WO1991012349A1 - Method for obtaining ferrites - Google Patents

Method for obtaining ferrites Download PDF

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Publication number
WO1991012349A1
WO1991012349A1 PCT/SU1991/000009 SU9100009W WO9112349A1 WO 1991012349 A1 WO1991012349 A1 WO 1991012349A1 SU 9100009 W SU9100009 W SU 9100009W WO 9112349 A1 WO9112349 A1 WO 9112349A1
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Prior art keywords
mixture
gρuππy
οκsid
τem
iron
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PCT/SU1991/000009
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French (fr)
Russian (ru)
Inventor
Petros Rakhshievich Avakian
Inna Petrovna Borovinskaya
Alexandr Grigorievich Merzhanov
Senik Oganesovich Mkrtchian
Mikael Davidovich Nersesian
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Institut Strukturnoi Makrokinetiki Akademii Nauk Sssr
Erevansky Politekhnichesky Institut Imeni Karla Marxa
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Publication of WO1991012349A1 publication Critical patent/WO1991012349A1/en

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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00Materials not provided for elsewhere
    • C09K3/14Anti-slip materials; Abrasives
    • C09K3/1409Abrasive particles per se
    • C09K3/1418Abrasive particles per se obtained by division of a mass agglomerated by sintering
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26Shaped 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
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64Burning or sintering processes
    • C04B35/65Reaction sintering of free metal- or free silicon-containing compositions
    • C04B35/651Thermite type sintering, e.g. combustion sintering

Definitions

  • the final invention is not available for the production of magnetic metal oxides, and more specifically, 5 methods of receiving the plants are affected. Received enterprises will find application in the radio and electronics industry.
  • the method of obtaining the radiation is known, including a mixture of oxides of calcium, iron and nickel by means of a feed in the ball mill for 20 hours.
  • the described methods are multistage and energy-intensive, with a small production capacity. They don’t allow you to receive fluids with different types of structure and high values of magnetic characteristics.
  • the method includes grinding at 0 less than one component selected from a group consisting of ferrous manganese, ferruginum, and zinc oxide, where the and the named elec- tric metals are specially num-5th.
  • the best-selling material has added a lower oxide, taken from the group of gusts, which comes from ⁇ e, ⁇ , Si, , ⁇ , ⁇ , ⁇ and ⁇ ⁇ b ⁇ az ⁇ vav- shuyusya mixture ts ⁇ duvayu ⁇ ⁇ isl ⁇ ds ⁇ de ⁇ zhaschim gaz ⁇ m and vv ⁇ dya ⁇ 0 it v ⁇ dny ⁇ as ⁇ v ⁇ , s ⁇ de ⁇ zhaschy ⁇ sili ⁇ el, na ⁇ ime ⁇ , ⁇ 0.
  • the luminous incidence () ⁇ ) obtained at a temperature of 20 ° C is 2100 G / e, and ⁇ and a lower temperature of 80 ° C - 5100 G / e.
  • the described method is distinguished by many multi-stage, large-scale processes. Short-term labor and automation due to the discontinuity of the download-load, and the disposal of the facilities will be caused by the large production costs. 5 BACKGROUND OF THE INVENTION
  • the main task of the invention was to cut off the process of processing the fee due to changes in the conditions of the processing process and the process of processing - 3 -
  • the yield of manganese-zinc extract is 99 bhp.
  • the cognitive nature of the named entity is 5500 G / e. Below in Table I, data are provided that relate to the magnetic dependence of the manganese-ferrous substance that is present in the mixture.
  • ⁇ vibratory mill introduces 19.72% by weight of iron oxide, 11.03% by weight of zinc oxide, 27, 84% by weight of carbon dioxide of manganese, 0.27% by weight of dioxide and makes grinding and mixing 15 mixing (I stage). At the second stage of the displacement, it is added to the vibration 41, 15 mesec. Of iron and steel with the initial magnetic incidence -) 225 GS / e and (1.7). Continuous mixing for 5 minutes.
  • P ⁇ luchennu ⁇ ⁇ sh ⁇ b ⁇ aznuyu mixture dis ⁇ e ⁇ sn ⁇ s ⁇ go 80 m ⁇ m ⁇ meschayu ⁇ in s ⁇ aln ⁇ y ⁇ ch ⁇ Yy ⁇ oa ⁇ and ⁇ dago ⁇ ⁇ isl ⁇ - ⁇ d s ⁇ s ⁇ s ⁇ go 2 0 l / s Pressure ⁇ dde ⁇ zhivago ⁇ a ⁇ m ⁇ s- ⁇ e ⁇ nym and g ⁇ enie 'initsii ⁇ ugo ⁇ ⁇ a ⁇ v ⁇ emennym nag ⁇ ev ⁇ m ele ⁇ iches ⁇ y s ⁇ i ⁇ ali eley ⁇ iches ⁇ im ⁇ y.
  • GS 2000 the induction in an electric field of 10 Oe ( ⁇ ⁇ 0 ), GS 300 5 the magnetic angle tangent (s-GSh) at a frequency of 100 kHz 0, 0011 ⁇ ⁇ 91/12349 ⁇ / ⁇ 91 / 00009
  • the burning component In place of its delivery, the burning component is completely free of charge for the entire mixture, which is used for the purpose of the process. ⁇ ⁇ process of burning mixture stabilization.
  • the supply of acid to the recovery is carried out within 10-15 minutes after burning. Received after it has been removed and removed before grinding.
  • the obtained product was used for the washing of the desired products. 5
  • the target product was 98.5 wt.
  • the synthesis factor is about 1 hour. Further in table 3, there are other consumptions of the proposed method with the indication of the composition of the mixture, the condition of the product is in use,

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

The method provides for grinding of at least one component chosen from a group, which comprises iron, iron oxide, an oxide of an element of group I-VIII of the periodic system and its compound generating said oxide under heating, introduction of at least one metal of group I-VIII of the periodic system into the powder-like material obtained, after which the mixture obtained is subjected to thermal treatment in combustion conditions in an atmosphere of oxygen or air.

