶,使磁性能降低明显,无法达到高性能永磁铁氧体的市场应用需求
另一方面,目前大量废弃堆积的稀土尾矿中存在的大量锶资源并未得到回收和综合利用,不仅浪费了宝贵的资源,而且尾矿占用大量土地,且存在一定的环境和安全隐患。因此,对稀土尾矿中的锶资源进行回收利用,将伴生锶矿物资源化,不仅可以为铁氧体永磁材料制备提供价格更低的碳酸锶,给企业创造巨大的经济效益,还可以有效减少尾矿排放量,对改善环境和资源的可持续发展具有重大意义。
发明内容
本发明的目的在于克服现有技术的不足,提供一种经济型复合永磁铁氧体的制备方法,不仅能大幅度降低生产成本,而且能得到性能优良的复合永磁铁氧体,并减少稀土尾矿对环境造成的污染和安全隐患及对土地的占用。
本发明所述经济型复合永磁铁氧体的制备方法,原料包括Fe2O3、SrCO3、BaCO3、La2O3、Co2O3、CaCO3、SiO2和Al2O3,各原料的质量百分数为Fe2O384~87%、SrCO37~9%、BaCO30.05~1.5%、La2O32~4%、Co2O31~2%、CaCO30.1~1%、SiO20.2~0.5%,Al2O30.05~0.1%,所述La2O3采用La2O3粉末,所述Co2O3采用Co2O3粉末,所述CaCO3采用CaCO3粉末,所述Fe2O3、SiO2和Al2O3采用铁精矿粉,所述SrCO3和BaCO3采用稀土尾矿通过选矿处理得到天青矿精矿和菱锶矿精矿制备的锶-钡-稀土混合共生物粉末,工艺步骤如下:
(1)配料
根据稀土复合永磁铁氧体原料中各组分的质量百分比计量铁精矿粉、La2O3粉末、Co2O3粉末、CaCO3粉末和锶-钡-稀土混合共生物粉末;
(2)制备预烧料
将步骤(1)计量好的各原料采用湿法球磨形成悬浮颗粒平均粒径在0.2~2μm的第一料浆,再将所得第一料浆进行过滤,然后将过滤所得湿料进行干燥去除水分后在空气气氛中于1240~1280℃预烧2~4h,得到预烧料;
(3)制备第二料浆
将步骤(2)所得预烧料进行粗破碎并过筛,得到平均粒径在2~5μm的预烧料粉末,然后在预烧料粉末中添加表面活性剂、二次添加剂及水,采用湿法球磨形成悬浮颗粒平均粒径在0.8~1.1μm的第二料浆;所述表面活性剂的添加量为预烧料粉末质量的0.1~0.6%,所述二次添加剂的添加量为预烧料粉末质量的0.9~2.8%;
(4)制备生坯
将步骤(3)所得第二料浆过滤除水,控制过滤除水后所得湿料的含水率在35~40%,然后采用湿压磁场取向压制,使含水率在35~40%的湿料形成生坯,脉冲磁场为8~10KOe,压制压力为7~9MPa;
(5)烧结
将步骤(4)所得生坯在空气气氛中于1180~1220℃保温烧结0.5~2h,然后随炉冷却至室温,即得到稀土复合永磁铁氧体。
上述方法的步骤(3)中,表面活性剂为葡萄糖酸钙、山梨糖醇、聚乙二醇中的至少一种;二次添加剂为CaCO3、SiO2、H3BO3、La2O3、Al2O3粉末中的至少前四种,CaCO3粉末的添加量为预烧料粉末质量的0.5~1.0%,SiO2粉末的添加量为预烧料粉末质量的0.1~0.4%,H3BO3粉末的添加量为预烧料粉末质量的0.1~0.4%,La2O3粉末的添加量为预烧料粉末质量的0.2~0.6%,Al2O3粉末为预烧料粉末质量的0~0.4%。
上述方法的步骤(2)中,过滤所得湿料的干燥温度为150~200℃,干燥时间为2~3h。
上述方法的步骤(5)中,从室温升至烧结温度1180~1220℃的升温速率控制在20~400℃/h。
上述方法中,稀土尾矿通过选矿处理得到天青矿精矿和菱锶矿精矿的方法见CN201910132753.0公开的方法,CN201910132753.0说明书记载:对稀土选矿尾矿加水调浆后进行重选得到重选精矿和重选尾矿;对重选精矿进行强磁选得到磁性矿和非磁性天青石精矿;对重选尾矿加浮选药剂进行浮选粗选,得到菱锶矿粗精矿和浮选尾矿;对菱锶矿粗精矿进行浮选精选作业,得到菱锶矿精矿和中矿。
上述方法中,以天青矿精矿和菱锶矿精矿为原料制备锶-钡-稀土混合共生物粉末采用CN 202211273348.9公开的方法,工艺步骤如下:
