WO2006038539A1 - 焼結鉱の製造方法 - Google Patents
焼結鉱の製造方法 Download PDFInfo
- Publication number
- WO2006038539A1 WO2006038539A1 PCT/JP2005/018072 JP2005018072W WO2006038539A1 WO 2006038539 A1 WO2006038539 A1 WO 2006038539A1 JP 2005018072 W JP2005018072 W JP 2005018072W WO 2006038539 A1 WO2006038539 A1 WO 2006038539A1
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- WO
- WIPO (PCT)
- Prior art keywords
- ore
- meteorite
- stone
- pore volume
- average pore
- 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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Classifications
-
- 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
- C22B1/20—Sintering; Agglomerating in sintering machines with movable grates
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/006—Starting from ores containing non ferrous metallic oxides
-
- 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
Definitions
- the present invention relates to a method for producing ⁇ used as a high price.
- the charge for the blast furnace; tffiK is determined as follows. First, the dark stone, lime ⁇ C a O-containing adjuncts, blended S i 0 2 containing auxiliary raw material ⁇ Pi Kotasu dust carbonaceous material such as silica Ya, Ru mixed and added an appropriate amount of water thereto .
- This blended raw material (am raw material) is added to a predetermined thickness on a Dwytroid pallet, and after igniting the charcoal material of the male bed 3 ⁇ 4i part, the air is drawn downward and the inside of the bed The charcoal material is burned and the blended raw material is made into a male cake by the fine male. By crushing and sizing the cake, a product with a thickness of several millimeters or more can be obtained.
- ⁇ In order to perform stable blast furnace keys, high-quality ⁇ is required.
- the quality of ⁇ is the power that is indexed by the shutter bow (cold daughter), the return 3 ⁇ 43 ⁇ 4 ⁇ index (RD I), the originality (RI), etc.
- the quality has a great influence on 'stable life in the state of unloading in the furnace in the blast furnace key, in-furnace in-furnace' ⁇ 1 liquid 'property, efficiency of ore, high temperature I ⁇ raw'.
- Strict quality control is carried out in the ⁇ ! ⁇ process, and in order to reduce the difficulty of shochu, it is required to improve the product yield of! TOS. Improvement is required.
- a typical example of limonite ore is pisolite ore. This pisolite ore has an internal gill that is made of gooseite (F e 2 0 3 'H 2 0) with a gap between fish-like hematite (F e 2 O 3 ) Crystal water is 8% fine It is a rock with a content rate.
- Roburiper ore, Yandiku, ⁇ "IS" etc. are skeletal «stones.
- the P content is less than 0.1 0IIHSS% (usually less than 0.06 IIHSS%) as in the various types of meteorites described above, and generally contains P in an amount of 0.1 0IIBSS% or more.
- Such stones are called high-precious stones.
- Such a high P content and dredging of meteorite as raw material for blast furnace increases the load of hot metal i and increases the load of, so conventionally it was hardly ffl .
- TO * of high-quality IS stones has been decreasing as shown in ⁇ 3 ⁇ 4E, this high-grade stone is also being studied for its ability to combine 41 materials as a raw material.
- High crystal water ore was used as ⁇ 3 ⁇ 4 ⁇ ⁇ ⁇ , (1)
- maramamba ore has a large amount of ⁇ and inferior in properties, so that the product is reduced due to aeration in the fiber bed (raw material layer). Problems such as a decrease in product yield have been pointed out.
- Patent Document 1 Conventionally, when dripping a large amount of Mara Mamba ore, 3 ⁇ 4is is the key to the strength of mixing dredging with the aim of increasing tr (Patent «1: JP 7-3 3 1 3 4 2).
- Patent Document 1 since the provision of Patent Document 1 requires a special step, there is a problem that the equipment cost and the cost increase.
- blending of maramanba ore as in Patent Document 1 even if the male raw material is strengthened, the fertility and product yield are not necessarily improved, and in particular, maramanba. It was found that the cold key (shutter bow) force s very low;
- Takashin stone there is not much conversion as a ⁇ ⁇ ⁇ ⁇ ⁇ in the past, so the examination of the effects on the quality, fertility, and product yield of the age when a considerable amount was mixed in the male raw material Little has been done. Therefore, when the present inventors investigated and examined the effect of the composition of high-precious stones on the quality of ⁇ is, when the distribution of high-precious stones * increased;
- the object of the present invention is to produce high-quality regardless of the raw agate stone blended in the raw material. It is possible to produce a high quality product with a high level of bells and a product yield.