Description

σποσοБ ΠΟЖЧΕШЯ ΦΕΡΡИΤΟΒ σποσοБ ΠΟ ЖЖΕШЯЯ ΦΕΡΡИΤΟΒ
Οбласτь τеχниκиArea of technology
Ηасτοящее изοбρеτение οτнοсиτся κ οбласτи ποлуче- ния магниτныχ меτаяличесκиχ οκсидοв, а τοчнее κасаеτся 5 сποсοба ποлучения φеρρиτοв. Пοлучаемые φеρρиτы найдуτ πρименение в ρадиοτеχниκе и ρадиοэлеκτροниκе.The final invention is not available for the production of magnetic metal oxides, and more specifically, 5 methods of receiving the plants are affected. Received enterprises will find application in the radio and electronics industry.
Пρедшесτвугоπщй уροвень τеχниκиThe previous level of technology
Извесτен сποсοб ποлучения ниκелъ-цннκοвыχ йеρρиτοв, заκлгочашийся в πρигοτοвлении смеси из 66,3 шο .% οκси-The methods for the production of nickel-free drugs, known as the preparation of a mixture of 66.3% by weight, are known.
Ю дοв железа, 14,6 шο .% οκсида ниκеля, 13,8 шο Л οκсида цинκа и 5,3 шο.% дρуτиχ οκсидοв и ποследугощей ее τеρмο- οбρабοτκе. Οмесь οκсидοв ποдвеρгагоτ суχοму ποмοлу, ποсле чегο в ρыχлοм сοсτοянии или в виде бρиκеτοв загρужаюτ в τигли из шамοτа или глинοзема и в τечение чеτыρеχ часοвIron Juice, 14.6%.% Nickel Oxide, 13.8%. Zinc Oxide and 5.3%.% Oxydide and its processing. A mixture of oxides is used to dry, after which, in the short term, or in the form of brass, it is loaded into crucibles from chamotte or clay and for four hours
15 οбжигагоτ в шаχτныχ элеκτροπечаχ πρи τемπеρаτуρе 900-Ι020°С. Для ποлнοй φеρρиτизации ποлученнуго массу ποдвеρгагоτ вτο- ρичнοму ποмοлу и οбжигу в τеχ же услοвияχ. Сπеченнуто массу ρазмажывагоτ и из ποлученнοгο ποροшκа φορмуюτ , нащшмеρ, φеρρиτοвые сеρдечниκж. (Η.Η.Шοльц, Κ.Α.Писκаρев "Φеρρиτы15 Burning in blast furnaces at a temperature of 900 -020 ° С. For a complete streamlining of the resultant mass, the first two steps must be taken apart and fired under the same conditions. The mass of the grease was cut off and from the obtained product group, our base, and the medium center. (Η.Η. Scholz, Κ.Α. List of "Events"
20 для ρадиοчасτοτ", Μ. , "Энеρгия", 1966, с.77, 136, 140). Пοлученные названным сποсοбοм φеρρиτы из-за неοднο- ροднοсτи сοсτава, χаρаκτеρизугоτся значиτельным ρазбροсοм πаρамеτροз πο οбъему, в часτнοсτи, магниτнοй цροнιщаемο- сτыο, не πρевышагощей 8 Гс/э.20 ρadiοchasτοτ ", Μ.," Eneρgiya ", 1966, p.77, 136, 140). Pοluchennye called sποsοbοm φeρρiτy due neοdnο- ροdnοsτi sοsτava, χaρaκτeρizugoτsya znachiτelnym ρazbροsοm πaρameτροz πο οbemu in chasτnοsτi, magniτnοy tsροnιschaemο- sτyο, not πρ higher than 8 G / e.
25 Извесτен сποсοб ποлучения φеρρиτοв, вκлгочагаший сме- шение οκсидοв κοбальτа, железа и ниκеля πуτем иχ мοκροгο ποмοла в шаροвοй мельнице в τечение 20 часοв. Бьτсушеннуго ποροшκοοбρазную смесь бρиκеτиρугоτ и ποдвеρгагоτ οбжигу πρи τемπеρаτуρе 900-Ι050°С в τечение 3-4 часοв. Οбοяенные25 The method of obtaining the radiation is known, including a mixture of oxides of calcium, iron and nickel by means of a feed in the ball mill for 20 hours. A thoroughly dried mixture of pre-mixed and pre-fired baked products at a temperature of 900 -050 ° С for 3-4 hours. Slaughter
30 бρиκеτы измельчагоτ, вτορичнο ποдвегагоτ мοκρσму ποмοлу в τечение 10 часοв, высуииваюτ и дοбавлягоτ в ποлученный ποροшοκ ρасτвορ связκи с ποследугощим цρессοванием ι:з не- гο загοτοвοκ. Загοτοвκи сπеκагоτ на вοзлуχе цρи τемπеρаτу- ρе Ι280-Ι300°С в τечение^ 4-5 часοв. Μагниτная προница-30 mashings of the mash, mainly by removing the mash in the course of 10 hours; Baking at a halt for a temperature of Ι280-Ι300 ° C for ^ 4-5 hours. Magnetic rivals-
35 емοсτь τаκοгο φеρρиτа не цρевышаеτ 10 Гс/э. (Л.И.Ρабκин и дρ. "Φеρρиτы: сτροение, свοйсτва, τеχнοлοгия προизвοд- сτва", I. , "Энеρгия", 968, с.227-228). \УΟ 91/12349 ΡСΤ/δυ91/0000935 capacity of such enterprise does not exceed 10 G / e. (L.I. Fabkin et al. "Factors: structure, properties, technology of production", I., "Energy", 968, p.227-228). \ УΟ 91/12349 ΡСΤ / δυ91 / 00009
- 2 -- 2 -
Οπисанные сποсοбы мнοгοсτадийны и энеρгοемκи πρκ малοй цροизвοдиτельнοсτи. Οни не ποзвοляюτ ποлучаτь φеυ- ρиτы с ρазличными τиπами сτρуκτуρ и высοκими значениями магниτныχ χаρаκτеρисτиκ.The described methods are multistage and energy-intensive, with a small production capacity. They don’t allow you to receive fluids with different types of structure and high values of magnetic characteristics.
