WO2011118840A1 - 焼結パレット台車、それを備えた焼結機及び焼結鉱の製造方法 - Google Patents
焼結パレット台車、それを備えた焼結機及び焼結鉱の製造方法 Download PDFInfo
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- WO2011118840A1 WO2011118840A1 PCT/JP2011/057925 JP2011057925W WO2011118840A1 WO 2011118840 A1 WO2011118840 A1 WO 2011118840A1 JP 2011057925 W JP2011057925 W JP 2011057925W WO 2011118840 A1 WO2011118840 A1 WO 2011118840A1
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- sinter cake
- sintering
- carriage
- sinter
- sintered
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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
- C22B1/16—Sintering; Agglomerating
- C22B1/20—Sintering; Agglomerating in sintering machines with movable grates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B19/00—Combinations of furnaces of kinds not covered by a single preceding main group
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
- F27B21/06—Endless-strand sintering machines
Definitions
- the present invention relates to a sintering pallet carriage used for manufacturing a sintered ore as a raw material for a blast furnace, a sintering machine equipped with the same, and a method for manufacturing the sintered ore, and in particular, a condition of a raw material packed layer thickness greater than 600 mm.
- the present invention relates to a sintering pallet truck suitable for manufacturing sintered ore, a sintering machine equipped with the same, and a method of manufacturing sintered ore using these.
- floor bedding ore is obtained from the floor ore hopper 101, and the great bar 103 a on the bottom surface of the sintering pallet truck 103.
- the bedding layer 102 having a thickness of about 30 mm is formed on the top.
- the raw material containing iron such as powdered iron ore as a main raw material, a secondary raw material such as limestone, and a sintered raw material 104 made of fuel such as powdered coke are transported to a surge hopper 105 and stored, then cut out from a drum feeder and chute
- a raw material packed bed 107 is formed by charging on the bed deposit 102 of the sintering pallet truck 103 through 106.
- the sintered pallet carriage 103 is sequentially horizontally moved to the discharge portion while sucking air downward by applying a suction negative pressure, in the meantime, the powder coke in the raw material packed bed 107 is combusted, and the raw material is sequentially sintered from the upper layer to the lower layer with this combustion heat to produce a sintered ore.
- a sintered complete layer 107a (hereinafter referred to as “sinter cake”) in which the sintering is completed is formed in the upper layer.
- the raw material packed layer immediately below this sinter cake is formed with a softened and melted layer in progress of combustion and sintering, and there is an unsintered raw material packed layer in the lower layer.
- the layer is compressed under the load of the sinter cake to increase the bulk density. For this reason, the ventilation in the raw material packed layer including the softened and melted layer below the sinter cake is lowered, and the ventilation is nonuniform.
- sinter cake support effect In this stand support sintering method, sintering progresses from the upper layer of the raw material packed layer and the thickness of the sinter cake increases, and when the sinter cake reaches the height position of the top of the sinter cake support stand, It is supported by the top of the sinter cake support stand, the sinter cake load applied to the layer below it is reduced, ventilation is improved, and productivity is remarkably improved (hereinafter, this effect is referred to as “sinter cake support effect”).
- the sinter cake support effect is an effect obtained after the sinter cake is supported on the top of the sinter cake support stand. It is desirable to use a sinter cake support stand having a height as high as possible in order for the sintering to proceed with a sinter cake support effect as soon as possible from the start of sintering. However, since the sinter cake is locally supported at the top of the sinter cake support stand, the height of the sinter cake support stand is too high, and as a result, the thickness of the supported sinter cake (hereinafter referred to as “support sinter cake thickness” If it is too thin, as shown schematically in FIG.
- the height of the sinter cake support stand may be selected so that the “support sinter cake thickness” is larger than the lower limit thickness at which cracks occur. In other words, the height of the sinter cake support stand may be set lower than the upper limit of the sinter cake support stand height corresponding to the lower limit of the “support sinter cake thickness” at which cracking occurs.
- the upper limit of the height of the sinter cake support stand is the ratio of the height of the sinter cake support stand to the layer thickness of the raw material packed layer (hereinafter referred to as “the ratio of the height to the layer thickness” as appropriate).
- the lower limit of the “support sinter cake thickness” is 150 mm
- the lower limit of the “support sinter cake thickness” is 200 mm (sinter cake support).
- the upper limit of the height of the stand is 600 mm).