(1)将天青矿精矿粉与菱锶矿精矿粉按质量比(1~2):1混合后加去离子水调制成矿浆,矿浆中矿粉的质量浓度控制在40~60%,然后加入稀盐酸调pH值至1.5~2,在室温下反应15~30min;
(2)在步骤(1)所得酸洗矿浆中加入Na2CO3进行复分解,Na2CO3的加入量为天青矿精矿粉和菱锶矿精矿粉中锶摩尔量的1.1~1.3倍,反应温度为80~90℃,反应时间为4~5h,反应时间到达后过滤,得固体物和滤液;
(3)将步骤(2)所得固体物加入去离子水,用盐酸或硝酸调节pH值至2~3,持续反应30~40min,然后过滤,得浸出渣Ⅰ和滤液Ⅰ;
(4)将步骤(3)所得滤液Ⅰ加入氨水调节pH值至7~8,然后过滤得到浸出渣Ⅱ和滤液Ⅱ;
(5)将步骤(4)所得滤液Ⅱ加碳酸铵或碳酸氢铵,反应至沉淀完全析出,经过滤得到沉淀物,所述碳酸铵或碳酸氢铵的加入量为天青矿精矿粉和菱锶矿精矿粉中锶摩尔量的0.9~1.0倍;
(6)将步骤(5)所得沉淀物用去离子水洗涤,然后经过滤、烘干得到锶-钡-稀土混合共生物粉末。
经X射线荧光光谱分析,锶-钡-稀土混合共生物粉末中,所含物质及其质量分数为:SrCO380~94%,BaCO31~15%,CaCO31~2%,Na2O0.1-0.55%,Cl0.03~0.25%,CuO0~0.08%,PbO0~0.055%,NiO0~0.01%,ZnO0~0.01%,Ga2O30~0.008%,余量为稀土氧化物。
本发明具有以下有益效果:
1、由于本发明所述方法的原料Fe2O3采用铁精矿粉,SrCO3和BaCO3采用稀土尾矿通过选矿处理得到天青矿精矿和菱锶矿精矿制备的锶-钡-稀土混合共生物粉末,而铁精矿粉价格仅为铁红原料的十分之一左右,锶-钡-稀土混合共生物粉末制备成本约为碳酸锶价格的十分之一,因此可大幅度降低复合永磁铁氧体的制备成本,且能保证复合永磁铁氧体的有序生产。
2、由于锶-钡-稀土混合共生物粉末具有原子级别的反应活性,因而在制备第一料浆时不加入助烧剂A和助烧剂B就能有效克服铁精矿粉因粒度较粗且为实心颗粒、比表面积小、反应活性差等问题,提高所制备永磁铁氧体的磁性能。
3、由于使用了锶-钡-稀土混合共生物粉末,因而能大大改善微量稀土元素的分散均匀性,从而提高稀土元素的有效利用率,使稀土等贵重金属离子进入到永磁铁氧体晶格内,改善晶体结构提升磁性能,而不是以非磁性相杂相存在于晶界处。
4、本发明所述方法的原料SrCO3和BaCO3采用稀土尾矿通过选矿处理得到天青矿精矿和菱锶矿精矿制备的锶-钡-稀土混合共生物粉末,为稀土选矿尾矿的利用开拓了新的领域,有利于减少稀土尾矿对环境造成的污染和安全隐患及对土地的占用,不仅具有明显的经济效益,而且具有明显的社会效益。
具体实施方式
下面通过实施例对本发明所述利经济型复合永磁铁氧体的制备方法作进一步说明。
下述实施例中,La2O3粉末、Co2O3粉末、CaCO3粉末均通过市场购买。铁精矿粉为威钢铁精矿粉,经测定,所述铁精矿粉中全铁的质量分数为71.65%,二氧化硅的质量分数为0.5%,氧化铝质量分数为0.1%。
实施例1:制备锶-钡-稀土混合共生物粉末
本实施例中,原料天青矿精矿和菱锶矿精矿通过CN201910132753.0所述方法对稀土选矿尾矿进行选矿处理得到。天青矿精矿中,含SrO:34.15wt%;菱锶矿精矿中,含SrO:39.45wt%。制备锶-钡-稀土混合共生物粉末的工艺步骤如下:
(1)将天青矿精矿粉与菱锶矿精矿粉按质量比2:1混合后加去离子水调制成矿浆,矿浆中矿粉的质量浓度控制在50%,然后加入稀盐酸调pH值至2,在室温下反应15min;
(2)在步骤(1)所得酸洗矿浆中加入Na2CO3进行复分解,Na2CO3的加入量为天青矿精矿粉和菱锶矿精矿粉中锶摩尔量的1.2倍(将Na2CO3用去离子水溶解后加入酸洗矿浆),在搅拌下于80℃反应4h,反应时间到达后过滤,得固体物和滤液;
(3)将步骤(2)所得固体物加入去离子水,用盐酸调节pH值至3,持续反应40min,然后过滤,得浸出渣Ⅰ和滤液Ⅰ;