- Patent Document 1 the method of strengthening the male raw material as shown in Patent Document 1 is the same as that of Mara Mamba ore;
- the lack of a positive effect on yield improvement suggests that the essential problem is not in the raw material inertia but in another point. Therefore, the present inventors made various “ ⁇ ” in order to clarify the point, and at the same time, studied various effects of the high-grade stone composition on the quality of the product; As a result, we found the following facts.
- the effect of the blending of high-grade stones in the raw materials, the quality of the product, etc. cannot be reduced only by the pore volume of the ore.
- the average pore volume of the high-grade meteorite is approximately halfway between the hematite ore and maramamba ore. Based on such average pore volume, the high-grade meteorite is formulated according to the key as described in (3) above. But I can't get a cold girl.
- Raw stone «Meteorite A with an average pore volume measured by water measurement method of 0.03 to 0.05 cm 3 / g (excluding pellet feed) as at least ⁇ 15 of raw stone, also average pore The amount is 0. 10-0. 12.
- Average pore volume X 0.0 x [A%] +0.11 x [B%] + (X 08 x [C%] + 2.0x0.06x [D%]-(1)
- the ratio of the hard stone D is 20-60nHss%.
- the ratio of the meteorite D is preferably 20-50nass%.
- the mean pore volume of the meteorites of the present invention is about 4 to 7 mm of ore, and the water IE input measurement method (pressing pressure: 0. 007-412M P a)
- the average value of Grada porosity (N : LO average fD).
- the upper pressure range is the pore diameter of 0.0 3 5 to 200 ⁇ m. This is a pressure that can measure the amount of pores. By measuring in such a pressure range, the present invention is used in the present invention; It is possible to accurately measure the amount of observatory pores of the crushed stone D.
- Fig. 1 is a graph showing the relationship between the blending ratio of maramampa ore in the raw stone and the product; knee ratio and yield of tffls.
- FIG. 2 is a schematic diagram showing the mixing ratio of the raw ore in FIG.
- Figure 3 shows the transition between the coke ratio and the cold bow of the ⁇ in the raw material ⁇ ! Mixed with ore and the difficult example mixed with marampa ore + ordinary ore. It is.
- Figure 4 shows the original stones and cakes in the record. This figure shows the layout used to make and destroy the melt.
- FIG. 5 is an example of an X-ray CT image of the detached cake obtained by the arrangement of Fig. 4 ⁇ "r. Fig. 6 is a picture of Makoto's stones and cakes.
- FIG. 3 is a diagram illustrating a view taken to perform the process.
- Figure 7 is a schematic diagram showing the meteorites being detached and; taken to perform the slashing of the cake melt dragon.
- Fig. 8 is a graph showing the transition of the branch width of the i ⁇ stone and; ⁇ cake during firing.
- Fig. 9 is a duraf that shows the growth width of the branch width obtained from Fig. 8 and the night-time index.
- Fig. 10 shows the behavior of the melt that melts around the "Malamanba Ore and Hematite Ore" It is explanatory drawing which showed as an example.
- Fig. 11 shows an example of the texture of hematite ore, maramamba ore and limonite ore measured by the flooding method.
- Fig. 12 is a graph of the mass ratio and chemical destruction of each key of high-grade meteorites and blended ores.
- Fig. 13 shows the raw ores of No. 1 to No. 3 in Table 4 blended into the raw materials and baked! ⁇
- FIG. 14 is a graph showing the quality, yield, and yield of No. 1 to No. 3 raw ores shown in Table 4;
- FIG. 15 is a graph showing the change in air permeability of No. 1 and No. 3 refractory stones in Table 4;
- Fig. 16 is a graph that accepts the formation of exhaust gas when the raw materials of No. 1 and No. 3 in Table 4 are combined together.
- FIG. 17 is a t diagram illustrating the ball pulling method used for measuring the viscosity of the melt.
- Figure 18 is a Ru graph der showing the viscosity of a C aO-Fe 2 0 3 KeiTorueki was added v3 ⁇ 4 the A 1 2 0 3 reagent.
- FIG. 19 is an explanatory diagram showing an apparatus for measuring an immersion example of a melt in a packed bed.
- FIG. 20 is a graph showing the relationship between the viscosity of the melt and the?
- FIG. 21 is a graph showing the average porosity X of meteorites mixed with the raw material and the cold product (shutter bow ⁇ ) of the product! ⁇ .
- Figure 1 shows the results of examining the dredging rate and product yield of the raw ore by changing the blending ratio of maramamba ore in the raw ore.