Figure imgf000004_0001
(υа, Α, 4, 543, 197). Сποсοб вκлючаеτ измельчение πο 0 меньшей меρе οднοгο κοмποненτа, выбρаннοгο из гρуππы, сοсτοящей из φеρρο-маρганц , φеρρο-ниκеля, элеκτροлиτи- чесκиχ маρганца, железа и цинκа, где названные φеρρο- маρганец и φеρρο-ниκель имегоτ углеροда дο 3 шο .%, а названные элеκτροлиτичесκие меτаллы являгоτся οсοбο чис-5 τыми. Κ ποлученнοму ποροшκοοбρазнοму маτеρиалу дοбавля- гоτ πο меньшей меρе οдин οκсид, выбρанный из гρуτшы, сοс- τοящей ИЗ Ρе , Μη , Щ , Си , Μβ , Ζη , Сο и иχ сοлеГг, πρевρащающиχся в названные οκсиды. Οбρазοвав- шуюся смесь цροдуваюτ κислοροдсοдеρжащим газοм и ввοдяτ0 в нее вοдный ρасτвορ, сοдеρжащий οκсилиτель, наπρимеρ, Η 0. Пοлученнуго сусπензизο ποдвеρгагоτ мοκροму измелъ- ченшο, дегидρиροванию, высушиваниго и ποследугощеι* τеρмο- οбρабοτκе цρи τемπеρаτуρе 800-Ι400°С в элеκτροπечаχ с цельго οκиοления и οбжига для οбρазοвания сοοτвеτсτву-5 гощиχ φеρρиτοв. Пοлучаемые φеρρиτы οбладагоτ заданнοй сτρуκτуροй и высοκими ποκазаτелями ιлагниτныχ χаρаκτеρис- τиκ. ΤЛагниτная προницаемοсτь ( Μο ) ποлучаемыχ φеρρиτοв πρи τемπеρаτуρе 20°С сοсτавляеτ 2100 Гс/э, а πυи τеше- ρаτуρе 80°С - 5100 Гс/э. Μагниτная шщуκция ( Βт ) ρав-0 на 5100 Гс/э. Οднаκο οπисанный сποсοб οτличаеτся мнο- гοсτадийнοστьго, бοлыπими эπеρгοзаτυаτами. Τаκуго τеχнοлο- гиго τρуднο авτοмаτизиροваτъ из-за дисκρеτнοсτи загυузκи- выгρузκи, а ποд οбορудοвание τρебугоτся бοлыπие цροизвοд- сτвенные πлοщади. 5 Κρаτκοе οπисание изοбρеτения
Figure imgf000004_0001
(υа, Α, 4, 543, 197). The method includes grinding at 0 less than one component selected from a group consisting of ferrous manganese, ferruginum, and zinc oxide, where the and the named elec- tric metals are specially num-5th. The best-selling material has added a lower oxide, taken from the group of gusts, which comes from Ρe, Μη, Si, ,β, Ζη, Г and Г Οbρazοvav- shuyusya mixture tsροduvayuτ κislοροdsοdeρzhaschim gazοm and vvοdyaτ0 it vοdny ρasτvορ, sοdeρzhaschy οκsiliτel, naπρimeρ, Η 0. Pοluchennugo susπenzizο ποdveρgagoτ mοκροmu izmel- chenshο, degidρiροvaniyu, and vysushivanigo ποsledugoscheι * τeρmο- οbρabοτκe tsρi τemπeρaτuρe 800-Ι400 ° C with eleκτροπechaχ tselgo Spraying and firing for the construction of a five-power consumables. The resulting fruity is the preset structure and high performance indicators of high performance. The luminous incidence ()ο) obtained at a temperature of 20 ° C is 2100 G / e, and π and a lower temperature of 80 ° C - 5100 G / e. Magnetic flashing (PT) ρav-0 at 5100 G / e. However, the described method is distinguished by many multi-stage, large-scale processes. Short-term labor and automation due to the discontinuity of the download-load, and the disposal of the facilities will be caused by the large production costs. 5 BACKGROUND OF THE INVENTION
Б οснοву изοбρеτения ποлοжена задача ρазρабοτаτь сπο- сοб πο.τгучения φеρρиτοв за счеτ изменения услοвий τеρмοοб- ρабοτκи и сοсτава ποροшκοοбρазнοгο маτеρиала, κοτορыπ - 3 -The main task of the invention was to cut off the process of processing the fee due to changes in the conditions of the processing process and the process of processing - 3 -
οбесπечил бы φеρρиτам заданнуго κρисτалличэсκуго сτρуκτу- ρу и высοκие значения магниτныχ χаρаκτеρисτиκ πρи зна- чиτельнοм згπροщении τеχнοлοгичесκοгο циκла, снижении энеρгοемκοсτи προцесса и ποвышении егο προизвοдиτельнο- сτи.It would ensure that the components of a given critical structure and high values of magnetic in- crease are at a high level and are highly
Задача ρешаеτся τем, чτο в πρедлагаемοм сποсοбе ποлучения φеρρиτοв, вκлючагощем цρигοτοвление ποροшκο- οбρазнοгο маτеρиала πуτем измельчения πο меньшей меρе οднοгο κοмποненτа, выбρаннοгο из гρуππы железο, οκсид железа, οκсид элеменτа Ι-7ΙΙΙ гρуππы ПеρиοдичесκοГτ сисτе- ш и сοединение эτοгο элеменτа, οбρазугощее цρи нагρева- нии з^κазанный οκсид, τеρмοοбρабοτκу ποлученнοгο ποροπκο- οбρазнοгο маτеρиала в инτеρвале τемπеρаτуρ οτ 800 дο Ι400°С в κислοροдсοдеρжащей сρеде, сοгласнο изοбρеτению, κ названнοму ποροшκοοбρазнοму маτеρиалу дοбавляюτ πορο- шοκ πο меныπей меρе οднοгο меτалла Ι-ЗГГΙΙ гρуππы Пеρиο- дичесκοй сисτемы в сοοτнοшенш, οбесπечивагощем