CN102027143B

CN102027143B - Method and apparatus for charging raw material to be sintered

Info

Publication number: CN102027143B
Application number: CN200980116790.7A
Authority: CN
Inventors: 关口毅
Original assignee: JP Steel Plantech Co
Current assignee: JP Steel Plantech Co
Priority date: 2008-08-13
Filing date: 2009-08-10
Publication date: 2013-03-13
Anticipated expiration: 2029-08-10
Also published as: EP2311997A4; KR20100122956A; CN102027143A; EP2311997A1; JP2010043328A; WO2010018804A1; KR101295564B1

Abstract

Provided is a technique for keeping the spacing of wires forming a chute equivalent in charging a raw material to be sintered into a sintering machine, thereby to keep a classifying performance. A method for charging a raw material to be sintered feeds a raw material to a wire chute (5) equipped with a plurality of wires (3), thereby to classify and charge the raw material into a pallet (9) therebelow. The raw material is fed to the wire chute (5) while brackets (17, 19, 21) for supporting the wires (3) are being moved in the axial directions of the wires (3).

Description

Raw materials for sintering charging method and device

Technical field

The present invention relates to raw materials for sintering charging method and the device of iron and steel ironmaking.

Background technology

In the operation of the sinter machine of iron and steel production etc., drop into groove by the raw material supplying machine by raw material the raw materials for sintering below about 10mm is packed in the sintering dolly of non junction mobile sintering machine.In such raw materials for sintering, also comprise the slag making materialses such as the solid fuels such as coke powder and lime powder, raw material is packed into after the end, in ignition furnace, light the coke powder that stock chart layer section comprises, and utilize gas blower to attract air from the below of sintering dolly, make the coke powder burning in the raw material layer on one side, from upper strata to lower floor burn till iron ore on one side.Therefore, when packing raw materials for sintering into, for the raw material layer that is deposited in the sintering dolly, keep well ventilation property and guarantee that in the little face cutting of sintering uniform ventilation property is important.

About the size-grade distribution of the sintered ore of sintering dolly inside, make the coarse grain raw material that the particulate raw material is layeredly piled up as the mode of suitable size-grade distribution take the bottom at raw material layer.So, by improving the ventilation property of the raw materials for sintering layer integral body in the sintering dolly, can develop the quality that realize to improve sintered ore, and improve yield rate and productive technology.The raw materials for sintering segregation charging apparatus of packing into as being used for controlling the size-grade distribution of the raw materials for sintering in the sintering dolly in the above described manner can use the raw material of screen cloth pattern plate type to drop into groove.

The structure that the raw material of screen cloth pattern plate type drops into groove is: many one metal wires or bar (hereinafter referred to as " wire class ") are parallel to each other at the width of sintering dolly, and separate predetermined distance on the face that tilts downwards and arrange, these wire classes are supported by guide member (carriage).So, the bar interval that forms the raw material input groove of screen cloth pattern plate shape is set narrowly in upper side, more sets widelyr to lower side.Here, raw material input groove is tilting below tiltedly on the direction relative with the direct of travel of sintering dolly.Therefore, drop into the coarse grain raw material in wide screen cloth small hole of the lower side of groove piles up in the raw material underclad portion of sintering dolly inside by raw material, on the other hand, the particulate raw material in narrow screen cloth small hole that drops into the upper side of groove by raw material is piled up in the raw material top section of sintering dolly inside.So, can control well the ventilation property of raw materials for sintering in the sintering dolly.

But the width of sintering dolly also has 3～5.5m, and the support span of wire class also reaches 4～7m.Therefore, if there is not the guide member (carriage) of support wire class, it is not enough and vibrate then to produce bending or rigidity in the wire class, thereby the wire class departs from the former position that should dispose, and classification performance is worsened.

Therefore, the guide member of support wire class (carriage) is according to the diameter of the width of sintering dolly and wire class, be set to suitable quantity with the bending that do not produce the wire class and the degree of position skew.

In having the sintering raw material feeding device of said structure, it is important keeping equably the interval (screen cloth small hole) of wire class and keeping classification performance, but as the major cause that hinders this, has following 2 points.

Major cause is because the existence of guide member (carriage), and another major cause is because raw material powder is attached on the wire class.Below, to the problem that caused by these major causes with how to solve its present situation, below, at length describe.

＜with the problem that exists for cause of guide member (carriage) 〉

Owing to there is guide member (carriage), the raw material of packing into is created in the feedstream of the both sides separation of guide member (carriage), the accumulating amount of the raw material corresponding with the position that is provided with guide member (carriage) lacks than other parts that do not have guide member (carriage), thereby forms groove shape section in the skin section of piling up raw material.This groove shape section is in forming process, and the raw material around it to be flowing into to a certain degree, but because distance of fall is short, therefore is difficult to sufficient inflow, and becomes the little accumulation horizon of material density.In addition, raw material in theory, is to pile up the larger raw material of particle diameter ratio when flowing on every side.

In the groove shape section that so forms, to compare with the par that does not form groove shape section, the ventilation resistance of raw material layer inside diminishes.That is, inner at the raw materials for sintering layer, in the ventilation resistance of sintering vehicle-width direction, produce uneven.If it is large that the inequality of this ventilation resistance becomes, then air attracts to concentrate on the relatively little groove shape section of ventilation resistance, becomes the period of zone of combustion in raw material layer in this zone, and the combustionvelocity of coke powder becomes large in its groove shape section, produce thus unburn section in the par, burn till slowly.So, cause the rising of yield rate reduction, quality decline and the coke original unit of sintered ore, cause that further the productivity of sintered ore descends.

This is the problem that the existence by guide member (carriage) causes.

As the technology that is used for addressing this is that, following technology is proposed: drop into the body of gathering up that has a plurality of V-shapes between groove and the division board by the raw material that is arranged on screen cloth pattern plate type, it is certain making the raw materials for sintering bed thickness in the sintering dolly, and reduces the inequality (with reference to patent documentation 1) of its material density.

