TR201801470T1 - Sintered ore production method. - Google Patents
Sintered ore production method. Download PDFInfo
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- TR201801470T1 TR201801470T1 TR2018/01470T TR201801470T TR201801470T1 TR 201801470 T1 TR201801470 T1 TR 201801470T1 TR 2018/01470 T TR2018/01470 T TR 2018/01470T TR 201801470 T TR201801470 T TR 201801470T TR 201801470 T1 TR201801470 T1 TR 201801470T1
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- sintering
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- sintered ore
- granulation
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 239000002245 particle Substances 0.000 claims abstract description 74
- 238000002156 mixing Methods 0.000 claims abstract description 61
- 238000005245 sintering Methods 0.000 claims abstract description 61
- 239000002994 raw material Substances 0.000 claims abstract description 41
- 238000005469 granulation Methods 0.000 claims abstract description 36
- 230000003179 granulation Effects 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 30
- 238000002203 pretreatment Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000012256 powdered iron Substances 0.000 claims description 19
- 235000019738 Limestone Nutrition 0.000 claims description 17
- 239000006028 limestone Substances 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 12
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 10
- 239000011361 granulated particle Substances 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 6
- 239000000920 calcium hydroxide Substances 0.000 claims description 6
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 6
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 6
- 239000000292 calcium oxide Substances 0.000 claims description 5
- 235000012255 calcium oxide Nutrition 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000000446 fuel Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 42
- 229910052742 iron Inorganic materials 0.000 abstract description 21
- 239000000843 powder Substances 0.000 abstract description 19
- 239000008188 pellet Substances 0.000 description 20
- 150000001875 compounds Chemical class 0.000 description 10
- 238000009826 distribution Methods 0.000 description 9
- 238000002360 preparation method Methods 0.000 description 9
- 239000000428 dust Substances 0.000 description 8
- 239000008187 granular material Substances 0.000 description 8
- 238000005315 distribution function Methods 0.000 description 6
- 239000011362 coarse particle Substances 0.000 description 5
- 239000000571 coke Substances 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 239000010419 fine particle Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000001788 irregular Effects 0.000 description 4
- 239000004449 solid propellant Substances 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 238000007781 pre-processing Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 241000157855 Cinchona Species 0.000 description 1
- 235000001258 Cinchona calisaya Nutrition 0.000 description 1
- NWBJYWHLCVSVIJ-UHFFFAOYSA-N N-benzyladenine Chemical compound N=1C=NC=2NC=NC=2C=1NCC1=CC=CC=C1 NWBJYWHLCVSVIJ-UHFFFAOYSA-N 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 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
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 239000007771 core particle Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013325 dietary fiber Nutrition 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000009699 high-speed sintering Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 125000003410 quininyl group Chemical group 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/12—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in rotating drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/14—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in rotating dishes or pans
-
- 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
- C22B1/16—Sintering; Agglomerating
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Glanulating (AREA)
Abstract
Amaç:Bir sinterli cevher üretmek için ham madde olarak ince toz demir cevherleri kullanıldığında yeterli yarı partikül granüle edilerek bir sinterleme makinesinde (14) üretkenliği artırabilen bir sinterli cevher üretim yöntemi temin etmek. Çözüm: Bir sinterleme ham maddesi (11) granüle edilerek ve daha sonra bir sinterleme makinesinde (14) sinterlenerek bir sinterli cevher üretme yönteminde, bir yüksek hızlı karıştırma cihazıyla (12) en fazla 125 µm?lik bir partikül büyüklüğüne sahip olan %10-50 kütlelik bir ince toz demir cevheri içeren bir sinterleme ham maddesinin (11) bir ön işlemi yapılır ve sonra bir granülasyon cihazıyla granülasyon gerçekleştirilir.Objective: To provide a sintered ore production method that can increase productivity in a sintering machine (14) by granulating enough semi-particles when fine powder iron ores are used as raw materials to produce a sintered ore. Solution: In a method of producing a sintered ore by granulating a sintering raw material (11) and then sintering in a sintering machine (14), a high speed mixing device (12) with a particle size of up to 125 µm with a particle size of max. a pre-treatment of a sintering raw material (11) comprising a bulk fine iron ore and then granulation is performed with a granulation device.
Description
TARIFNAME TEKNIK SAHA Bu bulus, bir yüksek firin için ham madde olarak kullanilan ve sinterleine için bir hani maddenin granüle edilmesinden sonra DL tipi bir sinterleme inakinesi, vb. kullanilarak üretilen bir sinterli cevherin üretim yöntemiyle ilgilidir. DESCRIPTION TECHNICAL FIELD This invention is used as raw material for a blast furnace and DL type after granulating a particular material for sinterleine a sintering machine, etc. of a sintered ore produced using relates to the method of production.
ILGILI TEKNIK Bir sinterli cevher, çok sayida markadan toz demir cevheri (genelde, yaklasik 125-1000 um partikül büyüklügüne sahip sinter beslemesi olarak adlandirilir) uygun miktarlarda kireçtasi, silika, serpentin, Vb. gibi yardimci malzemeyle, toz, kisir, artik cevher, vb. gibi muhtelif malzeme tozuyla ve kok tozu, vb. gibi kati yakitla harinanlanarak, elde edilen sinterleme ham bilesik hazirlama malzemesine su ilave edilerek, bunlar karistirilip granüle edilerek ve sonra elde edilen ham granülasyon malzemesi yakinaniii gerçeklestirilmesi için bir sinterleme makinesine yüklenerek üretilir. Sinterleme amaçli ham bilesik hazirlama malzemesi genelde su içerdiginden, granülasyonda küinelendirilerek yari partiküller olusturulur. Daha sonra, yari partiküllerden olusan ham graiiülasyon malzemesi bir sinterleme makinesinin paleti üstüne Wklendiginde, yüklenen sinterleme ham maddesi tabakasinda iyi havalandirina saglama görevi görür ve böylece düzgün bir sinterleme reaksiyonunu tesvik eder. RELATED TECHNIQUE A sintered ore is a powdered iron ore of several brands (usually, sinter feed with a particle size of about 125-1000 µm It is called as the appropriate amount of limestone, silica, serpentine, Etc. with auxiliary materials such as powder, barren, residual ore, etc. miscellaneous like with material dust and coke dust, etc. by being treated with solid fuel like adding water to the obtained sintering raw compound preparation material by mixing and granulating them, and then the crude obtained granulation material approximation It is produced by loading into the sintering machine. Raw for sintering Since the compound preparation material usually contains water, By curing, semi-particles are formed. Later, half The raw graining material consisting of particles is a sintering When placed on the pallet of the machine, the loaded sintering raw material It acts as providing good ventilation in the material layer and thus promoting a smooth sintering reaction.
Son yillarda, yüksek kaliteli demir cevherlerinin tükeninesinden dolayi sinterleme amaçli toz demir cevherlerinin kalitesi düsmüstür. In recent years, due to the depletion of high-quality iron ores, Therefore, the quality of fine iron ores for sintering has decreased.