- the load of the sinter cake applied to the sinter cake support stand increases as the raw material packed layer becomes thicker, and as a reaction, the force applied from the sinter cake support stand to the sinter cake also increases.
- the force applied to the sinter cake increases, cracks are likely to occur in the sinter cake.
- the layer thickness exceeds 720 mm, cracks are likely to occur in the sinter cake as the load of the sinter cake increases. Therefore, it seems that it is easier to understand the idea that as the raw material packed layer becomes thicker, a thicker “supporting sinter cake thickness” is required.
- the principle of the downward suction type sintering is to ignite the carbon material in the surface layer portion of the raw material packed bed in an ignition furnace, and sequentially burn the carbon material by downward suction to perform heat transfer downward.
- the upper layer portion of the raw material packed layer still has a small effect of preheating due to the combustion of fuel, and the thickness of the softened and melted layer having a high air flow resistance is small, so the air resistance of the entire raw material packed layer is also small. Therefore, the temperature of the upper layer portion of the raw material packed layer is low and the combustion of the carbonaceous material proceeds excessively quickly, resulting in insufficient combustion and melting reaction (sintering reaction), and the sintered sintered cake has low strength.
- the strength of the sinter cake greatly depends on its ventilation resistance or permeability, and the upper sinter cake of the raw material packed layer is lower in strength than the lower sinter cake.
- a sinter having a stand height higher than 75% in the “height ratio to the layer thickness” while avoiding cracks on the surface of the sinter cake may be possible to use a cake support stand.
- Patent Document 4 a proposal is made to improve the deterioration in air permeability due to compression of the sinter cake and the reduction in productivity due to the reduction in the coke burning speed associated therewith. It is not possible to obtain sufficient results simply by focusing on. Furthermore, in Patent Document 5, it is proposed to regularly disperse the sinter cake support member in order to increase the coke sintering rate, and in Patent Document 6, it is proposed to extend the life of the sinter cake support member.
- the structure of the sinter cake support stand optimized for improving the product quality and productivity by making the best use of the sinter cake support effect and the arrangement method thereof are not specifically shown.
- the present invention has been made in view of the above circumstances, avoiding cracks on the surface of the sinter cake formed immediately above the support stand, and making maximum use of the sinter cake support effect to improve product quality and productivity. It is an object of the present invention to provide a sintered pallet carriage having a sinter cake support stand that can achieve the above, a sintering machine equipped with the same, and a method for producing a sintered ore using these.
- the present inventor has found that a sintered body formed immediately above a support stand when producing sintered ore under conditions of a raw material packed layer having a layer thickness higher than 600 mm, particularly 720 mm.
- An upper limit rule for the height of a sinter cake support stand for avoiding cracks on the cake surface was found, and the present invention was completed.
- the width of the top surface of the sinter cake support stand (W S ) is 30 [mm] ⁇ W S ⁇ 60 [mm]
- the number of the sinter cake support stands is a sinter adjacent in the width direction of the pallet truck.
- a sintered pallet carriage characterized in that the distance between the cake support stands and the distance between adjacent sinter cake support stands and the side walls of the sintered pallet carriage are selected not to exceed 1250 mm.
- a sintering machine comprising the sintering pallet carriage described in (1).
- the top A sinter cake support stand having a surface width (W S ) of 30 [mm] ⁇ W S ⁇ 60 [mm], a distance between adjacent sinter cake support stands in the width direction of the pallet carriage, and an adjacent sinter cake support stand;
- a plurality of pallet trucks are provided in the width direction of the pallet truck so that the distance between the side walls of the sinter pallet truck does not exceed 1250 mm, and the sintered cake is produced under the condition of the raw material packed layer thickness larger than 600 mm while supporting the sinter cake.
- a sintered pallet carriage used for producing sintered ore under conditions of a raw material packed layer thickness thicker than 600 mm and a sintering machine equipped with the same, the sintering machine On the pallet truck, the sinter cake is supported so that the side surface is substantially parallel to the traveling direction of the pallet truck and the height (H) is H h ⁇ 120 [mm] (h is the thickness of the raw material packed layer)
- H h ⁇ 120 [mm]
- H the thickness of the raw material packed layer
- the width (W S ) of the top surface of the sinter cake support stand is 30 [mm] ⁇ W S ⁇ 60 [mm], and the number of sinter cake support stands
- the distance between the sinter cake support stands adjacent to each other in the width direction of the pallet truck and the distance between the adjacent sinter cake support stands and the side wall of the sintered pallet truck are selected so as not to exceed 1250 mm.