- the blending ratio of maramamba ore and stone hematite ore as shown in Fig. 2 is as follows: (a) Hematite ore: 1 0 OnHss%, (b) Hematite ore: approx. 80 mss%, Maramamba ore: approx. 2 OnHss%, (c) Hematite ore: approx. 6 Omss%, Maramamba ore: approx.
- the knee rate and yield strength of the s have decreased. As a result of investigating this reason, when the blending ratio of Mara Mamba ore increases, the cold key strength of s decreases, and as a result, the product yield and the knee rate can be reduced.
- Figure 3 shows the composition of the ore in the original ore in the difficulty of! ⁇ S.
- thigh hematite ore approx. 10 IIHSS%
- other ores abrox. 90 HHSS%
- Maramanpa ore approx. 1 Omass%
- its female stone progressive stone mainly composed of hematite ore
- approx. 90 nBss% is the result of examining changes in the ratio between the daughters (tumbler boats).
- the blending ratio of the ore (pellet feed) in the raw stone is about 10mass%; t male raw material, the blending ratio of the maramamba ore in the old meteorite is about 1 O ss% I switched to the A male raw material and investigated the effect, ilffi ing the 3 ⁇ nature of the raw material ( ⁇ so-called HPS method); ⁇ ⁇ Doo ⁇ ⁇ , difficult
- the X-ray CT image is binarized into a solid and a pore, and this is further subdivided into 1 ⁇ 2®, and a branch is created from this detailed image.
- obtains the total ®3 ⁇ 4A P of (pores) (mm 2) and a total length Lb t (mm), was determined branch width by the branch width ApZLb t.
- This branch width corresponds to the thickness of the cavity inside the male cake.
- melt leakage index (S1 + S2) / (t2 -The melt index was obtained by ti). This melting index is a record of the amount of movement of the melt between the rough particles (movement g per unit time).
- Figure 8 shows the gradual results of the texture of the raw stone and straw cake.
- N o .2 Hematite Ore: 40 mass% Maramamba Ore: 60 mass%)
- N o .3 Hematite Ore: 40 Nas%, Limonite Ore: 6 OIIHSS%)
- No 1 Hematite Ore: 10 Onass%
- the growth of the planch width 3 ⁇ 4 and; ⁇ the branch width of the cake is considerably smaller. That is, these No. 2 and No. 3
- the pores formed in the process are mainly formed by the movement of the melt between the minerals (that is, the portion after the melt moves concealed).
- the formation of the width: is big and powerful! ⁇
- the large branch width of the cake (the pores are thick) means that the amount of movement of the soot between the ore particles is large.
- FIG. 9 shows the 3 ⁇ 4 ⁇ of the melt index and the branch width growth 3 ⁇ based on the result of FIG. 8 , which is shown in a straightforward manner.
- the melt is a bond that connects between the stone particles, if a considerable amount of the night is absorbed in the Tsuruta pores, the amount of bond bonding between the ore particles is insufficient, resulting in a cold Wrinkles will drop.
- the majority of the melt formed around the ore particles is contained in the fine pores because there are few Grada pores inside the ore particles. Since it stays between the ore particles without being absorbed, the amount of movement of the melt between the ore particles increases, resulting in thick pores.
- Figure 11 shows hematite ore, maramamba ore and limonite ore measured by water IIE input measurement method (using water ⁇ thole distribution measurement, ⁇ pressure: measured at 0.0 7 to 4 1 2 ⁇ a). This shows an example of the pore size distribution of (ores of 4 to 7 mm particle size).
- the same porous fabric was prepared using various building stones, and the calorific weight average pore volume based on the porous fabric was calculated. Excluding) is classified into the following three categories according to the number of microporosity related to the behavior of cocoons.
- the major ores contained in meteorite A include hematite ore, magnetite ore, and other forces S, and » ⁇ 8
- S stone contained in stone 8 includes maramamba ore, etc.
- Limonite ores represented by pisolite ore are examples of stones included in the same.
- the pellet feed an MIS stone, is used as part of the raw scalpel for the sickle, and this pellet feed is a force S and pellet feed belonging to the hematite or magnetite ore on the mineral ffi ⁇ .
- the Gorita pores have a great influence on the behavior of the melt. I found that it was not possible.
- the pellet feed is from the meteorite A! ⁇ .
- the above is a cattle suitable for the age at which meteorites A, B, and C are mixed, but as described below, it is important for formulating high stones.
