KR900001490B1 - Process for production of fenoso-ferric oxide containing cobalt for magnetic recording - Google Patents
Process for production of fenoso-ferric oxide containing cobalt for magnetic recording Download PDFInfo
- Publication number
- KR900001490B1 KR900001490B1 KR1019870015488A KR870015488A KR900001490B1 KR 900001490 B1 KR900001490 B1 KR 900001490B1 KR 1019870015488 A KR1019870015488 A KR 1019870015488A KR 870015488 A KR870015488 A KR 870015488A KR 900001490 B1 KR900001490 B1 KR 900001490B1
- Authority
- KR
- South Korea
- Prior art keywords
- magnetic recording
- ferric oxide
- fenoso
- production
- oxide containing
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 238000000034 method Methods 0.000 title description 6
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 title description 2
- 229910017052 cobalt Inorganic materials 0.000 title 1
- 239000010941 cobalt Substances 0.000 title 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 title 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 4
- 239000001301 oxygen Substances 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract description 3
- 238000001914 filtration Methods 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 239000002351 wastewater Substances 0.000 claims description 10
- 238000005554 pickling Methods 0.000 claims description 9
- 235000013980 iron oxide Nutrition 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 3
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 claims description 2
- 238000009987 spinning Methods 0.000 claims 1
- 239000003513 alkali Substances 0.000 abstract description 3
- 239000002253 acid Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- -1 iron ions Chemical class 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 239000011882 ultra-fine particle Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/08—Ferroso-ferric oxide [Fe3O4]
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
- Compounds Of Iron (AREA)
Abstract
Description
본 발명은 강의 산세폐수를 이용한 자기 기록용 자성 산화철 (磁氣 記錄用 磁性 酸化鐵)의 제조 방법에 관한 것이다.The present invention relates to a method for manufacturing magnetic iron oxide for magnetic recording using pickling wastewater of steel.
국내 제강업계에서는 제품의 물성을 향상시킬 목적으로 강재의 가공전에 강재 표면의 산화철을 제거하여야 하는바, 이에는 진동방식과 산처리 방식 등이 있었다. 일반적으로는, 강재표면을 균일하고 신속하게 세척할 수 있는 산처리 방식을 많이 이용하고 있으며, 여기에서 발생하는 산세 폐수는 다음 반응식으로 생성되어 식수, 지하수 또는 해수 등을 오염시키고 있는 설정이다.In the domestic steel industry, iron oxides on the surface of steels should be removed before processing steels for the purpose of improving the properties of products. In general, the acid treatment method for cleaning the steel surface uniformly and quickly is used a lot, and the pickling wastewater generated here is a setting that is contaminated with drinking water, groundwater or seawater by the following reaction equation.
Fe산화물+2H+→ Fe2++ H2O Fe oxide + 2 H + → Fe 2 + + H 2 O
2Fe산화물+6H+→ 2Fe3++ 3H2O2Fe oxide + 6H + → 2Fe 3+ + 3H 2 O
강의 산세처리는 주로 전자와 같이 반응하며, 극히 소량은 후자와 같이 반응하는데 보통 12%정도의 철을 용해한 폐수로 생성된다.The pickling process of steels reacts mainly with the former, with very small amounts reacting with the latter, usually produced from waste water with 12% iron dissolved.
이와 같은 수질오염을 방지하는 종래의 방법은 주로 산세폐수를 가열하여 중금속을 농축시킴으로서 폐수로부터 2가철염 또는 3가철염으로 분해하는 방법을 사용하여 왔으나, 이는 가열 및 농축에 장시간 소요될뿐만아니라 산물의 바가가치도 매우 낮아 비Conventional methods of preventing such water pollution have been mainly used to decompose wastewater into ferric or trivalent salts by heating pickling wastewater to concentrate heavy metals. Very low value for money
본 발명은 위와 같은 강의 산세폐수에 의한 수질오염을 방지하고 그 산물을 부가가치가 높은 초미립의 자기기록용 자성 산화철을 제조하는 방법에 관한 것이다. 강의 산세폐수는 주로 Fe2+와 극히 일부가 Fe3+로 구성되어 있는바, 이에 공기중의 산소를 반응시켜 Fe2+와 Fe3+를 1 : 0.003∼2의 혼합비로 조절하고 CO2+만을 Fe2+성분의 0.03∼0.06중량비로 첨가하여 알카리용액으로 pH 9∼12에서 15∼90℃로 30분 정도 교반하여 스피넬(spinel)화 시킨후 여과하여 건조하면 초미립의 자기 기록용 자성 산화철을 얻는다. 이것은 내열성만 없을 뿐 300Oe 이상의 보자력을 갖는다.The present invention relates to a method for preventing water pollution by pickling wastewater of steel as described above and producing the ultrafine particles of magnetic recording magnetic iron oxide having high added value. The pickling waste water of steel is mainly composed of Fe 2+ and Fe 3+ , and the oxygen is reacted with oxygen in the air to adjust Fe 2+ and Fe 3+ to the mixing ratio of 1: 0.003 ~ 2 and CO 2+ Bay is added in an amount of 0.03 to 0.06 of the Fe 2+ component, stirred with an alkaline solution at pH 9-12 at 15-90 ° C. for 30 minutes, spinelized, filtered and dried, and ultrafine magnetic iron oxide for magnetic recording is obtained. Get It is not only heat resistant but has a coercive force of 300Oe or more.
CO2+성분비는 0.03에서 0.06까지 CO2+성분비가 증가할수록 보자력은 증가하였다. CO2+성분비가 0∼0.025까지는 보자력이 80∼250Oe로 매우 낮았으며 0.06이상에서는 보자력이 크게 향상되지 않았다.CO 2+ component ratio is more the CO 2+ component ratio increased from 0.03 to 0.06 the coercive force was increased. The coercive force was very low as 80 to 250Oe until the CO 2+ component ratio was 0 to 0.025, and the coercive force was not significantly improved at 0.06 or more.
[실시예 1]Example 1
산세폐수중 Fe2+와 Fe3+를 1 : 1의 혼합비로 조절하고 CO2+를 Fe2+성분의 0.06중량비로 첨가하여 알카리 용액으로 pH 10이 되도록 조절한 다음 90℃에서 30분간 교반하여 스피넬와 시킨후 여과하여 건조하면 보자력700Oe의 초미립 자기 기록용 자성 산화철을 얻는다.Fe 2+ and Fe 3+ in the pickling waste water were adjusted to a mixing ratio of 1: 1, and CO 2+ was added at a ratio of 0.06 weight of Fe 2+ to adjust the pH to 10 with an alkali solution, followed by stirring at 90 ° C. for 30 minutes. Filtration and drying with spinel yields ultrafine magnetic magnetic oxide for magnetic recording of coercive force 700Oe.
위와 같이 본 발명은 강의 산세폐수 중 철이온을 CO2+만을 첨가하여 알카리 침강법으로 처리하여 부가가치가 높은 초미립의 자기기록중 자성 산화철을 제조할 수 있As described above, the present invention can produce magnetic iron oxide in ultrafine magnetic recordings having high added value by treating iron ions in pickling waste water of steel with only CO 2+ by alkali precipitation method.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019870015488A KR900001490B1 (en) | 1987-12-31 | 1987-12-31 | Process for production of fenoso-ferric oxide containing cobalt for magnetic recording |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019870015488A KR900001490B1 (en) | 1987-12-31 | 1987-12-31 | Process for production of fenoso-ferric oxide containing cobalt for magnetic recording |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR890009770A KR890009770A (en) | 1989-08-03 |
| KR900001490B1 true KR900001490B1 (en) | 1990-03-12 |
Family
ID=19267769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019870015488A KR900001490B1 (en) | 1987-12-31 | 1987-12-31 | Process for production of fenoso-ferric oxide containing cobalt for magnetic recording |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR900001490B1 (en) |
-
1987
- 1987-12-31 KR KR1019870015488A patent/KR900001490B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR890009770A (en) | 1989-08-03 |
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