CN110300809A - The method for operating balling equipment - Google Patents
The method for operating balling equipment Download PDFInfo
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- CN110300809A CN110300809A CN201880011119.5A CN201880011119A CN110300809A CN 110300809 A CN110300809 A CN 110300809A CN 201880011119 A CN201880011119 A CN 201880011119A CN 110300809 A CN110300809 A CN 110300809A
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- ball
- byproduct
- agglomerate
- green
- hardening
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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
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
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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
- C22B1/2413—Binding; Briquetting ; Granulating enduration of pellets
-
- 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
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
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- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
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- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of methods for operating balling equipment, and the balling equipment is for smelting iron, making steel and the extra process of pellet factory residue.The balling equipment includes hardening furnace, is packed into green-ball ball wherein and fires to produce hard sphere ball.This method comprises: preparing iron ore green-ball ball；And the green-ball ball is packed into and fired in hardening furnace.The salient of this method is to be packed into byproduct agglomerate in hardening furnace and fires to produce the pellet of hardening and the byproduct agglomerate of hardening together with green-ball ball.Additionally provide a kind of balling equipment comprising pelletizing part (16), hardening furnace (12) and the agglomeration part (40) for generating byproduct agglomerate.Feeding device is configured as byproduct agglomerate being fitted into the hardening furnace together with green-ball ball.
Description
Technical field
The present invention relates generally to ironmaking fields.More particularly, it relates to by pelletizing come agglomeration iron ore, and specifically
The method for being related to operating balling equipment.
Background technique
As it is known in the art, blast furnace is adverse current gas solid reactor, solid is packed into material to moving down in the reactor
It is dynamic and hot reducing gas flows up.Best may contact between solid and reducing gas is obtained by permeable load
, this not only allows for the fair speed of air-flow, but also allows uniform air-flow, while having the smallest gas passage.
In this respect, agglomeration process has been developed, so as to improve load permeability using fine material, thus
It reduces blast-furnace coke rate and improves reduction rate.They also allow to reduce the fine material that gas recovery system is blown into from blast furnace
Amount.In addition, when agglomerated material has chemical composition appropriate, they, which can replace to be used as, is packed into ore in iron-smelting furnace
Massive ore.
Especially for blast furnace, sintering and pellet forming process are current two main aggregation process.By by size 0.5 to
The crude iron ore fraction of 3mm, which is melted and sintered into, manufactures sintered ore having a size of 5 to 50mm product.Sintering process uses burnt
The combustion heat of powder (fuel).
Pellet is made of the iron ore more tiny than the iron ore for sintered ore.Tiny ore can be relatively easily
Orbicule, referred to as green-ball are formed, usually there is the diameter from 9 to 18mm range.Green-ball is fired into hard tough products pellet, i.e. institute
The hardening pellet of meaning or simply pellet.
Because these pellets are well adapted for the raw material as blast furnace but also are suitable for direct reduction furnace, they cause
Great interest.
US 3,864,119 discloses a kind of method and apparatus, for producing two kinds of sizes simultaneously using tiny mineral ore
The thermmohardening pellet of range.The green-ball ball of smaller size is produced in balling-up drum and is sent to the hardening list including fire grate and rotary kiln
Member.After rotary kiln, the hardened ball with predetermined size is collected on a series of decks, and these balls are sent to feedback loop.Instead
Being fed back to road includes pan-pelletizer to form biggish ball.Then the biggish ball is placed on the bed of the green-ball ball of the smaller size simultaneously
It is sent into hardening unit.According to traditional pelletizing process, both which is made of iron ore.
US 3,333,951 discloses a kind of technique for producing metallized iron ore stone pellet.Method includes the following steps:
Solid carbonaceous material and steam are mixed with iron ore, wet mixing pellet is formed, hardens pellet, mixed with wet ore
Object coats the pellet of the hardening, and makes pellet underhardening again.Similar to US 3,864,119, by them and green-ball ball together
It is packed into before curing system, the pellet of predetermined size is collected after the hardening process, and undergoes agglomeration process with iron ore.
US 2015/128766 discloses a kind of pellet forming process, and there are two different successive stages for tool, for utilizing iron
Ore produces green-ball ball.The document particularly discloses a kind of for having the feeding device of the curing system there are two balling disk (-sc).
