JP2000211966A - Production of soft ferrite or porcelain material supporting the same - Google Patents
Production of soft ferrite or porcelain material supporting the sameInfo
- Publication number
- JP2000211966A JP2000211966A JP11012322A JP1232299A JP2000211966A JP 2000211966 A JP2000211966 A JP 2000211966A JP 11012322 A JP11012322 A JP 11012322A JP 1232299 A JP1232299 A JP 1232299A JP 2000211966 A JP2000211966 A JP 2000211966A
- Authority
- JP
- Japan
- Prior art keywords
- soft ferrite
- furnace
- ferrite
- firing
- atmosphere
- 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.)
- Withdrawn
Links
- 229910001035 Soft ferrite Inorganic materials 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000000463 material Substances 0.000 title abstract description 9
- 229910052573 porcelain Inorganic materials 0.000 title abstract description 5
- 238000010304 firing Methods 0.000 claims abstract description 44
- 239000012298 atmosphere Substances 0.000 claims abstract description 32
- 239000000203 mixture Substances 0.000 claims abstract description 27
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 18
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 18
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910002091 carbon monoxide Inorganic materials 0.000 claims abstract description 12
- 239000000919 ceramic Substances 0.000 claims abstract description 12
- 230000001590 oxidative effect Effects 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 19
- 229910010293 ceramic material Inorganic materials 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 6
- 239000002699 waste material Substances 0.000 abstract description 12
- 230000002829 reductive effect Effects 0.000 abstract description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 22
- 239000007789 gas Substances 0.000 description 18
- 229910000859 α-Fe Inorganic materials 0.000 description 18
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 14
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 239000011787 zinc oxide Substances 0.000 description 7
- 239000000446 fuel Substances 0.000 description 6
- 239000011019 hematite Substances 0.000 description 5
- 229910052595 hematite Inorganic materials 0.000 description 5
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 229910000480 nickel oxide Inorganic materials 0.000 description 3
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910018605 Ni—Zn Inorganic materials 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000003317 industrial substance Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052611 pyroxene Inorganic materials 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Compounds Of Iron (AREA)
- Magnetic Ceramics (AREA)
Abstract
Description
【０００１】[0001]
【産業の属する技術分野】本発明は、ソフトフェライト
あるいはソフトフェライトを担持させた陶磁器質材料を
安価に製造する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for inexpensively manufacturing soft ferrite or a ceramic material supporting soft ferrite.
【０００２】[0002]
【従来の技術】フェライトは酸化鉄（Ｆｅ2Ｏ3）を主成
分とする複合酸化物の総称であり、一般に強い磁性を有
する。また、磁気的性質からソフト及びハードの二種類
に大別され、それぞれトランスの磁芯、モータやスピー
カの永久磁石として多用されている。ソフトフェライト
はスピネル型のＭｎ−Ｚｎフェライト、Ｎｉ−Ｚｎフェ
ライトなどが代表であり、一般に次式で表される。2. Description of the Related Art Ferrite is a general term for composite oxides containing iron oxide (Fe 2 O 3 ) as a main component, and generally has strong magnetism. Further, they are roughly classified into two types, soft and hard, based on their magnetic properties, and are often used as magnetic cores of transformers and permanent magnets of motors and speakers. The soft ferrite is typically a spinel-type Mn-Zn ferrite or Ni-Zn ferrite, and is generally represented by the following formula.
【化１】Ｍｅ2+Ｏ＋Ｆｅ2Ｏ3→Ｍｅ2+Ｆｅ3+Ｏ4 ただし、Ｍｅ2+：Ｍｎ，Ｎｉ，Ｍｇ，Ｃｕ，Ｚｎ等 つまり、２価の金属酸化物と酸化鉄が等モル反応してス
ピネル型フェライトが形成される。現実的な製造工程
は、まず金属酸化物と酸化鉄の混合物を、仮焼温度８０
０〜１１００℃で焼成し、粗粉砕、微粉砕することによ
りソフトフェライト粉末とする。次に、これを所定の形
状に成形した後、本焼成、仕上げ加工の工程を経て製品
化される。特に、焼成工程には電気炉が使用され、酸素
濃度等の厳密な焼成雰囲気制御が行われている。 Embedded image Me 2+ O + Fe 2 O 3 → Me 2+ Fe 3+ O 4 Me 2+ : Mn, Ni, Mg, Cu, Zn, etc. That is, the divalent metal oxide and iron oxide are equimolar. The reaction forms spinel ferrite. In a practical manufacturing process, a mixture of metal oxide and iron oxide is first heated to a calcining temperature of 80%.
