CN101589160A - Apparatus for manufacturing compacted irons - Google Patents
Apparatus for manufacturing compacted irons Download PDFInfo
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- CN101589160A CN101589160A CNA2007800468772A CN200780046877A CN101589160A CN 101589160 A CN101589160 A CN 101589160A CN A2007800468772 A CNA2007800468772 A CN A2007800468772A CN 200780046877 A CN200780046877 A CN 200780046877A CN 101589160 A CN101589160 A CN 101589160A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/248—Binding; Briquetting ; Granulating of metal scrap or alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/16—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using pocketed rollers, e.g. two co-operating pocketed rollers
- B30B11/165—Roll constructions
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0086—Conditioning, transformation of reduced iron ores
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- Manufacturing & Machinery (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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- Manufacture And Refinement Of Metals (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The present invention relates to an apparatus for manufacturing compacted iron. An apparatus for manufacturing compacted iron includes i) a pair of rolls that compact direct reduced iron and manufacture compacted iron; and ii) a screw feeder that rotates to transfer the direct reduced iron toward a gap formed between the pair of rolls. The screw feeder includes i) a shaft that extends toward the gap; and ii) a screw that is formed on an outer surface of the shaft. A distance from a center axis passing through a center of the shaft to at least one edge of the screw is maintained to be the same or become less as the at least one edge is close to the pair of rolls.
Description
Technical field
The present invention relates to a kind of equipment that is used for making by compression direct-reduced iron DRI compacted irons (compactediron), more particularly, relate to a kind of equipment that is used to make compacted irons, it has improved the transport efficiency of direct-reduced iron.
Background technology
Have many problems owing to be used to produce the blast furnace method of molten pig, for example, therefore environmental pollution, has studied the smelting reduction process of alternative blast furnace method.In smelting reduction process, directly make fuel and reductive agent, and iron ore directly is used as source of iron, thereby makes molten pig with raw coal.Iron ore was changed into reduced iron in reduction reaction after, reduced iron was injected in the melting gasification furnace.Then, reduced iron is melted therein, thereby makes molten pig.
Here, the equipment that is used to make compacted irons by utilization is compressed into compacted irons with direct-reduced iron DRI, then compacted irons is injected in the melting gasification furnace, to guarantee the perviousness of gas in melting gasification furnace.The equipment of making compacted irons comprises helical screw feeder and a pair of roller.Power by helical screw feeder is injected into direct-reduced iron in the gap that is formed between a pair of roller, and then, direct-reduced iron is manufactured to compacted irons.
Summary of the invention
Technical problem
A kind of equipment that is used to make compacted irons is provided, and it can make the compacted irons with high compressive strength effectively by direct-reduced iron being transported to a pair of roller.
Technical scheme
The equipment that is used to make compacted irons according to the embodiment of the invention comprises: i) a pair of roller, and the compression direct-reduced iron is also made compacted irons; Ii) helical screw feeder rotates so that direct-reduced iron is carried towards the gap that forms between described a pair of roller.Helical screw feeder comprises: i) axle, extend towards the gap; Ii) spiral part is formed on the outside surface of axle.Remain unchanged or along with described at least one edge reduces near described a pair of roller from central axis to the distance at least one edge of spiral part at the center of passing axle.
At least one edge can comprise a plurality of edges.Described a plurality of edge can comprise: i) first edge; Ii) second edge, than first edge more near described a pair of roller.Can be equal to or greater than from the second distance at central axis to the second edge of axle from first distance at central axis to the first edge of axle.By from deduct axle the imaginary circles as radius with first distance with first distance be arranged in zone that conplane cross section obtains with by from deduct axle with second distance as the imaginary circles of radius be positioned at the ratio in the zone that conplane cross section obtains with second distance can be in from 1 to 1.4 scope.Described ratio can be essentially 1.2.
Spiral part also can comprise than second edge more near the 3rd edge of described a pair of roller, and can equal second edge from the 3rd distance at central axis to the three edges of axle.First edge can be arranged to corresponding with second edge, and the dummy line that connects first edge and second edge can be basically parallel to the outside surface of axle.Corresponding to first edge the axle first radius can greater than corresponding to second edge the axle second radius.