- Table 2 shows the typical chemical castle and LOI (reduction rate of carotian mass highly correlated with crystal water content) for high-hardness stone, limonite ore, hematite ore, and maramamba ore. 13 ⁇ 4 composition (male distribution, arithmetic flat fiber is shown in Table 3. According to this, high oresite has a prominently higher P content than other ores. In general, other ores have a P content of 0.06. Mass%: 3 ⁇ 4 lower than 0 ⁇ 1 OiiBss% i3 ⁇ 4 P. Also, high ⁇ £ stone has a relatively high content of A 1 2 0 3 and higher than 2. OIIHS S % , LOI is lower than limonite ore, but is about twice that of hematite ore, and ⁇ o.
- the ratio of impacts of 5 mm or less is 33 ss%, which is as high as that of Mara Mamba ore, and the arithmetic mean diameter is 1,86 mm, and it is W
- Figure 12 shows the high ore and blended ores A: 5 Onass%, 1 Omass%
- Figure 13 shows the raw materials 3 ⁇ 4 ⁇ density, diameter, and medium] «3 ⁇ 4price time using a size of 300 ⁇ 40 OmmH).
- ⁇ f cattle suction pressure: 1000mmH 2 O
- coke ratio 5.3%
- mixed I ⁇ in CaO ratio 9%
- mixed raw material S i 0 2 ratio 5%
- raw material Key 1 1 Omm.
- the quality, rate, and yield of the resulting product are shown in Figure 14 ⁇ ". 4
- every 10ness% of the high-grade meteorite and limonite ore is reduced by 0 ⁇ 0 1 t / hr 'm 2 .
- the cold dredging with the increase in the distribution of high meteorite decreases, and as a result, the product yield and the decrease in the B rate can be reduced.
- the retentivity is reduced, although the coverability does not change much.
- Figure 15 shows the ⁇ raw material (No. 1 in Table 4) formulated with 100mss% limonite ore and high The change in air permeability in the fibers was investigated on 10 ⁇ on the raw material (No. 3 in Table 4) containing limonite ore 40mss%. According to this, No. 1 limonite ore 10% of Oma SS % blended with high-grade meteorites, N o .3; ⁇ In raw materials; ⁇ Time force S is longer and air permeability is reduced I understand the power S.
- the air permeability (attention to the change in gas orchid, Ohara Doo blended with the high meteorite is apologetic even in the half part where ventilation in the wet zone is mainly supported.
- the 'breathing male in the leak zone is dominant! ⁇
- the air permeability in the latter half is markedly deteriorated.
- FIG. 16 shows the result of investigating the exhaust gas thread! ⁇
- N o .1 with a mixture of high calcite and N o. C 0 2 is falling. This is thought to be due to the inhibition of Kotas's craving due to the addition of high-precious stones.
- Inakaku et al. Reported that if the acupuncture was apologized, the rate at which coatus was wrapped in the melt and burned increased, and as a result, the expansion of coatus was inhibited (iron and steel vol. .78 (1992), 1053).
- the reason for the high air permeability (0 1 5) is that the high temperature of the melt has decreased due to the high phosphorus ore content. .
- the inventors of the present invention have found that the composition of the high-precious stones mentioned above, that is, the cocoon on the surface, that is, the proportion of the rise is high and the content of A 1 2 0 3 in the cocoon is very high. that focuses on ⁇ , fusion » ⁇ of that a 1 2 0 3 in ⁇ that is also is and melting parts group points include many of the formulated with high flame stone melt leakage of firewood spoon Presuming that this is the cause
- the viscosity of the melt is calculated based on the moving boat in a certain section.
- Fig. 18 shows the results. It can be seen that the viscosity of the melt increases as the amount of A 1 2 O 3 added increases regardless of the melt.
- the melts are immersed in 3 ⁇ 43 ⁇ 4®.
- ⁇ is A 1 2 . 3
- the viscosity of the melt generated by the large amount of inconvenienced content is large, so the potency of midnight is reduced (that is, the amount of movement of the melt between the ore particles decreases) and the pores in the cake It is thought that the growth of water is hindered, and this leads to the production of air permeability and the production of coke, which leads to a decrease in coldness, chain rate and yield of the product.
- [D%]: [Stone DK / [Condition of meteorites A, B, C, D] Fig. 2 is the ⁇ result of the difficulty of ⁇ 3 ⁇ 4 ⁇ .
- the average pore volume X is preferably 0.0 4—0.0 8 cm 3 / g.