In addition, as another example, following technology is proposed: drop into the downstream side of groove at the raw material of being located at screen cloth pattern plate type, spiral raw material in sintering vehicle-width direction is gathered up in the device, by lifting device and its revolution change device that this screw-blade is set, in sintering dolly cross direction integral body the raw material layer surface element is not applied pushing, but gather up raw material around the groove shape section and this groove dress section of landfill, and raw material is piled up in this position and only applies pushing in this position, thereby obtain having roughly the uniformly raw materials for sintering layer (with reference to patent documentation 2) of ventilation property in sintering vehicle-width direction.

＜adhere to problem as cause take raw material powder 〉

The problem that so-called raw material powder adheres to is that the raw material powders such as coal powder, coke powder are attached on the wire class problem of keeping difficult at the interval of wire class.If the interval of wire class can't maintain the interval of regulation, then can't suitably carry out the classification of charging feedstock, the problem that causes with the above-mentioned existence by guide member (carriage) is identical, can't form suitable stockpile lamination, cause the reduction of sintered ore yield rate, the decline of quality and the rising of coke original unit, cause that further the productivity of sintered ore descends.

As the technology that solves the problem that this raw material powder adheres to, proposed to arrange the technology (with reference to patent documentation 3) of the scraper plate that moves with the bar butt that forms groove and in the well width direction.

In addition, as another example, proposed to make the tinsel that forms groove with the axially movable technology (with reference to patent documentation 4) of low speed at tinsel.

The prior art document

Patent documentation

Patent documentation 1: Japanese kokai publication hei 9-280741 communique

Patent documentation 2: Japanese kokai publication hei 11-211355 communique

Patent documentation 3: Japanese kokai publication sho 63-180079 communique

Patent documentation 4: Japanese kokai publication sho 61-60843 communique

As mentioned above, in sintering raw material feeding device, have following problem: hinder keep equably the interval of wire class and keep classification performance two major causes, be that existence and the raw material powder of guide member (carriage) adheres to the problem that causes respectively, respectively the problem of existence has been taked solution.

But, in the solution that proposes at present, leave over problem shown below.

＜about the problem of the existence of guide member (carriage) 〉

Form the problem of groove shape section about the existence owing to guide member (carriage), the solution that proposes in patent documentation 1,2 is to allow in the skin section of piling up raw material to be formed with groove shape section, utilizes the groove shape section of gathering up the smooth formation of device of V font attitude or spiral type and the technology of landfill.

But in the technology of smooth established groove shape section and landfill, the size-grade distribution of the groove shape section of being buried is not identical with its part in addition, even look that groove shape section has disappeared, but the uneven problem of ventilation resistance does not fully solve in fact.Idea according to the inventor, because the powder accumulation of coarse size is around the central authorities of groove shape section reach, therefore if utilize and gather up device and eliminate this groove, then since groove shape section by the powder landfill of coarse size, to such an extent as to there is not fully to solve the relative little problem of ventilation resistance of groove shape section.

＜the problem that adheres to about raw material powder 〉

Be attached to problem on the wire class about raw material powder, the scheme that proposes in patent documentation 3 considers to make the scraper plate that is inserted into each bar that consists of groove to move, and the raw material powder that is attached on the bar is relevant with scraping, and plays therewith accordingly effect.

But the technology of patent documentation 3 record thinks, as the wire class that consists of groove, be the bar with particle size of rigidity to a certain degree be prerequisite.Trace it to its cause, be because: if bar is the member of fine wire and so on, just need to be at the guide member (carriage) of the width support wire of groove, if guide member (carriage) is arranged, scraper plate just conflicts with guide member (carriage) and can't move, therefore in the technology of patent documentation 3, consider not have guide member (carriage) in the well width direction as prerequisite.

So, in the technology of patent documentation 3, existence can't be applicable to the problem of the groove that formed by the wire class with guide member (carriage) on the width of groove.And, if consist of the member that the wire class of groove is bar and so on of particle size, then naturally and understandably exist classification performance also restricted, the problem that can't bring into play originally excellent classification performance.

In addition, about the technology that wire is moved with low speed at its axis direction of patent documentation 4 records, be used for the mechanism's complexity with low speed moving metal silk, can not say preferred from the viewpoint that space or expense are set.

As mentioned above, do not have effectively that to solve respectively to hinder two major causes that keep equably the interval of wire class and keep classification performance be that existence and the raw material powder of guide member (carriage) adheres to as the technology of the problem of cause, and do not exist solution these two and so on technology.

Summary of the invention

The present invention finishes in order to solve Related Topics, during the raw materials for sintering that its purpose is to be provided at sinter machine is packed into, can keep equably the interval of wire class and keeps the technology of classification performance.

In order to solve the above problems a little, following research has been carried out in invention.Figure 10 is the figure that the expression of pattern ground is formed at the groove shape section of sintering bed.Impact on firing level in the situation that produces this groove shape section is studied.

As described in the background technology item, prior art is by the smooth formed groove shape of spiral or scraper plate section, Figure 11 be expression smooth the figure of state of this groove shape section.In Figure 11, A section is the part that does not have the impact of carriage, the part of the groove shape section that B section is smooth is produced by the impact of carriage.If observe the size-grade distribution of this A section and B section, roughly as shown in figure 12, compare with the A section that does not have carriage impact, in the smooth B section of groove shape section, be the state of coarse size.In addition, because B section is also low with A section phase specific density, so ventilation property is high.

Figure 13 is the figure that pattern ground represents the state that the firing level in certain cross section of sintering bed is advanced from the top downwards.

As shown in figure 13, because accelerate in the B section combustionvelocity of smooth groove shape section, therefore, along with firing level is advanced downwards, its impact becomes large, becomes large with the poor of the A section that not affected by carriage.And, near the bed bottom, produce the poor of Δ F in A section and B section.So, the length of the depth direction of the part of the impact of the groove shape section that namely produced of the degree of depth of the B section of near the poor Δ F of the firing level bed bottom and smooth groove shape section, the height H of sintering bed is proportional at this moment.

As mentioned above, combustionvelocity is poor with impregnable part generation in the part of groove shape section impact, and the length of the depth direction of its influence degree and affected part is proportional.

Therefore, the inventor is in order to relax the impact of carriage, and it is mobile to consider to make carriage to come and go along the wire that consists of groove.

Figure 14 is that expression makes on one side carriage move the figure of time process of firing level in certain cross section of the sintering bed of piling up raw material along wire with the speed of stipulating.In Figure 14, the region representation that surrounds with oblique line is subject to the B section of the impact that caused by carriage.

