CN101586916B - Material distributing method of iron fine ore composite agglomeration - Google Patents
Material distributing method of iron fine ore composite agglomeration Download PDFInfo
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- CN101586916B CN101586916B CN2009103032357A CN200910303235A CN101586916B CN 101586916 B CN101586916 B CN 101586916B CN 2009103032357 A CN2009103032357 A CN 2009103032357A CN 200910303235 A CN200910303235 A CN 200910303235A CN 101586916 B CN101586916 B CN 101586916B
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Abstract
This invention discloses a material distributing method of iron fine ore composite agglomeration. A material distributing adjuster is mounted in the front of a discharge port of a material distributerand on a sintering machine. Mixed materials are transported by the material distributer. When the mixed materials are moved the bottom end of the material distributer and the sintering machine, a mat erial column is formed between the material distributer and the material distributing adjuster. The front, rear, upper and lower positions, and the horizontal angle of the material distributing adjuster are adjusted. The moving speed of a pellet and the distribution thereof in the material layer are controlled so as to realize the reasonable distribution of the pellet in the mixed material. In theproducing process, the material column is formed between the material distributer and the material distributing adjuster. The front, rear, upper and lower positions, and the horizontal angle of the m aterial distributing adjuster are adjusted. The moving speed of a pellet and the distribution thereof in the material layer are controlled so as to realize the reasonable distribution of the pellet inthe mixed material.
Description
Technical field
The present invention relates to the method for sinter mixture cloth on a kind of continuous pallettype sintering machine, particularly a kind of distributing method that is applicable to the compound when adopting composite agglomeration technology of iron powdered ore.
Background technology
Composite agglomeration technology of iron powdered ore (ZL 200510032095.6), be that the particulate Iron Ore Powder that will partly or entirely be suitable for making ball is told separately and is prepared into pelletizing, remaining iron-bearing material and fuel, flux and mixing granulation such as return mine are prepared into the mixed once material, pelletizing is mixed with into final compound with the mixed once material, be taped against on the continuous pallettype sintering machine then and bake with agglomeration, make the compound iron-smelting furnace charge of forming by acidic pellet ore embedding high basicity sinter.This new technology can sufficiently and reasonably be utilized iron ore deposit, improves permeability of sintering material bed, reduces the SINTERING PRODUCTION energy consumption, improve sintering machine production efficiency, solves the problems such as charging segregation that exist when a high iron low silicon sintering technology difficult problem and blast furnace ironmaking use sintering deposit and pellet jointly.Through the long-term experimental study in laboratory, this new technology has obtained application industrial.
New technology because used compound contains pelletizing, is compared with the normal sintering compound in actual applications, and performance has evident difference.Because pelletizing easily rolls, excessively segregation thereby has proposed new requirement to sintering feed in the sinter bed bottom (near grid section) easily, and promptly pelletizing feed will be distributed in the middle and lower part of sinter bed as much as possible in the compound, avoids segregating to top layer and bottom.If a large amount of pelletizings segregate to the top layer, in ignition process, explosion can take place in pelletizing, reduces permeability of sintering material bed and sintering deposit yield and quality; If a large amount of pelletizings segregate to bottom, the segregation of pelletizing in compound causes the segregation of fuel, be that fuel concentrates on the chassis middle and upper part, make top and middle part sintering deposit burning, cause permeability of sintering material bed variation, sintering velocity to descend, and lower floor is because shortage of heat and underburnt, and the sintering yield and quality descends; Again it, when forming this unreasonable segregation, the pelletizing heating time is short, pellet strength is low.These situations all can cause sinter quality poor, yield poorly.
The most frequently used method of sintering feed has round roller batcher+reflecting plate method and multiple roll cloth method in the current industrial production.These two kinds of distributing methods are the requirements at the ordinary sinter mixture distributor, make sinter mixture form rational segregation, promptly along the sinter bed short transverse, the coarse fraction material is increased to the bottom gradually by bed of material top in the sinter mixture, and fine particle stage material is reduced to the bottom gradually by bed of material top.Can guarantee that like this sintering process is carried out equably, thereby to guaranteeing that the effect that sintering reaches high yield and low consumption has important function.But for the composite agglomeration new technology, as adopt the distributing mode of this class, can cause the undue segregation of pelletizing in the compound, what influence sintering process normally carries out quality with final products.
Summary of the invention
Technical problem to be solved by this invention provides a kind of composite agglomeration technology of iron powdered ore requirement that is applicable to, the compound that contains pelletizing is formed on the belt pallet reasonably distribute, even pelletizing is distributed in the distributing method of iron fine ore composite agglomeration of the middle lower floor of sinter bed on sintering pallet as far as possible.
In order to solve the problems of the technologies described above, the distributing method of iron fine ore composite agglomeration provided by the invention, a cloth adjuster is installed above described distributing device blanking place the place ahead and sintering pallet, compound is transported by distributing device, when compound is displaced downwardly on distributing device bottom and the sintering pallet, between distributing device and cloth adjuster, form stock column, suitably regulate front and back, upper-lower position and the inclination angle in the horizontal direction of cloth adjuster, the following of control pelletizing rolls speed and the distribution in the bed of material thereof, realizes the reasonable distribution of pelletizing in compound.
Cloth system is made up of distributing device and cloth adjuster.Distributing device can be the distribution device (as circle roller batcher+reflecting plate and multi-roller spreader etc.) that adopts in the existing industrial production, for avoiding the segregation excessively downwards of pelletizing, at distributing device blanking place the place ahead design and installation cloth adjuster, the cloth adjuster is apart from distributing device bottom horizontal direction distance 300～500mm, and concrete spacing is regulated according to sinter bed height and delivery rate.End distance pallet bottom 250～350mm under the cloth adjuster, it can be regulated according to the thickness of sinter bed on the sintering pallet equally.Cloth adjuster width and sintering pallet inside is with wide, height 300～500mm, and thickness 10～20mm, the cloth adjuster is adjustable in 0～15 degree with the angle a perpendicular to horizontal direction.Compound is transported by distributing device, when compound is displaced downwardly to the distributing device bottom, because the effect of cloth adjuster forms stock column between distributing device bottom and the cloth adjuster, stoped tumbling fast of pelletizing, and made pelletizing reasonably be distributed in the upper, middle and lower layer of sinter bed.
The distribution device that the present invention developed has following characteristics:
1) adjuster
In distributing device feed the place ahead adjuster is installed vertically.Be to adapt to the requirement of feed character, delivery rate and sinter bed height change, adjuster in front and back, upper-lower position and all can adjust at the inclination angle of vertical direction.In process of production, coarse grain pelletizing and particulate sintering feed form stock column between distributing device and adjuster, stop pelletizing to tumble fast to bed of material bottom, have avoided the undue segregation of pelletizing.
2) type selecting of distributing device is flexible
Any sintering feed device that distributing device of the present invention is adopted in the time of can adopting the common compound of existing both at home and abroad continuous pallettype sintering machine roasting, thereby newly founding the factory or in transformation process, be not subjected to the restriction of material performance and existing sintering feed technology.
In sum, the present invention is a kind of composite agglomeration technology of iron powdered ore requirement that is applicable to, the compound that contains pelletizing is formed on the belt pallet reasonably distribute, even pelletizing is distributed in the distributing method of iron fine ore composite agglomeration of the middle lower floor of sinter bed on sintering pallet as far as possible.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Among the figure:
The 1-distributing device, 2-cloth adjuster, the 3-sintering pallet,
A-cloth adjuster is apart from the distributing device distance from bottom,
B-cloth adjuster height,
C-cloth adjuster is apart from the pallet bottom distance,
The angle of α-cloth adjuster and vertical direction,
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Comparative Examples:
1. the ratio of pelletizing in sinter mixture is 40%, with this compound by distributing device cloth to sintering pallet, without the cloth adjuster.Be divided into 3 layers along chassis bed depth direction, the content of every layer of difference sample analysis pelletizing in this layer, the pelletizing content of bed of material upper, middle and lower accounts for 10%, 20% and 70% of total pelletizing amount respectively.Pelletizing is at the bottom macrosegregation, and sintering can't normally carry out.
Embodiment:
2. referring to Fig. 1, the ratio of pelletizing in sinter mixture is 40%, with this compound by distributing device 1 cloth to sintering pallet 3, adopt cloth adjuster 2, the angle of cloth adjuster 2 angles and vertical direction is 30 degree, and cloth adjuster 2 width and sintering pallet 3 inside are with wide, height 300mm, apart from 300mm, concrete spacing is regulated according to sinter bed height and delivery rate apart from distributing device 1 bottom horizontal direction for thickness 10mm, cloth adjuster 2; 2 times end distance sintering pallets of cloth adjuster, 3 bottom 280mm regulate according to the thickness of sinter bed on the sintering pallet 3.The content of pelletizing in bed of material upper, middle and lower accounts for 31%, 21% and 48% of total pelletizing amount respectively.With compare without adjuster, pelletizing alleviates at the bottom segregation phenomena, but the top segregation increases the weight of.Top layer, igniting back pelletizing has obvious fracture phenomena.
3. referring to Fig. 1, the ratio of pelletizing in sinter mixture is 40%, with this compound by distributing device 1 cloth to sintering pallet 3, cloth adjuster 2 is 15 degree with the angle of vertical direction, cloth adjuster 2 width and sintering pallet 3 inside are with wide, height 500mm, thickness 20mm, apart from 500mm, regulate according to sinter bed height and delivery rate by concrete spacing apart from distributing device 1 bottom horizontal direction for cloth adjuster 2; 2 times end distance sintering pallets of cloth adjuster, 3 bottom 300mm regulate according to the thickness of sinter bed on the sintering pallet 3.The content of pelletizing in bed of material upper, middle and lower accounts for 22%, 38% and 40% of total pelletizing amount respectively, and the distribution of pelletizing in the bed of material is tending towards rationally, and sintering process can normally be carried out, and product quality is good.
4. referring to Fig. 1, the ratio of pelletizing in sinter mixture is 40%, with this compound by distributing device 1 cloth to sintering pallet 3, cloth adjuster 2 is 0 degree with the angle of vertical direction, cloth adjuster 2 width and sintering pallet 3 inside are with wide, height 400mm, thickness 15mm, apart from 400mm, regulate according to sinter bed height and delivery rate by concrete spacing apart from distributing device 1 bottom horizontal direction for cloth adjuster 2; 2 times end distance sintering pallets of cloth adjuster, 3 bottom 250mm regulate according to the thickness of sinter bed on the sintering pallet 3.The content of pelletizing in bed of material upper, middle and lower accounts for 20%, 42% and 38% of total pelletizing amount respectively.The distribution of pelletizing in the bed of material is reasonable, and sintering velocity is moderate, and product quality is good.
5. referring to Fig. 1, the ratio of pelletizing in sinter mixture is 50%, with this compound by distributing device 1 cloth to sintering pallet 3, cloth adjuster 2 is 0 degree with the angle of vertical direction, cloth adjuster 2 width and sintering pallet 3 inside are with wide, height 300mm, thickness 18mm, apart from 350mm, regulate according to sinter bed height and delivery rate by concrete spacing apart from distributing device 1 bottom horizontal direction for cloth adjuster 2; 2 times end distance sintering pallets of cloth adjuster, 3 bottom 350mm regulate according to the thickness of sinter bed on the sintering pallet 3.The content of pelletizing in bed of material upper, middle and lower accounts for 20%, 42% and 38% of total pelletizing amount respectively.The distribution of pelletizing in the bed of material is reasonable, and sintering velocity is fast, and product quality is good.
Claims (2)
1. the distributing method of an iron fine ore composite agglomeration, comprise distributing device, sintering pallet and cloth adjuster, it is characterized in that: a cloth adjuster is installed above described distributing device blanking place the place ahead and sintering pallet, compound is transported by distributing device, when compound is displaced downwardly on distributing device bottom and the sintering pallet, between distributing device and cloth adjuster, form stock column, suitably regulate the front and back of cloth adjuster, upper-lower position and inclination angle in the horizontal direction, the following of control pelletizing rolls speed and the distribution in the bed of material thereof, realizes the reasonable distribution of pelletizing in compound.
2. according to the described method of claim 1, it is characterized in that: described cloth adjuster is apart from distributing device bottom horizontal direction distance 300～500mm, and concrete spacing is regulated according to sinter bed height and delivery rate; End distance sintering pallet bottom 250～350mm regulates according to the thickness of sinter bed on the sintering pallet under the cloth adjuster; Cloth adjuster width and sintering pallet inside is with wide, height 300～500mm, and thickness 10～20mm, the cloth adjuster is adjustable in 0～15 degree with the angle α perpendicular to horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103032357A CN101586916B (en) | 2009-06-15 | 2009-06-15 | Material distributing method of iron fine ore composite agglomeration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103032357A CN101586916B (en) | 2009-06-15 | 2009-06-15 | Material distributing method of iron fine ore composite agglomeration |
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| CN101586916A CN101586916A (en) | 2009-11-25 |
| CN101586916B true CN101586916B (en) | 2011-02-02 |
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| CN102296176A (en) * | 2011-08-18 | 2011-12-28 | 内蒙古包钢钢联股份有限公司 | Burden distribution method of composite agglomeration technology utilized for ultra-fine concentrate |
| CN114543529A (en) * | 2022-03-08 | 2022-05-27 | 石横特钢集团有限公司 | Material distribution method of sintering machine |
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