CN204388606U - A kind of ore deposit groove that effectively can improve sintering quality - Google Patents
A kind of ore deposit groove that effectively can improve sintering quality Download PDFInfo
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- CN204388606U CN204388606U CN201420855633.6U CN201420855633U CN204388606U CN 204388606 U CN204388606 U CN 204388606U CN 201420855633 U CN201420855633 U CN 201420855633U CN 204388606 U CN204388606 U CN 204388606U
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Abstract
The utility model discloses a kind of ore deposit groove that effectively can improve sintering quality, comprise ore deposit groove body (1), the oral area of described ore deposit groove body (1) arranges the shunting overhead guard (2) that vertical sectional shape is " people " font, described shunting overhead guard (2), by being welded on three angle steel on well width direction, ore deposit, forming movable buckle with three angle steel of correspondence position on shunting overhead guard (2) bottom surface and is connected.The utility model chats groove intrinsic sinter mixture temperature is tending towards even, size distribution be groove two ends, ore deposit thin, in be careless or thoughtless by nature, improve the uniformity of mixture temperature and the resonable degree of size distribution on pallet, thus avoid because mixture temperature difference, size distribution are unreasonable and the factor such as sintering " edge " effect superposes the sintering air draft speed non-uniform phenomenon produced, promote the equilibrium of production process, stablize, improve the seed output and quality of sintering deposit, reduce production cost, strengthen the market competitiveness of enterprise.
Description
Technical field
The utility model belongs to smelting iron and steel mechanical equipment technical field, is specifically related to the ore deposit groove that a kind of structure is simple, effectively can improve sintering quality.
Background technology
In iron and steel enterprise sintering circuit for blast furnace ironmaking provide 60 ~ 70% iron-bearing material, the raising of sinter quality and the reduction of cost, to the lifting of whole iron and steel enterprise quality and the reduction of cost, have considerable status.In sintering process, the place that on pallet, mixture temperature is high, " excessive moistening layer " that the water vapour in hot waste gas produces bottom the bed of material is thinner, and the resistance produced sintering exhausting is less, otherwise, then on the contrary; The local sintering velocity causing temperature high is fast, appearance local burning, and the local sintering velocity that temperature is low is slow, appearance local underburnt.The distribution situation of sinter mixture granularity on chassis is directly connected to the size of materialbeds comminution, and the place of coarse size sinters fast, appearance local burning, and the local sintering velocity of fine size is slow, appearance local underburnt.In addition, in the existence of pallet two ends " edge effect ", make the sintering velocity at chassis two ends fast more than center; Sinter cake is in the phenomenon that burning appears in chassis two ends, underburnt appears in center.The existence of these factors all can reduce the Quality and yield of sintering deposit, finally causes the cost increase of iron and steel enterprise.When adopting common ore deposit groove body to carry out preheating to compound, because preheating thermal source used inputs from the surrounding of mixture ore trough, easily there is the phenomenon that compound ambient temperature is higher than center.
On pallet, the temperature at two ends is high, sintering velocity very fast, and the temperature at center is low, sintering velocity is slower.On the other hand, after sinter mixture enters ore deposit groove, produce in the center of ore deposit groove and pile up, compound granularity forms segregation in groove both sides, ore deposit, thick in the middle of compound fineness ratio namely at groove two ends, ore deposit, and bulk density is less than middle.Sintering pallet produces the segregation of compound granularity, the compound coarse size of chassis both sides, good permeability during cloth, the compound granularity in the middle part of chassis is partially thin, poor air permeability.Meanwhile, in sintering process there is " edge effect " in chassis both sides, and namely the air draft speed of pallet both sides is greater than centre.The superposition of these three kinds of factors, exacerbates the inhomogeneities of sintering process, and namely the sintering velocity at chassis two ends is too fast, and sinter cake burn-off phenomenon is serious, and in sintering deposit, glassy phase produces in a large number, causes the yield rate of sintering deposit to decline to a great extent.Therefore, research and develop a kind of ore deposit groove that effectively can improve sintering quality to be very important.
Utility model content
The purpose of this utility model is to provide the ore deposit groove that a kind of structure is simple, effectively can improve sintering quality.
The purpose of this utility model realizes like this, comprise ore deposit groove body, the oral area of described ore deposit groove body arranges the shunting overhead guard that vertical sectional shape is " people " font, described shunting overhead guard, by being welded on three angle steel on well width direction, ore deposit, forming movable buckle with three angle steel of correspondence position on shunting overhead guard bottom surface and is connected.