In state shown in Figure 14, during the B section of firing level by the impact that is subject to being caused by carriage, combustionvelocity accelerates, and compares with impregnable part, and firing level is advanced downwards.Therefore, when firing level moves, determined near the position of the firing level that the bed bottom is by the form by B section downwards.In example shown in Figure 14, be divided into the zone of a ', b ', three kinds of forms of c '.A ' is the zone of the form by B section not, and b ' is by B section but increases gradually or the zone of the form that reduces gradually from h to 0 from 0 to h in the zone by distance, c ' be distance by B section for certain, it is apart from being the zone of the form of h.

In the zone of a ', firing level is advanced with the speed of regulation.In addition, in the zone of b ', in the part of the distance by B section and short part, produce difference in the speed of firing level, advance rapidly at the partial combustion face of distance, advancing lentamente in the part that distance is short.Therefore, in the zone of b ', firing level tilts.

In addition, in c ' zone, only accelerate with the speed of the proportional regulation of distance h of passing through B section.

From Figure 14, can judge, therefore proportional with difference and the h in a ' zone of the impact that is not subjected to carriage because be maximum length by B section in c ' zone, be Δ f as shown in figure 14.

At this, if relatively Figure 13 and Figure 14 are proportional and produce the poor Δ F of firing level with sintering bed height H in Figure 13, in Figure 14, with the proportional poor Δ f that produces firing level of distance h that passes through B section.As can be known, h is little more a lot of than H from Figure 13, Figure 14, and therefore, Δ f is little more a lot of than Δ F.

From above judgement, move by making carriage, can effectively reduce carriage to the impact of firing level.

Then, the inventor further studies, and the translational speed of carriage and the quantitative relation of firing level are studied.

Figure 15 is translational speed and the range of influence of carriage and near the figure of the firing level position sintering bed bottom surface of pattern ground expression carriage.

The state that Figure 15 (a) expression carriage stops, Figure 15 b represents that the carriage translational speed is the state of low speed, and Figure 15 (c) expression carriage translational speed is the state of middling speed, and Figure 15 (d) expression carriage translational speed is state at a high speed.

In the situation that the carriage of Figure 15 (a) stops, firing level is U word shape near the bottom surface.In the situation of the low speed of Figure 15 (b), be upside-down triangle shape, and it is consistent with the bottom of Figure 15 (a) to become the position on summit of del of lower position of firing level.In the situation of the middling speed of Figure 15 (c), be inverted trapezoidal, and the position of the upper base of inverted trapezoidal is compared more with the bottom of Figure 15 (a) and is moved upward.In the situation of the high speed of Figure 15 (d), the position of the below of firing level more is moved upward and is roughly identical position than the bottom of Figure 15 (a).

Judge that from Figure 15 along with the translational speed of carriage accelerates, the impact on firing level that is caused by carriage diminishes.

Therefore, which kind of degree is the translational speed with carriage be made as, in other words, which kind of degree the inclination of the section that affects of carriage shown in Figure 15 is made as produces effect and be studied for relaxing impact on firing level.

Figure 16 is expression from the cross-section of sintering dolly direct of travel from drum grooves 7 to sintering dolly 9 base feeds and load the figure of the state of raw material.In Figure 16, θ _pThe loading angle of expression raw material, v _pThe translational speed of expression sintering dolly 9.

In addition, Figure 17 is explanation loading speed and loading angle θ _pBetween relation (Figure 17 (a)) and loading speed and the carriage tilt angle theta that affects section _bBetween the explanatory view of relation.In addition, the cross section of the sintering dolly direct of travel quadrature of Figure 17 (b) expression and sintering bed, in Figure 17 (b), H represents sintering bed height, W _bThe width of the section that affects of expression carriage.

If the mark that uses is represented with confirming, then the carriage translational speed is made as v _b, the little vehicle speed of sintering is made as v _p, will be made as θ to the loading angle during charging feedstock on the sintering dolly _p, the angle of inclination that carriage is affected section is made as θ _b, the width of the section that affects of carriage is made as W _b, the sintering bed height is made as H.

Raw material is v in the loading speed of H direction _pTan θ _p(with reference to Figure 17 (a) (b)), on the other hand, carriage affects the tilt angle theta of section _bBy with the carriage movement speed v _bBetween relation determine.Judged by Figure 17 (b), because v _bTan θ _b=v _pTan θ _pIf, therefore to tan θ _bPut this formula in order, then (1) formula shown below is set up.

tanθ _b＝v _p·tanθ _p/v _b····(1)

At this, if consider with which kind of state shown in Figure 15 (a)～(d) can relax the impact of carriage, then as long as the translational speed of carriage more than the low speed shown in Figure 15 (b), is compared with the situation of carriage halted state, just can be evaluated as the impact of firing level little.

And, in the state of Figure 15 (b), because W _b=H/tan θ _b, therefore needing only carriage velocities on the state of Figure 15 (b), following (2) formula is just set up.

W _b≤H/tanθ _b····(2)

If with (1) formula substitution (2) formula, then be W _b≤ Hv _b/ v _pTan θ _pIf, to v _bPutting this formula in order, then is (3) formula.

v _b≥W _b·v _p·tanθ _p/H····(3)

Here, if represent the v of typical sinter machine _p, θ _p, H, W _bValue then as follows.

v _p＝2m/min

θ _p＝40°

H＝600mm

W _b＝200mm

If with these digital substitution (3) formulas, then be v _b〉=0.56m/min just can obtain effect of the present invention as long as the carriage translational speed is the degree of 0.6m/min.

Then, the inventor is on being studied for the condition that further reduces the impact of carriage.

Figure 18 is that this studies employed explanatory view.Figure 18 (a) is the figure that overlooks the section that affects that makes the carriage of carriage when sintering vehicle-width direction comes and goes movement, and Figure 18 (b) is the figure in the expression sintering edge of bed sintering dolly direction of principal axis cross section corresponding with Figure 18 (a).