- the product quality and productivity can be improved by making the best use of the support effect of the sinter cake while avoiding cracks on the surface of the sinter cake formed immediately above the support stand and the uplift that is the preceding stage phenomenon.
- the product quality and productivity can be improved by the support effect of the sinter cake while avoiding cracks on the surface of the sinter cake.
- FIG. 2 is a plan view of a sintered pallet carriage with a sinter cake support stand standing up, for explaining the relative position and size relationship between the top surface of the sinter cake support stand of the present invention and the upper surface of the sintered pallet carriage.
- FIG. 4 is a schematic perspective view of a sintered pallet truck equipped with a sinter cake support stand, and shows the distance between adjacent sinter cake support stands and the distance between adjacent sinter cake support stands and the side wall of the sintered pallet truck. It is a figure for demonstrating.
- FIG. 1 is a cross-sectional view schematically showing the vicinity of a sintered cake support stand of a raw material packed layer in a sintering process on a sintering pallet carriage.
- the raw material packed layer 1 on the top 3 of the pallet truck is composed of a sintered complete layer (sinter cake) 1a in which the sintering is completed in the upper layer, a softened molten layer 1b in the course of combustion, and an unfired layer therebelow.
- the sinter cake 1 a is supported by a sinter cake support stand 4.
- the upper limit of the height (H) of the sinter cake support stand 4 is 120 mm lower than the thickness (h) of the raw material packed layer 1, the raw material packed layer is sintered under a high layer thickness condition exceeding 600 mm.
- a “support sinter cake thickness” that does not generate cracks is formed immediately above the support stand.
- the height of the sinter cake support stand within a range that can secure at least 120 mm of the “support sinter cake thickness” formed immediately above the support stand, cracks on the surface of the sinter cake formed immediately above the support stand can be avoided. Meanwhile, the product quality and productivity of the sintered ore can be improved by the sintering cake supporting effect.
- the “support sinter cake thickness” becomes thinner than 120 mm, and the surface of the sinter cake formed immediately above the support stand is cracked. Will occur.
- the lower limit is not particularly limited, but when the height (H) of the sinter cake support stand 4 is less than 450 mm, the improvement in the sintering progress rate (FFS) is not great, so that it is preferably 450 mm or more.
- FIG. 2 is a plan view of the sintered pallet truck 3 on which the sinter cake support stand 4 is erected, and the relative position and size of the top surface 4a of the sinter cake support stand 4 and the bottom surface of the sintered pallet truck 3 It is a schematic diagram for demonstrating the relationship. In the figure, the direction from the upstream end 3A to the downstream end 3B of the sintered pallet truck is the traveling direction of the sintered pallet truck.
- the width (W S ) of the top surface of the sinter cake support stand 4 described below is the dimension (mm) of the top surface parallel to the width direction of the pallet truck, and the length of the top surface.
- the length (L S ) means a dimension (mm) parallel to the traveling direction of the pallet truck.
- the width (W S ) of the top surface of the sinter cake support stand 4 is preferably 30 [mm] ⁇ W S ⁇ 60 [mm]. If the width of the top surface (W S ) is narrower than 30 mm, the surface support effect is not sufficient for the upper layer sinter cake, and it becomes close to line support, and the sinter cake is likely to crack in the direction of travel. In addition, if the width of the top surface (W S ) is larger than 60 mm, the amount of heat removed by the top surface increases, and the product quality and productivity of the sintered ore deteriorate.
- FIG. 3 is a schematic perspective view of a sintered pallet truck provided with the sinter cake support stand of the present invention.
- the distance d 1 between the sinter cake support stands adjacent to each other in the width direction of the pallet truck and the distance d 2 between the adjacent sinter cake support stands and the side wall of the sintered pallet truck are both smaller than 1250 mm. This is because when either d 1 or d 2 is 1250 mm or more, the load applied to the sinter cake support stand per unit becomes excessive, and the surface of the sinter cake formed immediately above the support stand is likely to crack.
- the distance d 1 between the adjacent sinter cake support stands and the distance d 2 between the adjacent sinter cake support stand and the side wall of the sintered pallet truck are 1250 mm.