In general, pellet forming process is ideal for the agglomeration of iron ore concentrate fine crushing because they usually have it is such tiny
Size, so that they are not difficult to form green-ball.In some cases, the essence sand and high-grade ore that are dimensionally not suitable for pelletizing are ground
It is broken into required size.
Have built up balling equipment, target be under stringent environmental legislation production for blast furnace material modern state
In family, the interest of pellet has been increased.
Though words so say, sintering is still an attractive technique because it allow handle ore and ironmaking and
The flexibility of the byproduct for commonly referred to as " returning to material " of steel industry (oxide and metallic dust).
Goal of the invention
The object of the present invention is to provide a kind of improvement concept of balling equipment, can handle for greater flexibility iron ore and by
The byproduct of integration apparatus or the direct-reduction cellular manufacture of pellet equipment.
The purpose passes through method claimed in claim 1 such as and realizes.
Summary of the invention
In view of this purpose, pelletizing is operated using traditional ore raw materials and some byproducts the invention proposes a kind of
The method of equipment.Balling equipment includes hardening furnace, is packed into and fires green-ball ball in the hardening furnace to produce hard sphere ball.This method
The following steps are included: green-ball ball of the preparation based on iron ore；And green-ball ball is packed into and fired in hardening furnace.Pass through routine
Balling equipment, such as balling-up drum and/or disc balling machine form pellet to prepare pellet will pass through to ball up raw material.
According to an important aspect of the present invention, the byproduct of previous agglomeration is packed into hardening furnace and together with green-ball ball
It fires, to generate the pellet of hardening and the byproduct agglomerate of hardening in hardening furnace.
Therefore, of the invention one significant aspect is that byproduct agglomerate and green-ball ball are handled in hardening furnace.In other words
Say, byproduct agglomerate and green-ball ball in hardening furnace concurrently/simultaneously carry out the identical heat treatment of hardening for them.
Term " byproduct " is commonly used to refer to ironmaking, steel-making, pelletizing and direct-reduction waste material herein, and usually may be used
To include below one or more: copper smelter slag, waste material fine powder, oxide fine powder, is collected in waste line at oxide skin
Powder and sludge, the fine powder powder from sieve unit, sludge iron content or the blast furnace byproduct containing fluxing agent.These byproducts,
It also referred to as " returns to material ", usually can have the size within the scope of 0.045 to 5mm.
As known in the art, preferably via pressure roller by compaction process come agglomeration byproduct, it is attached to form byproduct
Polymers.Byproduct optionally can be handled together with additive (such as lime, adhesive etc.) in extrusion or roller apparatus, with
Form the bulk product with predetermined shape and size.So-called cuber, which can be used for preparing, has the size of non-spherical shape big
In the lumps agglomerate of pellet.Preferably, byproduct agglomerate/agglomerate (in all dimensions) has the minimum ruler of 20mm
It is very little.For example, agglomerate can be 20 × 30 × 30 or 20 × 20 × 40, indicated with mm, or even more big, for example, 50 × 40 ×
100.Agglomerate is formed as bulk product, usually aspherical.They usually have low sphericity, formation quite ellipse
Product, including pulvilliform and parallelepiped shape, rectangle and elliptical shape and their combination.In some embodiments,
Bulk product can have circular shape, but have low sphericity.
Byproduct agglomerate preferably has the size bigger than pellet, and is placed in hardening furnace on the top of pellet
To allow the longer firing duration.
It should be appreciated that in the process according to the present invention, briquetting type agglomeration process is used to produce byproduct agglomerate, with
Green-ball ball is fitted into hardening furnace together.This is contrasted with conventional plant, and in conventional plant, agglomerate is not by thermmohardening and straight
It is hinged in blast furnace or electric furnace.
The big advantage of of the invention one is to provide a kind of pellet forming process and equipment, is suitable for ironmaking of the substitution based on coal completely
Sintering plant in device.Another big benefit is for the iron-smelter based on gas, this technique provides circulating technology wherein.It is real
On border, with the sintering plant challenge by the more tiny iron ore of higher amount more and more, the present invention is operating blast furnaces
Client provides attractive alternative techniques route.The present invention for using iron ore pellet operated based on gas
Iron-smelter is especially interested, and wherein this technique allows to be produced pellet with a kind of technology and handles institute's by-product-and mesh
It is preceding that such iron waste is transferred to other facilities entered other than factory boundary based on the iron-smelter of gas.Therefore, structure of the present invention
Waste management strategy at the attractive solution in terms of also solution environment, i.e., in circulating technology.