In Figure 18, B represents the foot (bottom) of raw material loading part, and T represents the topmost (top) of loading part.In addition, Lb represents to connect the length of the Projection Division of straight line on sintering dolly face of BT, and P represents the moving interval of carriage, p _tThe expression carriage affects section in the spacing of sintering dolly direct of travel.θ _pThe loading angle of expression raw material, θ _tExpression B point or T point with respect to the angle of inclination of the line of sintering dolly direct of travel quadrature.In addition, v _pThe translational speed of expression sintering dolly, v _bThe translational speed of expression carriage.

In addition, in Figure 18 (a), with the numeral of square encirclement: in the zone under this numeral, with the cross section of sintering dolly direct of travel quadrature in, this zone affects the number of times of section by carriage from sintering bed upper surface to lower surface.For example, the region representation of numeral " 1 " affects section once to lower surface by carriage from sintering bed upper surface in this regional cross section, for example represent b ', the c ' zone of Figure 14.The zone of digital " 0 " is the zone that not affected by carriage, the region representation of numeral " 2 " be the round movement of carriage toward and be subjected to two subinfluent zones when returning.

If consider and the cross section of sintering dolly direct of travel quadrature, then exist digital " 0 " to exist in identical cross section with the region representation of " 1 " in this cross section and be subjected to the carriage part that affects and the part that not affected by carriage.As above-mentioned, if consider the impact of firing level proportional with the length of the depth direction that affected by carriage, then with the cross section of sintering dolly direct of travel quadrature in, if it is identical being subjected to the number of times of the impact of carriage, then in theory, near the bed bottom in its cross section, firing level is identical.

For example, as shown in figure 19, no matter in any position of sintering dolly direct of travel, be twice as long as be subjected to the number of times that affects of carriage with the cross section of sintering dolly direct of travel quadrature, just can make near the firing level in bed bottom identical.Therefore, obtain be used to the condition that becomes this situation.

At first, as precondition, judge relation below existing from Figure 18.

tanθ _t＝v _p/v _b····(4)

tanθ _p＝H/Lb····(5)

Pt＝2P·tanθ _t＝2P·v _p/v _b····(6)

In any position of sintering dolly direct of travel, be twice if will make cross section with sintering dolly direct of travel quadrature be subjected to the number of times that affects of carriage for no matter, as shown in figure 19, as long as Lb=pt.If make the distortion of (5) formula, then Lb=H/tan θ _pIf, make the right of this formula identical with the right of (6) formula, then become following formula.

H/tanθ _p＝2P·v _p/v _b····(7)

If to v _bArrangement (7) formula then becomes (8) formula.

v _b＝2P·v _p·tanθ _p/H····(8)

If, then become (9) formula with (5) formula substitution (8) formula.

v _b＝2P·v _p/Lb····(9)

Judge from (8) formula, (9) formula, by based on the translational speed of sintering dolly and the translational speed of the moving interval decision carriage of carriage, can reduce as much as possible carriage to the impact of firing level.

If make the carriage translational speed faster, then as shown in figure 20, carriage to affect number of times again inhomogeneous, therefore judge that above-mentioned condition is special conditions.

More than main expression carriage on the impact of firing level and relative therewith effect of the present invention, to the surface shape of sintering dolly, can say it also is identical.

That is, in the situation of fixed carriage, form groove shown in Figure 10, if pattern emphasize and represent that this groove then is the form of Figure 15 (a).If movable support bracket also makes its speed from low speed to changing at a high speed, then groove depth reduces to Figure 15 (d) such as Figure 15 (b).Therefore, represent with the whole width section of sintering bed Figure 15 (c) state be Fig. 5 (b), the jagged shallow slot of residual Fig. 5 (a) and so in overlooking.Proportional with the numerical value with the numeral of square encirclement shown in Figure 18 (a) on this jagged groove depth microcosmic.Therefore, if carriage velocities is maintained in the carriage velocities to (8) formula shown in the countermeasure of firing level or (9) formula, just then jagged groove depth as shown in figure 19, on whole of sintering bed evenly.That is, can be to keep surface shape or bed height just like the state that does not have carriage.

The present invention finishes according to above research and idea, possesses particularly following structure.

(1) raw materials for sintering charging method of the present invention is a kind of by the groove of a plurality of wire classes is set up in the raw materials for sintering supply, thereby the raw materials for sintering charging method of sintering dolly with raw materials for sintering classification and the below of packing into, it is characterized in that, while make the carriage that supports above-mentioned wire class supply with above-mentioned raw materials for sintering round movement of the axis direction of wire class to above-mentioned groove.

(2) in addition, sintering raw material feeding device of the present invention is a kind of by the groove of a plurality of wire classes is set up in the raw materials for sintering supply, thereby the sintering raw material feeding device of sintering dolly with raw materials for sintering classification and the below of packing into, it is characterized in that possessing a plurality of carriages that support above-mentioned wire class and make this carriage come and go mobile tray moving mechanism at the axis direction of above-mentioned wire class.

(3) in addition, in above-mentioned (2) described device, it is characterized in that above-mentioned carriage has the function of wiping raw material powder of being attached on the wire class etc. when carriage moves off.

(4) in addition, in above-mentioned (2) or (3) described device, it is characterized in that the support portion of the support wire class on the carriage has the function that supports above-mentioned wire class and wipes these two kinds of functions of function of the raw material powder that is attached on the above-mentioned wire class etc. off.

(5) in addition, in each described device of above-mentioned (2)～(4), it is characterized in that the interval of a plurality of carriages is set as the interval of predesignating, these a plurality of carriages keep above-mentioned compartment of terrain to move.

(6) in addition, in each described device of above-mentioned (2)～(5), it is characterized in that when by tray moving mechanism carriage being moved, the moving range of the support portion of the support wire class on the carriage is set to the whole width of containing the groove that is formed by the wire class.

(7) in addition, in each described device of above-mentioned (2)～(6), it is characterized in that the drive unit that tray moving mechanism possesses the transfer table that is slidably disposed on sintering vehicle-width direction and analog bracket and this transfer table is slided.

(8) in addition, in above-mentioned (7) described invention, it is characterized in that having fixedly two side in the both sides of sintering dolly, carriage is above-mentioned fixedly mobile between the two side, and the movable distance of carriage is set as more than a plurality of carriages interval each other.