- two or more kinds of meteorites selected from the above-mentioned meteorites A to C and calcite D are blended as at least the raw fs ⁇ stone; From the raw material, when adding the rubble, mix the raw material so that the average pore volume X of the meteorite defined by the above formula (1) is 0.09 cm 3 / g or less. This is made from the raw material. It is especially useful for blending a considerable amount of «Stone 13 which is the same as the present invention; For example, ( ⁇ ) «Stone A,
- the combination ratio of stone 8 is 2 Omasso / o or more in 3 ⁇ 41 "in B, crushed stone C and meteorite D (provided that b in calcite A to C is not mixed ⁇ 3 ⁇ 4raii)
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-290622 | 2004-10-01 | ||
| JP2004290622A JP4661154B2 (ja) | 2004-10-01 | 2004-10-01 | 焼結鉱の製造方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006038539A1 true WO2006038539A1 (ja) | 2006-04-13 |
Family
ID=36142615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/018072 Ceased WO2006038539A1 (ja) | 2004-10-01 | 2005-09-22 | 焼結鉱の製造方法 |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP4661154B2 (ja) |
| KR (1) | KR100792133B1 (ja) |
| CN (1) | CN1914338A (ja) |
| TW (1) | TWI299363B (ja) |
| WO (1) | WO2006038539A1 (ja) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI558657B (zh) * | 2011-09-08 | 2016-11-21 | 淡水河谷公司 | 奈米碳管應用於粉礦聚集物以增加其機械強度 |
| EP2829619B1 (en) * | 2012-03-22 | 2017-03-01 | JFE Steel Corporation | Method for adjusting precursor powder for sintering, and precursor powder for sintering |
| WO2013140810A1 (ja) * | 2012-03-22 | 2013-09-26 | Jfeスチール株式会社 | 焼結鉱用原料粉の調整方法および焼結鉱用原料粉 |
| CN109182735A (zh) * | 2018-11-17 | 2019-01-11 | 武钢集团昆明钢铁股份有限公司 | 高结晶水褐铁矿烧结方法 |
| WO2025197264A1 (ja) * | 2024-03-19 | 2025-09-25 | Jfeスチール株式会社 | 焼結鉱の製造方法 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06116658A (ja) * | 1992-10-06 | 1994-04-26 | Nippon Steel Corp | 焼結鉱用含ゲーサイト鉄鉱石の高品位化法 |
| JP2001303142A (ja) * | 2000-04-26 | 2001-10-31 | Nippon Steel Corp | 高温性状の優れた焼結鉱の製造方法 |
| JP2003096521A (ja) * | 2001-09-21 | 2003-04-03 | Nkk Corp | 高アルミナ鉄鉱石配合の焼結鉱及びその製造方法 |
| JP2003129139A (ja) * | 2001-10-26 | 2003-05-08 | Nippon Steel Corp | 焼結原料の事前処理方法 |
| JP2004137575A (ja) * | 2002-10-18 | 2004-05-13 | Kobe Steel Ltd | 焼結鉱の製造方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4472735B2 (ja) * | 2007-07-30 | 2010-06-02 | 日本電気株式会社 | 測位ゲートウェイ装置、端末位置情報要求処理方法およびプログラム |
-
2004
- 2004-10-01 JP JP2004290622A patent/JP4661154B2/ja not_active Expired - Lifetime
-
2005
- 2005-09-22 CN CNA2005800038440A patent/CN1914338A/zh active Pending
- 2005-09-22 WO PCT/JP2005/018072 patent/WO2006038539A1/ja not_active Ceased
- 2005-09-22 KR KR1020067015672A patent/KR100792133B1/ko not_active Expired - Lifetime
- 2005-09-30 TW TW94134179A patent/TWI299363B/zh not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06116658A (ja) * | 1992-10-06 | 1994-04-26 | Nippon Steel Corp | 焼結鉱用含ゲーサイト鉄鉱石の高品位化法 |
| JP2001303142A (ja) * | 2000-04-26 | 2001-10-31 | Nippon Steel Corp | 高温性状の優れた焼結鉱の製造方法 |
| JP2003096521A (ja) * | 2001-09-21 | 2003-04-03 | Nkk Corp | 高アルミナ鉄鉱石配合の焼結鉱及びその製造方法 |
| JP2003129139A (ja) * | 2001-10-26 | 2003-05-08 | Nippon Steel Corp | 焼結原料の事前処理方法 |
| JP2004137575A (ja) * | 2002-10-18 | 2004-05-13 | Kobe Steel Ltd | 焼結鉱の製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20060120235A (ko) | 2006-11-24 |
| TWI299363B (en) | 2008-08-01 |
| CN1914338A (zh) | 2007-02-14 |
| KR100792133B1 (ko) | 2008-01-04 |
| TW200617182A (en) | 2006-06-01 |
| JP4661154B2 (ja) | 2011-03-30 |
| JP2006104508A (ja) | 2006-04-20 |
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