(4)将步骤(3)所得滤液Ⅰ加入氨水调节pH值至8,然后过滤得到浸出渣Ⅱ和滤液Ⅱ;
(5)将步骤(4)所得滤液Ⅱ加碳酸铵,反应至沉淀完全析出,经过滤得到沉淀物,所述碳酸铵的加入量为天青矿精矿粉和菱锶矿精矿粉中锶摩尔量的0.9倍;
(6)将步骤(5)所得沉淀物用去离子水洗涤,然后经过滤、在95℃烘干得到锶-钡-稀土混合共生物粉末。
经X射线荧光光谱分析,锶-钡-稀土混合共生物粉末中,所含物质及其质量分数为:SrCO381%,BaCO314.12%,CaCO31.13%,Na2O0.11%,PbO0.055%,Cl0.044%,Ga2O30.008%,余量为稀土氧化物。
实施例2:制备锶-钡-稀土混合共生物粉末
本实施例中,原料天青矿精矿和菱锶矿精矿通过CN201910132753.0所述方法对稀土选矿尾矿进行选矿处理得到。天青矿精矿中,含SrO:36.88wt%;菱锶矿精矿中,含SrO:41.03wt%。制备锶-钡-稀土混合共生物粉末的工艺步骤如下:
(1)将天青矿精矿粉与菱锶矿精矿粉按质量比1:1混合后加去离子水调制成矿浆,矿浆中矿粉的质量浓度控制在55%,然后加入稀盐酸调pH值至1.5,在室温下反应30min;
(2)在步骤(1)所得酸洗矿浆中加入Na2CO3进行复分解,Na2CO3的加入量为天青矿精矿粉和菱锶矿精矿粉中锶摩尔量的1.2倍(将Na2CO3用去离子水溶解后加入酸洗矿浆),在搅拌下于80℃反应4h,反应时间到达后过滤,得固体物和滤液;
(3)将步骤(2)所得固体物加入去离子水,用盐酸调节pH值至3,持续反应40min,然后过滤,得浸出渣Ⅰ和滤液Ⅰ;
(4)将步骤(3)所得滤液Ⅰ加入氨水调节pH值至8,然后过滤得到浸出渣Ⅱ和滤液Ⅱ;
(5)将步骤(4)所得滤液Ⅱ加碳酸铵,反应至沉淀完全析出,经过滤得到沉淀物,所述碳酸铵的加入量为天青矿精矿粉和菱锶矿精矿粉中锶摩尔量的1.0倍;
(6)将步骤(5)所得沉淀物用去离子水洗涤,然后经过滤、在120℃烘干得到锶-钡-稀土混合共生物粉末。
经X射线荧光光谱分析,锶-钡-稀土混合共生物粉末中,所含物质及其质量分数为:SrCO391%、BaCO32.98%,CaCO31.1%,Na2O0.517%,ZnO0.009%,Cl0.183%,Ga2O30.008%,余量为稀土氧化物。
实施例3:制备复合永磁铁氧体
本实施中,原料包括Fe2O3、SrCO3、BaCO3、La2O3、Co2O3、CaCO3、SiO2和Al2O3,各原料的质量百分数为Fe2O3:85.89%、SrCO3:7.26%、BaCO3:1.27%、La2O3:3.32%、Co2O3:1.39%、CaCO3:0.37%、SiO2:0.42%,Al2O3:0.08%,所述Fe2O3、SiO2和Al2O3采用铁精矿粉,所述La2O3采用La2O3粉末,所述Co2O3采用Co2O3粉末,所述CaCO3采用CaCO3粉末,所述SrCO3和BaCO3采用实施例1制备的锶-钡-稀土混合共生物粉末,工艺步骤如下:
(1)配料
根据复合永磁铁氧体原料中各组分的质量百分比计量铁精矿粉1086g、La2O3粉末43g、Co2O3粉末18g、CaCO3粉末3.5g、锶-钡-稀土混合共生物粉末116g;
(2)制备预烧料
将步骤(1)计量好的各原料用滚筒球磨机湿法球磨形成悬浮颗粒平均粒径在2μm的第一料浆,再将所得第一料浆进行过滤,然后将过滤所得湿料在马弗炉中于200℃保温2h烘干水分,再在空气气氛中升温至1250℃预烧4h,得到预烧料;湿法球磨时,料:水:球=1:1.5:12.5(重量比),球磨机转速85r/min,球磨时间8h;
(3)制备第二料浆
将步骤(2)所得预烧料进行粗破碎并过120目筛,得到预烧料粉末,然后在预烧料粉末中添加表面活性剂、二次添加剂及水,采用湿法球磨形成悬浮颗粒平均粒径在0.86μm的第二料浆;表面活性剂为山梨糖醇,添加量为预烧料粉末质量的0.5%;二次添加剂为CaCO3、SiO2、H3BO3、Al2O3、La2O3,它们的添加量分别为预烧料粉末质量的1.0%(CaCO3)、0.3%(SiO2)、0.2%(H3BO3)、0.2%(Al2O3)、0.2%(La2O3);湿法球磨时,料:水:球=1:1.5:12.5(重量比),球磨机转速85r/min,球磨时间15h;