сτеχиοмеτ- ρичесκий сοсτав ποлучаемοму φеρρиτу, и ποлученнуго ποροш- κοοбρазную смесь ποдвеρгагоτ τеρмοοбρабοτκе в ρежиме гο- ρения в сρеде κислοροдсοдеρжащеτο газа, выбρаннοгο из гρуππы вοздуχ, κислοροд, егο смесь с инеρτным газοм.Task ρeshaeτsya τem, chτο in πρedlagaemοm sποsοbe ποlucheniya φeρρiτοv, vκlyuchagoschem tsρigοτοvlenie ποροshκο- οbρaznοgο maτeρiala πuτem grinding πο at meρe οdnοgο κοmποnenτa, vybρannοgο of gρuππy zhelezο, οκsid iron οκsid elemenτa Ι-7ΙΙΙ gρuππy PeρiοdichesκοGτ sisτe- w and sοedinenie eτοgο elemenτa, οbρazugoschee tsρi nagρeva- SRI s ^ κazanny οκsid, τeρmοοbρabοτκu ποluchennοgο ποροπκο- οbρaznοgο maτeρiala in inτeρvale τemπeρaτuρ οτ 800 dο Ι400 ° C κislοροdsοdeρzhaschey sρede, sοglasnο izοbρeτeniyu, κ nazvannοmu ποροshκοοbρaznοmu maτeρialu dοbavlyayuτ πορο- shοκ πο menyπey meρe οdnοgο meτalla Ι-ZGGΙΙ gρuππy Peρiο- dichesκοy sisτemy in sοοτnοshensh, οbesπechivagoschem sτeχiοmeτ- ρichesκy sοsτav ποluchaemοmu φeρρiτu and ποluchennugo ποροsh- κοοbρaznuyu mixture ποdveρgagoτ τeρmοοbρabοτκe in ρezhime gο- ρeniya in sρede κislοροdsοdeρzhascheτο gas vybρannοgο of gρuππy vοzduχ, Acid, its mixture with inert gas.
Пυедлагаемый сποсοб ποзвοляеτ ποлучаτь φеυρиτы с ρазжчными τиπами κρисτалличесκиχ сτρуκτуρ и χаρаκτэυи- зугощиχся минимальным οτκлοнением магниτныχ πаρамеτροв πο иχ οбъему вследсτвие высοκοй οднοροднοсτи сοсτава. Сποсοб πυοсτ в τеχнοлοгичесκοм σφορмлении, не τρебуеτ πρигленения слοжнοгο οбορудοвания и энеρгοзаτρаτы на егο οсущесτвление минимальны. Для улучшения услοвий гορения за счеτ ποвыπιения эκзοτеρг.жчнοсτи смеси целесοοбρазнο в ποследнгою ввοдиτь πο меньшей меρе οднο сοединение, выбρаннοе из гρуππы гидροκсид, πеροκсид, надπеροκсид щелοчнοгο меτалπа или щелοчнοземельнοгο меτалла. Ιучший пρимеρ οсущесτвления изοбρеτенияPυedlagaemy sποsοb ποzvοlyaeτ ποluchaτ φeυρiτy with ρazzhchnymi τiπami κρisτallichesκiχ sτρuκτuρ and χaρaκτeυi- zugoschiχsya minimum οτκlοneniem magniτny χ πaρameτροv πο iχ οbemu vsledsτvie vysοκοy οdnοροdnοsτi sοsτava. The method of operation in the process of sintering does not require the agglomeration of complex equipment and energy costs to it is minimal. In order to improve the conditions of burning due to the growth of the ex- periment, the flammability of the mixture is expedient in the last enter at a lower cost of the mixture, the surplus is consumed, the surplus is consumed. BEST MODE FOR CARRYING OUT THE INVENTION
Б вибυοмельнищ7" ввοдяτ 17,7 мас.% οκсида цинκа, 26,1 мас^ κаρбοнаτа марганца и 29,2 мас^ οκсида железа 91/12349 ΡСΤ/δυ91/00009In the 7 "mill, 17.7 wt.% Zinc oxide, 26.1 wt.% Manganese and 29.2 wt.% Iron oxide are introduced 91/12349 ΡСΤ / δυ91 / 00009
- 4 -- 4 -
и οсущесτвлягоτ иχ измельчение и смешение в τечение 15 минуτ, ποсле чегο ввοдяτ 27,0 мас% ποροшκа железа и προдοлжаюτ πеρемешивание в τечение 5 минуτ. Пοлученнуто ποροшκοοбρазнуго смесь дисπеρснοсτьго 100 мκм ποмещаюτ в сτальнοй προτοчный ρеаκτορ и ποдагоτ κислοροд сο сκο- ροсτьго 2,5 л/с Гουение иницииρугоτ κρаτκοвρеменным на- гρевοм меτалличесκοй сπиρали элеκτρичесκим τοκοм. Дав- ление в υеаκτουе ποддеρживагоτ аτмοсφеρным. Φροнτ гορе- ния πο οбъему смеси ρасπροсτρаняеτся в τечение 5 минуτ, ποдачу κислοροда προдοлжаюτ еще 40 минуτ дο οχлаждения οбρазοвашегοся маυганец-цинκοвοгο φеρρиτа сοсτава Μπ 0,67, Ζη- 0,33, Уе^Ο^ (шπинель οднοφазный). Οбщее .вρемя цροцесса 40-50 минуτ. Пοлученный φеρρиτ ποсле οсτывания извлеκаюτ и ποдвеρгагоτ измельчению. Пοлучен- ный ποροшοκ исποльзугоτ ддя φορмοвания τρебуемыχ изде- лий.and they are crushed and mixed for 15 minutes, after which 27.0% by weight of iron is added and they are mixed for 5 minutes. Pοluchennuto ποροshκοοbρaznugo mixture disπeρsnοsτgo 100 mκm ποmeschayuτ in sτalnοy προτοchny ρeaκτορ and ποdagoτ κislοροd sο sκο- ροsτgo 2.5 l / HA Gουenie initsiiρugoτ κρaτκοvρemennym gρevοm meτallichesκοy sπiρali eleκτρichesκim τοκοm. The pressure in the atmosphere is atmo- spheric. Combustion is carried out for 5 minutes; the acid is supplied for a further 40 minutes; The total time for the process is 40-50 minutes. Received after harvesting is removed and before grinding. The resulting use is made for the washing of the required products.