The powder is fired at 0 to 1100 ° C., coarsely ground, and finely ground to obtain a soft ferrite powder. Next, it is formed into a predetermined shape, and then is manufactured through final firing and finishing processes. In particular, an electric furnace is used in the firing process, and strict firing atmosphere control such as oxygen concentration is performed.
【０００３】[0003]
【発明が解決しようとする課題】先に述べたように焼成
過程におけるＭｅＦｅ2Ｏ4及びＦｅ3Ｏ4の生成は、下記
の式で表される。As described above, the formation of MeFe 2 O 4 and Fe 3 O 4 in the firing process is represented by the following equation.
【化２】Ｆｅ2Ｏ3→２／３Ｆｅ3Ｏ4＋１／６Ｏ2↑ 上記の式等の反応に従って過剰酸素の放出が生じるた
め、焼成過程の特に冷却過程における焼成雰囲気制御が
必要である。また、焼成過程での酸素分圧により、得ら
れるフェライト焼結体の微構造は大きく変化し、これが
焼結体の磁気特性を大きく左右する。このように、ソフ
トフェライトの焼成は、普通マッフル型の電気炉で、雰
囲気制御、特に窒素雰囲気中、酸素濃度を厳密に管理し
て行われることから、安価な商品にフェライトを使用す
ることが不可能である。また、上記のような雰囲気調整
の可能な電気炉が高価であり、これまでフェライトが比
較的規模の大きい企業で製造され、中小企業でフェライ
トの製造が行われていないのは、技術的な困難さと設備
投資が高額であることに起因している。## STR2 ## Since Fe 2 O 3 → 2 / 3Fe 3 O 4 + 1 / 6O 2 ↑ release of excess oxygen according to the reaction equation like the above occurs, it is necessary firing atmosphere controlled in particular cooling step in a baking process. Further, the microstructure of the obtained ferrite sintered body changes greatly due to the oxygen partial pressure in the firing process, and this greatly affects the magnetic properties of the sintered body. As described above, since soft ferrite is usually baked in a muffle-type electric furnace with controlled atmosphere, particularly in a nitrogen atmosphere with strictly controlled oxygen concentration, it is not possible to use ferrite for inexpensive products. It is possible. In addition, it is technically difficult that ferrite that can adjust the atmosphere as described above is expensive, and ferrite has been manufactured by a relatively large company and ferrite has not been manufactured by small and medium-sized companies. And the high capital investment.
【０００４】本発明は、従来から陶磁器企業で使用さ
れ、電気炉に比較してはるかに安価なランニングコスト
で焼成することが可能なガス炉等の単独炉の利用、およ
び／または金属酸化物を含有する廃棄物や未利用資源の
利用により、ソフトフェライトあるいはソフトフェライ
トを担持させた陶磁器質材料を安価に製造することを目
的としている。[0004] The present invention relates to the use of a single furnace such as a gas furnace which has been conventionally used by a ceramics company and which can be fired at a running cost much lower than that of an electric furnace, and / or a metal oxide. An object of the present invention is to produce soft ferrite or a ceramic material supporting soft ferrite at low cost by utilizing wastes and unused resources contained therein.