(4)制备生坯
将步骤(3)所得第二料浆过滤除水,控制过滤除水后所得湿料的含水率在35%,然后采用湿压磁场取向压制,使含水率在35%的湿料形成生坯,脉冲磁场为8KOe,压制压力为8MPa;
(5)烧结
将步骤(4)所得生坯在空气气氛中于1185℃保温烧结2h,然后随炉冷却至室温,即得到复合永磁铁氧体。
对比例1
本对比例与实施例3的原料及各原料的质量百分数相同,工艺步骤及各工艺步骤的工艺参数相同。本对比例与实施例3不同之处是:所述SrCO3采用SrCO3粉末,所述BaCO3采用BaCO3粉末。
实施例4:制备复合永磁铁氧体
本实施中,原料包括Fe2O3、SrCO3、BaCO3、La2O3、Co2O3、CaCO3、SiO2和Al2O3,各原料的质量百分数为Fe2O3:85.79%、SrCO3:7.585%、BaCO3:0.25%、La2O3:3.86%、Co2O3:1.543%、CaCO3:0.47%、SiO2:0.42%,Al2O3:0.082%,所述Fe2O3、SiO2和Al2O3采用铁精矿粉,所述La2O3采用La2O3粉末,所述Co2O3采用Co2O3粉末,所述CaCO3采用CaCO3粉末,所述SrCO3和BaCO3采用实施例2制备的锶-钡-稀土混合共生物粉末,工艺步骤如下:
(1)配料
根据复合永磁铁氧体原料中各组分的质量百分比计量铁精矿粉1086g、La2O3粉末50g、Co2O3粉末20g、CaCO3粉末5g、锶-钡-稀土混合共生物粉末108g;
(2)制备预烧料
将步骤(1)计量好的各原料用滚筒球磨机湿法球磨形成悬浮颗粒平均粒径在1.5μm的第一料浆,再将所得第一料浆进行过滤,然后将过滤所得湿料在马弗炉中于200℃保温2h烘干水分,再在空气气氛中升温至1270℃预烧3h,得到预烧料;湿法球磨时,料:水:球=1:1.5:12.5(重量比),球磨机转速85r/min,球磨时间10h;
(3)制备第二料浆
将步骤(2)所得预烧料进行粗破碎并过120目筛,得到预烧料粉末,然后在预烧料粉末中添加表面活性剂、二次添加剂及水,采用湿法球磨形成悬浮颗粒平均粒径在0.82μm的第二料浆;表面活性剂为葡萄糖酸钙,添加量为预烧料粉末质量的0.2%;二次添加剂为CaCO3、SiO2、H3BO3、Al2O3、La2O3,它们的添加量分别为预烧料粉末质量的0.6%(CaCO3)、0.25%(SiO2)、0.2%(H3BO3)、0.1%(Al2O3)、0.5%(La2O3);湿法球磨时,料:水:球=1:1.5:12.5(重量比),球磨机转速85r/min,球磨时间17h;
(4)制备生坯
将步骤(3)所得第二料浆过滤除水,控制过滤除水后所得湿料的含水率在40%,然后采用湿压磁场取向压制,使含水率在40%的湿料形成生坯,脉冲磁场为8KOe,压制压力为9MPa;
(5)烧结
将步骤(4)所得生坯在空气气氛中于1200℃保温烧结1h,然后随炉冷却至室温,即得到复合永磁铁氧体。
对比例2
本对比例与实施例4的原料及各原料的质量百分数相同,工艺步骤及各工艺步骤的工艺参数相同。本对比例与实施例4不同之处是:用高活性铁红粉末替换铁精矿粉。
对实施例3、4和对比例1、2制备的复合永磁铁氧体按照GB/T3217-92国家标准进行磁性能测试,测试结果见下述表1。
表1磁性能测试结果
编号 | Br(mT) | HCB(KA/m) | HCJ(KA/m) | BH(max)(KJ/m3) |
实施例3 | 420 | 295.3 | 356 | 33 |
对比例1 | 382 | 278 | 336 | 27.5 |
实施例4 | 428 | 305.3 | 356.3 | 34 |
对比例2 | 429 | 306 | 364.4 | 34 |