Yani, demir cevherindeki bozulma cüruf bileseninde bir artis ve/veya partikül büyüklügünde azalma yaratma egiliinindedir ve bu sebeple alümin içerigindeki artistan veya ince partikül büyüklügü oranindaki artistan dolayi granülasyon özelligi bozulur. Diger taraftan, yüksek firinda eriyik demir üretim maliyetinin azaltilmasi veya üretilen C02 miktarinin azaltilmasi açisindan bakildiginda, yüksek firinda kullanilan siiiterli demir cevherinin düsük cüruf oranina, yüksek indirgenebilirlige ve yüksek mukavemete sahip olmasi talep edilmektedir. That is, deterioration in iron ore results in an increase in the slag component and/or tends to produce a reduction in particle size and therefore artistan in alumina content or in the ratio of fine particle size Because of the artist, the granulation feature is impaired. On the other hand, high Reducing the cost of producing molten iron in the furnace or C02 produced in terms of reducing the amount of the low slag ratio of the liquid tempered iron ore used, the high demand for reducibility and high strength is being done.
Sinterleme amaçli demir cevherlerini çevreleyen böyle bir ortamda, son yillarda pelet beslemesi olarak adlandirilan pelet amaçli, zor granüle olan ince toz demir cevherleri kullanilarak yüksek kaliteli sinterli cevher üretimi için bir teknik önerilir. Geleneksel tekniklerden biri 'Örnegin bir hibrit peletlenmis sinter yöntemidir (bu dokümanda bundan böyle “HPS yöntemi” olarak anilacaktir). Bu teknikte, pelet beslemesi gibi yüksek miktarda ince toz demir cevheri içeren siiiterleme amaçli ham bilesik hazirlama malzemesi bir tamburlu mikserle ve bir peletleyiciyle granüle edilerek, düsük bir cüruf oranina ve yüksek indirgenebilirlige sahip bir sinterli cevher üretilir (Patent Dokümani l, Patent Dokümani 2, Patent Dokümani 3, Patent Dokümani 4, Patent Doküinani 5). In such an environment surrounding iron ores for sintering, Pellet-purpose, difficult-to-use pellet feed, which has been called pellet feed in recent years using high-grade fine powder iron ores that are granulated A technique is proposed for the production of sintered ore. traditional techniques one is 'For example, a hybrid pelletized sinter method (in this document) hereinafter referred to as the “HPS method”). In this technique, the pellet containing high amounts of fine powdered iron ore, such as Raw compound preparation material for curing with a drum granulated with a mixer and a pelletizer to a low slag ratio. and a sintered ore with high reducibility is produced (Patent Document 1, Patent Document 2, Patent Document 3, Patent Document 4, Patent Documentation 5).
Baska bir teknik olarak, sinterleme ham maddesi tozunun granülasyon adimindan önce nem kontrolü için bir yüksek hizli döner mikserle karistirilmasi yöntemi (Patent Dokümani 6), granülasyon adimindan önce bir karistirma mikseriyle ince toz demir cevheri ve demir yapma tozlarinin karistirilmasi için bir 'Ön karistirma yöntemi (Patent Dokümani 7), ince tozlarin (pelet beslemeleri) bir Eirich mikseriyle bir ön karistirmaya tabi tutulmasi ve sonra bunlarin bir tamburlu mikserde graiiüle edilmesi yöntemi (Patent Dokümani 8) ve en az %60 kütle oraninda en fazla 250 um partikül büyüklügüne sahip partiküller içeren demir cevheri ham maddelerinin yogurulmasi ve sonra bunlarin bir tamburlu mikserde granüle edilmesi yöntemi (Patent Dokümani 9) önerilir. As another technique, granulation of sintering raw material powder with a high speed rotary mixer for moisture control before step mixing method (Patent Document 6), from the granulation step fine powdered iron ore and iron making with a mixing mixer first A 'Pre-mixing method (Patent) for mixing powders Document 7), fine powders (pellet feeds) with an Eirich mixer premixing and then mixing them with a drum. method (Patent Document 8) and at least 60% particles with a maximum particle size of 250 µm in the mass ratio kneading of iron ore raw materials containing method of granulation in a drum mixer (Patent Document 9) recommended.
ONCEKI TEKNIGE AIT DOKUMANLAR PATENT DOKUMANLARI Patent Dokümani l: JP-B-H02-4658 Patent Dokümani 2: JP-B-H06-21297 Patent Dokümani 3: JP-B-H06-21298 Patent Dokümani 4: `IP-B-H06-21299 Patent Dokümani 5: JP-B-H06-60358 Patent Dokümani 6: JP-A-860-52534 Patent Dokümani 7: JP-A-H01-312036 Patent Dokümani 8: JP-A-H07-331324 BULUSUN OZETI BULUSLA ÇOZULECEK SORUN Bununla birlikte, pelet beslemesi, vb. gibi yüksek miktarda ince toz demir cevheri, özellikle de ultra ince toz demir cevherleri içeren sinterleme ainaçli ham bilesik hazirlama malzemesi yukarida sözü edilen Patent Dokümani 1-5”te açiklandigi gibi HPS yöntemiyle granüle edildiginde veya yukarida sözü edilen Patent Dokümani 6- 9°da açiklandigi gibi yüksek hizli karistirma cihazi, vb.°yle önceden bir karistirma islemine tabi tutuldugunda, asagidaki sorunlar mevcuttur. PRIOR ART DOCUMENTS PATENT DOCUMENTS Patent Document 1: JP-B-H02-4658 Patent Document 2: JP-B-H06-21297 Patent Document 3: JP-B-H06-21298 Patent Document 4: `IP-B-H06-21299 Patent Document 5: JP-B-H06-60358 Patent Document 6: JP-A-860-52534 Patent Document 7: JP-A-H01-312036 Patent Document 8: JP-A-H07-331324 SUMMARY OF THE INVENTION THE PROBLEM TO BE SOLVED WITH THE INVENTION However, pellet feed, etc. high amount of fine dust, such as containing iron ore, especially ultrafine fine iron ores sintering purpose raw compound preparation material mentioned above by HPS method as explained in Patent Document 1-5. granulated or the above-mentioned Patent Document 6- with a high-speed mixing device, etc., as described in 9°. when subjected to a mixing process, the following problems available.
Bu geleneksel yöntemlerde, Sekil l°de gösterildigi gibi, ince partiküllere (0,5 mm°den küçük) ek olarak yüksek miktarda kaba yari partiküller (10 mm”den büyük) üretilir. Bunun sebebi, islatilabilirlik pelet beslemesi gibi ince toz demir cevherindekiyle ayni oldugunda, daha ince partiküllerin büyük spesifik yüzey alanina sahip olmasi ve böylece kolayca su absorbe etmesi ve bu partiküller arasinda yüksek miktarda suyu kolayca tutmasi ve dolayisiyla suyun tercihen münferit ince toz demir cevherleri tarafindan absorbe edilmesidir. Sonuç olarak, ince partiküller basitçe bir araya gelir veya bir çekirdek partikül çevresinde kolayca yapisinis ince partiküller formunda düzensiz partikül büyüklüklerine sahip kaba yari partiküller üretme egiliminde olur. Ayrica, bu geleneksel yöntemlerde toz yapismasi sorunu ve ayni zamanda ince tozlarin ve suyun homojen dispersiyonunuii zayiflayarak ekipman kullanilabilirliginde azalmaya yol açma sorunu mevcuttur. In these traditional methods, as shown in Figure 1, thin In addition to particles (less than 0.5 mm°), a large amount of coarse semiconductors particles (greater than 10 mm) are produced. This is because wettability when the same as in fine powder iron ore, such as pellet feed, finer particles have larger specific surface area and Thus, it easily absorbs water and has a high density among these particles. it can easily hold large amount of water and therefore water preferably individually. is absorbed by fine powdered iron ores. Conclusion As a result, fine particles simply coalesce or form a nucleus. in the form of fine particles that adhere easily around the particle generating coarse semiparticles with irregular particle sizes it tends to. In addition, powder adhesion in these traditional methods problem, as well as the homogeneity of fine powders and water. reduce equipment usability by weakening its dispersion. There is a pagination problem.