【０００５】[0005]
【課題を解決するための手段】本発明は、原料の成形体
を、単独炉におき、約１１５０℃以上の温度に昇温する
過程は酸化焼成雰囲気で焼成し、続いて、約１１５０℃
〜１３５０℃の温度で一酸化炭素が存在する還元焼成雰
囲気に保持した後、密封した状態で冷却するソフトフェ
ライトの製造方法である。上記の原料の成形体は、ソフ
トフェライト組成の金属酸化物混合物又はこれを添加し
た陶磁器原料の成形体であり、したがって本発明は、ソ
フトフェライト組成の金属酸化物混合物又はこれを添加
した陶磁器原料の成形体を、単独炉におき、約１１５０
℃以上の温度に昇温する過程は酸化焼成雰囲気で焼成
し、続いて、約１１５０℃〜１３５０℃の温度で一酸化
炭素が存在する還元焼成雰囲気に保持した後、密封した
状態で冷却するソフトフェライトの製造方法である。According to the present invention, the process of raising the temperature of the raw material compact to a temperature of about 1150 ° C. or higher in a single furnace is performed in an oxidizing firing atmosphere, followed by firing at about 1150 ° C.
This is a method for producing a soft ferrite, which is maintained at a temperature of about 1350 ° C. in a reducing and firing atmosphere in which carbon monoxide is present, and then cooled in a sealed state. The molded product of the above raw material is a metal oxide mixture of a soft ferrite composition or a molded product of a ceramic raw material to which a soft ferrite composition is added.Therefore, the present invention provides a metal oxide mixture of a soft ferrite composition or a ceramic raw material to which the same is added. The molded body is placed in a single furnace, and about 1150
In the process of raising the temperature to a temperature of at least 100 ° C., baking is performed in an oxidizing firing atmosphere, and subsequently, at a temperature of about 1150 ° C. to 1350 ° C., a reducing firing atmosphere in which carbon monoxide is present, and then cooling in a sealed state is performed. This is a method for producing ferrite.
【０００６】上記の単独炉は好ましくはガス炉であり、
したがって本発明は、原料の成形体を、ガス炉におき、
約１１５０℃以上の温度に昇温する過程は酸化焼成雰囲
気で焼成し、続いて、約１１５０℃〜１３５０℃の温度
で一酸化炭素が存在する還元焼成雰囲気に保持した後、
密封した状態で冷却するソフトフェライトの製造方法で
ある。また本発明は、ソフトフェライト組成の金属酸化
物混合物又はこれを添加した陶磁器原料の成形体を、ガ
ス炉におき、約１１５０℃以上の温度に昇温する過程は
酸化焼成雰囲気で焼成し、続いて、約１１５０℃〜１３
５０℃の温度で一酸化炭素が存在する還元焼成雰囲気に
保持した後、密封した状態で冷却するソフトフェライト
の製造方法である。[0006] The single furnace is preferably a gas furnace,
Therefore, the present invention, the molded body of the raw material is placed in a gas furnace,
In the process of raising the temperature to about 1150 ° C. or more, firing is performed in an oxidizing firing atmosphere, and subsequently, at a temperature of about 1150 ° C. to 1350 ° C., a reduction firing atmosphere in which carbon monoxide is present is used.
This is a method for producing soft ferrite that is cooled in a sealed state. In addition, the present invention provides a process in which a metal oxide mixture having a soft ferrite composition or a molded body of a ceramic raw material to which a soft ferrite composition is added is placed in a gas furnace, and the temperature is raised to a temperature of about 1150 ° C. or more by firing in an oxidation firing atmosphere. About 1150 ° C ~ 13
This is a method for producing a soft ferrite, which is kept at a temperature of 50 ° C. in a reduction firing atmosphere in which carbon monoxide is present, and then cooled in a sealed state.