The utility model, by adding a herringbone shunting overhead guard at the top of existing ore deposit groove body, shunting overhead guard end face is evenly distributed with horizontal apertures.Dropping on the compound on shunting overhead guard end face, under the effect of the horizontal blowing force of gravity and thermal medium, is the downward landing of laminar flow shape along inclined-plane.
On the one hand, be laminar motion when compound flows from top to bottom along shunting overhead guard, increase the contact area with pre-thermal medium, improve the pre-thermal efficiency of compound; Meanwhile, hole diameter is interior large outer little, and have acceleration to thermal medium, the thermal medium that horizontal direction accelerates ejection has " automatic cleaning " effect, can eliminate the phenomenon that compound is bonded in shunting overhead guard end face.Compound is when shunting overhead guard flows to ore deposit groove, and temperature is preheating to more than sintering feed " dew point " temperature, and material temperature is even; Be conducive to reducing the mistake eliminated in sintering process to wet phenomenon, be conducive to the ventilative uniformity improving sinter bed, thus improve sinter quality, output, reduce sintering plant revamp.
On the other hand, after compound flows to ore deposit groove along the shunting overhead guard at groove top, ore deposit, first drop on groove two side, ore deposit, flow in the middle part of the groove of ore deposit after sidewall reflects, such raw granulate fraction is just distributed in the middle part of the groove of ore deposit, and the Relative Size of both sides is thinner.When compound is from the groove cloth to sintering pallet of ore deposit, compound granularity is middle thick in being distributed as of pallet, two ends are thin, thus slackened " edge " effect at chassis two ends in sintering process, improve the reasonable layout of sintering exhausting amount in chassis transverse direction, realize uniforming sintering, improve sintering finished rate, improve sinter quality.
Accompanying drawing explanation
Fig. 1 is the utility model overall structure schematic diagram;
In figure: the groove body of 1-ore deposit, 2-shunts overhead guard, 3-airflow hole, 4-compound.
Detailed description of the invention
Be further described the utility model below in conjunction with accompanying drawing, but must not be limited the utility model by any way, any change done based on the utility model training centre or improvement, all belong to protection domain of the present utility model.
As shown in Figure 1, the utility model comprises ore deposit groove body 1, and the oral area of described ore deposit groove body 1 arranges the shunting overhead guard 2 that vertical sectional shape is " people " font.Described shunting overhead guard 2, by being welded on three angle steel on well width direction, ore deposit, forming movable buckle with three angle steel of correspondence position on shunting overhead guard 2 bottom surface and is connected.
Described shunting overhead guard 2 is evenly arranged the airflow hole 3 of level.
Two flanks of described shunting overhead guard 2 and the angle of horizontal direction are 45 ° ~ 75 °.
Described airflow hole 3 is bellmouth, and the aperture being in shunting overhead guard 2 outer surface is less than the aperture of shunting overhead guard 2 inner surface.
The airflow hole aperture of described shunting overhead guard 2 outer surface is 1 ~ 2mm, and the airflow hole aperture of shunting overhead guard 2 inner surface is 2 ~ 4mm.
Described shunting overhead guard 2 is divided into upper and lower two parts, and top is divided into inclined wall, and bottom is divided into cavity two parts, and described airflow hole 3 is horizontally placed on inclined wall.The thickness of described cavity structure is 12 ~ 100mm.
The cross section of described ore deposit groove body 1 is that top Opening length is greater than the trapezoidal of base length.
The aperture of described shunting overhead guard 2 lower end is alignd with ore deposit groove body 1 slot bottom width.
operation principle of the present utility model and the course of work
The utility model, by adding a herringbone shunting overhead guard 2 at the top of existing ore deposit groove body 1, shunting overhead guard 2 end face is evenly distributed with horizontal apertures 3.Dropping on the compound on shunting overhead guard end face, under the effect of the horizontal blowing force of gravity and thermal medium, is the downward landing of laminar flow shape along inclined-plane.On the one hand, be laminar motion when compound flows from top to bottom along shunting overhead guard, increase the contact area with pre-thermal medium, improve the pre-thermal efficiency of compound; Meanwhile, hole diameter is interior large outer little, has acceleration to thermal medium, the thermal medium that horizontal direction accelerates ejection has " automatic cleaning " effect, be conducive to the ventilative uniformity improving sinter bed, thus improve sinter quality, output, reduce sintering plant revamp.On the other hand, after compound flows to ore deposit groove along the shunting overhead guard at groove top, ore deposit, first drop on groove two side, ore deposit, flow in the middle part of the groove of ore deposit after sidewall reflects, such raw granulate fraction is just distributed in the middle part of the groove of ore deposit, the Relative Size of both sides is thinner, slacken " edge " effect at chassis two ends in sintering process, improved sintering exhausting amount at the reasonable layout of chassis transverse direction, realize uniforming sintering, improve sintering finished rate, improve sinter quality.