Axle can comprise the reduced diameter portion branch, the diameter that this reduced diameter portion is divided can comprise that along with reduce spiral part gradually near the gap along the surface that contacts direct-reduced iron towards the direction in gap, the zone on described surface can remain unchanged or can reduce near described gap along with described surface.Along with approaching described gap, described surface, the zone on described surface can reduce to remain unchanged then.
When the zone on described surface remains unchanged, corresponding to described surface the axle diameter near the gap, can reduce.Along with the speed of rotation increase of helical screw feeder, the operational throughput of direct-reduced iron can increase linearly owing to helical screw feeder.
The speed of rotation of helical screw feeder can be in the scope of 50rpm to 100rpm.
Beneficial effect
Because direct-reduced iron is compressed under the situation of the transport efficiency of the raising of helical screw feeder, can make a large amount of compacted irons with good compressive strength.
Description of drawings
Fig. 1 is the perspective schematic view of equipment that is used to make compacted irons according to first embodiment of the invention;
Fig. 2 is the schematic enlarged view of the part II of Fig. 1;
Fig. 3 and Fig. 4 are the figure that shows respectively according to the operational throughput of the direct-reduced iron of illustrative examples 1 of the present invention and 2;
Fig. 5 amplifies diagrammatic sketch according to the partial schematic of the helical screw feeder of the comparative examples of prior art;
Fig. 6 is the figure of demonstration according to the operational throughput of the direct-reduced iron of the comparative examples of prior art;
Fig. 7 is the figure that the ratio according to the operational throughput of the direct-reduced iron of the ratio of the operational throughput of the direct-reduced iron of illustrative examples 1 and 2 and comparative examples is compared mutually.
Embodiment
Below, explain exemplary embodiment of the present invention with reference to the accompanying drawings in detail, so that those skilled in the art in the invention can easily implement the present invention.But the present invention can be not limited to the embodiment of explained later according to the various forms realization.In whole accompanying drawing, anywhere the same numeral of Chu Xianing will be used in reference to same or analogous parts of generation.
Should be appreciated that, though terms such as " first ", " second ", " the 3rd " can be used for describing various elements, assembly, zone, layer and/or part here,, these elements, assembly, zone, layer and/or part should not limited by these terms.These terms only are used for an element, assembly, zone, layer or part and another element, assembly, zone, layer or part are made a distinction.Therefore, under the situation that does not break away from instruction of the present invention, first element described below, assembly, zone, layer or part can be known as second element, assembly, zone, layer or part.
Here all terms that comprise technical term and scientific terminology of Shi Yonging have the implication identical with the implication of those skilled in the art's common sense.Should also be appreciated that, for example those terms that define in normally used dictionary should be interpreted as having and they consistent implications of implication in association area and context of the present disclosure, and should not explaining, unless definition so especially here according to ideal or too formal sensation.
The material that contains iron after direct-reduced iron refers to be reduced.The described material that contains iron not only can be an iron itself, can also be all material that contains iron.For example, the material that contains iron also can contain annexation.The described material that contains iron comprises iron ore.In addition, iron can be pure iron (true iron), ferric oxide or reduced iron.The reduction ratio of reduced iron is unrestricted.Therefore, reduced iron can be reductive partial reduction or complete.
Fig. 1 is the perspective schematic view of equipment 100 that is used to make compacted irons according to the embodiment of the invention.The structure that Fig. 1 shows is used to make the equipment of compacted irons just is used to set forth the present invention, and the invention is not restricted to this.Therefore, the structure that is used to make the equipment 100 of compacted irons can be made amendment according to other form.For example, direct-reduced iron can enter into the gap that is formed between a pair of roller 20, and does not use loading hopper 30.
As shown in Figure 1, the equipment 100 that is used to make compacted irons comprises helical screw feeder 10, described a pair of roller 20 and loading hopper 30.Direct-reduced iron is injected into loading hopper 30 by the intermediary opening 301 that is arranged in loading hopper 30.Ventilation opening 303 is positioned at the upside of loading hopper 30.The gas by the direct-reduced iron generation that enters into loading hopper 30 is discharged into the outside of loading hopper 30 by described ventilation opening 303.
As shown in Figure 1, helical screw feeder 10 is installed in the loading hopper 30, and with inclined at acute angles.Helical screw feeder 10 is by carrying the rotation of motor (not shown).Helical screw feeder 10 rotations are to be transported to direct-reduced iron effectively the gap (not shown) that is formed between the described a pair of roller 20.Therefore, the pressed density that enters into the direct-reduced iron in described gap by helical screw feeder 10 can increase.