Bu nokta ayni zamanda bulus sahipleri tarafindan gerçeklestirilen asagidaki deneyden açikça anlasilabilir. Bu deneyde, ilk olarak, elde edilen granüle partiküllerin (yari partiküller) partikül büyüklügü dagilimini ve pelet beslemesi partikül büyüklügü dagilimini ölçmek için pelet beslemesi, Vb. gibi zor granüle olan ince toz demir cevheri içeren bir ham bilesik hazirlama malzemesi (vanadyum içerigi: %40 kütle) granüle edilir. Sonuçlar Sekil 2'de gösterilmistir. Sekil 2(a)”da gösterildigi gibi, siiiterleme amaçli ham bilesik hazirlama malzemesi yüksek miktarda pelet beslemesi içerdiginde, bilesigi olusturan kaba partiküllerin (8 mm°den büyük) orani, pelet beslemesi içermeyen duruma göre daha yüksek olur. Bunun agirlik orani yaklasik %75 kütleye ulasir. Ayni zamanda, granüle yari partiküllerdeki pelet beslemesinin partikül büyüklügü dagilimi (Sekil 2(b)) granüle partiküllerin partikül büyüklügü dagiliiniyla ayni egiliini gösterir (Sekil 2(a)). Yani, kaba partiküllerdeki pelet beslemesi oraninin yaklasik %80 kütle kadar yüksek oldugu ve pelet beslemesinin çogunun eksantrik olarak kaba partiküllerde bulundugu görülebilir. Bu gerçekten hareketle, kaba yari partiküllerin karsilikli pelet besleinelerinin kümelenmesinden olustugu görülebilir. Ayrica, kaba partikül bölgesine ait yari partiküllerin su. içerigiiiin yüksek oldugu görülebilir (Sekil 2(b)). Bu gerçekten hareketle, suyun tercihen pelet beslemesi tarafindan absorbe edildigi ve kaba yari partiküllerin karsilikli pelet beslemelerinin kümelenniesinden olustugu, dolayisiyla kaba yari partiküllerde yüksek miktarda su absorbe edildigi görülebilir. This point is also made by the inventors. can be clearly understood from the following experiment. In this experiment, first, particle size of granulated particles (semi-particles) measure the particle size distribution of the pellet feed for pellet feed, etc. fine powdered iron ore that is difficult to granulate, such as A raw compound preparation material (vanadium content: 40%) containing mass) is granulated. The results are shown in Figure 2. In Figure 2(a) raw compound preparation material for curing, as shown when it contains a high amount of pellet feed, the roughage forming the compound proportion of particles (greater than 8 mm°) without pellet feed higher depending on the situation. Its weight ratio is about 75% reaches the mass. At the same time, the pellet in granulated semi-particles particle size distribution of the feed (Figure 2(b)) granulated shows the same trend of particles as the particle size distribution (Figure 2(a)). That is, the proportion of pellet feed in coarse particles as high as about 80% mass and pellet feed most of them can be seen to be found in eccentrically coarse particles. This really moving, the reciprocal pellet of coarse semi-particles It can be seen that it consists of aggregation of nutrients. Also, rude water of semiparticles belonging to the particle region. the content is high can be seen (Figure 2(b)). Starting from this fact, the water should preferably be pellets. is absorbed by the feed and coarse semi-particles formed by clusters of reciprocal pellet feeds, therefore high amount of water is absorbed in coarse semi-particles visible.
Pelet beslemesi, vb. gibi yüksek miktarda ince toz demir cevheri içeren ham bilesik hazirlama malzemesi yukarida belirtildigi gibi granüle edildiginde, partikül büyüklügü kaçinilmaz sekilde düzensiz olur ve ayni zamanda, ince tozlar basitçe bir araya gelerek kümelenir, böylece zayif bag mukavemetine sahip kaba yari partiküllerin üretilmesi söz konusu olur. Bu nedenle, bu yan partiküller Sekil 3(a)°da gösterildigi gibi bir sinterleine makinesine yüklendiginde ve makinenin bir paleti üstüne yigildiginda, yüklenen bir sinterleme ham maddesi tabakasi yogun bir yigin yapisi haline gelir ve hacim yogunlugu artar. Ayrica, kaba yari partiküller sinterleme makinesinin paleti üstüne sabit bir tabaka kalinliginda yigildiginda, yari partiküllere bir yük (sikistirina kuvveti) uygulanirsa kolayca ezilmeye sebep olunur ve dolayisiyla tozlanma nedeniyle gözeneklilik azalir ve hava geçirgenligi bozulur; bu faktörler sinterleme makinesinin isletimini bloke eder. Sonuç olarak, sinterleme süresi uzayarak sinterli cevher verimini düsürür ve üretkenligin azalmasi endisesi ortaya çikar. Hattâ, sinterli cevherin üretim maliyetini artirmak için granülasyonda baglayici olarak kullanilan kireçtasi miktarinin artirilmasi zorunludur ve takip eden adimlarda kok tozu, Vb. gibi bir kati yakit kaplandiginda sinterleme ham maddesi bir bütün halinde kok tozu, vb.°nin mevcudiyet durumu üniform olmaktan çikar. Sonuç olarak, sinterleine hizini düsürmek için hatali yanmaya veya hatali isi verimine sebep olunur. Pellet feed, etc. high amount of fine powdered iron ore such as raw compound preparation material containing when granulated, the particle size is inevitably uneven and at the same time, fine powders simply clump together, so that coarse semi-particles with weak bond strength production takes place. Therefore, these side particles are When loaded into a sinterleine machine as shown in 3(a)° and When a pallet of the machine is stacked on top of it, a loaded sintering raw material layer becomes a dense heap structure and volume density increases. In addition, the coarse semi-particles sintering machine when stacked on top of the pallet with a constant layer thickness, half If a load (force of compression) is applied to the particles, they are easily crushed. and hence porosity is reduced due to dusting and air permeability is impaired; These factors make the sintering machine blocks its execution. As a result, the sintering time is prolonged. reduces ore yield and raises concerns about decreased productivity. interest. In fact, to increase the production cost of sintered ore amount of limestone used as binder in granulation It is mandatory to increase and in the following steps coke dust, Etc. like a When the solid fuel is coated, the sintering raw material as a whole the presence of coke dust, etc., ceases to be uniform. Conclusion In order to reduce the sinterleine rate, it may cause incorrect combustion or incorrect heat. efficiency is caused.
Bu bulusun bir amaci, bir sinterli cevher üretmek için bir ham bilesik hazirlama malzemesi olarak ince toz demir cevherleri kullanildiginda yeterli yari partikül granüle edilerek sinterleme makinesinde üretkenligi artirabilen bir sinterli cevher üretim yöntemi temin etmektir. It is an object of this invention to use a crude compound to produce a sintered ore. when using fine powdered iron ores as preparation material in the sintering machine by granulating enough semi-particle provide a sintered ore production method that can increase productivity is to do.