Pellet usually being prepared using balling-up equipment in ball portion in factory, balling-up equipment production are spherical or spherical
Agglomerate, referred to as green-ball ball or green-ball.Any suitable equipment, especially balling-up drum or disc balling machine can be used.Pellet
It being prepared by particulate mixture, the particulate mixture mainly includes iron-bearing materials, especially iron ore and some additives,
Especially adhesive (such as bentonite).Prepare the particle size for having lower than 0.15mm for the material of balling-up, about
80% is lower than 45 μm (that is, slightly less than 325 mesh).
In the art, green-ball ball generally preferably includes at least 61% iron ore, with 9 to 18mm, preferably 9 to 14mm model
Interior diameter is enclosed, usually with the average diameter of about 12mm.
Hardening furnace can be based on any technology appropriate, for example, travelling grate furnace, fire grate-kiln-cooler or cyclic hardening
Furnace.
Preferably, byproduct agglomerate and green-ball ball are loaded in the charging conveying of hardening furnace in a manner of two stacked layers
On machine, upper layer mainly includes byproduct agglomerate, and lower layer mainly includes green-ball ball.
Advantageously, it is charged by separative unit, the separative unit receives green-ball ball and byproduct agglomerate, and base
The latter is distributed in the upper and lower in particle size.
In general, the heat treatment in the hardening furnace can carry out in oxidation air, the thus pellet of obtained hardening
Have with the blocky byproduct agglomerate of hardening and is lower than 50%, preferably shorter than 10%, more preferably less than 5% metallization.
In some embodiments, byproduct agglomerate may include coarse grain iron ore, generally can not be located by pelletizing
Reason, but it is no more than 50wt.%, preferably more than 20wt.%.
These and other feature of this technique is also documented in appended dependent claims.
The present invention relates to a kind of balling equipments according to another aspect, comprising:
Pelletizing part, for producing the green-ball ball including tiny iron ore；
Hardening furnace, for the green-ball ball to be fired into the pellet of hardening；
Feeding device is configured as the green-ball ball being enclosed on the charge conveyor of the hardening furnace；And
It is characterized in that, it further includes the agglomeration part for producing byproduct agglomerate, and it is the charging dress
It sets and is additionally configured to for the byproduct agglomerate being fitted into the hardening furnace together with the green-ball ball.
The above and other feature of this balling equipment is also documented in appended dependent claims.
According to another aspect of the present invention, this method can use mainly by (be higher than 50wt.%) crude iron ore rather than
The agglomerate of byproduct composition, or utilize less amount of byproduct (being less than 50wt.%, that is, be less than 30wt.%) Lai Shixian.
Detailed description of the invention
The present invention is described by way of example with reference to the drawings, in which:
Fig. 1: being the process schematic representation of balling equipment according to an embodiment of the invention.
Specific embodiment
It is well known that the balling equipment of Iron industry is usually directed to following technique:
Pretreatment is especially ground；
Balling-up；
Hardening.
Balling equipment according to the present invention, embodiment are shown in figure, and also rely on these three techniques, these techniques exist
It is briefly described below.
In the pretreatment stage, iron ore is milled to the particulate of quality needed for having subsequent balling technique.In advance
Processing usually may include concentration, dehydration, grinding, dry and pre-wet.In general, rudimentary iron ore is ground into particulate to mention
The quality of high iron ore removes the gangue of sulfur-bearing and phosphorus and the size of control particle.
Following three aspects are generally concerned with come traditional grinding method of classifying:
1) wet lapping-dry grinding；
2) the closed circuit grinding of open circuit grinding-；
3) single-stage grinding-multistage grinding.
In view of economic feasibility, these methods are applied in combination according to the type of ore and feature and mixed proportion.
Secondly, the target of balling technique is to pre-wet material using what is prepared in the prior art and produce spherical green-ball ball
(also referred to as green-ball).Balling-up equipment may include balling-up drum or disc balling machine, they are used most widely for forming green-ball.
In hardening process, green-ball ball is fitted into furnace, they are fired to increase their hardness in the furnace.Below
Furnace system can be used for hardening pellet: travelling grate (straight to comb) system and fire grate-kiln-chiller system.Travelling grate system by
Individual unit composition, the mobile static pellet layer of the unit.The system has for drying, preheating, fire and cooling down pellet
Simple structure.Since it is relatively easy to operate, and it is easily enlarged scale, so that the system is as what many factories used
System.Fire grate-kiln-chiller system is mainly by separately designing for drying/preheats, fires and cools down the fire grate of pellet, kiln and cold
But device forms.The system allows the residence time in individually each region of control furnace.
Fig. 1 shows the schematic diagram of one embodiment according to this balling equipment 10.Pretreatment part can be used
For grinding and handling the above-mentioned conventional material or any other equipment appropriate of large material.
Appended drawing reference 12 indicates hardening furnace comprising for material to be transmitted to the conveyer unit 14 of furnace 10 everywhere.Firmly
Changing furnace 12 is preferably travelling grate type.In general, furnace 12 includes the region (not shown) for drying, preheating, fire and cool down.
Four regions arrange one by one.Each region is maintained at predetermined temperature, and passes through hot-air and/or burning gases
Heat exchange occurs to fire pellet.In travelling grate furnace 12, charge conveyor includes being made of the fire grate bar with side wall
Annular fire grate vehicle is packed into pellet (usually on one layer of fired material) wherein.Green-ball ball on fire grate passes through this
A little regions for drying, preheating, firing and cooling down.
In the exit of furnace, the pellet of hardening and the byproduct agglomerate of hardening are discharged together, and can sieve with logical
Particle size is crossed to separate them.
It should be appreciated that two kinds of material is sent into hardening furnace: green-ball ball and similar agglomerate in this balling equipment 10
Byproduct agglomerate.
In Fig. 1, it is recognized that traditional at ball portion 16.It includes storage bin 18, and storage bin 18 includes to prepare
For balling-up to the fine material in associated balling-up equipment 20.The storage bin is located at one group of raw material storage bin of preprocessing part
The downstream of 17a and mixer equipment 17b.The desired raw material being formulated is prepared on conveyer belt 17c and is transported to mixer equipment
17b.Then each case 18 is sent by mixture.Balling-up equipment 20 can be balling-up drum or disc balling machine.It is set in the balling-up
In standby, raw material is rolled into ball, referred to as green-ball.As is generally known, in drum/disk rolling movement, raw material agglomeration is to form
Ball.This is not usually in the case where having any molding or external component to apply compacting or pressing force.In balling-up equipment 20
The green-ball of formation is transported to furnace 12 in main collecting conveyor 22, usually belt conveyor, by qualified green-ball ball.Pass through roller
Sieve 24 green-ball ball is transported on conveyer 22.The roller of roll screen 24 is configured such that the green-ball ball with desired size
Into main collecting conveyor 22, and by undersized and oversized pellet and fines segregation and collect to be recovered to case
18.Recycling route is designated as 26.In general, collected material recovery is to case 18 or can also be transported to hybrid system with appropriate
Ground is homogenized all raw materials to be suitable for balling-up.
Storage bin 18 includes the mixture for getting out mixing material, depends on the desired composition of green-ball ball.In general, should
Mixture includes at least one particulate iron ore, usually has slightly less than 320 mesh, and at least one additive, for example, swelling
Soil or lime stone.Subordinate list 1 and 2 lists the possibility material and its attribute for being used to prepare green-ball ball.
It should be appreciated that this balling equipment 10 further includes agglomeration part 40, it is used to form return material product agglomerate.It can see
Out, the agglomerate formed in the portion is also transported to hardening furnace 12.In an illustrated embodiment, byproduct agglomerate and life
Pellet is discharged to together on main collection conveyer belt 22.
Agglomeration part 40 include with will agglomeration byproduct storage bin 42.Byproduct can store in storage bin 42
In the case 41a of upstream.The byproduct of one or more types is discharged on the conveyor belt and optionally via mixing/milling apparatus
41c is sent to storage bin 42.Then these materials usually are compacted via pressurization roller apparatus 44, are produced with forming the blocky of predetermined size
Product.It is formed by aggregation and is discharged in sieve 46 from equipment 44, wherein as shown in return line 47, undersized material
It is recovered to storage bin 42, while qualified agglomerate is sent on main collecting conveyor 22.
Table 3 in annex gives the exemplary column for the byproduct that can be used for that agglomerate is prepared under the background of this technique
Table and typical particle size.
As can be seen in the figure, green-ball ball and byproduct agglomerate are preferably packed into furnace 12 in a manner of two stacked layers
In.Lower layer 50 on travelling grate 14 mainly includes green-ball ball.Top layer 52 is mainly formed by byproduct agglomerate.
In this embodiment, furnace feed unit 54 includes double-deck roll sieve apparatus, which includes stacked roller
Group, the stacked roller group are configured to for agglomerate to be transported to the furnace.Top roller device 541It is configured to send byproduct agglomerate to
The furnace, and lower roller arrangement 542It is configured to green-ball ball being transported to the furnace.As it will be appreciated, limiting top roller 541Between interval with
So that green-ball ball passes through the roller and falls on lower roll 542On.Similarly, lower screen cloth 542Roller spacing make will have given minimum dimension
Green-ball ball be transported in the furnace, and undersized green-ball ball, particle and particulate pass through lower screen cloth 542It falls and is collected.
Each sieve 541With 542End be placed so that green-ball ball is first deposited upon on furnace conveyer 14, form the
One layer 50, and agglomerate is deposited on first layer 50 to form the second layer 52 by the second sieve.
Ratio between green-ball ball and byproduct agglomerate, especially every layer 50,52 of thickness can be conveyed by adjusting
The quantity of pellet and agglomerate on to main collecting conveyor 22 changes.
In lower screen cloth 542Locate undersized green-ball ball, particle and the particulate collected and returns to storage via return path 56
Case 42 is deposited, to recycle into agglomerate.It should be noted that work as agglomeration part 40 at runtime, all rulers from furnace feed system 54
Very little too small material is preferably transported to storage bin 42.
Alternatively, in lower screen cloth 542Pellet, particle and the particulate that place is collected can be recovered to pelletizing part 16, such as return to road
Shown in line 58 (dotted line).This is return path, i.e. the use when agglomeration part 40 does not work.
In other embodiments, presently described technique and equipment can use the agglomerate behaviour being mainly made of crude iron ore
Make, i.e., with the particle size for being more than 0.150mm, usually in the range of 0.150-5.0mm.This agglomerate is equally in agglomeration
It is prepared in part.In being formed by blocky agglomerate, coarse grain iron ore content is higher than 50wt.% and can be up to
80wt.% or higher.They can also return to material comprising a part, that is, be less than 50wt.%, and be, for example, less than 20wt.%.,
Can identical scheme and additive be used with reference to return material as described above.
| Iron ore concentrate | Bentonite | Lime stone | ||
| Fetot | %wt | 68 | n.d. | n.d. |
| FeO | %wt | 16 | n.d. | n.d. |
| CaO | %wt | 0.5 | 1.4 | 50 |
| MgO | %wt | 1.5 | 2.4 | 0.8 |
| SiO2 | %wt | 1 | 60 | 12.3 |
| Al2O3 | %wt | 1 | 12 | 1.3 |
Table 1
Table 2
Claims (21)
1. a kind of method of balling equipment of operation for iron-smelting furnace, the balling equipment are included therein loading and fire green-ball
Ball is to produce the hardening furnace of hard sphere ball, which comprises
Iron ore green-ball ball is prepared using balling-up drum and/or disc balling machine；
The green-ball ball is packed into and fired in hardening furnace；
It is characterized in that, preparing byproduct agglomerate by being compacted to form bulk product；And it is in the hardening furnace
It is middle to be packed into the blocky byproduct agglomerate and fired together with the green-ball ball, to produce the pellet of hardening and the pair of hardening
Product agglomerate.
2. according to the method described in claim 1, wherein the byproduct agglomerate and the green-ball ball are with two stacked layers
Mode be loaded on the charge conveyor of the hardening furnace, upper layer mainly includes the byproduct agglomerate, and, lower layer master
It to include the green-ball ball.
3. according to the method described in claim 2, wherein, implementing the loading of the charge conveyor, institute by separative unit
Separative unit is stated to receive the green-ball ball and byproduct agglomerate and the latter is distributed in the upper and lower.
4. method according to any of the preceding claims, wherein implementing the heat in the hardening furnace in oxidation air
Processing, thus the pellet of hardening obtained and the blocky byproduct agglomerate of hardening, which have, is lower than 50%, preferably shorter than 10%,
More preferably less than 5% metallization.
5. method according to any of the preceding claims, wherein the method includes preparing the step of byproduct agglomerate
Suddenly, the step is included in compaction apparatus using additive and optionally fine powder or other iron-bearing materials are especially thick to handle
The byproduct of particle, to form the blocky byproduct agglomerate.
6. the method according to the claim 5 for being subordinated to claim 3, wherein the byproduct agglomerate is by comprising following
Mixture preparation:
Byproduct including iron and/or steelmaking wastes；And
The fine powder collected from the separative unit.
7. according to the method described in claim 6, wherein the byproduct is from iron-smelter from including in list below
The return material of selection: copper smelter slag, mill scale, waste material fine powder, oxide fine powder, the dust collected in waste line and
Sludge, the fine powder powder from sieve unit, sludge iron content or blast furnace byproduct and their combination containing fluxing agent.
8. according to the method described in claim 7, wherein the return material has 0.045 to 5mm during the packing stage
Particle size in range.
9. method according to any of the preceding claims, wherein the byproduct agglomerate includes to be less than 50wt.%,
Preferably smaller than 30wt.%, the iron ore more preferably less than 20wt.%.
10. method according to any of the preceding claims, wherein the byproduct agglomerate is formed as block or agglomerate,
Its size is greater than 16mm, preferably greater than 20 or 24mm.
11. method according to any of the preceding claims, wherein described the step of preparing green-ball ball includes that preparation is former
To form made of substantially spherical pellet, the raw material includes: particulate iron ore and can the mixture and the processing mixture of material
The additive of energy, especially adhesive.
12. according to the method for claim 11, wherein the possible additive includes tiny byproduct, the tiny pair
The particle of slightly below 352 mesh of the product with 70wt.%.
13. method according to any of the preceding claims, wherein the pellet is by the particulate iron content greater than 61wt.%
Particle, especially iron ore particle composition；And preferably, the pellet has slightly below 325 purposes by least 80wt.%
Particle composition.
14. method according to any of the preceding claims, wherein the pellet has 9-18mm, preferably 9-14mm model
Enclose interior diameter.
15. a kind of balling equipment, comprising:
Pelletizing part (16), for by balling-up drum and/or disc balling machine in processing the mixture containing tiny iron ore come
Production includes the green-ball ball of tiny iron ore；
Hardening furnace (12), for the green-ball ball to be fired into the pellet of hardening；
Feeding device (54) is configured as the green-ball ball being enclosed on the charge conveyor of the hardening furnace；
It is characterized in that, it further includes the agglomeration part (40) for producing blocky byproduct agglomerate and/or crude iron ore, with
And be, the feeding device is additionally configured to for the blocky byproduct agglomerate being packed into together with the green-ball ball described hard
Change in furnace.
16. balling equipment according to claim 15, wherein by the green-ball ball formed in the pelletizing part and in institute
It states the byproduct agglomerate formed in agglomeration part to be discharged on common conveyer (22), the conveyer (22) is by the life
Pellet and byproduct agglomerate are transmitted to the feeding device (54).
17. balling equipment according to claim 16, including the first return path (26) are used for during its transmission in institute
State the undersized and oversized pellet collected on common conveyer.
18. balling equipment described in 5,16 or 17 according to claim 1, wherein the feeding device (54) is configured as with two layers
The mode of (50,52) is packed into the green-ball ball and byproduct agglomerate, wherein the byproduct agglomerate is in top layer.
19. balling equipment described in any one of 5-18 according to claim 1, wherein the feeding device includes one group stacked
Roll screen (541、542)。
20. balling equipment described in any one of 5-19 according to claim 1, including the second return path (58) are used for from institute
It states feeding device (54) and collects undersized material and fine powder, and the latter is transmitted to the agglomeration part.