【０００７】一酸化炭素濃度が１％以上の還元焼成雰囲
気であり、したがって本発明は、原料の成形体を、単独
炉、好ましくはガス炉におき、約１１５０℃以上の温度
に昇温する過程は酸化焼成雰囲気で焼成し、続いて、約
１１５０℃〜１３５０℃の温度で１％以上の濃度の一酸
化炭素が存在する還元焼成雰囲気に保持した後、密封し
た状態で冷却するソフトフェライトの製造方法である。
また本発明は、ソフトフェライト組成の金属酸化物混合
物又はこれを添加した陶磁器原料の成形体を、単独炉、
好ましくはガス炉におき、約１１５０℃以上の温度に昇
温する過程は酸化焼成雰囲気で焼成し、続いて、約１１
５０℃〜１３５０℃の温度で１％以上の濃度の一酸化炭
素が存在する還元焼成雰囲気に保持した後、密封した状
態で冷却するソフトフェライトの製造方法である。[0007] A reduction firing atmosphere having a carbon monoxide concentration of 1% or more. Therefore, the present invention provides a process in which a raw material compact is placed in a single furnace, preferably a gas furnace, and heated to a temperature of about 1150 ° C or more. Is manufactured in an oxidizing sintering atmosphere, followed by holding at a temperature of about 1150 ° C. to 1350 ° C. in a reducing sintering atmosphere having a concentration of carbon monoxide of 1% or more, and then cooling in a sealed state to produce soft ferrite. Is the way.
The present invention also provides a metal oxide mixture having a soft ferrite composition or a molded body of a ceramic raw material to which the mixture is added, a single furnace,
Preferably, in a gas furnace, the step of raising the temperature to about 1150 ° C. or higher involves firing in an oxidizing firing atmosphere, followed by about 11
This is a method for producing a soft ferrite that is cooled at a temperature of 50 ° C. to 1350 ° C. in a reduced firing atmosphere in which carbon monoxide having a concentration of 1% or more is present, and then cooled in a sealed state.
【０００８】[0008]
【発明の実施の形態】本発明の特徴は、ソフトフェライ
トあるいはソフトフェライトを担持させた陶磁器質材料
を、従来から陶磁器企業で使用され、電気炉に比較して
はるかに安価なランニングコストで焼成することが可能
なガス炉等の単独炉により製造することである。DESCRIPTION OF THE PREFERRED EMBODIMENTS A feature of the present invention is that soft ferrite or a ceramic material supporting soft ferrite is fired at a much lower running cost than conventionally used in a ceramic company and compared with an electric furnace. And a single furnace such as a gas furnace.
【０００９】《本発明の方法》ソフトフェライト組成の
金属酸化物混合物又はこれを添加した陶磁器原料の成形
体を、上記単独炉におき、まず、約１１５０℃以上の昇
温過程は酸化焼成雰囲気、すなわちガス等の燃料供給量
に対して過剰の空気を供給する状態、すなわち過剰空気
量を調整することにより炉内の酸素濃度を制御した状態
で焼成する。続いて、約１１５０℃〜１３５０℃の温度
でガス等の供給量に対して理論空気量より少ない状態、
すなわち炉内に酸素がなく、一酸化炭素が存在する還元
焼成雰囲気（一酸化炭素濃度１％以上）で保持した後、
バーナ口や煙道出口等を密封した状態で冷却することに
より、ソフトフェライトあるいはソフトフェライトを担
持した陶磁器質材料を作製する。<< Method of the Invention >> A metal oxide mixture having a soft ferrite composition or a molded body of a ceramic raw material to which a soft ferrite mixture is added is placed in the above-mentioned single furnace. That is, firing is performed in a state where excess air is supplied with respect to the supply amount of fuel such as gas, that is, in a state where the oxygen concentration in the furnace is controlled by adjusting the excess air amount. Subsequently, at a temperature of about 1150 ° C. to 1350 ° C., a state in which the supplied amount of gas or the like is smaller than the theoretical air amount,
That is, after holding in a reduction firing atmosphere (carbon monoxide concentration 1% or more) in which there is no oxygen in the furnace and carbon monoxide is present,
The ferrite or a ceramic material supporting the soft ferrite is manufactured by cooling while the burner port, the flue outlet and the like are sealed.
【００１０】《焼成用燃料》焼成用燃料としては、ＬＰ
Ｇガスや天然ガス等の気体燃料、あるいは重油、灯油、
軽油などの液体燃料が使用できる。また、冷却過程で炉
内を密封する方法は、いぶし瓦の焼成に使用されている
単独窯の密封方法と同様の方法であり、さらに冷却過程
で密封状態の炉内に窒素ガスや炭酸ガスなどの不活性ガ
ス等を導入し、炉圧を加圧状態にすることにより、炉外
からの空気の侵入、すなわち酸素の侵入を確実に防止す
ることが可能となる。<< Firing Fuel >> LP fuel is used as the firing fuel.