从表1可以看出,采用锶-钡-稀土混合共生物粉末为锶源和钡源能明显提升复合永磁铁氧体的综合磁性能(见实施例3与对比例1);通过采用锶-钡-稀土混合共生物粉末为锶源和钡源,能明显改善铁精矿粉反应活性差的问题,制备的铁氧体永磁材料能达到高活性的铁红为原料制备的铁氧体永磁材料的磁性能水平(见实施例4与对比例2)。
实施例3、实施例4制备的复合永磁铁氧体能达到高性能铁氧体永磁9材及以上材质的磁性能使用要求。
Claims (5)
1.一种经济型复合永磁铁氧体的制备方法,原料包括Fe2O3、SrCO3、BaCO3、La2O3、Co2O3、CaCO3、SiO2和Al2O3,各原料的质量百分数为Fe2O384~87%、SrCO37~9%、BaCO30.05~1.5%、La2O32~4%、Co2O31~2%、CaCO30.1~1%、SiO20.2~0.5%,Al2O30.05~0.1%,所述La2O3采用La2O3粉末,所述Co2O3采用Co2O3粉末,所述CaCO3采用CaCO3粉末,其特在于所述Fe2O3、SiO2和Al2O3采用铁精矿粉,所述SrCO3和BaCO3采用稀土尾矿通过选矿处理得到天青矿精矿和菱锶矿精矿制备的锶-钡-稀土混合共生物粉末,工艺步骤如下:
(1)配料
根据稀土复合永磁铁氧体原料中各组分的质量百分比计量铁精矿粉、La2O3粉末、Co2O3粉末、CaCO3粉末和锶-钡-稀土混合共生物粉末;
(2)制备预烧料
将步骤(1)计量好的各原料采用湿法球磨形成悬浮颗粒平均粒径在0.2~2μm的第一料浆,再将所得第一料浆进行过滤,然后将过滤所得湿料进行干燥去除水分后在空气气氛中于1240~1280℃预烧2~4h,得到预烧料;
(3)制备第二料浆
将步骤(2)所得预烧料进行粗破碎并过筛,得到平均粒径在2~5μm的预烧料粉末,然后在预烧料粉末中添加表面活性剂、二次添加剂及水,采用湿法球磨形成悬浮颗粒平均粒径在0.8~1.1μm的第二料浆;所述表面活性剂的添加量为预烧料粉末质量的0.1~0.6%,所述二次添加剂的添加量为预烧料粉末质量的0.9~2.8%;
(4)制备生坯
将步骤(3)所得第二料浆过滤除水,控制过滤除水后所得湿料的含水率在35~40%,然后采用湿压磁场取向压制,使含水率在35~40%的湿料形成生坯,脉冲磁场为8~10KOe,压制压力为7~9MPa;
(5)烧结
将步骤(4)所得生坯在空气气氛中于1180~1220℃保温烧结0.5~2h,然后随炉冷却至室温,即得到稀土复合永磁铁氧体。
2.根据权利要求1所述经济型复合永磁铁氧体的制备方法,其特征在于步骤(3)中,表面活性剂为葡萄糖酸钙、山梨糖醇、聚乙二醇中的至少一种;二次添加剂为CaCO3、SiO2、H3BO3、La2O3、Al2O3粉末中的至少前四种,CaCO3粉末的添加量为预烧料粉末质量的0.5~1.0%,SiO2粉末的添加量为预烧料粉末质量的0.1~0.4%,H3BO3粉末的添加量为预烧料粉末质量的0.1~0.4%,La2O3粉末的添加量为预烧料粉末质量的0.2~0.6%,Al2O3粉末为预烧料粉末质量的0~0.4%。
3.根据权利要求1或2所述经济型复合永磁铁氧体的制备方法,其特征在于步骤(2)中,过滤所得湿料的干燥温度为150~200℃,干燥时间为2~3h。
4.根据权利要求1或2所述经济型复合永磁铁氧体的制备方法,其特征在于步骤(5)中,从室温升至烧结温度1180~1220℃的升温速率控制在20~400℃/h。
5.根据权利要求3所述经济型复合永磁铁氧体的制备方法,其特征在于步骤(5)中,从室温升至烧结温度1180~1220℃的升温速率控制在20~400℃/h。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310353444.2A CN116621572A (zh) | 2023-04-04 | 2023-04-04 | 经济型复合永磁铁氧体的制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310353444.2A CN116621572A (zh) | 2023-04-04 | 2023-04-04 | 经济型复合永磁铁氧体的制备方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN116621572A true CN116621572A (zh) | 2023-08-22 |