- the number of sinter cake support stands should be determined so as not to exceed.
- a sintered pallet carriage 13 having a length L 0 of 1500 mm and a width W 0 of 5500 mm was used. Further, as shown in FIG. 4, on the sintered pallet carriage 13, a large number of great bars (13a) arranged in parallel to the traveling direction of the pallet truck are arranged in three rows (13A, 13B) in a direction orthogonal to the pallet traveling direction. 13C) Side by side, four trapezoidal sinter cake support stands 14a, 14b were installed in the rear two rows (13B, 13C) of the great bar (13a) group in the width direction of the pallet truck. .
- the distance d 1 between the sinter cake support stands adjacent to each other in the width direction of the pallet truck is 1010 mm between the first and second stands and between the third and fourth stands in the width direction of the pallet truck.
- the distance between the third stands was 1000 mm.
- the distance d 2 between the sinter cake supporting stand and the side wall of the sintering pallets truck was a 1240mm respectively.
- ⁇ Reference> 1010 ⁇ 2 + 1000 + 1240 ⁇ 2 5500mm (pallet width)
- Each sinter cake support stand has a substantially trapezoidal plate shape in the horizontal direction in the direction of travel of the pallet truck, and the thickness direction of the cross section in the thickness direction is thin from the bottom to the top in order to improve the excavation property.
- the side surface of the pallet carriage is substantially parallel to the traveling direction of the pallet carriage.
- the length and width of the bottom part (trapezoid lower base) of each sinter cake support stand are 500 mm and 100 mm, respectively, and the length and width of the top part (trapezoid upper base) are 200 mm, respectively. 47 mm.
- Table 1 shows the presence or absence of cracks on the surface of the sintered cake formed immediately above the support stand and the TI (tumbler strength) of the sintered ore for the sintered ore manufactured using the sintered pallet truck according to various examples of the present invention. ) Indicates strength and product yield.
- Table 2 shows a comparative example. In the table, “hH” corresponds to “support sinter cake thickness” formed immediately above the support stand. The presence or absence of cracks was judged visually.
- the thickness (H) of the sinter cake support stand is (layer thickness (h) -120 of the raw material packed layer) [mm under the condition that the raw material packed layer has a layer thickness (h) of 600 mm to 970 mm. Since the “supporting sinter cake thickness” formed directly above the support stand was 120 mm or more, no cracks were generated on the surface of the upper sinter cake. As a result, the TI strength and product yield of the sintered ores of Examples 1 to 9 were good.
- the “support sinter cake thickness” formed immediately above the support stand increased, and the load due to this sinter cake also increased.
- the height (H) of the sinter cake support stand is higher than (layer thickness (h) -120) [mm] of the raw material packed layer, and is formed immediately above the support stand. Since the "supported sinter cake thickness" is 110 mm, which is lower than 120 mm, the layer thickness (h) of the sintered raw material packed layer is 610 mm (Comparative Example 1), 710 mm (Comparative Example 2), 810 mm (Comparative Example 3), 910 mm (Comparative) In all cases of Example 4), cracks occurred.