Shown in the dotted line among Fig. 1, helical screw feeder 10 comprises axle 101 and spiral part 103.Axle 101 extends towards the gap.Spiral part 103 is formed on the bottom of axle 101.Spiral part 103 forms along the outside surface of axle 101.Therefore, after direct-reduced iron was fallen the downside of loading hopper 30, it was blocked by spiral part 103, thereby entered the gap.Spiral part 103 rotation with direct-reduced iron effectively (in force) inject towards the gap.Therefore, direct-reduced iron can be formed into and have highdensity compacted irons.
As shown by arrows, described a pair of roller 20 compresses direct-reduced iron to make compacted irons simultaneously along the opposite directions rotation.Described a pair of roller 20 rotations are interosculated by gear 201 simultaneously.Described a pair of roller 20 is accommodated in the housing 40.Because the downside of housing 40 opens wide, therefore described a pair of roller 20 compresses direct-reduced irons with the manufacturing compacted irons, and the downside of compacted irons by housing 40 emitted.Explain spiral part 103 in detail with reference to Fig. 2 below.
Fig. 2 has schematically shown the part II that is exaggerated of Fig. 1.That is to say that Fig. 2 has shown the amplification diagrammatic sketch of the spiral part 103 of axle 101 the bottom that is formed on Fig. 1.
As shown in Figure 2, axle 101 has the virtual center axis C that passes its center.Here, central axis C is passed the center by the circle that forms along the direction cutting axis 101 with vertical square crossing of axle 101.
As shown in Figure 2, axle 101 comprises that reduced diameter portion divides 1015, and its diameter is along with axle 101 reduces gradually near the gap.For example, because reduced diameter portion divides 1015, first radius r of axle 101
1Greater than its second radius r
2Because reduced diameter portion divides 1015, guarantee bigger space on downward direction, can be direct-reduced iron, therefore a large amount of direct-reduced irons enter described gap reposefully.Therefore, the output of compacted irons can be improved greatly.
As shown in Figure 2, the spiral part 103 of axle 101 comprises first edge 1031, second edge 1033, the 3rd edge 1035 and the 4th edge 1037.Second edge 1033 is positioned at 1031 belows, first edge, and the 3rd edge 1035 is positioned at 1033 belows, second edge.In addition, the 4th edge 1037 is positioned at 1035 belows, the 3rd edge.Therefore, through second edge 1033 and 1035 to the 4th edges 1037, the 3rd edge, it is close gradually that the gap becomes from first edge 1031.Here, first edge 1031 is corresponding to first radius r of axle 101
1, second edge 1033 is corresponding to second radius r of axle 101
2That is to say first radius r
1With second radius r
2Be positioned on the same line with first edge 1031 and second edge 1033 respectively.
As shown in Figure 2, from the second distance d at central axis C to the second edge 1033
2Less than from central axis C to the first edge 1031 first apart from d
1In addition, from central axis C to the three edges 1035 the 3rd apart from d
3Equal from central axis C to the four edges 1037 the 4th apart from d
4Therefore, along with first edge 1031, second edge 1033, the 3rd edge 1035 and the 4th edge 1037 of spiral part 103 more near the gap, the distance at 103 first edge 1031, second edge 1033, the 3rd edge 1035 and the 4th edge 1037 keeps equating or diminishing from central axis C to spiral part.Therefore, owing to can guarantee that in the bottom of helical screw feeder 10 large space to inject direct-reduced iron, therefore can improve the transport efficiency of direct-reduced iron.
Simultaneously, opposite with Fig. 2, can by any edge of selecting spiral part set up start from central axis C first apart from d
1, second distance d
2, the 3rd apart from d
3With the 4th apart from d
4Therefore, first apart from d
1Can be the 3rd apart from d
3, and second distance d
2Can be the 3rd apart from d
3In this case, first apart from d
1With second distance d
2Identical.In addition, because second distance d
2Can be the 4th apart from d
4, second distance d
2Also can with the 3rd apart from d
3Identical.
With first apart from d
1The first area π d as the imaginary circles of radius
1 2Greater than with second distance d
2Second area π d as the imaginary circles of radius
2 2Here, by from first apart from d
1Deduct in the imaginary circles as radius axle 101 with first apart from d
1The zone that is positioned at conplane cross section and obtains with by from second distance d
2Deduct in the imaginary circles as radius the axle 101 with second distance d
2Be positioned at same flat and cross section and the ratio in the zone that obtains can be in from 1 to 1.4 scope.Aforementioned region can be known as the outstanding transverse cross-sectional area of spiral part 103.
In this case, along with the speed of rotation increase of helical screw feeder 10, the operational throughput of direct-reduced iron is because helical screw feeder 10 linear increasing.If above-mentioned ratio surpasses 1.4, then when helical screw feeder 10 rotated with certain rotation speed, the transport efficiency of direct-reduced iron did not increase.More particularly, above-mentioned ratio can be 1.2 basically.In this case, ideally, the operational throughput of direct-reduced iron can increase along with the speed of rotation of helical screw feeder 10 and increase.On the contrary, if above-mentioned ratio less than 1, even then the speed of rotation of helical screw feeder 10 increases, the also not linear increase of the operational throughput of direct-reduced iron.
Simultaneously, with the 3rd apart from d
3The 3rd area π d as the imaginary circles of radius
3 2Can with the 4th apart from d
4As the long-pending π d of the fourth face of the imaginary circles of radius
4 2Equate.Therefore, the 3rd area π d
3 2With the long-pending π d of fourth face
4 2Ratio can be 1.In this case, with the 3rd apart from d
3Be positioned at conplane axle 101 cross-sectional area and with the 4th apart from d
4The cross-sectional area that is positioned at conplane axle 101 is identical.
The speed of rotation of helical screw feeder 10 can be in the scope of 50rpm to 100rpm.If the speed of rotation of helical screw feeder 10 is less than 50rpm, then owing to little the causing of operational throughput of direct-reduced iron can not be made a large amount of compacted irons.In addition, if the speed of rotation of helical screw feeder 10 surpasses 100rpm, then, a large amount of direct-reduced irons cause excessive load to be applied on the described a pair of roller 20 between the described a pair of roller 20 owing to being injected into.In addition, when carrying a large amount of direct-reduced irons, a large amount of dusts can be scattered in and be used to make outside the equipment 100 of compacted irons.
As shown in Figure 2, the dummy line L that represents by the dotted line that connects first edge 1031 and second edge 1033 is basically parallel to the outside surface 1015 of axle 101.That is to say that dummy line L is parallel to reduced diameter portion and divides 1015 outside surface 101s.Therefore, even the diameter of axle 101 reduces, the zone on the surface 1039 of spiral part 103 also remains unchanged.As a result, injecting reduced diameter portion divides the amount of the direct-reduced iron around 1015 to remain unchanged.
Above-mentioned surperficial 1039 along the direction contact direct-reduced iron towards the gap.The zone on surface 1039 remains unchanged or reduces near the gap time.That is to say that as shown in Figure 2, reduced diameter portion divides the zone on 1015 surface 1039 to remain unchanged.In addition, 1039 zone, surface has a constant radius r what reduced diameter portion was divided axle 101 below 1015
3That part remain unchanged.Axle 101 diameter is along with towards dividing 1015 bottom corresponding to the reduced diameter portion on surface 1039 and reducing.
On the contrary, 1039 zone, surface is dividing 1015 to have a constant radius r to axle 101 from reduced diameter portion
3The connection portion of part reduce.Therefore, the zone on surface 1039 reduces, and has constant radius r then
3 Axle 101 that part ofly be held equal.Therefore, the operational throughput of direct-reduced iron can significantly increase on the ground near the gap.
Explain the present invention in detail hereinafter with reference to illustrative examples.Illustrative examples just is used to show the present invention, but the invention is not restricted to this.
Illustrative examples 1
The equipment that is used to make compacted irons that helical screw feeder is installed by utilization is made compacted irons.First distance between the edge of the central axis of axle and spiral part is measured, and wherein, the described edge of spiral part is formed on direct-reduced iron and enters that part of place in the part that is formed on the spiral part in the helical screw feeder.In addition, the second distance between the edge of the central axis of axle and spiral part is measured, and wherein, the described edge of spiral part is formed on direct-reduced iron and is discharged the place.As the result who measures, first distance and second distance are almost equal.