Family
ID=87601552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202310353444.2A Pending CN116621572A (zh) | 2023-04-04 | 2023-04-04 | 经济型复合永磁铁氧体的制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN116621572A (zh) |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002334803A (ja) * | 2001-05-08 | 2002-11-22 | Sumitomo Special Metals Co Ltd | 永久磁石およびその製造方法 |
CN1461487A (zh) * | 2001-05-24 | 2003-12-10 | 住友特殊金属株式会社 | 氧化物磁性材料 |
KR20050121045A (ko) * | 2004-06-21 | 2005-12-26 | 요업기술원 | 바륨-스트론튬계 페라이트 입자의 제조방법 |
JP2007031203A (ja) * | 2005-07-27 | 2007-02-08 | Tdk Corp | W型フェライト磁石の製造方法 |
CN103290235A (zh) * | 2013-06-26 | 2013-09-11 | 中国地质科学院矿产综合利用研究所 | 一种含锶稀土矿的综合利用工艺 |
CN103724004A (zh) * | 2013-11-13 | 2014-04-16 | 横店集团东磁股份有限公司 | 一种高矫顽力永磁铁氧体材料及其制备方法 |
CN105174929A (zh) * | 2015-09-15 | 2015-12-23 | 重庆通赛机电有限公司 | 一种汽车电机用永磁铁氧体及其制造方法 |
CN109806966A (zh) * | 2019-02-21 | 2019-05-28 | 中国地质科学院矿产综合利用研究所 | 一种从稀土尾矿中综合回收锶矿物的选矿方法 |
CN115340373A (zh) * | 2022-07-15 | 2022-11-15 | 电子科技大学 | 基于低纯度铁精矿原料体系的六角铁氧体材料制备方法 |
CN115637336A (zh) * | 2022-10-18 | 2023-01-24 | 中国地质科学院矿产综合利用研究所 | 一种高钡锶矿制备碳酸锶工艺 |
-
2023
- 2023-04-04 CN CN202310353444.2A patent/CN116621572A/zh active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002334803A (ja) * | 2001-05-08 | 2002-11-22 | Sumitomo Special Metals Co Ltd | 永久磁石およびその製造方法 |
CN1461487A (zh) * | 2001-05-24 | 2003-12-10 | 住友特殊金属株式会社 | 氧化物磁性材料 |
KR20050121045A (ko) * | 2004-06-21 | 2005-12-26 | 요업기술원 | 바륨-스트론튬계 페라이트 입자의 제조방법 |
JP2007031203A (ja) * | 2005-07-27 | 2007-02-08 | Tdk Corp | W型フェライト磁石の製造方法 |