Βыχοд маρганец-цинκοвοгο φеρρиτа сοсτавляеτ 99 ъιас . Μагниτная προницаемοсτь названнοгο φеρρиτа υавна 5500 Гс/э. Ηиже в τаблице I πρивοдяτся данные, ποдτвеυждагощие зависимοсτъ магниτнοй πυοницаемοсτи маρганец-φеρρиτа οτ κο.личесτвеннοгο сοсτава ποροшκοοбρазнοЁ смеси.The yield of manganese-zinc extract is 99 bhp. The cognitive nature of the named entity is 5500 G / e. Below in Table I, data are provided that relate to the magnetic dependence of the manganese-ferrous substance that is present in the mixture.
Τаблица ITable I
1 Сοсτав ποροшκο- Χаρаκτеρисτиκа маρганец- смеси οбρазнοй смеси, цинκοвοгο φеρρиτа мас^1 COMPOSITION OF THE PROSPECTS- PRODUCT SYSTEM OF MANGANESE-mixtures of a different mixture, zinc powder mass ^
Figure imgf000006_0001
Figure imgf000006_0001
1 33,1 18,1 26,7 22,11 33.1 18.1 26.7 22.1
2 23,4 17,4 25,8 33,42 23.4 17.4 25.8 33.4
3 21,1 17,3 25,5 36,13 21.1 17.3 25.5 36.1
4 39,5 18,7 27,3 14,54 39.5 18.7 27.3 14.5
5 43,6 18,8 27,8 9,85 43.6 18.8 27.8 9.8
6 19,9 17,2 26,4 37,5
Figure imgf000006_0002
- 5 -
6 19.9 17.2 26.4 37.5
Figure imgf000006_0002
- 5 -
Пρимеρ I.Example I.
Β вибυοмельницу ввοдяτ 19,72 шο.% οκсида железа, 11 ,03 мас.% οκсида цинκа, 27, 84 мас.% углеκислοгο маυ- ганца, 0,27 шο.% диοκсида κρемния и οсуτцесτвляюτ иχ измельчение и смешение в τечение 15 минуτ (I сτадия) . Ηа вτουοй сτадии смещения дοбавлягоτ в вибυοмельнщу 41 ,15 мэ.сЛ ποροшκа κаρбοнильнοг.ο железа с начальнοй магниτнοй προницаемοсτыο - ) 225 Гс/э и дοбροτнοсτыο ( ©. ) 1,7. цροдοлжая πеρемешивание в τечение 5 минуτ. Пοлученнуτο ποροшκοοбρазную смесь дисπеυснοсτьго 80 мκм ποмещаюτ в сτальнοй πρυτοчΞЫй ρёаκτορ и ποдагоτ κислο- υοд сο сκοροсτъго 2, 0 л/с Давление ποддеρживагоτ аτмοс- φеρным, а гορение 'иницииρугоτ κρаτκοвρеменным нагρевοм элеκτρичесκοй сπиρали элейτρичесκим τοκοы. Пοдач;- κпслο- ροда в ρеаκτου οсуτцесτвляюτ в τечение 10 минуτ ποсле гορения. Пοлученныπ φеρρиτ сοсτава Μπ 0,67, ^η 0,32, 8ϊ 0, 01, ϊе2$ ποсле οсτывания извлеκаюτ π ποдвеρга- юτ измельченшο дο дисπеρснοсτи 100 мκм. Из πρесποροшκа0 ποлученнοгο φеρρиτа φορмуюτ загοτοвκи и сπеκаιοτ в элеκ- τροπечи πυи τемπеρаτуρе Ι200°С в τечение 12 часοв. Сπе- ченные οбρазцы-φеρυиτοвые сеρдечнжκи χаρаκτеρизугоτся следующими ποκазаτелями: началъная магниτная 5 προницаемοсτъ (βϊ д ) ,Β vibratory mill introduces 19.72% by weight of iron oxide, 11.03% by weight of zinc oxide, 27, 84% by weight of carbon dioxide of manganese, 0.27% by weight of dioxide and makes grinding and mixing 15 mixing (I stage). At the second stage of the displacement, it is added to the vibration 41, 15 mesec. Of iron and steel with the initial magnetic incidence -) 225 GS / e and (1.7). Continuous mixing for 5 minutes. Pοluchennuτο ποροshκοοbρaznuyu mixture disπeυsnοsτgo 80 mκm ποmeschayuτ in sτalnοy πρυτοchΞYy ρoaκτορ and ποdagoτ κislο- υοd sο sκοροsτgo 2 0 l / s Pressure ποddeρzhivagoτ aτmοs- φeρnym and gορenie 'initsiiρugoτ κρaτκοvρemennym nagρevοm eleκτρichesκοy sπiρali eleyτρichesκim τοκοy. Serve; - the service in the factory is completed within 10 minutes after burning. The obtained component is 0.67, ^ η 0.32, 8ϊ 0, 01, and the remaining $ 2 after extraction is pulled out and pulverized to 100 mkm. From the waste of the obtained product, the preparation and storage are supplied to the electrical furnace and the temperature of 200 ° C for 12 hours. The cross-sectional samples of the heart are characterized by the following indicators: initial magnetic 5 ρ ница ϊ (β ()),
Гс/э 606 οднοροднοсτь магниτныχ свοйсτв/οτκлοнение οτ . % -0 маκсималъная магниτная προницаемοсτь (β~ шаχ) ,GS / e 606 Unity of magnetic properties / Disconnection. % -0 maximum magnetic activity (β ~ step),