SORUNUN ÇOZUMU Bulus sahipleri, yukaridaki geleneksel tekniklere `özgü görevler üstünde çesitli çalismalar yapmis ve 'Önceden belirlenmis bir partikül büyüklügüne sahip olan 'Önceden belirlenmis miktarda bir ince toz içeren sinterleme ham maddesi bir yüksek hizli karistirma cihaziyla bir ön isleme tabi tutuldugunda, düzensiz bir partikül büyüklügüne ve takip eden granülasyonda zayif bag mukaveinetine sahip kaba granüle partiküller (yari partiküller) üretilmesini önlemenin mümkün oldugunu ve bu nedenle sinterleme makinesinin üretkenligini artirmak için yeterli yari partikül granüle edilebilecegini bulmustur ve sonuç olarak bulus basarilmistir. PROBLEM SOLUTION The inventors' tasks specific to the above traditional techniques He has done various studies on it and 'A predetermined particle 'A predetermined amount of fine powder The sintering raw material containing When pretreated, it has an irregular particle size and coarse granule with poor bond strength in subsequent granulation possible to prevent the generation of particles (semi-particles) and therefore increase the productivity of the sintering machine. found that sufficient half particles could be granulated for The invention has been published.
Yani, bulus, bir sinterleine ham maddesi granüle edilerek ve daha sonra bir sinterleine makinesinde sinterlenerek bir sinterli cevher üretme yöntemi olup ayirt edici özelligi, bir yüksek hizli karistirma cihaziyla en fazla 125 um°lik bir partikül büyüklügüne sahip olan maddesinin bir ön isleminin yapilmasi ve sonra bir granülasyon cihaziyla granülasyon gerçeklestirilmesidir. That is, the invention is achieved by granulating a sinterleine feedstock and further a sintered ore by sintering in a sinterleine machine production method and its distinguishing feature is a high-speed mixing with a particle size of up to 125 µm a pretreatment of the material and then a granulation granulation is performed with the device.
Bulus konusu bir sinterli cevher üretim yönteminde, asagidakiler daha tercih edilen çözüm araçlaridir: (l) yüksek hizli karistirma cihazinin bir kanatçiginin çevresel hizi U (m/s) oldugunda ve yüksek hizli karistirma cihazinin karistirma süresi t (saniye) oldugunda, `Ön islem 300 < U> karsilayacak sekilde gerçeklestirilir; (2) yüksek hizli karistirma cihazinin bir kanatçiginin çevresel hizi U (in/s) oldugunda ve yüksek hizli karistirina cihazinin karistirma süresi t (saniye) oldugunda, 'Ön islem 400 < U> karsilayacak sekilde gerçeklestirilir; (3) granülasyon cihazi, bir taniburlu mikser ve/veya bir disk peletleyicidir; (4) granülasyon cihaziyla yapilan granülasyon isleminde 'Ön isleinli ham maddeye kireçtasi uygulanir ve elde edilen granüle partiküllerin yüzeylerine kati esasli bir yakit uygulanir; (5) sinterleme ham maddesindeki en az bir malzeme bir kristal su cevheri içerir ve kristal su içerigi en az %4 kütleye ayarlanir; (6) en fazla 125 um'lik bir partikül büyüklügüne sahip ince toz demir cevheri en az %5 kütlelik kireçtasi içerir; (7) uygulanan kireçtasiiia ek olarak, yüksek hizli karistirma cihaziyla islenen sinterleme ham maddesine en fazla %3 kütlelik sönmüs kireç veya sönmemi's kireç eklenir; ve (8) yüksek hizli karistirma cihazinda kullanilaii sinterleme hani maddesindeki ince toz demir cevheri orani en az %30 kütle oldugunda, ham madde bir kurutma islemine tabi tutulur. In a sintered ore production method which is the subject of the invention, the following are more Preferred solution tools are: (l) circumferential coverage of one blade of the high-speed mixer. When the speed is U (m/s) and the high-speed mixer is When the time is t (seconds), `Preprocess 300 < U> carried out to meet; (2) peripheral circumference of one blade of the high-speed mixer. When the speed is U (in/s) and the high-speed stirrer is When time is t (seconds), 'Preprocess 400 < U> carried out to meet; (3) the granulation device, a drum mixer and/or a disc it is a pelletizer; (4) In the granulation process with the granulation device, the 'Pre- Limestone is applied to the processed raw material and the resulting granulated a solid fuel is applied to the surfaces of the particles; (5) at least one material in the sintering raw material is a crystal contains water ore and the crystal water content is adjusted to at least 4% by mass; (6) fine powder with a particle size of up to 125 µm iron ore contains at least 5% by mass of limestone; (7) In addition to applied limestone, high-speed mixing maximum 3% mass to the sintering raw material processed with the slaked lime or slaked lime is added; and (8) sintering han used in high speed mixing device Fine powder iron ore ratio in the substance is at least 30% by mass when the raw material is subjected to a drying process.
BULUSUN ETKISI Bulus, çekirdek partiküller çevresinde yapiskan ince toz demir cevheri, Vb. yapisina ve nispeten düzenli bir partikül büyüklügü ile küçük bir partikül büyüklügü dagiliiniiia sahip olan ince toz demir cevherleriiiin ve ince partikülleriii veya yari partiküllerin güçlü küinelerinden olusan bir ham granüle sinterleme malzemesi üretim yöntemi temin eder. Böyle bir yöntemle elde edilen ham granüle sinterleine malzemesi bir sinterleine makinesinin bir paleti üstüne yüklendiginde, pelet üstünde olusturulan ham granüle sinterleme malzemesinin yüklü tabakasinin yogunlugunun azaltilmasi ve hava geçirgenliginin gelistirilmesiyle baglantili sinterleme süresinin kisaltilmasi, ki yüksek kaliteli sinterli cevher üretiminin gelistirilmesi için etkilidir, saglanabilir. ÇIZIMLERIN KISA TARIFI Sekil 1, ince toz demir cevherlerinden bilesik hazirlamanin mevcut olup olmamasina göre yari partiküllerin partikül büyüklügü dagiliminin bir karsilastirma grafigidir. IMPACT OF THE INVENTION The invention is a fine powder of iron sticky around core particles. ore, Etc. with its structure and a relatively regular particle size. fine powdered iron with a small particle size distribution for ores and fine particles or semi-particles Production of a raw granulated sintering material consisting of quinines provides the method. The raw granules obtained by such a method sinterleine material on a pallet of a sinterleine machine When loaded, sintering into the raw granule formed on the pellet reducing the density of the loaded layer of the material and air The sintering time associated with the improvement of the permeability shortening, which is the development of high-quality sintered ore production It is effective for, it can be provided. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows the preparation of compounds from fine powdered iron ores. particle size of semi-particles according to the presence or absence of is a comparison chart of the distribution.
Sekil 2, yari (granüle) partiküllerin her partikül büyüklügünde pelet beslemesi dagilimini ve su dagilimi durumunu gösteren bir grafiktir. Figure 2 shows the semi (granular) particles in each particle size. displaying the pellet feed distribution and the water distribution status. is graphic.
Sekil 3, granüle partiküllerin geleneksel yigin tabakasi (a) ile bulus konusu granüle partiküllerin bir yigin tabakasi (b) arasindaki bir karsilastirma semasidir. Figure 3, with conventional bulk layer (a) of granulated particles between a bulk layer (b) of the granulated particles of the invention is the comparison chart.
Sekil 4, bulus konusu bir sinterli cevher üretim yöntemini gerçeklestirmek için bir tesis hattinin bir örnegini açiklayan bir sematik görünüstür. Figure 4 shows a sintered ore production method of the invention. an example describing an example of a plant line to perform sematically apparent.