Gaseous fuel such as G gas or natural gas, or heavy oil, kerosene,
Liquid fuel such as light oil can be used. In addition, the method of sealing the inside of the furnace during the cooling process is the same as the method of sealing a single kiln used for baking an anvil tile, and furthermore, nitrogen gas, carbon dioxide gas, etc. By introducing an inert gas or the like and setting the furnace pressure to a pressurized state, it is possible to reliably prevent the intrusion of air from outside the furnace, that is, the intrusion of oxygen.
【００１１】《原料》ソフトフェライトを合成するため
の原料としては、酸化鉄、酸化マンガン、酸化亜鉛、酸
化ニッケル等であるが、これら金属酸化物は試薬や工業
薬品として市販されている。また、このような金属酸化
物を含有する廃棄物や未利用資源を使用することも可能
である。例えば、酸化鉄を含有する廃棄物としては、鉄
系材料の研削屑を焼成することにより得られる酸化鉄
や、ボーキサイトからアルミニウム等を採取した後の残
渣である赤泥等がある。また、酸化マンガンや酸化亜鉛
を含有する廃棄物としては、マンガン電池の廃棄物があ
り、酸化亜鉛の廃棄物としては、亜鉛メッキ工程から排
出される廃棄物等がある。<< Raw Materials >> Raw materials for synthesizing soft ferrite include iron oxide, manganese oxide, zinc oxide, nickel oxide and the like, and these metal oxides are commercially available as reagents and industrial chemicals. It is also possible to use wastes and unused resources containing such metal oxides. For example, wastes containing iron oxide include iron oxide obtained by firing grinding dust of an iron-based material, and red mud, which is a residue after collecting aluminum and the like from bauxite. The waste containing manganese oxide or zinc oxide includes manganese battery waste, and the waste of zinc oxide includes waste discharged from a galvanizing process.
【００１２】[0012]
【実施例】本願発明の詳細を実施例で説明する。本願発
明はこれら実施例によって何ら限定されるものではな
い。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to embodiments. The present invention is not limited by these examples.
【００１３】実施例 未利用ろう石と香川県産粘土を配合した陶磁器質タイル
原料に、ベアリングの製造工程で排出する廃棄物である
研削屑を焼成して得られた酸化鉄（Ｆｅ2Ｏ3）と酸化マ
ンガン、酸化ニッケル、酸化亜鉛、及び酸化マンガンと
酸化亜鉛を主成分とする電池廃棄物を、表１に示す配合
割合で混合し原料とした。なお、酸化マンガン、酸化ニ
ッケル、酸化亜鉛は試薬１級を使用した。EXAMPLE Iron oxide (Fe 2 O 3) obtained by calcining grinding wastes, which are wastes discharged in the bearing manufacturing process, on a ceramic tile material containing unused pyroxene and clay produced in Kagawa Prefecture. ), Manganese oxide, nickel oxide, zinc oxide, and battery waste containing manganese oxide and zinc oxide as main components were mixed at the compounding ratio shown in Table 1 to obtain raw materials. In addition, manganese oxide, nickel oxide, and zinc oxide used the reagent first grade.
【００１４】[0014]
【表１】 [Table 1]
【００１５】表１による各種原料の混合物に約３ｍａｓ
ｓ％の水を加え、よく混合した後、３０ＭＰａの圧力で
一軸プレス成形し、１８０×１８０×１０ｍｍの成形体
とした。焼成はいぶし瓦焼成用ガス炉を使用し、まず酸
化焼成雰囲気（焼成雰囲気ガス中の酸素濃度４〜７％）
で１２２０℃まで昇温し、１２２０℃で昇温過程と同様
の酸化焼成雰囲気で１時間保持した後、さらに還元雰囲
気中、同程度の温度で１時間保持した後、煙道出口及び
バーナ口を密封した状態で自然放冷した。なお、還元雰
囲気は表２に示す３種類の焼成雰囲気ガス中の一酸化ガ
ス濃度とした。The mixture of the various raw materials according to Table 1 has about 3
After adding s% of water and mixing well, the mixture was uniaxially press-molded at a pressure of 30 MPa to obtain a molded body of 180 × 180 × 10 mm. Firing is performed using a gas furnace for firing an anvil tile, first, in an oxidizing firing atmosphere (oxygen concentration in the firing atmosphere gas is 4 to 7%).