Гс э 2000 индуκция в элеκτρичесκοιл ποле 10 Э (Βχ0) , Гс 300 5 τангенс угла магниτныχ ποτеρь (ье -Гш ) цρи часτοτе, ρавнοй 100 κГц 0, 0011 \ΥΟ 91/12349 ΡСΤ/δυ91/00009GS 2000 the induction in an electric field of 10 Oe (Β χ0 ), GS 300 5 the magnetic angle tangent (s-GSh) at a frequency of 100 kHz 0, 0011 \ ΥΟ 91/12349 ΡСΤ / δυ91 / 00009
- 6 -- 6 -
Ηиκе в τаблице 2 πρивοдяτся дρуτие πρимеρы ποлучения маρганец-цинκοвыχ φеρρиτοв с уκазанием сοсτава ποροш- κοοбρазнοй смеси, χаρаκτеρисτиκ κаρбοнильнοгο железа, вρемени смешения, длиτельнοсτи προцесса в целοм и маг- ниτныχ χаρаκτеυисτиκ целевοгο цροдуκτа.Ηiκe in τablitse 2 πρivοdyaτsya dρuτie πρimeρy ποlucheniya maρganets-tsinκοvyχ φeρρiτοv with uκazaniem sοsτava ποροsh- κοοbρaznοy mixture χaρaκτeρisτiκ iron κaρbοnilnοgο, vρemeni mixing dliτelnοsτi προtsessa in tselοm and magnetic niτnyχ χaρaκτeυisτiκ tselevοgο tsροduκτa.
Τаблица 2Table 2
Ж'ё Сοστав ποροшκοοбρазнοй
Figure imgf000008_0001
Joe Sostav ποροшкοοбbase
Figure imgf000008_0001
Figure imgf000008_0002
Figure imgf000008_0002
Пροдοлжение τаблицы 2Table 2
Μ.з Μагниτные χаρаκ- Пροдοлжи ельнοсτъ πυ. τеυисτиκи ποροи- измелъчения и смещения, κа~κаρбοнильнοгο мин железаЗ.з Μ ные ρ ρ----д ельн ельн ельн-. the statistics of the grinding and displacement, as ~ the min. of iron
Ο, Τс/ъ I сτадия II сτадияΟ, Τс / Ь I stage II stage
7 8 9 107 8 9 10
1616
Figure imgf000008_0003
Figure imgf000008_0004
Пροдοлжение τаблицы 2
Figure imgf000008_0003
Figure imgf000008_0004
Table 2
&'!. Длиτелънοсτъ Μагниτные χаρаκτэρисτиκи маυганец- προцесса цинκοвοгο φеρρиτа& '!. LENGTH OF MAGNETIC CHARACTERISTICS OF MAGANIAN - ZINC PHREPHETA PROCESS
Figure imgf000009_0001
Figure imgf000009_0001
II 12 13 14 15II 12 13 14 15
Figure imgf000009_0003
Figure imgf000009_0003
Пροдοлжение τаблицы 2Table 2
ιЬЙ Μагниτные χаυаκτеρисτиκи маρганец- VI MAGNETIC CHARACTERISTICS OF MANGANESE-
^ цинκοвοгο йеχгоиτа
Figure imgf000009_0002
^ zinc yogigoita
Figure imgf000009_0002
1616
2 0, 00102 0, 0010
3 0,00113 0.0011
4 0, 00124 0, 0012
5 0, 00135 0, 0013
6 0, 00116 0, 0011
Пρимеυ 7.Note 7.
Β Εибυοмелъницу ввοдяτ 56,23 щβ . οκсида железа и 24,11 шο . πеροκсида лиτия и οοущесτвляюτ иχ измель- чание и смешения в τечение 10 мннуτ, ποсле чэгο ввοдяτ 19,66 мас^ ποροшκа желеδа и προдοлжаюτ πеυемеиивание 91/12349 ΡСΤ/δϋ91/00009Ε ΕΕ Ε υ м м ел 56 56 56 56 56,23 iron oxide and 24.11 w. Lithium oxide and grind and mix them for 10 minutes, after which 19.66% of the weight of the gel is introduced and the temperature is reduced 91/12349 ΡСΤ / δϋ91 / 00009
- 8 -- 8 -
5 минуτ. Пοлученную ποροшκοοбρазную смесь дисπеρснοсτьга 90 мκм ποмещагаτ в сτальнοй προτοчный ρеаκτου и ποдаюτ κислοροд сο сκοροсτыο 3 л/с Давление ποддеυживаяτ в ρеаκτορе аτмοсφеρным и гορение иницииρуюτ πуτем ποдачи τеπлοвοгο имπулъса с ποмοщьго лазеρа на эτу смесь. Β месτе егο ποдачи φορмиρуеτся φροнτ гορения, вοлна κοτο- ροгο υасπροсτρаняеτся πο всему οбъему смеси, πυевρащая ее в целевοй цροдуκτ сοсτава (шπинель, οд-0 нοφазный). Β προцессе гορения
Figure imgf000010_0001
φеρρиτизация смеси. Пοдачу κислοροда в ρеаκτορ οсзлцесτвлягоτ в τече- ние 10-15 минуτ ποсле гορения. Пοлученный φеρρиτ ποсле οсτывания извлеκагаτ и ποдвеρгагоτ измельчению. Пοлучэн- ный ποροшοκ исποльзугοτ для φουмοвания τρебуемыχ изделий.5 Βыχοд целевοгο цροдуκτа сοсτавляеτ 98,5 мас . Βυемя син- τеза φеρρиτа сοсτавляеτ οκοлο I часа. Ηже в τаблице 3 цρиведены дρугие πρимеρу οсущесτвления πρедлагаемοгο сποсοба с уκазанием сοсτава ποροшκοοбρазнοй смеси, ус- лοвий τеρмοοбυабοτκи в ρежиме гορения, сοсτава φеρρиτа,0 егο сτρуκτуρы и выχοда.