(9) in addition, in the described device in above-mentioned (2)～(8), it is characterized in that possessing drive unit, this drive unit input sintering dolly translational speed is calculated the carriage translational speed based on this input value, and based on this calculated value carriage is moved.

(10) in addition, in each described device of above-mentioned (2)～(9), it is characterized in that, the moving interval of carriage is made as P, the loading height of raw material is made as H, the little vehicle speed of sintering is made as v _p, the loading angle of raw material is made as θ _p, the carriage translational speed is made as v _b, their relation is set as and satisfies following formula.

v _b＝2P·v _p·tanθ _p/H。

(11) in addition, in each described device of above-mentioned (2)～(10), it is characterized in that, with nonmetallic organic substance covering metal silk class.

(12) in addition, in each described device of above-mentioned (2)～(11), it is characterized in that, the translational speed of carriage was set as more than 0.6m/ minute.

In the present invention, owing to move to groove supply raw materials for sintering while the axis direction of the carriage that makes the support wire class in the wire class, therefore can not form groove shape section in the skin section of piling up raw material, and prevent that raw material powder etc. is attached on the wire class, can keep equably the interval of wire class and keep classification performance.

Description of drawings

Fig. 1 is the explanatory view at main position of the sintering raw material feeding device of an embodiment of the invention.

Fig. 2 is the explanatory view of the details of explanation sintering raw material feeding device shown in Figure 1.

Fig. 3 is the explanatory view of the part of explanation sintering raw material feeding device shown in Figure 1.

Fig. 4 is the figure that represents the form of conventional example for the effect that embodiments of the present invention are described.

Fig. 5 is the explanatory view of the effect of explanation embodiments of the present invention.

Fig. 6 is the explanatory view of the effect of explanation embodiments of the present invention.

Fig. 7 is the explanatory view of another form of explanation embodiments of the present invention.

Fig. 8 is the explanatory view of another form of explanation embodiments of the present invention.

Fig. 9 is the explanatory view of another form of explanation embodiments of the present invention.

Figure 10 is the explanatory view that explanation is used for the method for solution problem, is the figure of the existing groove shape of pattern ground expression section.

Figure 11 is the explanatory view that explanation is used for the method for solution problem, is the figure of the state of the smooth groove shape section that in the past produced of expression.

Figure 12 is the explanatory view that explanation be used for to solve the method for problem, is the figure that expression is subjected to part that carriage affects and the size-grade distribution of unaffected part.

Figure 13 is the explanatory view that explanation be used for to solve the method for problem, is that the groove shape section that produces in the situation that carriage is stopped of explanation is on the figure of the impact of firing level.

Figure 14 is the explanatory view that explanation is used for the method for solution problem, is to illustrate that the part of the impact that is subjected to carriage in the situation that has moved carriage is on the figure of the impact of firing level.

Figure 15 is the explanatory view that explanation be used for to solve the method for problem, is near the figure of the position of the firing level in the bottom surface of the range of influence of translational speed and carriage of pattern ground expression carriage and sintering bed.In addition, this figure represents to pattern the groove shape of sintering bed simultaneously.

Figure 16 is the explanatory view that explanation be used for to solve the method for problem, is expression from the cross-section of sintering dolly direct of travel from drum grooves to sintering dolly base feed and load the figure of the state of raw material.

Figure 17 is the explanatory view that explanation be used for to solve the method for problem, is the expression sintering figure with cross section sintering dolly direct of travel quadrature bed.

Figure 18 is the explanatory view that explanation be used for to solve the method for problem, is to merge to overlook to make carriage come and go the figure (scheming (b)) of the figure (figure (a)) of the section that affects of the carriage when mobile and the expression sintering edge of bed sintering dolly axial cross section corresponding with (a) figure and the figure that puts down in writing in sintering vehicle-width direction.

Figure 19 is the explanatory view that explanation is used for the method for solution problem, is the figure that the expression of pattern ground is reduced to the impact of carriage minimum state.

Figure 20 is the explanatory view that explanation be used for to solve the method for problem, is the figure of the state of the pattern ground expression section that affects of overlooking the carriage in the situation of further accelerating the movable support bracket translational speed from state shown in Figure 19.

Among the figure:

The 1-sintering raw material feeding device, 3-wire, 5-wire groove, the 7-drum grooves, 9-sintering dolly, 11-fixed sidewall, 13-movable support mechanism, 15-slider bar, 17,19, the 21-carriage, 17a, 19a, the bend of 21a-carriage, 17b, 19b, the shank of 21b-carriage, 17c, 19c, the hole of 21c-carriage, 23-traveling priority type supporting member, 25-oil cylinder, 27-fixed rack, the 29-control device, the 31-scraper plate, 33-is dull and stereotyped, the 35-rack rails, 37-pinion(gear), 38-electric motor, the 39-spool of wire, the 41-wire, 43-winch, 45-screw shaft, the 47-electric motor, the 49-support portion.

Embodiment

(embodiment one)

Fig. 1 is the explanatory view at main position of the sintering raw material feeding device of an embodiment of the invention.The sintering raw material feeding device 1 of present embodiment is by supplying with raw materials for sintering from drum grooves 7 to the wire groove 5 of setting up many one metal wires 3, thereby the device of sintering dolly 9 with raw materials for sintering classification and the below of packing into, it is characterized in that having 11 wires that set up of fixed sidewall 3 that intermediate strut on one side is arranged at sintering dolly 9 both sides in setting on one side in movable support mechanism 13 that sintering vehicle-width direction moves.

Below, explain the structure as the movable support mechanism 13 of feature of the present invention.

Movable support mechanism 13 possesses: the rectangular-shaped slider bar 15 that arranges above sintering dolly 9, across sintering vehicle-width direction; Be arranged on the slider bar 15 and three

carriages

17,19,21 of support wire 3; With the bottom surface butt of slider bar 15 and support sliding freely the traveling priority type supporting member 23 of slider bar 15 in sintering vehicle-width direction; And the oil cylinder 25 that slider bar 15 is moved in sintering vehicle-width direction.

Each key element that consists of movable support mechanism 13 further is described in detail.