The temperature was raised to 1220 ° C. and kept at 1220 ° C. for 1 hour in the same oxidizing and firing atmosphere as in the temperature raising process, and further kept in a reducing atmosphere at the same temperature for 1 hour. It was allowed to cool naturally in a sealed state. The reducing atmosphere was the concentration of monoxide gas in the three types of firing atmosphere gases shown in Table 2.
【００１６】[0016]
【表２】 [Table 2]
【００１７】以上の方法により作製したソフトフェライ
トを担持した陶磁器質材料焼成体について、焼結の程度
を評価するための吸水率を測定するとともに、Ｘ線回折
装置を使用し構成物質の同定や、ソフトフェライトの定
量分析を行った。図１は、４種類の原料配合物におい
て、還元雰囲気の条件Ｂで焼成した焼成体のＸ線回折プ
ロファイルを示す。なお、図１において、Ｆはフェライ
ト及びＨは酸化鉄（Ｆｅ2Ｏ3、ヘマタイト）のピークを
示しており、ソフトフェライトとしては試料Ｉではマグ
ネタイト（Ｆｅ3Ｏ4）、試料II、IVではＭｎ−Ｚｎフェ
ライト、試料IIIではＮｉ−Ｚｎフェライトを示す。試
料Ｉにおいて原料として用いた酸化鉄（ヘマタイト）
は、焼成後、マグネタイトに変化しているものの、未反
応酸化鉄（ヘマタイト）の存在も確認できる。一方、試
料II、III、IVにおいては、配合した金属酸化物は、そ
のほとんどがソフトフェライトに変化しており、未反応
の酸化鉄（ヘマタイト）は極めて少ない。いずれにして
も、ガス炉を使用した焼成方法により、フェライトを合
成・焼結できることがわかる。表３は、各試料を焼成し
た後の焼結体の吸水率及び焼結体に生成したソフトフェ
ライトの含有量を示す。The sintered body of the ceramic material supporting the soft ferrite produced by the above method is used to measure the water absorption for evaluating the degree of sintering, and to identify the constituents using an X-ray diffractometer. Quantitative analysis of soft ferrite was performed. FIG. 1 shows an X-ray diffraction profile of a fired body fired under reducing atmosphere condition B in four kinds of raw material blends. In FIG. 1, F indicates the peak of ferrite and H indicates the peak of iron oxide (Fe 2 O 3 , hematite). As the soft ferrite, magnetite (Fe 3 O 4 ) was used in Sample I, and Mn was used in Samples II and IV. -Zn ferrite, Sample III shows Ni-Zn ferrite. Iron oxide (hematite) used as a raw material in sample I
Although it turned into magnetite after firing, the presence of unreacted iron oxide (hematite) can also be confirmed. On the other hand, in Samples II, III, and IV, most of the compounded metal oxide has been changed to soft ferrite, and the amount of unreacted iron oxide (hematite) is extremely small. In any case, it can be understood that ferrite can be synthesized and sintered by a firing method using a gas furnace. Table 3 shows the water absorption of the sintered body after firing each sample and the content of soft ferrite generated in the sintered body.