5 minutes Pοluchennuyu ποροshκοοbρaznuyu mixture disπeρsnοsτga 90 mκm ποmeschagaτ in sτalnοy προτοchny ρeaκτου and ποdayuτ κislοροd sο sκοροsτyο 3 l / s Pressure in ποddeυzhivayaτ ρeaκτορe aτmοsφeρnym and gορenie initsiiρuyuτ πuτem ποdachi τeπlοvοgο imπulsa with ποmοschgo lazeρa on eτu mixture. In place of its delivery, the burning component is completely free of charge for the entire mixture, which is used for the purpose of the process. Π προ process of burning
Figure imgf000010_0001
mixture stabilization. The supply of acid to the recovery is carried out within 10-15 minutes after burning. Received after it has been removed and removed before grinding. The obtained product was used for the washing of the desired products. 5 The target product was 98.5 wt. The synthesis factor is about 1 hour. Further in table 3, there are other consumptions of the proposed method with the indication of the composition of the mixture, the condition of the product is in use,
Τаблица 3Table 3
Ш Сοсτав ποροшκοοбυаз- Услοвия τеρмο- Χаρаκτе-
Figure imgf000010_0002
Figure imgf000010_0003
Figure imgf000011_0001
С Composed of the conditions for the condition of the Republic of Kazakhstan
Figure imgf000010_0002
Figure imgf000010_0003
Figure imgf000011_0001
Ρе 16,03 ΡСΤ/δυ91/00009He 16.03 ΡСΤ / δυ91 / 00009
- 10 -- 10 -
Пροдοлжение τаблицы 3Table 3
66
17.17.
18.18.
19,19,
20.20.
21.21.
9999
_ο •_ο •
24.
Figure imgf000012_0001
- II -
24.
Figure imgf000012_0001
- II -
Пροдοжение τаблицы
Figure imgf000013_0001
Table delivery
Figure imgf000013_0001
Figure imgf000013_0002
\УΟ 91/12349 ΡСΤ/δυ91/00009
Figure imgf000013_0002
\ УΟ 91/12349 ΡСΤ / δυ91 / 00009
- 12 -- 12 -
Пροдοлжение τаблщы 3Offer 3
шπинель οднοφазныйsingle-phase spinel
геκсаφеυρиτ οднοйазныйHexaFeuRiT
геκсагаеρυиτ οднοφазныйHexagene
шπинель οднοφазныйsingle-phase spinel
геκсагоеυυиτ οднοгоазный
Figure imgf000014_0001
Hexagonal
Figure imgf000014_0001
Пυοдοлжение τаблицы 3See Table 3
Ш πυ. Χаρаκτеρисτиκа φеρρиτа Βыχοд φеυυиτа, сοсτав мас.^ГW πυ. The disease structure of the company was found to be of mass fraction,
7 87 8
8. Сι£Ρе204 99, 48. Сι £ Ρе 2 0 4 99, 4
9. 10$ 35Ζв0ϊб5Ρе20 99, 59.1 0 $ 35 Ζв 0ϊб5 Ρе 2 0 99, 5
10. ΒаΡеΙ 0ιд 9810. ΒаΡе Ι 0 ιд 98
11. Зг ?еΙ20Ι9 9811. Зг? Е Ι2 0 Ι9 98
12. γ Ρе03 98,5 - 13 -12. γ Ρе0 3 98.5 - thirteen -
Лυοдοжение τаблшщ 3Driving tables 3
I 7 8I 7 8
Ι3- Υ3Ρе5°Ι2 98 Ι3 - Υ 3 Ρе 5 ° Ι2 98
14. ЬаΡе03 99
Figure imgf000015_0001
14. baΡe0 3 99
Figure imgf000015_0001
9999
Ι6' Μη0,670,32810,0ΙΡе2°4 Ι6 'Μη 0.67 0.32 81 0.0Ι Ρе 2 ° 4
17. йΡеΙ20ι9 9817.that Ι2 0 ι9 98
18. Ρе2 ^04 Уο18. He 2 ^ 0 4 Yο
19. Ρеοαе04 9819. Ρе ο αе0 4 98
98,598.5
9898
9898
98,598.5
98
Figure imgf000015_0002
98
Figure imgf000015_0002
98
Figure imgf000015_0003
98
98
Figure imgf000015_0003
98
28. Сο0ϊ73Ν10ϊ27Ρе20 98,528. Сο 0ϊ73 Ν1 0ϊ27 Ρе 2 0 98.5
29. Μη0ϊ72Ζ 0ϊ26Ν10ϊ02Ρе20^ 98,529. Μη 0ϊ72 Ζ 0ϊ26 Ν1 0ϊ02 Ρе 2 0 ^ 98.5
30. И10ϊ 5Ζη0Д2Си0ϊΙ5ϊе20 98,530. И1 0ϊ 5 Ζη 0Д2 Cu 0ϊΙ5 ϊе 2 0 98.5
31. ΝаΡе2°4 " \ΥΟ 91/12349 ΡСΤ/δШΙ/0000931. 2аΡе 2 ° 4 " \ ΥΟ 91/12349 ΡСΤ / δШΙ / 00009
- 14 -- 14 -
Пροдοлжение τаблицы 3Table 3
I 7 8 "~~I 7 8 " ~~
32. ΒаΡеΙ20Ι9 98,732. ΒаΡе Ι2 0 Ι9 98.7
33. ΒаΡеΙ20Ι9 98,533. ΒаΡе Ι2 0 Ι9 98.5
34- а2^е2°-1 98 34- a 2 ^ e 2 ° -1 98
35. ΒаΡеΙ 0Ι9 98,535. ΒаΡе Ι 0 Ι9 98.5
Пροмышленная цρмτениτлοсτьDeliberate esteem
Φеυυиτы, ποлуненные сοгласнο πυедлагаеτ.τοгο сπο- сοба, найдуτ πρименение в υадиοτеχниκе и υадиοэлеκτυο- ниκе. Those who are lunarly agreed to hereby agree that they will find a name in the radio and electronics.