Sekil 5, granülasyon 'Öncesinde bir bu islemin etkisini incelemek için kullanilan bir tesis hattini açiklayan bir sematik görünüstür. Figure 5, granulation 'Before examining the effect of this process A schematic view describing a plant line used for
Sekil 6, harinonik ortalama çap ile ilave karistirma süresi arasindaki iliskiyi gösteren bir grafiktir. Figure 6, Harinonic mean diameter with additional mixing time A graph showing the relationship between
Sekil 7, partikül büyüklügü dagilimi fonksiyonu ile ilave karistirma süresi arasiiidaki iliskiyi gösteren bir grafiktir. Figure 7 is the addition with the particle size distribution function. is a graph showing the relationship between mixing time.
Sekil 8, nispi geçis hava akis hizi ile ilave karistirma süresi arasindaki iliskiyi gösteren bir grafiktir. Figure 8, relative pass airflow rate and additional mixing time A graph showing the relationship between
Sekil 9, çevresel hiz (U) U = 9 1er kosulunda sabitken karistirma süresi (t) t = 0-240 saniye araliginda degistiginde üretim hizi ile U> Sekil 10, karistirma süresi (t) t = 120 saniye kosulunda sabitken çevresel hiz (U) U = 0-18 m/s araliginda degistiginde üretim hizi ile U> Sekil 11, çevresel hiz (U) U = 6 ni/s kosulunda sabitken karistirma süresi (t) t = 0-240 saniye araliginda degistiginde üretim hizi ile U> Sekil 12, U> 28 in/s ile gösterildiginde dagiliin duruinunu gösteren bir grafiktir. Figure 9, with peripheral velocity (U) constant at U = 9 1er Production when mixing time (t) t = 0-240 seconds with speed U> Figure 10, with the mixing time (t) constant at t = 120 seconds with the production speed when the peripheral speed (U) U = 0-18 m/s U> Figure 11, with peripheral velocity (U) constant at U = 6 ni/s Production when mixing time (t) t = 0-240 seconds with speed U> Figure 12, U> It is a graph showing the state of dispersion when denoted by 28 in/s.
BULUSUN GERÇEKLESTIRILMESI IÇIN YAPILAR Sekil 4, bulus konusu bir sinterli cevher üretim yöntemini gerçeklestirmek için bir tesis hattinin bir örnegini açiklayan bir sematik görünüstür, Bulus konusu bir sinterli cevher üretim yöntemi Sekil 4°e göre açiklanacaktir. Ilk olarak, en fazla 125 unflik bir partikül büyüklügüne sahip olan %10-50 kütlelik ince toz demir cevherleri içeren bir sinterleme ham inaddesi (ll) hazirlanir. STRUCTURES FOR CARRYING OUT THE INVENTION Figure 4 shows a sintered ore production method of the invention. an example describing an example of a plant line to perform sematic is apparent, the subject of the invention is a sintered ore production method It will be explained according to Figure 4°. First, a maximum of 125 flour fine powder iron with a particle size of 10-50% by mass A sintering raw material (II) containing ores is prepared.
Sinterleme ham maddesinin (11), pelet beslemesi veya kuyruk cevheri gibi en fazla 125 um°lik bir partikül büyüklügüne sahip olan %10-50 kütlelik ince toz demir cevherleri içermesi ve kalan kisminin sinter beslemesi olarak toz demir cevheri ve yani sira artik cevher, silika, kireçtasi, sönmemis kireç, vb. gibi baska malzemeler olmasi tercih edilir. Bulusta, sinterleme ham maddesinde (11) en fazla 125 pm partikül büyüklügüne sahip ince toz demir cevherleri miktarinin %10- 50 kütleyle sinirlandirilma sebebi asagidaki gibidir. Sintering raw material (11), pellet feed or tail ore 10-50% with a particle size of up to 125 µm, such as bulk fine powdered iron ores and the remaining part is sintered. finely iron ore as feed, as well as residual ore, silica, limestone, quicklime, etc. It is preferable to have other materials such as is done. In the invention, a maximum of 125 pm in the sintering raw material (11) 10%- The reason for being limited to 50 masses is as follows.
Yani, bulus konusu ince toz demir cevherlerinin yukaridaki araligi ayarlanir, çünkü düzensiz partikül büyüklügüne ve zayif bir bag mukaveinetine sahip kaba partiküller üretilir. Miktar %10 kütleden az oldugunda, zayif bag mukavemetine sahip yari partiküller elde edilemez; %50 kütleyi astiginda ise zayif bag mukavemetine sahip kaba partiküller üretilmesi, fakat en fazla 125 um”]ik bir partikül büyüklügüne sahip ince toz demir cevherlerinin %50 kütlesinden fazlasinin büyük ölçüde harmanlanmamasi sorunu mevcuttur, bu yüzden üst limit %50 kütleye ayarlanir. Partikül büyüklügünün en fazla 125 um”yle sinirlandirilma sebebi, su ilave edilmis bir toz yüklü tabakadaki karsilikli partiküller arasinda bir yapiskanlik sergileyen bir yapisina gücünün, bir granülasyon özelliginde büyük ölçüde farkli bir davranis sergilemek üzere en fazla 125 pm”lik bir partikül büyüklügünde artmasidir ve dolayisiyla partikül büyüklügü limiti olarak '125 um ayarlanir. That is, the above range of fine powdered iron ores of the invention adjusted because it has irregular particle size and a weak bond. Coarse particles with high strength are produced. Quantity less than 10% mass semi-particles with weak bond strength are obtained. cannot; When it exceeds 50% mass, it has weak bond strength. producing coarse particles, but no more than 125 µm] than 50% by mass of fine powdered iron ores There is a problem of the excess not being blended to a large extent, this So the upper limit is set to 50% mass. The largest particle size more than 125 µm" because it is a powder loaded with added water. an adhesive that exhibits an adhesion between the corresponding particles in the layer. The strength of its structure differs greatly in a granulation property. a particle of up to 125 pm to behave increases in size and therefore the particle size limit '125 µm is set as
Daha sonra, hazirlanan sinterleme ham maddesinin (11) bir yüksek hizli karistirma cihaziyla (12) Ön islemi gerçeklestirilir. Yüksek hizli karistirma cihazi (12) kullanilmasinin bir amaci, kaba granüle partiküller olusmasini 'Önlemek ve dolayisiyla granülasyondan önce kaba granüle partiküllerin bir çekirdegi olarak ince toz küinelerini ezmektir. Ince toz kümelerini etkin sekilde ezmek amaciyla, mikroskobik açidan ince tozu dogrudan ayirmak için kümelere kesme kuvveti uygulamak etkilidir. Yüksek hizli karistirma cihazinin (12) bir örnegi olarak bir Eirich mikseri (Nippon Eirich sirketinin imali), bir Pellegaia mikseri (Kitagawa lron Works Co. Ltd. imali), bir Proshear mikseri (Pacific Machinery & Engineering Co., Ltd. imali), vs. kullanilabilir. Bunlar arasinda, Eirich mikseri bir “yüksek hizli karistirma-granülasyon” makinesi olarak bilinir ve partiküllerin sivi çapraz bagi olusumu yoluyla kümelenmesiyle ve büyümesiyle baglantili granülasyon fonksiyonuna sahiptir. Then, the prepared sintering raw material (11) is given a high Pre-processing is performed with the quick mixing device (12). high speed One purpose of using the mixing device (12) is to coarsely granulate to prevent the formation of particles and thus before granulation fine powder granules as a core of coarse granulated particles is to crush. In order to effectively crush fine dust clumps, cutting into clumps to directly separate microscopically fine powder applying force is effective. One of the high-speed mixers (12) For example, an Eirich mixer (manufactured by Nippon Eirich company), a Pellegaia mixer (manufactured by Kitagawa Iron Works Co. Ltd.), a Proshear mixer (manufactured by Pacific Machinery & Engineering Co., Ltd.), etc. can be used. Among them, the Eirich mixer is a “high-speed known as the “mixing-granulation” machine and aggregation and growth through the formation of cruciate ligaments It has associated granulation function.