Claims (9)
1. one kind effectively can be improved the ore deposit groove of sintering quality, comprise ore deposit groove body (1), it is characterized in that: the oral area of described ore deposit groove body (1) arranges the shunting overhead guard (2) that vertical sectional shape is " people " font, described shunting overhead guard (2), by being welded on three angle steel on well width direction, ore deposit, forming movable buckle with three angle steel of correspondence position on shunting overhead guard (2) bottom surface and is connected.
2. the ore deposit groove that effectively can improve sintering quality according to claim 1, is characterized in that: the airflow hole (3) described shunting overhead guard (2) evenly being arranged level.
3. the ore deposit groove that effectively can improve sintering quality according to claim 1 and 2, is characterized in that: described two flanks of shunting overhead guard (2) and the angle of horizontal direction are 45 ° ~ 75 °.
4. the ore deposit groove that effectively can improve sintering quality according to claim 2, is characterized in that: described airflow hole (3) is bellmouth, and the aperture being in shunting overhead guard (2) outer surface is less than the aperture of shunting overhead guard (2) inner surface.
5. the ore deposit groove that effectively can improve sintering quality according to claim 1 and 2, is characterized in that: the airflow hole aperture of described shunting overhead guard (2) outer surface is 1 ~ 2mm, and the airflow hole aperture of shunting overhead guard (2) inner surface is 2 ~ 4mm.
6. the ore deposit groove that effectively can improve sintering quality according to claim 1 and 2, it is characterized in that: described shunting overhead guard (2) is divided into upper and lower two parts, top is divided into inclined wall, and bottom is divided into cavity two parts, and described airflow hole (3) is horizontally placed on inclined wall.
7. the ore deposit groove that effectively can improve sintering quality according to claim 6, is characterized in that: the thickness of described shunting overhead guard (2) is 12 ~ 100mm.
8. the ore deposit groove that effectively can improve sintering quality according to claim 1, is characterized in that: the cross section of described ore deposit groove body (1) is that top Opening length is greater than the trapezoidal of base length.
9. the ore deposit groove that effectively can improve sintering quality according to claim 6, is characterized in that: the aperture of described shunting overhead guard (2) lower end is alignd with ore deposit groove body (1) slot bottom width.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420855633.6U CN204388606U (en) | 2014-12-30 | 2014-12-30 | A kind of ore deposit groove that effectively can improve sintering quality |
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| CN201420855633.6U CN204388606U (en) | 2014-12-30 | 2014-12-30 | A kind of ore deposit groove that effectively can improve sintering quality |
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| CN204388606U true CN204388606U (en) | 2015-06-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106556254A (en) * | 2016-11-08 | 2017-04-05 | 首钢总公司 | A kind of method and device for avoiding sintering edge grid section scaling loss |
| CN106940327A (en) * | 2017-05-08 | 2017-07-11 | 山东钢铁股份有限公司 | A kind of novel sintered cup experimental provision |
| CN113210257A (en) * | 2021-05-13 | 2021-08-06 | 新疆八一钢铁股份有限公司 | Full-width feeding control method for sintering ore screening machine |
-
2014
- 2014-12-30 CN CN201420855633.6U patent/CN204388606U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106556254A (en) * | 2016-11-08 | 2017-04-05 | 首钢总公司 | A kind of method and device for avoiding sintering edge grid section scaling loss |
| CN106940327A (en) * | 2017-05-08 | 2017-07-11 | 山东钢铁股份有限公司 | A kind of novel sintered cup experimental provision |
| CN106940327B (en) * | 2017-05-08 | 2023-09-01 | 山东钢铁股份有限公司 | Novel sintering cup experiment device |
| CN113210257A (en) * | 2021-05-13 | 2021-08-06 | 新疆八一钢铁股份有限公司 | Full-width feeding control method for sintering ore screening machine |
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