＜carriage 〉

Three

carriages

17,19,21 are arranged on the slider bar 15 at a distance of the intervals of regulation.Each

carriage

17,19,21 possesses circular-arc ground crooked and bend 17a, the 19a, the 21a that tilt and is used for

carriage

17,19,21 is fixed on

shank

17b, 19b, 21b on the slider bar 15, is provided with by wire 3 at

bend

17a, 19a, 21a and inserts logical a plurality of

hole

17c, 19c, 21c.Insert logical be located at hole 17c, the 19c of

bend

17a, 19a, 21a, the wire 3 of 21c if overlook, then along with from the inclination upside of

bend

17a, 19a, 21a to downside, the wire interval broadens.

Be arranged at wire 3 slotting logical three carriages 17 of 11 of fixed sidewalls, 19,21

hole

17c, 19c, 21c, wire 3 its two end supports are supported by

carriage

17,19,21 in fixed sidewall 11 and its midway.In addition, when

carriage

17,19,21 moved, the edge of

hole

17c, 17c, 21c had the function that scrapes raw material powder of being attached on the wire 3 etc.

Three

carriages

17,19,21 interval be not to produce large bending or can not cause wire 3 to depart from the degree set of the position that originally should dispose as giving the suitable length of wire 3 anchorage forces because the rigidity deficiency causes excessive vibration at wire 3.Because this suitable length changes according to conditions such as the thickness of wire 3 and tension force, therefore as far as possible and these conditions coincide and suitably set.

In addition, because each

carriage

17,19,21 is fixed on the slider bar 15, so each

carriage

17,19,21 distance, even slider bar 15 moves, its distance does not change yet, and therefore, is not changed by the anchorage force of each

carriage

17,19,21 support wires 3.

But, be configured in two

ends carriage

17,21 and the distance of 11 of fixed sidewalls change owing to the movement of slider bar 15.Therefore, need to the carriage 17 at two ends, 21 and the longest situation of the distance of 11 of fixed sidewalls under also support wire 3 suitably, therefore, the carriage 17 of both sides, 21 and fixation wall between ultimate range when namely the carriage 21 of a side is with fixed sidewall 11 butt, the distance that the carriage 17 of opposite side and fixed sidewall are 11 is in the scope of the length of support wire 3 suitably.

More than from the viewpoint of support wire 3 suitably

carriage

17,19,21 configuration are illustrated, but need also to consider that

carriage

17,19,21 configuration and its movable range can scrape the viewpoint that is attached to the raw material powder on the wire 3.Namely, need by

carriage

17,19,21 movement, scrape the raw material powder that is attached on the wire 3 by

carriage

17,19,21

hole

17c, 19c, 21c, therefore, move left and right is during one cycle in the drawings for expectation slider bar 15, and wire 3 passes through the

carriage

17,19 at arbitrary place, 21

hole

17c, 19c, 21c at its whole width.Therefore, as long as the spacing that the movable distance of carriage is set between each

carriage

17,19,21 is above.Below, according to Fig. 2 this point is described.

Fig. 2 (a)

expression carriage

17,19,21 moves to the state of the rightmost side, and Fig. 2 (b)

expression carriage

17,19,21 moves to the state of the leftmost side.In Fig. 2 (a), be that the whole width of wire 3 is made as L with the distance of 11 of fixing partitions, be that

carriage

17,19,21 movable distance are made as S with the distance of 11 of the fixed sidewalls in the carriage 17 of the leftmost side and left side,

carriage

17,19,21 distance are made as P.

If make slider bar 15 slips and

carriage

17,19,21 states from Fig. 2 (a) move to the state of Fig. 2 (b), because each

carriage

17,19,21 is from the state of Fig. 2 (a) miles of relative movement S to the left, therefore each

carriage

17,19,21 distances by wire 3 are respectively S, and the summation of three

carriages

17,19,21 distances of passing through is 3S.

Therefore, as long as the relation of 3S 〉=L is arranged, just

carriage

17,19,21 can be by the whole width of wire 3.On the other hand, shown in Fig. 2 (a), because the relation of L=S+2P is arranged, therefore by with this relational expression substitution 3S 〉=L and arrangement, the condition that then is used for the whole width of

carriage

17,19,21 by wire 3 is that S 〉=P is " carriage movably apart from S more than each

carriage

17,19,21 distance P ".

In addition, the distance P of tray chamber and carriage movably apart from S allow maximum length be can be jointly the distance of support wire 3 suitably, these length are made as jointly allow that maximum length is the supporting structure for full blast, this occasion is L=3S=3P.This situation of diagram in Fig. 2.

＜wire 〉

Wire 3 is provided with many at 11 of the fixed sidewalls of both sides, makes many one metal wire 3 horizontal projections if set for, then along with broadening gradually to downside wire interval from the inclination upside.Thus, make the raw materials for sintering classification of being supplied with by drum grooves 7, take in the bottom of the raw material layer of sintering dolly 9 as the coarse grain raw material and on top the mode as the size-grade distribution of particulate raw material pile up.

Cover with nonmetallic organic substance (for example, rubber or plastics etc.) around the preferable alloy silk 3.Thus, raw material powder is difficult to be attached on the wire 3 and the raw material powder that adheres to can easily be scraped by

carriage

17,19,21.

＜traveling priority type supporting member 〉

As shown in Figure 1, traveling priority type supporting member 23 is arranged on the set fixed rack 27 in the both sides of sintering dolly 9, has the function that the movement of slider bar of making 15 becomes round and smooth.

In addition, traveling priority type supporting member 23 is examples, so long as have the structure of the function that the movement of slider bar of making 15 becomes round and smooth, also can be other structures.

＜oil cylinder 〉

Oil cylinder 25 its bars are connected with slider bar 15, can mobile slider bar 15 by bar is stretched.

In the present embodiment, the stretching speed of bar was controlled to be more than 0.6m/ minute.Be set as more than 0.6m/ minute by the stretching speed with bar,

carriage

17,19,21 moves with the speed more than 0.6m/ minute, therefore when supplying with raw materials for sintering,

carriage

17,19,21 existence are difficult to the classification performance of wire groove 5 is brought bad impact.

In addition, expectation oil cylinder 25 is by the expanding-contracting action of control device shown in Figure 3 29 its bars of control.

Control device 29 is by input carriage moving interval P, sintering dolly speed v _pAnd raw material cargo length Lb, calculate the carriage movement speed v according to these numerical value and based on following (9) formula _bThereby, be controlled to be the carriage movement speed v that calculates _b

v _b＝2P·v _p/Lb····(9)

In addition, control device 29 also can be by input carriage moving interval P, sintering dolly speed v _p, raw material charging filling angle θ _bAnd sintering bed height H, according to these numerical value and calculate the translational speed V of carriage based on following (8) formula _b, and be controlled to be the carriage movement speed v that calculates _b

v _b＝2P·v _p·tanθ _p/H····(8)

For example, as the value of typical sinter machine, if use v _p=2m/min, θ _p=40 °, H=600mm, P=1200mm then obtains v _b=6.7/min.

In addition, v _pAs the speed of the sintering dolly of sinter machine, in common sinter machine, manage with the real time, as long as utilize its signal.

In addition, to sintering bed height H, also as long as utilize the signal of same management.But, do not having in the situation of signal, as long as the horizon sensor that detects the sintering bed height is set and is used to signal from set horizon sensor.

In addition, to cargo length L _bAnd loading angle θ _pAlso process by horizon sensor or image and try to achieve, as long as utilize this signal.But, because these values less change, therefore in case mensuration just can be inputted its value by hand.This point also is identical to sintering bed height H.

In addition, also can replace oil cylinder 25 and use electric cylinder or air compressing cylinder.

The raw materials for sintering charging method of the sintering raw material feeding device 1 that uses the present embodiment that consists of as described above then, is described.

Shown in the arrow of Fig. 1, make sintering dolly 9 along in overlooking, moving with the direction of the landing opposite direction of raw material.In addition, drive oil cylinder 25 and make slider bar 15 come and go mobile with certain speed in sintering vehicle-width direction.

Under this state, if by drum grooves 7 raw materials for sintering is sent into wire groove 5, the raw materials for sintering of then supplying with is along the scarp landing of wire groove 5.

Because the gap of the wire 3 on the scarp of formation wire groove 5 is along with broadening gradually to the bottom from top, scarp, therefore raw material is along in the process of the scarp landing of wire groove 5, raw material according to granularity from thin to thick order from wire 3 gap pack on the sintering dolly 9.

On the other hand, because sintering dolly 9 is mobile in the opposite direction with the supplying party of raw materials for sintering, therefore on sintering dolly 9, at first pile up the particle of coarse size, pile up in the above the particle of fine size, thereby form the raw material layer of particle segregation at depth direction.

When supplying with raw materials for sintering to wire groove 5,

carriage

17,19,21 moves in the speed of sintering vehicle-width direction with regulation.Therefore, the

carriage

17,19,21 of support wire 3 does not stop at certain place but often changes its position.Therefore, do not form the groove of the existing issue shape section that becomes in the skin section of piling up raw material.And, by

carriage

17,19,21 movement, always being scraped raw material powder that is attached on the wire 3 etc. by

carriage

17,19,21, the gap that wire is 3 remains on the interval of regulation, thereby can always carry out classification with good state.

As mentioned above, in the present embodiment, by always

mobile carriage

17,19,21 support wires 3 and supply with raw materials for sintering, therefore the skin section of piling up raw material do not form become existing issue with

carriage

17,19,21 the groove shape section that exists for cause, can form the stockpile lamination of suitable particle segregation.And, it or not smooth established groove shape section as described in the patent documentation 1,2, but do not form at first groove shape section, therefore although in the situation of smooth established groove shape section, there is the problem of the size-grade distribution of groove shape section problem different from other positions and so on, there is not this problem.

In addition, in the not mobile conventional example of carriage, for eliminate the groove shape section that produced by carriage (with reference to as Fig. 4 (a) to the Fig. 4 that looks the A-A sectional view (b)), what need to have the described V word of Fig. 4 (a) shape gathers up plate 31, but in the present embodiment, since by make carriage come and go mobile and reduce as much as possible carriage impact (with reference to as Fig. 5 (a) to the Fig. 5 that looks the B-B sectional view (b)), therefore for the smooth section that affects that is formed by carriage, as long as it is just enough that the simple flat plate shown in Fig. 5 (b) is set.At first, this flat board is the parts of adjusting the sintering bed height and arranging at large for final in common sinter machine.

In addition, owing to always

carriage

17,19,21 is moved, therefore can be always scrape the raw material powder that is attached on the wire 3 etc. by

carriage

17,19,21, because the gap of 3 in wire remains the interval of regulation, therefore also be not attached on the wire 3 and the drawback that causes by raw material powder.

In addition, wire 3 is thinner, more can suitably carry out its corresponding size-grade distribution, but if conventional example, if wire 3 is attenuated, then must increase carriage, many if carriage becomes, then form groove shape section, the result can't improve classification performance, in the present embodiment, although be by bracket support but the existence of this carriage does not bring bad impact to classification performance, therefore can increase the carriage number and can make wire 3 as far as possible carefully, can realize more suitable classification.

In addition, in the present embodiment, because form movable support mechanism 13 to be fixed on

carriage

17,19,21 on the slider bar 15 and to make slider bar 15 come and go mobile simple structure, also can be maintained simple and the few effect of fault even therefore supply with the many severe environment of dust of raw materials for sintering and so on.

In addition, as shown in Figure 6, flow if combustion air is pressed air flow line A, then flowing through affects the speed V of air of the B section of section as carriage _BThe speed V of air that does not have the part of carriage impact than flowing through _ABe greatly V _B＞V _A, therefore effect of the present invention diminishes.

But, in fact, the flow channel length Z in the air flow line A situation _AThan the flow channel length Z in the air flow line B situation _BLong, air-flow obviously air flow line B short along flow channel length and that the pressure-losses is little flows, and therefore can obtain fully above-mentioned effect of the present invention.

In addition, following table is shown in the typical sintering bed, Z _ABe Z _BWhat doubly.

At first, the flow channel length Z in the air flow line A situation _AWith the flow channel length Z in the air flow line B situation _BAs follows respectively.

Z _A＝H/sinθ _b

Z _B＝H

In addition, in typical sintering bed, the carriage movement speed v _b, the sintering dolly movement speed v _p, load angle θ _pAs follows.

v _b＝6.7m/min

v _p＝2m/min

θ _p＝40°

Z _A/Z _B＝1/sinθ _b＝(1+(1/tanθ _b) ²) ^1/2

Shown in above-mentioned (1) formula, because tan θ is arranged _b=v _pTan θ _p/ v _bRelation,

Therefore

Therefore,

In addition, maintenance as carriage, be not limited to be fixed on the slider bar 15, for example, also the upper and lower ends of carriage can be fixed on this wire 3 and be arranged on abreast other wires up and down of the wire 3 that consists of wire groove 5 or bar etc., make these wires or bar mobile in sintering vehicle-width direction.

In addition, in above-mentioned example, showed and be fixed on

carriage

17,19,21 on the slider bar 15 and make three

carriages

17,19,21 as one and mobile example, but movable support of the present invention mechanism 13 is not limited to this structure, also can be respectively driven

bracket

17,19,21 and so on mechanism.

In addition, in above-mentioned example, showed the example that three carriages are set, but the quantity of carriage is not limited thereto, as long as satisfy as described above the condition of " carriage movably apart from S more than each

carriage

17,19,21 distance P ", suitably set based on the width of groove etc.

In addition, in the above-described embodiment, at

carriage

17,19,21

hole

17c, 19c, 21c are set, make it have the function of the edge support wire 3 by

hole

17c, 19c, 21c concurrently and scrape the function of the raw material powder that is attached on the wire 3 etc., but also can and have the position that scrapes the function that is attached to the raw material powder on the wire 3 at the position that support wire 3 is set respectively on the carriage.

In addition, in the above-described embodiment, to consisting of the wire class of wire groove 5, having exemplified the example that wire 3 is set and described, but as wire class of the present invention, also can not be wire but bar.

In addition, in the above-described embodiment, as the mechanism that drives slider bar 15, showed the example that uses oil cylinder 25, but drive unit of the present invention is not limited thereto.Fig. 7 is the figure of the another kind of form of the expression mechanism that drives slider bar 15, and Fig. 7 (a) is stereographic map, and Fig. 7 (b) adds movable support mechanism 13 and the figure of record in the sectional view of the length direction of Fig. 7 (a).

As shown in Figure 7, also can adopt in slider bar 15 sides and rack rails 35 is set and makes the mechanism of the rack wheel that the pinion(gear) 37 that utilizes electric motor rotation is engaged with.

In addition, other forms as the mechanism that drives slider bar 15, as shown in Figure 8, also can adopt the structure of having used winch 43, this winch 43 be fixed on for the end with wire 41 slider bar 15 slip direction two places and utilize spool of wire 39 on the turning axle that is arranged on electric motor 38 can side by side reel or pull out the structure of this wire 41.

In addition, as shown in Figure 9, also can be compare weather resistance with the slider bar mode or oversimplify this point poor, but do not use slider bar 15, and use a pair of screw shaft 45 that utilizes electric motor 47 to make abreast configuration to rotate, these screw shaft 45 are inserted in

Support bracket

17,19,21 support portion 49, the structure that the rotation by screw shaft 45 makes

carriage

17,19,21 move at the screw shaft direction of principal axis.In addition, in the situation of structure shown in Figure 9, preferably at spiral part undulatory cover is set.

Claims

1. raw materials for sintering charging method is set up the groove of a plurality of wire classes by raw materials for sintering is supplied with, thereby with the sintering dolly of raw materials for sintering classification and the below of packing into, it is characterized in that,

The shank that supports the carriage of above-mentioned wire class is fixed on and can on the transfer table that sintering vehicle-width direction is slided, makes above-mentioned carriage supply with above-mentioned raw materials for sintering round movement of the axis direction of wire class to above-mentioned groove while this transfer table is slided.

2. sintering raw material feeding device is set up the groove of a plurality of wire classes by raw materials for sintering is supplied with, thereby with the sintering dolly of raw materials for sintering classification and the below of packing into, it is characterized in that,

Possess a plurality of carriages that support above-mentioned wire class and make this carriage come and go mobile tray moving mechanism at the axis direction of above-mentioned wire class,

This tray moving mechanism possesses can be at the slip of sintering vehicle-width direction and the drive unit that is fixed with the transfer table of carriage and this transfer table is slided, and the shank of above-mentioned carriage is fixed on the above-mentioned transfer table.

3. sintering raw material feeding device according to claim 2 is characterized in that,

Above-mentioned carriage has wipes the function that is attached to the raw material powder on the wire class off when carriage moves.

4. sintering raw material feeding device according to claim 3 is characterized in that,

The support portion of the support wire class on the carriage has the function that supports above-mentioned wire class and wipes these the two kinds of functions of function that are attached to the raw material powder on the above-mentioned wire class off.

5. each described sintering raw material feeding device is characterized in that according to claim 2～4,

The interval of a plurality of carriages is set as the interval of predesignating, and these a plurality of carriages keep above-mentioned compartment of terrain to move.

6. each described sintering raw material feeding device is characterized in that according to claim 2～4,

When by tray moving mechanism carriage being moved, the moving range of the support portion of the support wire class on the carriage is set to the whole width of containing the groove that is formed by the wire class.

7. described sintering raw material feeding device is characterized in that according to claim 2～4,

Have fixedly two side in the both sides of sintering dolly, carriage is above-mentioned fixedly mobile between the two side, and the movable distance of carriage is set to more than a plurality of carriages interval each other.

8. each described sintering raw material feeding device is characterized in that according to claim 2～4,

Possess drive unit, this drive unit input sintering dolly translational speed is calculated the carriage translational speed based on this input value, and based on this calculated value carriage is moved.

9. each described sintering raw material feeding device is characterized in that according to claim 2～4,

The moving interval of carriage is made as P, the loading height of raw material is made as H, the little vehicle speed of sintering is made as v _p, the loading angle of raw material is made as θ _p, the carriage translational speed is made as v _b, their relation is set for and is satisfied following formula,

v _b＝2P·v _p·tanθ _p/H。

10. each described sintering raw material feeding device is characterized in that according to claim 2～4,

With nonmetallic organic substance covering metal silk class.

11. each described sintering raw material feeding device is characterized in that according to claim 2～4,

The translational speed of carriage was set as more than 0.6m/ minute.