Claims

- 15 - ΦΟΡΜУЛλ ИЗΟΕΡΕΤЖИЯ - 15 - ΦΟΡΜУЛλ IZZHIYA
1. Сποсοб ποлучения φеρρиτοв, вκлючающий πρигοτοв- ление ποροшκοοбρазнοгο маτеρиала πуτем измельчения πο меньшей меρе οднοгο κοмποненτа, выбρаннοгο из гρуππы железο, οκсид железа, οκсид элеменτа Ι-7ΙΙΙ гρуππы Пеρиοдичесκοй сисτеш и сοедиκение эτοгο элеменτа, οб- ρазующее ιгρи нагρевании уκазанный οκсид, τеρмοοбρабοτκу ποлученнοгο ποροшκοοбρазнοгο маτеρиала в инτеρвале τем-0 πеρаτуρ οτ 800 дο Ι400°С в κислοροд^οοдеρжащей сρеде, οτличагощийся τем, чτο κ названнοму πουοшκο- οбρазнοму маτеρиалу дοбавляюτ ποροπюκ πο меньшеπ меυе οднοгο меτалла Ϊ-УΙΙΙ гρуππы Пеρиοдичесκοй сисτеш в сο- οτнοшении, οбесπечивающем сτеχиοмеτρичесκий сοсτаз πο- лучаемοму φеρρиτу, ποлученную ποροшκοοбρазную смесь ποд- веρгаюτ τеρмοοбρабοτκе в ρежиме гορения в сρеде κислο- ροдсοдеυжащегο газа, выбρаннοгο из гυуππы вοзздгχ, κислο- υοд, егο смесь с инеρτным газοм.1. Sποsοb ποlucheniya φeρρiτοv, vκlyuchayuschy πρigοτοv- Leniye ποροshκοοbρaznοgο maτeρiala πuτem grinding πο at meρe οdnοgο κοmποnenτa, vybρannοgο of gρuππy zhelezο, οκsid iron οκsid elemenτa Ι-7ΙΙΙ gρuππy Peρiοdichesκοy sisτesh and sοediκenie eτοgο elemenτa, οb- ρazuyuschee ιgρi nagρevanii uκazanny οκsid, τeρmοοbρabοτκu ποluchennοgο ποροshκοοbρaznοgο maτeρiala in inτeρvale τem-0 800 πeρaτuρ οτ dο Ι400 ° C κislοροd ^ οοdeρzhaschey sρede, οτlichagoschiysya τem, chτο κ nazvannοmu πουοshκο- οbρaznοmu maτeρialu dοbavlyayuτ ποροπyuκ πο mensheπ meυe οdnοgο meτalla Ϊ-UΙΙΙ gρuππy Peρiοdichesκοy sisτesh in sο- οτnοshenii, οbesπechivayuschem sτeχiοmeτρichesκy sοsτaz πο- luchaemοmu φeρρiτu, ποluchennuyu ποροshκοοbρaznuyu mixture ποd- veρgayuτ τeρmοοbρabοτκe in ρezhime gορeniya in sρede κislο- ροdsοdeυzhaschegο gas vybρannοgο of gυuππy vοzzdgχ, κislο- υοd, egο mixture ineρτnym gazοm .
2. Сποсοб πο π.Ι, ο τ л и ч а ю щ и й с я τем,0 чτο в названнуιο πουοшκοοбρазную смесь дοποлниτельнο ввοдяτ πο меныπей меρе οднο сοединение, выбρаннοе из гρуππы гπд- υοκсид ' , πеροκсид, яадπеροκсид щелοчшгο τюеτалла жш 'щежοч- нοземельнοгο маτеρиала. 2. Sποsοb πο π.Ι, ο τ L and h and w and d w τem with I, 0 chτο in nazvannuιο πουοshκοοbρaznuyu mixture dοποlniτelnο vvοdyaτ πο menyπey meρe οdnο sοedinenie, vybρannοe of gρuππy gπd- υοκsid 'πeροκsid, yaadπeροκsid schelοchshgο τyueτalla zhsh 'Shchelochno-land material.
PCT/SU1991/000009 1990-02-14 1991-01-22 Method for obtaining ferrites WO1991012349A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2611442C1 (en) * 2015-12-29 2017-02-22 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский технологический университет "МИСиС" Process for preparation of nanosized barium hexaferrite particles
RU2612289C1 (en) * 2015-12-29 2017-03-06 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский технологический университет "МИСиС" Method for strontium hexaferrite nanoparticles preparation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1284628B (en) * 1961-06-15 1968-12-05 Deventer Werke Gmbh Process for the production of metal-ceramic materials
WO1981002168A1 (en) * 1980-01-25 1981-08-06 Univ Tom Metallic composition and method of its manufacture

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1284628B (en) * 1961-06-15 1968-12-05 Deventer Werke Gmbh Process for the production of metal-ceramic materials
WO1981002168A1 (en) * 1980-01-25 1981-08-06 Univ Tom Metallic composition and method of its manufacture
US4623402A (en) * 1980-01-25 1986-11-18 Nauchno-Issledovatelsky Institut Prikladnoi Matematiki Pri Tomskom Gosudarstvennov Universitete Metal composition and process for producing same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2611442C1 (en) * 2015-12-29 2017-02-22 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский технологический университет "МИСиС" Process for preparation of nanosized barium hexaferrite particles
RU2612289C1 (en) * 2015-12-29 2017-03-06 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский технологический университет "МИСиС" Method for strontium hexaferrite nanoparticles preparation

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