- Raw material packed bed 1a Sinter cake 3 Sintered pallet truck 3A Upstream end 3B Downstream end 4 Sinter cake support stand 4a Top surface L 0 Length of sintered pallet truck W 0 Width of sintered pallet truck H Height of sinter cake support stand distance L 0 between the the L S sinter cake supporting length W S sinter cake width d 1 adjacent sinter cake supporting stand distance d 2 adjacent sinter cake supporting stand and the side wall of the sintering pallets truck support stand stand Length of traveling direction of sintering pallet truck h Thickness of raw material packed layer
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Abstract
Description
しかしながら、シンターケーキはシンターケーキ支持スタンド頂部において局所的に支持されるので、シンターケーキ支持スタンドの高さが高過ぎてその結果、支持されるシンターケーキの厚さ(以下、適宜「支持シンターケーキ厚」という)が薄過ぎると、図7に模式的に示すように、焼結工程でシンターケーキ支持スタンドの上方のシンターケーキの表面に亀裂110が発生してしまうという問題がある(尚、図1の模式図から明らかなように、(原料充填層の層厚(h)−シンターケーキ支持スタンドの高さ(H))が「支持シンターケーキ厚」となる)。シンターケーキ表面に亀裂が発生してしまうと、亀裂部位に優先的にガス流れが起こるので、下層の焼成が不均一となるいわゆるむら焼けを助長してしまい、生産率が低下する。
「支持シンターケーキ厚」が薄過ぎると亀裂が生ずることは明らかである。また、シンターケーキ表面の亀裂発生について、「支持シンターケーキ厚」に下限があること、言い換えると、シンターケーキ支持スタンド高さに上限があることには疑問の余地がないと思われる。従って、亀裂を回避するために、「支持シンターケーキ厚」を、亀裂が生じる下限の厚みよりも厚くなるようにシンターケーキ支持スタンドの高さを選択すればよい。言い換えると、シンターケーキ支持スタンドの高さを、亀裂が生じる「支持シンターケーキ厚」の下限に対応するシンターケーキ支持スタンド高さの上限よりも低く設定すればよいと思われる。
このような状況の中、特許文献3において、シンターケーキ支持スタンド高さの上限を、原料充填層の層厚に対するシンターケーキ支持スタンドの高さの比(以下、適宜「層厚に対する高さ比」という)によって決めるという考え方が示された。具体的に、従来用いられてきた典型的な層厚である600mmの原料充填層に対して、450mm以上の高さのシンターケーキ支持スタンドを用いて、シンターケーキ表面に亀裂が生じたという結果に基づいて、シンターケーキ支持スタンド高さの上限として「層厚に対する高さ比」75%が示された。
この考え方に基づけば、亀裂発生回避のために、原料充填層が高層厚になるほど、「支持シンターケーキ厚」を厚くする必要がある。上記の通り、原料充填層が600mmのときは「支持シンターケーキ厚」の下限は150mmであり、仮に800mmの原料充填層を用いるときは、「支持シンターケーキ厚」の下限は200mm(シンターケーキ支持スタンドの高さの上限は600mm)となる。
以上の通り、シンターケーキの強度はその通気抵抗もしくは通気性に大きく依存し、原料充填層の上層のシンターケーキは下層のシンターケーキより強度が低いことが知られている。
すなわち、通気性の観点から、原料充填層が高層厚になるほど、原料充填層の上層の「支持シンターケーキ厚」部分のシンターケーキの強度は高くなると考えられる。このような原料充填層の上層の「支持シンターケーキ厚」部分のシンターケーキの強度が原料充填層の層厚に依存するというこの考えに基づけば、特許文献3で示された「層厚に対する高さ比」75%のシンターケーキ支持スタンド高さの上限は、層厚条件が「600mm層厚の場合」のシンターケーキの強度における上限に過ぎなかったと考えられる。
従って、600mmより高層厚の原料充填層の条件で焼結鉱を製造する場合は、シンターケーキ表面の亀裂を回避しつつ、「層厚に対する高さ比」で75%より高いスタンド高さのシンターケーキ支持スタンドを用いることができる可能性がある。
近年の焼結鉱の製造時における高生産・高層厚化の流れから、高層厚の原料充填層に対してより合致する新たな上限ルールを見出すことは非常に重要である。
(1)600mmより厚い原料充填層厚の条件で焼結鉱を製造するために用いられる焼結パレット台車であって、該焼結パレット台車上に、側面がパレット台車の進行方向に略平行なるように立設されかつ高さ(H)がH=h−120[mm](hは原料充填層の層厚)以下のシンターケーキ支持スタンドをパレット台車の幅方向に複数備え、