【００１８】[0018]
【表３】 [Table 3]
【００１９】試料IIIの吸水率はいずれも８〜９％の間
にあり、他の３種類の試料にくらべて大きい値を示して
いる。これら４種類の焼成体は、磁器質材料とは言えな
いが、陶磁器質材料としてタイル等に使用できる材質で
ある。フェライト生成量については、試料Ｉでのマグネ
タイト生成量は５〜６％と低く、また試料II、IIIで２
１〜２４％、そして試料IVで２７．５％となっている。
金属酸化物合計の配合率は３０％程度であることから、
試料IVの生成量は他に比較して大きい。これは酸化マン
ガン及び酸化亜鉛の原料として電池廃棄物を使用した
が、あらかじめこれら２種類の金属酸化物が十分に混合
されていることに起因するものと考えられる。いずれに
しても、試薬、工業薬品、廃棄物のいずれかによる、上
記金属酸化物を使用し、本発明によるガス炉等単独窯に
より、ソフトフェライトあるいはソフトフェライトを担
持させた陶磁器質材料を作製することが可能である。こ
のような材料は既存のフェライトに比較して安価に製造
することが可能であり、近年問題となっている電磁波障
害に対する吸収材料としての用途などに使用できる可能
性がある。The water absorption of Sample III is between 8 and 9%, which is larger than the other three samples. Although these four types of fired bodies cannot be said to be porcelain materials, they are materials that can be used for tiles and the like as porcelain materials. Regarding the amount of ferrite generated, the amount of magnetite generated in Sample I was as low as 5 to 6%, and the amount of ferrite generated in Samples II and III was 2%.
1 to 24%, and 27.5% for sample IV.
Since the compounding ratio of the total metal oxide is about 30%,
The yield of sample IV is large compared to the others. This is because battery waste was used as a raw material of manganese oxide and zinc oxide, and it is considered that these two types of metal oxides were sufficiently mixed in advance. In any case, using the above-mentioned metal oxide by any of reagents, industrial chemicals, and wastes, a soft kiln such as a gas furnace according to the present invention is used to produce soft ferrite or a ceramic material supporting soft ferrite. It is possible. Such a material can be manufactured at a lower cost than existing ferrite, and can be used for applications as an absorbing material against electromagnetic interference, which has recently become a problem.
【００２０】[0020]
【発明の効果】陶磁器等の焼成に使用されているＬＰＧ
ガス炉等の安価な焼成炉を使用し、ソフトフェライト組
成の金属酸化物混合物又はこれを添加した陶磁器原料の
成形品を焼成することにより、ソフトフェライトあるい
はソフトフェライトを担持させた陶磁器質材料を安価に
製造することができる。The LPG used for firing ceramics and the like
By using an inexpensive firing furnace such as a gas furnace and firing a metal oxide mixture having a soft ferrite composition or a molded article of a ceramic raw material to which the soft ferrite composition has been added, soft ferrite or a ceramic material supporting soft ferrite can be inexpensively manufactured. Can be manufactured.
【図１】４種類の原料配合物において、還元雰囲気の条
件Ｂで焼成した焼成体のＸ線回折プロファイルを示す。
図中、Ｆはフェライト、Ｈはヘマタイトの略語である。FIG. 1 shows an X-ray diffraction profile of a fired body fired under a reducing atmosphere condition B in four types of raw material formulations.
In the figure, F is an abbreviation for ferrite and H is an abbreviation for hematite.
Claims (4)
５０℃以上の温度に昇温する過程は酸化焼成雰囲気で焼
成し、続いて、約１１５０℃〜１３５０℃の温度で一酸
化炭素が存在する還元焼成雰囲気に保持した後、密封し
た状態で冷却するソフトフェライトあるいはそれを担持
させた陶磁器質材料の製造方法。1. A molded body of a raw material is placed in a single furnace, and about 11
The process of raising the temperature to a temperature of 50 ° C. or higher involves firing in an oxidizing firing atmosphere, followed by maintaining at a temperature of about 1150 ° C. to 1350 ° C. in a reducing firing atmosphere in which carbon monoxide is present, and then cooling in a sealed state. A method for producing soft ferrite or a ceramic material supporting the same.
の金属酸化物混合物又はこれを添加した陶磁器原料の成
形体である請求項１のソフトフェライトあるいはそれを
担持させた陶磁器質材料の製造方法。2. The method for producing a soft ferrite or a ceramic material supporting the soft ferrite according to claim 1, wherein the raw material molded body is a metal oxide mixture having a soft ferrite composition or a molded body of a ceramic raw material to which the mixture is added.
のソフトフェライトあるいはそれを担持させた陶磁器質
材料の製造方法。3. The gas furnace according to claim 1, wherein the single furnace is a gas furnace.