By utilizing helical screw feeder direct-reduced iron to be filled in the gap that is formed between the described a pair of roller, rotate the compression direct-reduced iron in opposite direction by making described a pair of roller, thereby make compacted irons constantly.In this case, when the speed of rotation of helical screw feeder increases, measure the operational throughput of direct-reduced iron according to the speed of rotation of each helical screw feeder.
The experimental result of illustrative examples 1
Fig. 3 is the figure of demonstration according to the operational throughput of the direct-reduced iron of illustrative examples 1.In Fig. 3, be shown as a plurality of rectangles and rhombus according to the operational throughput of the direct-reduced iron of the speed of rotation of helical screw feeder.As shown in Figure 3, increase to the process of about 125rpm from about 75rpm in the speed of rotation of helical screw feeder, the operational throughput of direct-reduced iron little by little increases.That is to say that the operational throughput of direct-reduced iron increases to 68t/h from 50t/h.Therefore, when use had the helical screw feeder of above-mentioned shape, can determine increased along with the speed of rotation of helical screw feeder, and the operational throughput of direct-reduced iron increases linearly.In this case, the transport efficiency of the direct-reduced iron of the helical screw feeder of measurement is about 0.50.
Illustrative examples 2
The equipment that is used to make compacted irons that helical screw feeder is installed by utilization is made compacted irons.First distance between the edge of the central axis of axle and spiral part is measured, and wherein, the described edge of spiral part is formed on direct-reduced iron and enters that part of place in the part that is formed on the spiral part in the helical screw feeder.In addition, the second distance between the edge of the central axis of axle and spiral part is measured, and wherein, the described edge of spiral part is formed on direct-reduced iron and is discharged the place.As the result who measures, and first distance the outstanding cross section of conplane spiral part with and the cross section given prominence to of second distance at conplane spiral part between ratio be 1.4.Remaining illustrative steps is identical with the remaining illustrative steps of illustrative examples 1.
The experimental result of illustrative examples 2
Fig. 4 is the figure of demonstration according to the operational throughput of the direct-reduced iron of illustrative examples 2.In Fig. 4, be shown as a plurality of rhombuses according to the operational throughput of the direct-reduced iron of the speed of rotation of helical screw feeder.As shown in Figure 4, increase to the process of about 120rpm from about 75rpm in the speed of rotation of helical screw feeder, the operational throughput of direct-reduced iron quite promptly increases.That is to say that the operational throughput of direct-reduced iron increases to 69t/h from 50t/h.Therefore, when use had the helical screw feeder of above-mentioned shape, can determine increased along with the speed of rotation of helical screw feeder, and the operational throughput of direct-reduced iron increases linearly.In this case, the transport efficiency of the direct-reduced iron of the helical screw feeder of measurement is about 0.52.
Comparative examples
Fig. 5 has schematically shown the bottom of the amplification of the helical screw feeder 90 that uses in the comparative examples of prior art, to compare with above-mentioned illustrative examples 1 and 2.As shown in Figure 5, helical screw feeder 90 comprises axle 901 and spiral part 903.Opposite with above-mentioned illustrative examples 1 and 2, the zone on the surface 9039 of spiral part 903 increases gradually towards its underpart.
Use is equipped with the equipment that is used to make compacted irons of the helical screw feeder 90 of Fig. 5 and makes compacted irons.First distance between the edge of the central axis of axle and spiral part is measured, and wherein, the described edge of spiral part is formed on direct-reduced iron and enters that part of place in the part that is formed on the spiral part in the helical screw feeder.In addition, the second distance between the edge of the central axis of axle and spiral part is measured, and wherein, the described edge of spiral part is formed on direct-reduced iron and is discharged the place.As the result who measures, and first distance the outstanding cross section of conplane spiral part with and the cross section given prominence to of second distance at conplane spiral part between ratio be 0.2.Remaining illustrative steps is identical with the remaining illustrative steps of above-mentioned illustrative examples 1.
The experimental result of comparative examples
Fig. 6 is the figure of demonstration according to the operational throughput of the direct-reduced iron of comparative examples.In Fig. 6, be shown as a plurality of rhombuses according to the operational throughput of the direct-reduced iron of the speed of rotation of helical screw feeder.As shown in Figure 6, the speed of rotation of helical screw feeder is increasing to from about 60rpm in the scope of about 120rpm, and the operational throughput of direct-reduced iron is in the scope of 50t/h to 69t/h.But the operational throughput of the most of direct-reduced iron that measures is 58t/h or littler.When the speed of rotation of helical screw feeder is 95rpm or when bigger, just show this operational throughput.Therefore, the speed of rotation of helical screw feeder does not increase pro rata with the operational throughput of direct-reduced iron.In this case, the transport efficiency of the direct-reduced iron of the helical screw feeder of measurement is about 0.2.