前記シンターケーキ支持スタンドは、その頂部面の幅(WS)が30[mm]≦WS≦60[mm]であり、前記シンターケーキ支持スタンドの個数は、パレット台車の幅方向に隣接するシンターケーキ支持スタンド間距離及び隣接するシンターケーキ支持スタンドと焼結パレット台車の側壁との間の距離が1250mmを越えないように選択されている、ことを特徴とする焼結パレット台車。
(2)(1)に記載の焼結パレット台車を備えたことを特徴とする焼結機。
(3)焼結パレット台車上に、その進行方向に平行に立設されかつ高さ(H)がH=h−120[mm](hは原料充填層の層厚)以下であり、かつ頂部面の幅(WS)が30[mm]≦WS≦60[mm]であるシンターケーキ支持スタンドを、パレット台車の幅方向に隣接するシンターケーキ支持スタンド間距離及び隣接するシンターケーキ支持スタンドと焼結パレット台車の側壁との間の距離が1250mmを越えないようにパレット台車の幅方向に複数備えてシンターケーキを支持しながら、600mmより厚い原料充填層厚の条件で焼結鉱を製造する焼結鉱の製造方法。
焼結過程において、パレット台車上3の原料充填層1は、上層に焼結が完了した焼結完了層(シンターケーキ)1a、その下に燃焼進行中の軟化溶融層1b、その下に未焼結の原料充填層1c及び床敷層2からなる状態となっており、シンターケーキ1aはシンターケーキ支持スタンド4によって支持されている。
シンターケーキ支持スタンド4の高さ(H)の上限を、原料充填層1の厚さ(h)よりも120mm低い値とすることにより、原料充填層が600mmを越える高層厚条件下での焼結鉱の製造方法において、亀裂が発生しない「支持シンターケーキ厚」が支持スタンド直上に形成される。
つまり、支持スタンド直上に形成される「支持シンターケーキ厚」を少なくとも120mm確保できる範囲でシンターケーキ支持スタンドの高さを設定することで、支持スタンド直上に形成されるシンターケーキ表面の亀裂を回避しつつ、シンターケーキ支持効果によって焼結鉱の成品品質及び生産性を向上させることができる。
図中、焼結パレット台車の上流端3Aから下流端3Bに向かう向きが焼結パレット台車の進行方向である。
シンターケーキ支持スタンド4の頂部面の幅(WS)は30[mm]≦WS≦60[mm]であるのが好ましい。
上記頂部面の幅(WS)が30mmより狭いと上層シンターケーキに対して面支持効果が十分でなく、線支持に近い状態となって、シンターケーキに進行方向に平行に亀裂が入りやすいからであり、また、上記頂部面の幅(WS)が60mmより広いと頂部面による抜熱量が大きくなり、焼結鉱の成品品質及び生産性が低下するからである。
パレット台車の幅方向に隣接するシンターケーキ支持スタンド間距離d1及び隣接するシンターケーキ支持スタンドと焼結パレット台車の側壁との間の距離d2はいずれも、1250mmより小さい。
d1又はd2のいずれかが1250mm以上になると、1台あたりのシンターケーキ支持スタンドに掛かる荷重が過大となり、支持スタンド直上に形成されるシンターケーキ表面に亀裂が入りやすくなるからである。
焼結パレット台車の幅を従来ものより幅広にするときは、上記隣接するシンターケーキ支持スタンド間距離d1及び隣接するシンターケーキ支持スタンドと焼結パレット台車の側壁との間の距離d2が1250mmを越えないように、シンターケーキ支持スタンドの個数を決めればよい。
また、図4に示すように、焼結パレット台車13上には、パレット台車の進行方向に平行に配置する多数のグレートバー(13a)群がパレット進行方向と直交方向に3列(13A、13B、13C)並置し、側面視して略台形のシンターケーキ支持スタンド14a、14bを前記グレートバー(13a)群の後方2列(13B、13C)に、パレット台車の幅方向に4本づつ設置した。パレット台車の幅方向に隣接するシンターケーキ支持スタンド間距離d1は、パレット台車の幅方向において第1−第2スタンド間、および、第3−第4スタンド間のそれぞれの距離を1010mmとし、第2−第3スタンド間の距離を1000mmとした。また、シンターケーキ支持スタンドと焼結パレット台車の側壁との間の距離d2は、それぞれ1240mmとした。
<参考> 1010×2+1000+1240×2=5500mm(パレット幅)
各シンターケーキ支持スタンドは、パレット台車の進行方向に水平な断面が概略台形板状を有し、かつ厚み方向の断面は、排鉱性を良好にする点から、板厚が下から上に薄くなるテーパー形状を有しており、その側面がパレット台車の進行方向に略平行なるように立設されている。また、シンターケーキ支持スタンドは、各シンターケーキ支持スタンドの底部(台形の下底)の長さ及び幅はそれぞれ500mm、100mmであり、頂部(台形の上底)の長さ及び幅はそれぞれ、200mm、47mmのものを用いた。
1a シンターケーキ
3 焼結パレット台車
3A 上流端
3B 下流端
4 シンターケーキ支持スタンド
4a 頂部面
L0 焼結パレット台車の長さ
W0 焼結パレット台車の幅
H シンターケーキ支持スタンドの高さ
LS シンターケーキ支持スタンドの長さ
WS シンターケーキ支持スタンドの幅
d1 隣接するシンターケーキ支持スタンド間距離
d2 隣接するシンターケーキ支持スタンドと焼結パレット台車の側壁との間の距離
L0 焼結パレット台車の進行方向の長さ
h 原料充填層の層厚
Claims (3)