Daha sonra, yüksek hizli karistirma cihaziyla (12) ön isleme tabi tutulan sinterleme ham maddesi (11) su ilavesi altinda bir tainburlu mikserle (13) bir araya getirilip karistirilarak granüle edilir. It is then pretreated with the high speed mixing device (12). retained sintering raw material (11) with a roller bearing under the addition of water It is brought together with a mixer (13) and mixed and granulated.
Granülasyondan sonra sinterleme ham maddesi (11), bir sinterleme makinesinde (14) bir sinterli cevher olusturmak üzere sinterleme niakinesine (14) beslenir. Sonra, bir pik demir üretmek için bir yüksek firin (15) ham maddesi olarak sinterli cevher kok, kireçtasi, Vb.°yle birlikte yüksek firina (15) beslenir. The sintering raw material (11) after granulation is a sintering sintering to form a sintered ore in the machine (14) feeds on niakine (14). Then, to produce a pig iron, a high with sintered ore coke, limestone, Etc. as raw material of kiln (15) together with the high furnace (15) is fed.
Bulusun bir özelligi olan granülasyon öncesi ön islemin bir etkisini arastirmak için, Sekil 5”te gösterildigi gibi, granülasyon `Öncesi 'Ön islem, 125 um°lik bir partikül büyüklügüne sahip %30 kütleli ince toz demir cevherleri içeren ayni sinterleiiie ham maddesine (1 l) göre, bir yüksek hizli karistirma mikseriyle (Eirich mikseri) ve bir tamburlu mikserle (13) gerçeklestirilir. Mikserlerin her birinde karistirma süresi 0-160 saniye araliginda degisir ve granüle sinterleme ham maddesinin (11) partikül büyüklügü dagilimiiii ölçmek ve ölçüle deger esasinda asagidaki esitliklerle tanimlanan ls ve 1p°yi belirlemek için 'ön islemden sonra 160 saniye süreyle tamburlu mikserle (13) bir granülasyon gerçeklestirilir. Sonra, sinterleme 'Öncesinde yüklü bir tabakanin harmonik ortalama çapi Dp (mm), partikül büyüklügü dagilimi fonksiyonu lsp ve nispi geçis hava akis hizi sirasiyla Sekil 6, Sekil 7 ve Sekil 8”de gösterilir. Her bir olayda, tamburlu mikserle (13) ön islem süresiniii 0 saniye oldugu bir durum geleneksel bir örnektir. An effect of pre-granulation pretreatment, which is a feature of the invention. To investigate the 'Before' granulation, as shown in Figure 5 The process is a 30% mass fine powder with a particle size of 125 µm. based on the same sintered raw material (1 l) containing iron ores, a with a high-speed mixing mixer (Eirich mixer) and a drum performed with a mixer (13). Mixing time in each of the mixers It changes in the range of 0-160 seconds and the granulated sintering raw material (11) measure the particle size distribution and 'prefix' to determine ls and 1p° defined by the following equations After the process, a drum mixer (13) is used for 160 seconds. granulation is performed. Next, sintering 'A pre-installed harmonic mean diameter of the layer Dp (mm), particle size dispersion function lsp and relative pass air flow rate respectively Figure 6, It is shown in Figure 7 and Figure 8. In each case, with the drum mixer (13) A case where the preprocessing time is 0 seconds is a conventional example.
Partikül büyüklügü dagilimi fonksiyonu lsp esasinda partikül büyüklügü dagiliinini netlestirme etkisi teinin etmek için yüksek hizli karistirma mikseri kullanimiyla harmonik ortalama çap artirilir. Ayni zamanda, nispi geçis hava akis hiziniii artirilmasi etkisi elde edilir. Particle size distribution function on the basis of lsp high-speed to achieve the effect of sharpening the size distribution The harmonic mean diameter is increased with the use of a mixing mixer. Same At the same time, the effect of increasing the relative pass airflow rate is achieved.
Burada, nISpi geçis hava akis hizi artirildigindan, sürekli bir negatif basinç altinda çalisan sinterleme makinesinde bir gaz miktari artirilabilir ve böylece üretkenlik daha yüksek olur. Here, since the relative pass airflow rate is increased, a continuous negative A quantity of gas in the sintering machine operating under pressure can be increased, thereby increasing productivity.
Dp = 1/Z(wi/di) ls = DpZZWi(l/di-l /Dp)2 lp = (l/Dp)ZZWi(di-Dp)2 Dp: harinonik ortalama çap (mm) Wi: bölge içinde agirlik artik orani (-) di: bölgenin temsili ortalama çapi (mm) lsp: partikül büyüklügü dagiliini fonksiyonu ls: ince partiküllerde partikül büyüklügü dagilimi fonksiyonu (-) lp: kaba partiküllerde partikül büyüklügü dagilimi fonksiyonu (-) Sekil 6, Sekil 7 ve Sekil 8”deki sonuçlardan görüldügü gibi, yüksek hizli karistirma mikseriyle granülasyon öncesi ön islemin gerçeklestirilmesine yönelik bulus Örnegi, sinterleine öncesinde yüklü tabaka için, ön islem yapilmayan geleneksel örnege kiyasla ve tamburlu mikserle (13) granülasyon öncesi ön islem yapilari karsilastirmali öriiege kiyasla yüksek bir harinonik ortalama çap (Sekil 6), düsük bir partikül büyüklügü dagilimi fonksiyonu (Sekil 7) Ve yüksek bir nispi geçis hava akis hizi (Sekil 8) temin edebilir ve iyi nitelikli sinterleine ham maddesi (11) elde edilebilir. kosullari> Bulus konusu sinterli cevher üretim yönteminde yüksek hizli karistirma cihazinin (12) tercih edilen isletim kosullarini arastirmak için, dikkatimiz, 125 mm partikül büyüklügüne sahip, %30 kütlelik ince toz demir cevherleri içeren ayni sinterleme ham maddesine (11) göre, yüksek hizli karistirma cihazinda (12) yüksek bir hizda döndürülen bir kanatçigin çevresel hizi U (in/s) ile karistirma süresi t (saniye) arasindaki iliskiye odaklaninistir. Çevresel hiz (U) U : 9 in/s kosulunda sabitken karistirma süresinin (t) t : 0-240 saniye araliginda degistirildigi bir ömege, karistirma süresi (t) t = 120 saniye kosulunda sabitken çevresel hizin (U) U = 0-18 m/s araliginda degistirildigi bir örnege ve çevresel hiz (U) U = 6 m/s kosulunda sabitken karistirma süresinin (t) t : 0-240 saniye araliginda degistirildigi bir örnege göre, granülasyoii sonrasinda bir sinterleme inakinesinde (14) sinterleineyle elde edilen bir sinterli cevherin üretim hizi ölçülür ve U> siniflandirilir. Dp = 1/Z(wi/di) ls = DpZZWi(l/di-l /Dp)2 lp = (l/Dp)ZZWi(di-Dp)2 Dp: harinonic mean diameter (mm) Wi: weight residue ratio within the zone (-) di: representative mean diameter of the region (mm) lsp: particle size distribution function ls: particle size distribution function in fine particles (-) lp: particle size distribution function in coarse particles (-) As can be seen from the results in Figure 6, Figure 7 and Figure 8, high pre-treatment before granulation with a fast mixing mixer Example of invention for realization, loaded prior to sinterleine for the layer, compared to the conventional sample without pretreatment and pre-treatment structures before granulation with a drum mixer (13) A high harinonic mean diameter compared to the comparative pattern (Fig. 6) a low particle size distribution function (Figure 7) and can provide a high relative pass airflow rate (Figure 8) and have good qualified sinterleine raw material (11) can be obtained. conditions> In the sintered ore production method, which is the subject of the invention, high speed to search for preferred operating conditions of the mixing device (12) For this, our attention is drawn to the 30% mass, with a particle size of 125 mm. in-kind sintering raw material containing fine powdered iron ores (11) according to the high speed mixing device (12) at a high speed. circumferential velocity of a rotated blade U (in/s) with mixing time t (seconds) focused on the relationship between. Peripheral velocity (U) U : 9 in/s condition of the mixing time (t) t : in the range of 0-240 seconds is modified, mixing time (t) t = 120 seconds is constant, the circumferential velocity (U) is changed in the range of U = 0-18 m/s. Mixing with sample and circumferential velocity (U) constant at U = 6 m/s According to an example where the duration (t) is changed between t : 0-240 seconds, sintering in a sintering machine (14) after granulation The production rate of a sintered ore obtained is measured and U> are classified.