CN103290235A (zh) * | 2013-06-26 | 2013-09-11 | 中国地质科学院矿产综合利用研究所 | 一种含锶稀土矿的综合利用工艺 |
CN103724004A (zh) * | 2013-11-13 | 2014-04-16 | 横店集团东磁股份有限公司 | 一种高矫顽力永磁铁氧体材料及其制备方法 |
CN105174929A (zh) * | 2015-09-15 | 2015-12-23 | 重庆通赛机电有限公司 | 一种汽车电机用永磁铁氧体及其制造方法 |
CN109806966A (zh) * | 2019-02-21 | 2019-05-28 | 中国地质科学院矿产综合利用研究所 | 一种从稀土尾矿中综合回收锶矿物的选矿方法 |
CN115340373A (zh) * | 2022-07-15 | 2022-11-15 | 电子科技大学 | 基于低纯度铁精矿原料体系的六角铁氧体材料制备方法 |
CN115637336A (zh) * | 2022-10-18 | 2023-01-24 | 中国地质科学院矿产综合利用研究所 | 一种高钡锶矿制备碳酸锶工艺 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101444761B (zh) | 一种高含独居石的氟碳铈矿混合稀土矿的浮选分离方法 | |
CN103316770B (zh) | 一种从包头矿磁铁矿尾矿中回收萤石的选矿工艺 | |
CN101474597B (zh) | 一种混合稀土精矿的独居石与氟碳铈矿浮选分离方法 | |
CN101875129A (zh) | 一种高铁铝土矿综合利用的方法 | |
CN103263977B (zh) | 包头矿弱磁选尾矿中铁和稀土的回收工艺 | |
CN100371470C (zh) | 硫酸渣复合球团制取高品位磁铁精矿的方法 | |
CN110404666A (zh) | 一种从风化蚀变碳酸盐型铌多金属矿中回收钡锶烧绿石的方法 | |
CN104445431A (zh) | 一种硫铁矿烧渣制备高纯氧化铁红的方法 | |
CN115417610A (zh) | 一种有色金属矿山全尾矿渣充填用固化剂及其应用 | |
CN106824512A (zh) | 一种提高高碳酸盐混合铁矿石铁精矿碱比的选矿方法 | |
CN106747390B (zh) | 锶铁氧体预烧料及其制备方法 | |
CN108456153A (zh) | 苯丙烯基羟肟酸及其制备方法和在钨矿浮选中的应用 | |
CN104858066A (zh) | 一种制备高纯硫精矿的正反浮选工艺 | |
CN108816499B (zh) | 一种黑云母型含铷矿石的磁浮联合选矿方法 | |
CN111039299B (zh) | 一种铅锌尾矿高效资源化的方法 | |
CN116621572A (zh) | 经济型复合永磁铁氧体的制备方法 | |
CN102432072B (zh) | 一种由硼镁铁矿制备氧化镁、氧化铁、二氧化硅及硼酸的方法 | |
CN116283267B (zh) | 利用稀土尾矿中的回收物制备稀土复合永磁铁氧体的方法 | |
CN109225653B (zh) | 一种高磷赤褐铁矿石除磷的选矿方法 | |
CN102205269A (zh) | 一种氧化钼钨混合粗精矿的精选方法 | |
CN101603121B (zh) | 一种用弱磁性铁矿石生产铁精粉和水泥的方法 | |
CN109437619B (zh) | 一种冶炼铜渣作为水泥铁质校正剂的用途及水泥 | |
CN111534683A (zh) | 一种利用碱熔法富集铁尾矿中氧化铁的方法 | |
CN113042202B (zh) | 一种磁选铁精矿阳离子反浮选方法 | |
CN110029200A (zh) | 一种降低铁原料中酸不溶物含量的铁粉制备方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |