JP5480969B2 - 生ペレット - Google Patents
生ペレット Download PDFInfo
- Publication number
- JP5480969B2 JP5480969B2 JP2012520200A JP2012520200A JP5480969B2 JP 5480969 B2 JP5480969 B2 JP 5480969B2 JP 2012520200 A JP2012520200 A JP 2012520200A JP 2012520200 A JP2012520200 A JP 2012520200A JP 5480969 B2 JP5480969 B2 JP 5480969B2
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- JP
- Japan
- Prior art keywords
- inner core
- layer
- core layer
- raw
- inorganic compound
- 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.)
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- 239000008188 pellet Substances 0.000 title claims description 56
- 239000012792 core layer Substances 0.000 claims description 57
- 239000011247 coating layer Substances 0.000 claims description 37
- 150000002484 inorganic compounds Chemical class 0.000 claims description 33
- 229910010272 inorganic material Inorganic materials 0.000 claims description 33
- 239000003575 carbonaceous material Substances 0.000 claims description 22
- 238000002485 combustion reaction Methods 0.000 claims description 21
- 239000011241 protective layer Substances 0.000 claims description 21
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 20
- 239000010410 layer Substances 0.000 claims description 14
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 239000000155 melt Substances 0.000 description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 238000006722 reduction reaction Methods 0.000 description 11
- 230000009467 reduction Effects 0.000 description 10
- 238000010405 reoxidation reaction Methods 0.000 description 9
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 5
- 235000011941 Tilia x europaea Nutrition 0.000 description 5
- 238000010304 firing Methods 0.000 description 5
- 239000004571 lime Substances 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- 239000012256 powdered iron Substances 0.000 description 5
- 238000005245 sintering Methods 0.000 description 5
- 239000000292 calcium oxide Substances 0.000 description 4
- 235000012255 calcium oxide Nutrition 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 229910000514 dolomite Inorganic materials 0.000 description 2
- 239000010459 dolomite Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- WETINTNJFLGREW-UHFFFAOYSA-N calcium;iron;tetrahydrate Chemical compound O.O.O.O.[Ca].[Fe].[Fe] WETINTNJFLGREW-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/26—After-treatment of the shaped fuels, e.g. briquettes
- C10L5/32—Coating
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/244—Binding; Briquetting ; Granulating with binders organic
- C22B1/245—Binding; Briquetting ; Granulating with binders organic with carbonaceous material for the production of coked agglomerates
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Powder Metallurgy (AREA)
Description
本発明に係る生ペレットの第一番目の実施形態を図1に基づいて説明する。
本発明に係る生ペレットの第二番目の実施形態を図2に基づいて説明する。ただし、前述した第一番目の実施形態の場合と同様な部分については、前述した第一番目の実施形態の説明で用いた符号と同様な符号を用いることにより、第一番目の実施形態での説明と重複する説明を省略する。
11 内核層
12 被覆層
12a 保護層
12b 燃焼層
20 生ペレット
22 被覆層
Claims (4)
- 酸化鉄含有原料と還元用炭材と造滓剤とを含有する内核層と、前記内核層の表面を包囲するように設けられた被覆層とを備えてなる生ペレットであって、
前記被覆層が、750℃以上1100℃未満の融点を有する無機化合物と、燃焼用炭材とを含有してなるものである
ことを特徴とする生ペレット。 - 請求項1に記載の生ペレットにおいて、
前記被覆層の前記無機化合物が、アルカリ金属酸化物を含有するものである
ことを特徴とする生ペレット。 - 請求項2に記載の生ペレットにおいて、
前記内核層の重量に対する割合で前記アルカリ金属酸化物を0.15〜1.5重量%含有するように、前記被覆層が前記無機化合物を有している
ことを特徴とする生ペレット。 - 請求項1から請求項3のいずれか一項に記載の生ペレットにおいて、
前記被覆層が、
前記内核層の表面を包囲するように設けられた前記無機化合物を含有する保護層と、
前記保護層の表面を包囲するように設けられた前記燃焼用炭材を含有する燃焼層と
からなることを特徴とする生ペレット。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2010/060159 WO2011158338A1 (ja) | 2010-06-16 | 2010-06-16 | 生ペレット |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2011158338A1 JPWO2011158338A1 (ja) | 2013-08-15 |
JP5480969B2 true JP5480969B2 (ja) | 2014-04-23 |
Family
ID=45347763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012520200A Active JP5480969B2 (ja) | 2010-06-16 | 2010-06-16 | 生ペレット |
Country Status (5)
Country | Link |
---|---|
US (1) | US9273262B2 (ja) |
JP (1) | JP5480969B2 (ja) |
CN (1) | CN102939395B (ja) |
DE (1) | DE112010005664B4 (ja) |
WO (1) | WO2011158338A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015005190A1 (ja) * | 2013-07-10 | 2015-01-15 | Jfeスチール株式会社 | 焼結鉱製造用の炭材内装造粒粒子とその製造方法および焼結鉱の製造方法 |
CN104726630A (zh) * | 2015-03-25 | 2015-06-24 | 甘肃酒钢集团宏兴钢铁股份有限公司 | 转炉用高碱度复合金属化球团及其生产工艺 |
US10550445B2 (en) | 2015-07-07 | 2020-02-04 | Sabic Global Technologies B.V. | Coated iron ore pellets and a process of making and reducing the same to form reduced iron pellets |
WO2017183666A1 (ja) * | 2016-04-22 | 2017-10-26 | 住友金属鉱山株式会社 | 酸化鉱石の製錬方法 |
EP3778936B1 (en) | 2016-04-27 | 2024-01-10 | Sumitomo Metal Mining Co., Ltd. | Nickel oxide ore smelting method for smelting ferronickel |
US11427877B2 (en) * | 2017-09-21 | 2022-08-30 | Nucor Corporation | Direct reduced iron (DRI) heat treatment, products formed therefrom, and use thereof |
DE102020116425A1 (de) | 2020-06-22 | 2021-12-23 | Salzgitter Flachstahl Gmbh | Verfahren zur Herstellung von Rohstahl mit niedrigem N-Gehalt |
CN114737011B (zh) * | 2022-04-14 | 2023-08-11 | 首钢集团有限公司 | 一种转炉用造渣剂及降低转炉石灰消耗的方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63312920A (ja) * | 1987-06-17 | 1988-12-21 | Kawasaki Steel Corp | 酸化防止性に優れた塊状物の製造方法 |
JP2000087149A (ja) * | 1998-09-08 | 2000-03-28 | Kobe Steel Ltd | 鉄鉱石ペレット製造方法 |
JP2000192154A (ja) * | 1998-12-24 | 2000-07-11 | Sumitomo Metal Ind Ltd | 部分還元ペレットの製造方法 |
JP2003129142A (ja) * | 2001-10-24 | 2003-05-08 | Kobe Steel Ltd | 酸化金属塊成物の製造方法 |
JP2005194544A (ja) * | 2003-12-26 | 2005-07-21 | Jfe Steel Kk | 半還元塊成鉱の製造方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB818615A (en) * | 1957-06-03 | 1959-08-19 | Illinois Clay Products Co | Method of strengthening iron ore agglomerates |
JPS5110167B1 (ja) * | 1971-03-12 | 1976-04-02 | ||
DE2306647A1 (de) * | 1973-02-10 | 1974-08-15 | Werner Wenzel | Verfahren zum einschmelzen von eisenschwamm |
US3975182A (en) * | 1973-08-09 | 1976-08-17 | United States Steel Corporation | Pellets useful in shaft furnace direct reduction and method of making same |
US4042375A (en) * | 1974-10-14 | 1977-08-16 | Ici Australia Limited | Roasting process for the direct reduction of ores |
CA2251339A1 (en) * | 1997-10-30 | 1999-04-30 | Hidetoshi Tanaka | Method of producing iron oxide pellets |
JP2001342509A (ja) * | 2000-06-02 | 2001-12-14 | Kobe Steel Ltd | 金属鉄の製造方法および装置 |
JP4391841B2 (ja) | 2004-02-05 | 2009-12-24 | 三菱日立製鉄機械株式会社 | 還元鉄成型体の製造方法 |
-
2010
- 2010-06-16 WO PCT/JP2010/060159 patent/WO2011158338A1/ja active Application Filing
- 2010-06-16 DE DE112010005664.1T patent/DE112010005664B4/de active Active
- 2010-06-16 US US13/701,727 patent/US9273262B2/en not_active Expired - Fee Related
- 2010-06-16 CN CN201080067390.4A patent/CN102939395B/zh active Active
- 2010-06-16 JP JP2012520200A patent/JP5480969B2/ja active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63312920A (ja) * | 1987-06-17 | 1988-12-21 | Kawasaki Steel Corp | 酸化防止性に優れた塊状物の製造方法 |
JP2000087149A (ja) * | 1998-09-08 | 2000-03-28 | Kobe Steel Ltd | 鉄鉱石ペレット製造方法 |
JP2000192154A (ja) * | 1998-12-24 | 2000-07-11 | Sumitomo Metal Ind Ltd | 部分還元ペレットの製造方法 |
JP2003129142A (ja) * | 2001-10-24 | 2003-05-08 | Kobe Steel Ltd | 酸化金属塊成物の製造方法 |
JP2005194544A (ja) * | 2003-12-26 | 2005-07-21 | Jfe Steel Kk | 半還元塊成鉱の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
DE112010005664T5 (de) | 2013-04-04 |
CN102939395A (zh) | 2013-02-20 |
JPWO2011158338A1 (ja) | 2013-08-15 |
CN102939395B (zh) | 2016-09-07 |
US9273262B2 (en) | 2016-03-01 |
US20130111809A1 (en) | 2013-05-09 |
DE112010005664B4 (de) | 2020-06-10 |
WO2011158338A1 (ja) | 2011-12-22 |
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