Below, with explain above-mentioned illustrative examples 1 and 2 and comparative examples between mutual comparison.For with above-mentioned illustrative examples 1 and 2 and comparative examples compare mutually, the ratio of the operational throughput of direct-reduced iron is set to after 100% when the speed of rotation when direct-reduced iron is 50rpm, shows above-mentioned illustrative examples 1 and 2 and comparative examples with figure.
Fig. 7 is the figure that the ratio according to the operational throughput of the direct-reduced iron of the ratio of the operational throughput of the direct-reduced iron of illustrative examples 1 and 2 and comparative examples is compared mutually.
As shown in Figure 7, when in the scope of speed of rotation at 0rpm to 50rpm of helical screw feeder, in illustrative examples 1 and 2 and in comparative examples, the operational throughput of direct-reduced iron increases linearly.Yet when the speed of rotation of helical screw feeder is 50rpm or when bigger, only in illustrative examples 1 and 2, the operational throughput of direct-reduced iron increases linearly, and in comparative examples, the operational throughput of direct-reduced iron does not increase and remains unchanged.Simultaneously, in illustrative examples 1 and 2, when the speed of rotation of helical screw feeder surpassed 100rpm, the operational throughput of direct-reduced iron no longer increased.Because illustrative examples 1 and 2 just is used to set forth the present invention, and the invention is not restricted to this, under other condition, even the speed of rotation of helical screw feeder surpasses 100rpm, the operational throughput of direct-reduced iron also can increase.
As shown in Figure 7, in illustrative examples 1 of the present invention and 2,, so can make a large amount of compacted irons because the operational throughput of direct-reduced iron increases linearly when in the scope of speed of rotation at 50rpm to 100rpm of helical screw feeder.On the contrary, in comparative examples,, therefore be unsuitable for making a large amount of compacted irons because the operational throughput of direct-reduced iron does not increase when the speed of rotation of helical screw feeder surpasses 50rpm.
Though reference exemplary embodiment of the present invention shows and has described the present invention, it should be appreciated by those skilled in the art that under the situation that does not break away from the spirit and scope of the present invention that are defined by the claims, and can make the various changes on form and the details.
Claims (13)
1, a kind of equipment that is used to make compacted irons comprises:
A pair of roller, the compression direct-reduced iron is also made compacted irons;
Helical screw feeder, rotation to be carrying direct-reduced iron towards the gap that forms between described a pair of roller,
Wherein, helical screw feeder comprises:
Axle extends towards the gap;
Spiral part is formed on the outside surface of axle,
Wherein, remain unchanged or along with described at least one edge reduces near described a pair of roller from central axis to the distance at least one edge of spiral part at the center of passing axle.
2, equipment as claimed in claim 1, wherein, at least one edge comprises a plurality of edges,
Wherein, described a plurality of edge comprises:
First edge;
Second edge, than the close more described a pair of roller in first edge,
Wherein, first distance from central axis to the first edge of axle is equal to or greater than from the second distance at central axis to the second edge of axle.
3, equipment as claimed in claim 2, wherein, by from deduct axle the imaginary circles as radius with first distance with first distance be arranged in zone that the cross section of conplane axle obtains with by from deducting the ratio that is positioned at the zone that the cross section of conplane axle obtains with second distance as the imaginary circles of radius with second distance in from 1 to 1.4 scope.
4, equipment as claimed in claim 3, wherein, described ratio is essentially 1.2.
5, equipment as claimed in claim 2, wherein, spiral part also comprises the 3rd edge than the close more described a pair of roller in second edge,
Wherein, the 3rd distance from central axis to the three edges of axle equals second edge.
6, equipment as claimed in claim 2, wherein, first edge is arranged to corresponding with second edge, and wherein, the dummy line that connects first edge and second edge is parallel to the outside surface of axle.
7, equipment as claimed in claim 6, wherein, corresponding to first edge the axle first radius greater than corresponding to second edge the axle second radius.
8, equipment as claimed in claim 1, wherein, axle comprises the reduced diameter portion branch, the diameter that this reduced diameter portion is divided is along with reducing gradually near the gap.