- 600mmより厚い原料充填層厚の条件で焼結鉱を製造するために用いられる焼結パレット台車であって、該焼結パレット台車上に、側面がパレット台車の進行方向に略平行なるように立設されかつ高さ(H)がH=h−120[mm](hは原料充填層の層厚)以下のシンターケーキ支持スタンドをパレット台車の幅方向に複数備え、
前記シンターケーキ支持スタンドは、その頂部面の幅(WS)が30[mm]≦WS≦60[mm]であり、前記シンターケーキ支持スタンドの個数は、パレット台車の幅方向に隣接するシンターケーキ支持スタンド間距離及び隣接するシンターケーキ支持スタンドと焼結パレット台車の側壁との間の距離が1250mmを越えないように選択されている、ことを特徴とする焼結パレット台車。 - 請求項1に記載の焼結パレット台車を備えたことを特徴とする焼結機。
- 焼結パレット台車上に、その進行方向に平行に立設されかつ高さ(H)がH=h−120[mm](hは原料充填層の層厚)以下であり、かつ頂部面の幅(WS)が30[mm]≦WS≦60[mm]であるシンターケーキ支持スタンドを、パレット台車の幅方向に隣接するシンターケーキ支持スタンド間距離及び隣接するシンターケーキ支持スタンドと焼結パレット台車の側壁との間の距離が1250mmを越えないようにパレット台車の幅方向に複数備えてシンターケーキを支持しながら、600mmより厚い原料充填層厚の条件で焼結鉱を製造する焼結鉱の製造方法。
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Citations (6)
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JPH04168234A (ja) * | 1990-10-30 | 1992-06-16 | Nippon Steel Corp | 焼結用パレット |
JPH059605A (ja) * | 1991-07-01 | 1993-01-19 | Nippon Steel Corp | 焼結層の通気性調整装置 |
JPH06271952A (ja) * | 1993-03-16 | 1994-09-27 | Nippon Steel Corp | 焼結鉱の製造方法 |
JPH094981A (ja) * | 1994-11-22 | 1997-01-10 | Nippon Steel Corp | シンターケーキ支持スタンド及び焼結パレット |
JPH0914857A (ja) * | 1995-06-29 | 1997-01-17 | Nippon Steel Corp | 焼結鉱の製造方法 |
JPH10122754A (ja) * | 1996-10-16 | 1998-05-15 | Nippon Steel Corp | シンターケーキ支持スタンドを有する焼結機 |
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JPH06323745A (ja) * | 1993-05-17 | 1994-11-25 | Nippon Steel Corp | 焼結用パレット |
JP3162972B2 (ja) * | 1995-10-02 | 2001-05-08 | キヤノン株式会社 | 記録装置及びその記録装置を用いたファクシミリ装置 |
JPH09209050A (ja) * | 1996-02-05 | 1997-08-12 | Nippon Steel Corp | 高層厚による焼結鉱の製造方法 |
RU2183682C2 (ru) * | 1997-07-24 | 2002-06-20 | Сименс Акциенгезелльшафт | Способ эксплуатации агломерационной установки |
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH04168234A (ja) * | 1990-10-30 | 1992-06-16 | Nippon Steel Corp | 焼結用パレット |
JPH059605A (ja) * | 1991-07-01 | 1993-01-19 | Nippon Steel Corp | 焼結層の通気性調整装置 |
JPH06271952A (ja) * | 1993-03-16 | 1994-09-27 | Nippon Steel Corp | 焼結鉱の製造方法 |
JPH094981A (ja) * | 1994-11-22 | 1997-01-10 | Nippon Steel Corp | シンターケーキ支持スタンド及び焼結パレット |
JPH0914857A (ja) * | 1995-06-29 | 1997-01-17 | Nippon Steel Corp | 焼結鉱の製造方法 |
JPH10122754A (ja) * | 1996-10-16 | 1998-05-15 | Nippon Steel Corp | シンターケーキ支持スタンドを有する焼結機 |
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KR20120085340A (ko) | 2012-07-31 |
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