Burada, yeterli yari partikülü granüle etmek için düzensiz partikül büyüklügüne ve zayif bag mukavemetine sahip kaba granüle partiküllerin (yari partiküller) üretilmesini önleyebilen bir kosulun odak noktasi, bir karistirma süresinin (t) bir çevresel hizla (U) çarpilmasi olan U> fiziksel deger oldugundan ve yüksek hizda döndürülen kanatçiktan türetilen bir hareket mesafesi olarak kabul edildiginden, farkli bir çevresel hiz ve farkli bir karistirma süresiyle siniflandirilabilir. Here, the irregular particle is used to granulate enough semi-particle. coarse granule with large size and weak bond strength a condition that can prevent the production of particles (quasiparticles) the focal point is at a peripheral velocity (U) of a mixing time (t). multiplied by U> physical value and high speed rotated blade a different distance, as it is considered a derived travel distance. environmental speed and can be classified by a different mixing time.
Yüksek hizli karistirma cihazi (12) yüklenen ham maddenin bir üst kisimdan bir alt kisma akisini saglayan bir yapiya sahip oldugundan, cihazda ham madde bulunma hizi sabit oldugunda, degisen yükleine hizinda karistirma süresi degisir. Bu nedenle, U> ayarlanarak stabil kaliteye sahip sinterli cevher üretilebilecegi görülebilir. Çevresel hiz (U) U = 9 m/s kosulunda sabitken karistirma süresi (t) t = 0-240 saniye araliginda degistirildiginde üretim hizi (t/saat/ml) ile U> arasindaki iliski Sekil 9”da ve asagidaki Tablo l°de gösterilmistir. The high-speed mixing device (12) Since it has a structure that provides the flow from one part to the lower part, when the raw material availability rate in the device is constant, the changing load speed, mixing time varies. Therefore, U> It is possible to produce sintered ore with stable quality by adjusting visible. Stirring time (t) t = with peripheral velocity (U) constant at U = 9 m/s U> with production rate (t/h/ml) when changed in the range of 0-240 seconds are shown in Figure 9 and Table 1 below.
Karistirina süresi (t) t : 120 saniye kosulunda sabitken çevresel hiz (U) U : 0-18 m/s araliginda degistirildiginde üretim hizi (t/saat/m2) ile gösterilmistir. Çevresel hiz (U) U = karistirma süresi (t) t = üretim hizi (t/saat/m2) ile U> arasindaki iliski Sekil asagidaki Tablo 3'te gösterilmistir. ”da ve asagidaki 0-240 saniye araliginda degistirildiginde U> (3) (m/s) (t/saat/mz) 0 O 9 1,1 135 15 9 1,09 270 30 9 1,1 1 405 45 9 1,13 540 60 9 1,15 810 90 9 1,23 U> (s) (ni/s) (t/saat/m ) O 120 0 1,1 Tablo 2”de 6 m/s kosulunda sabitken Karistirina süresi Çevresel hiz Uretim hizi U> 0 O 6 1,1 360 60 6 1,13 Sekil 9-ll'deki sonuçlardan (Tablo 1-3'teki veriler esasinda), Sekil 12”de saçinti semasi olarak gösterilen iki kosul (U < 8 m/s ve U 28 m/s) için U> l2”deki sonuçlardan görülebilecegi gibi, yüksek hizli karistirma cihaziyla (12) ön islem tercihen “U> karsilayacak sekilde yapilir ve daha tercihen yüksek hizli karistirma cihaziyla (12) ön islem “U> yapilir. Her durumda, U> aynidir, böylece yüksek hizli karistirma cihazinin (12) çesitli çevresel hizlari ve karistirma süreleri için tercih edilen bir örnek olarak U> araligi genellestirilebilir. Mixing time (t) t : Peripheral velocity at constant 120 seconds (U) U : With the production speed (t/h/m2) when changed between 0-18 m/s shown. Peripheral velocity (U) U = mixing time (t) t = U> with production rate (t/h/m2) between relationship figure shown in Table 3 below. at and below When changed in the range of 0-240 seconds U> (3) (m/s) (t/h/mz) 0 O 9 1.1 135 15 9 1.09 270 30 9 1.1 1 405 45 9 1.13 540 60 9 1.15 810 90 9 1.23 U> (s) (ni/s) (t/hr/m ) O 120 0 1.1 in Table 2 While stationary at 6 m/s Mixing time Environmental speed Production speed U> 0 O 6 1.1 360 60 6 1.13 From the results in Figures 9-11 (based on the data in Tables 1-3), Figure Two conditions (U < 8 m/s and U 28) shown as scatter diagram at 12” m/s) to U> As can be seen from the results in l2, high-speed mixing Pre-processing with the device (12) is preferably “U> made to match, and more preferably high-speed mixing. pre-treatment with the device (12) “U> makes. In any case, U> is the same, so that the high-speed mixing device (12) U> as a preferred example for their speed and mixing times range can be generalized.