9, equipment as claimed in claim 1, wherein, spiral part comprises along the surface towards the direction in gap contact direct-reduced iron,
Wherein, the zone on described surface remains unchanged or reduces along with approaching described gap, described surface.
10, equipment as claimed in claim 9, wherein, along with approaching described gap, described surface, the zone on described surface reduces to remain unchanged then.
11, equipment as claimed in claim 9, wherein, when the zone on described surface remains unchanged, corresponding to described surface the axle diameter near the gap, reduce.
12, equipment as claimed in claim 1, wherein, along with the speed of rotation increase of helical screw feeder, the operational throughput of direct-reduced iron is owing to helical screw feeder increases.
13, equipment as claimed in claim 12, wherein, the speed of rotation of helical screw feeder is in the scope of 50rpm to 100rpm.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2006-0132643 | 2006-12-22 | ||
| KR1020060132643A KR100797866B1 (en) | 2006-12-22 | 2006-12-22 | Apparatus for manufacturing compacted irons |
| KR1020060132643 | 2006-12-22 | ||
| PCT/KR2007/006727 WO2008078916A1 (en) | 2006-12-22 | 2007-12-21 | Apparatus for manufacturing compacted irons |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101589160A true CN101589160A (en) | 2009-11-25 |
| CN101589160B CN101589160B (en) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007800468772A Active CN101589160B (en) | 2006-12-22 | 2007-12-21 | Apparatus for manufacturing compacted irons |
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|---|---|
| KR (1) | KR100797866B1 (en) |
| CN (1) | CN101589160B (en) |
| WO (1) | WO2008078916A1 (en) |
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| DE202012104789U1 (en) * | 2012-12-10 | 2014-03-13 | Maschinenfabrik Köppern Gmbh & Co. Kg | roll press |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101072490B1 (en) * | 2004-07-16 | 2011-10-11 | 주식회사 포스코 | An apparatus for manufacturing compacted irons of reduced materials comprising fine direct reduced irons and an apparatus for manufacturing molten irons using the same |
| KR101036642B1 (en) * | 2004-07-09 | 2011-05-24 | 주식회사 포스코 | An apparatus for manufacturing compacted irons of reduced materials comprising fine direct reduced irons and an apparatus for manufacturing molten irons using the same |
| KR101036638B1 (en) * | 2004-07-12 | 2011-05-24 | 주식회사 포스코 | An apparatus for manufacturing compacted irons of reduced materials comprising fine direct reduced irons and an apparatus for manufacturing molten irons using the same |
| KR101036640B1 (en) * | 2004-07-12 | 2011-05-24 | 주식회사 포스코 | An apparatus for manufacturing compacted irons of reduced materials comprising fine direct reduced irons and an apparatus for manufacturing molten irons using the same |
| KR100711765B1 (en) * | 2005-07-11 | 2007-04-25 | 주식회사 포스코 | Apparatus for manufacturing compacted irons of reduced materials comprising fine direct reduced irons and apparatus for manufacturing molten irons provided with the same |
| KR101036639B1 (en) * | 2004-07-16 | 2011-05-24 | 주식회사 포스코 | An apparatus for manufacturing compacted iron of reduced materials comprising fine direct reduced irons and an apparatus for manufacturing molten irons using the same |
| KR101036646B1 (en) * | 2004-07-16 | 2011-05-24 | 주식회사 포스코 | An apparatus for manufacturing compacted irons of reduced materials comprising fine direct reduced irons and an apparatus for manufacturing molten irons using the same |
| KR101118286B1 (en) * | 2004-12-02 | 2012-03-20 | 주식회사 포스코 | Method for manufacturing compacted irons comprising fine direct reduced irons, an apparatus for manufacturing compacted irons comprising fine direct reduced irons, and an apparatus for manufacturing molten irons using the same |
-
2006
- 2006-12-22 KR KR1020060132643A patent/KR100797866B1/en active IP Right Grant
-
2007
- 2007-12-21 WO PCT/KR2007/006727 patent/WO2008078916A1/en active Application Filing
- 2007-12-21 CN CN2007800468772A patent/CN101589160B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| KR100797866B1 (en) | 2008-01-24 |
| WO2008078916A1 (en) | 2008-07-03 |
| CN101589160B (en) | 2012-01-25 |
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