Method for producing soft ferrite or ceramic material supporting the same.
囲気である請求項１、２または３のソフトフェライトあ
るいはそれを担持させた陶磁器質材料の製造方法。4. The method for producing a soft ferrite or a ceramic material supporting the soft ferrite according to claim 1, wherein the atmosphere is a reduction firing atmosphere having a carbon monoxide concentration of 1% or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11012322A JP2000211966A (en) | 1999-01-20 | 1999-01-20 | Production of soft ferrite or porcelain material supporting the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11012322A JP2000211966A (en) | 1999-01-20 | 1999-01-20 | Production of soft ferrite or porcelain material supporting the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000211966A true JP2000211966A (en) | 2000-08-02 |
Family
ID=11802090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11012322A Withdrawn JP2000211966A (en) | 1999-01-20 | 1999-01-20 | Production of soft ferrite or porcelain material supporting the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000211966A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109400144A (en) * | 2018-11-08 | 2019-03-01 | 安徽龙磁科技股份有限公司 | A method of high performance magnet is prepared with wet pressing permanent-magnet ferrite reclaimed materials |
-
1999
- 1999-01-20 JP JP11012322A patent/JP2000211966A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109400144A (en) * | 2018-11-08 | 2019-03-01 | 安徽龙磁科技股份有限公司 | A method of high performance magnet is prepared with wet pressing permanent-magnet ferrite reclaimed materials |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3109215B1 (en) | Mineralizer for calcium sulfoaluminate ternesite cements | |
| EP2842922B1 (en) | Fluxes/Mineralizers for calcium sulfoaluminate cements | |
| Alanyali et al. | Concrete produced by steel‐making slag (basic oxygen furnace) addition in portland cement | |
| DE50311421D1 (en) | SOFT MAGNETIC POWDER COMPOSITE MATERIAL; METHOD FOR THE PRODUCTION THEREOF AND ITS USE | |
| Agrafiotis et al. | Self-propagating high-temperature synthesis of MnZn-ferrites for inductor applications | |
| JP2000211966A (en) | Production of soft ferrite or porcelain material supporting the same | |
| US9212098B2 (en) | Blend for the production of a refractory material, a refractory material, a method for the manufacture of a refractory material, and use of a substance as a sintering aid | |
| CN116178033B (en) | A method for preparing refractory bricks using aluminum ash and products thereof | |
| JPH10279312A (en) | Spinel type ferrite | |
| Szépvölgyi et al. | RF thermal plasma synthesis of ferrite nanopowders from metallurgical wastes | |
| CN115732151A (en) | Ferrite sintered magnet | |
| Nagy et al. | Oxide transformation during preparation of black pottery in Hungary | |
| Isteri | Alternative ye’elimite (CSA) cement clinkers from industrial byproducts | |
| Hwang et al. | Design and modify the combustion synthesis method to synthesize ceramic oxide powders. | |
| Hertel et al. | Large-scale valorization of bauxite residue for inorganic polymers | |
| CA2761252A1 (en) | Method for manufacturing artificial lightweight aggregate using cold and hot rolling mill sludge | |
| Castillo et al. | Leaching behavior and alkali activation potential of copper and black slags: compliance and pH-dependence test, and development of alkali-activated pastes | |
| SU954463A1 (en) | Method for producing magnetite pellets | |
| García et al. | Effect of cycled combustion ageing on a cordierite burner plate | |
| Vandenberghe et al. | Mössbauer effect study of fly and bottom ashes from an electric generating plant | |
| US4892672A (en) | Process for controlling ferrous iron content in manganese zinc ferrite | |
| CN100377266C (en) | Ferrite magnet and manufacturing method thereof | |
| JP2000211964A (en) | Production of porcelain material for absorbing electromagnetic waves on which soft ferrite is supported | |
| CN109133899A (en) | A kind of high-frequency and low-consumption magnesium doping manganese-zinc ferrite and preparation method thereof | |
| JP2005089281A (en) | Electromagnetic wave absorption material using waste |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20060404 |