Sekil 9”daki sonuçlardan görülebilecegi gibi, yüksek hizli karistirma ciahziyla (12) yapilan sinterleme ham maddesi (ll) ön isleminde yüksek hizli karistirma cihazinda (12) yüksek hizda döndürülen bir kanatçigin çevresel hizi (U) 9 m/s,ye ayarlandiginda, yüksek hizli karistirma cihazinin ( 12) karistirma süresi tercihen en az 30 saniyeye ayarlanir. Sekil 10°daki soiiuçlardan görülebilecegi gibi, yüksek hizli cihazinin (12) karistirma süresi 120 karistirma saniyeye ayarlandiginda, yüksek hizli karistirma cihazinda (12) yüksek hizda döndürülen bir kanatçigin çevresel hizi U (in/s) tercihen 6 SU 512”ye ayarlanir. Sekil ll”deki sonuçlardan görülebilecegi gibi, yüksek hizli karistirma cihaziyla (12) yapilan sinterleme ham maddesi (11) `Ön isleminde yüksek hizli karistirma cihazinda (12) yüksek hizda döndürülen bir kanatçigin çevresel hizi (U) 6 m/s”ye ayarlandiginda, yüksek hizli karistirma cihazinin (12) karistirma süresi tercihen en az 60 saniyeye ayarlanir. As can be seen from the results in Figure 9, high speed mixing In the pre-treatment of the sintering raw material (II) with the device (12) a high-speed mixer (12) When the peripheral velocity (U) of the fin is set to 9 m/s, the high velocity The mixing time of the mixing device (12) should preferably be at least 30 seconds. is set. As can be seen from the results in Figure 10°, the high speed mixing time of the device (12) 120 mix to second set, it will run at high speed in the high speed mixer (12). circumferential velocity of a rotated blade U (in/s) preferably 6 SU to 512” is set. As can be seen from the results in Figure ll, the high speed sintering raw material (11) made by mixing device (12) `Front in the high speed mixing device (12) when the circumferential velocity (U) of a rotated blade is set to 6 m/s, The mixing time of the high-speed mixing device (12) is preferably at least It is set to 60 seconds.
Bulus konusu sinterli cevher üretim yönteminde, yukaridaki örneklerdeki granülasyon cihazi olarak tek basina veya tamburlu mikserle (13) birlikte bir disk peletleyici kullanilabilir. In the sintered ore production method, which is the subject of the invention, the above stand-alone or with drum as granulation device in samples a disc pelletizer can be used with the mixer (13).
Granülasyon cihaziyla granülasyonda, islenen ham maddeye kireçtasinin uygulandigi ve bunlarin granüle partiküllerinin yüzeylerine kati esasli bir yakitin uygulandigi dis kaplamanin gerçeklestirilmesi tercih edilir. Dis kaplamanin tercih edilme sebebi, granüle partiküllerinin partikül büyüklügünü artirmak ve dolayisiyla üretkenligi artirmak için, kireçtasi uygulamasiyla yüzeyde yüksek mukavemete sahip kalsiyum ferrit olusturulmasi ve böylece yüzeydeki hidrofobikliginden dolayi granülasyon 'Özelligi üstünde zararli etki yaratan kati esasli yakit yapismasinin önlenmesidir. In the granulation with the granulation device, the processed raw material limestone applied and their granulated particles outer coating on which a solid fuel is applied to the surfaces implementation is preferred. The reason for the preference of dental coating, to increase the particle size of the granulated particles and therefore To increase productivity, high surface area with limestone application formation of high-strength calcium ferrite and thus Harmful effect on the granulation property due to its hydrophobicity It is the prevention of solid-based fuel sticking.
Sinterleme ham maddesi (11) olarak, kristal su içerigi en az %4 kütleye ayarlanan bir kristal su cevheri içeren en az bir malzeme kullanilmasi tercih edilir. Kristal su içeriginin en az %4 kütleye ayarlaninasinin tercih edilme sebebi, yüksek kristal su içerigine sahip cevherin spesifik yüzey alaninin yüksek olmasi ve ince toz deinir cevherinin granülasyon özelligini artirabilmesidir. Ayrica, en fazla 125 um”lik bir partikül büyüklügüne sahip ince toz demir cevherinin en az %5 kütlelik kireçtasi içermesi tercih edilir. En az %5 kütlelik kireçtasi içermesinin tercih edilme sebebi, ince kireçtasi ekleyerek ince toz demir cevheri ile kireçtasi arasindaki karisma özelliginin gelistirilebilmesi ve böylece bir sinterleme reaksiyonunuii tesvik edilmesidir. As sintering raw material (11), crystal water content of at least 4% at least one material containing a crystal water ore set to mass is preferred to be used. At least 4% mass of crystal water content It is preferred because it has a high crystalline water content. high specific surface area of the ore and fine dust changes It can increase the granulation property of the ore. In addition, at most Fine powdered iron ore with a particle size of 125 µm preferably, it contains at least 5% by mass of limestone. At least 5% by mass The reason why it is preferred to contain limestone is by adding fine limestone. mixing property between fine powdered iron ore and limestone. can be developed, thereby promoting a sintering reaction. is to be done.
Yüksek hizli karistirma cihazinda (12) islenecek sinterleme ham maddesinde (ll), uygulanan kireçtasina ilave olarak en fazla %3 kütlelik sönmüs kireç veya sönmemis kireç eklenmesi tercih edilir. En fazla %3 kütlelik sönmüs kireç veya sönmemis kireç ekleninesinin tercih edilme sebebi, sönmüs kireç veya sönmemis kireç ilavesinin, sinterleme ham maddesinin (11) bir yüklü tabakasinda hava geçirgenligini gelistirmek için granüle partiküllerin ezilme mukaveinetini artirabilmesidir. Yüksek hizli karistirma cihazinda (12) kullanilan sinterleme ham maddesinde (ll), ince toz demir cevheri orani en az %30 kütle oldugunda, sinterleme ham maddesinin (1 1) bir kurutma islemine tabi tutulmasi tercih edilir. En az %30 kütlede kurutma isleminin tercih edilmesinin sebebi, sinterleme isleminde suyu buharlastirmak için gizli isi gerekmesi ve önceden kurutma islemi yapilarak kok tozu, vb. gibi gerekli karbon malzeme miktarinin azaltilabilmesidir. The sintering raw material to be processed in the high-speed mixing device (12) In article (II), maximum 3% in addition to the applied limestone it is preferable to add slaked lime or quicklime by mass. Most the addition of more than 3% by mass of slaked lime or quicklime The reason why it is preferred is that the addition of slaked lime or quicklime, air in a loaded layer of the sintering raw material (11) crushing of granulated particles to improve permeability is to increase its strength. In high speed mixer (12) in the sintering raw material used (II), fine powdered iron ore a fraction of the sintering raw material (1 1) when the ratio is at least 30% by mass. Drying is preferred. At least 30% by mass The reason why the drying process is preferred is that in the sintering process, latent heat required to evaporate water and pre-drying coke dust, etc. by processing. the required amount of carbon material, such as is to be reduced.
ENDÜSTRIYEL UYGULANABILIRLIK Bulus konusu bir sinterli cevher üretim yönteminde, çesitli sinterleme makineleri kullanilarak yüksek üretkenlikle bir yüksek kaliteli sinterli cevher üretmek mümkündür. Bu nedenle, bir yüksek firin ham maddesi olarak bulusla elde edilen sinterli cevher kullanilarak yüksek firinin yüksek üretkenlikle isletimini gerçeklestirmek mümkündür.INDUSTRIAL APPLICABILITY In a sintered ore production method, which is the subject of the invention, various sintering processes are used. a high-quality sintered machine with high productivity using It is possible to produce ore. Therefore, a blast furnace raw By using the sintered ore obtained by the invention as the It is possible to operate the oven with high productivity.
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2015
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2016
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- 2016-07-05 TR TR2018/01470T patent/TR201801470T1/en unknown
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| KR102085054B1 (en) | 2020-03-05 |
| JP2017036480A (en) | 2017-02-16 |
| WO2017026203A1 (en) | 2017-02-16 |
| KR20180030596A (en) | 2018-03-23 |
| PH12018550011A1 (en) | 2018-07-09 |
| CN107849633A (en) | 2018-03-27 |
| TWI596213B (en) | 2017-08-21 |
| CN107849633B (en) | 2019-09-03 |
| JP6380762B2 (en) | 2018-08-29 |
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