21. a kind of method of balling equipment of operation for iron-smelting furnace, the balling equipment are included therein loading and fire life
Pellet is to produce the hardening furnace of hard sphere ball, which comprises
Iron ore green-ball ball is prepared using balling-up drum and/or disc balling machine；
The green-ball ball is packed into and fired in hardening furnace；
It is characterized in that, preparing crude iron ore agglomerate by being compacted to form bulk product；And it is in the hardening
It is packed into the blocky byproduct agglomerate in furnace and is fired together with the green-ball ball, to produce the pellet and hardening of hardening
Byproduct agglomerate.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU100075 | 2017-02-10 | ||
| LU100075A LU100075B1 (en) | 2017-02-10 | 2017-02-10 | Method of Operating a Pelletizing Plant |
| PCT/EP2018/053140 WO2018146183A1 (en) | 2017-02-10 | 2018-02-08 | Method of operating a pelletizing plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110300809A true CN110300809A (en) | 2019-10-01 |
Family
ID=58699224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880011119.5A Pending CN110300809A (en) | 2017-02-10 | 2018-02-08 | The method for operating balling equipment |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20200032369A1 (en) |
| EP (1) | EP3580362A1 (en) |
| CN (1) | CN110300809A (en) |
| BR (1) | BR112019016523A2 (en) |
| EA (1) | EA201991841A1 (en) |
| LU (1) | LU100075B1 (en) |
| TW (1) | TW201835341A (en) |
| WO (1) | WO2018146183A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3333951A (en) * | 1965-06-14 | 1967-08-01 | Mcdowell Wellman Eng Co | Metallized pellets |
| US3864119A (en) * | 1973-10-01 | 1975-02-04 | Allis Chalmers | Method and apparatus for simultaneously producing large and small heat hardened agglomerates of mineral ore |
| CN101613800A (en) * | 2009-07-17 | 2009-12-30 | 重庆瑞帆再生资源开发有限公司 | Adopt metallurgical composite pellet, preparation method and application that twice the balling-up mode is made |
| CN101717854A (en) * | 2009-12-25 | 2010-06-02 | 重庆瑞帆再生资源开发有限公司 | Method for producing metallized pellet by using metallurgical roasting furnace |
| US20150128766A1 (en) * | 2013-10-22 | 2015-05-14 | Vale S.A. | Device for the improvement of crude pellets and pelletizing process |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3754890A (en) * | 1971-09-17 | 1973-08-28 | Harsco Corp | Process for producing metallized agglomerates and recovery of non ferrous values from waste materials |
| GB9523229D0 (en) * | 1995-11-14 | 1996-01-17 | Allied Dust Processing Ltd | Method of processing finely divided material incorporating metal based constituents |
-
2017
- 2017-02-10 LU LU100075A patent/LU100075B1/en active IP Right Grant
-
2018
- 2018-02-07 TW TW107104334A patent/TW201835341A/en unknown
- 2018-02-08 WO PCT/EP2018/053140 patent/WO2018146183A1/en unknown
- 2018-02-08 EA EA201991841A patent/EA201991841A1/en unknown
- 2018-02-08 US US16/484,367 patent/US20200032369A1/en not_active Abandoned
- 2018-02-08 CN CN201880011119.5A patent/CN110300809A/en active Pending
- 2018-02-08 BR BR112019016523-1A patent/BR112019016523A2/en not_active Application Discontinuation
- 2018-02-08 EP EP18706216.1A patent/EP3580362A1/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3333951A (en) * | 1965-06-14 | 1967-08-01 | Mcdowell Wellman Eng Co | Metallized pellets |
| US3864119A (en) * | 1973-10-01 | 1975-02-04 | Allis Chalmers | Method and apparatus for simultaneously producing large and small heat hardened agglomerates of mineral ore |
| CN101613800A (en) * | 2009-07-17 | 2009-12-30 | 重庆瑞帆再生资源开发有限公司 | Adopt metallurgical composite pellet, preparation method and application that twice the balling-up mode is made |
| CN101717854A (en) * | 2009-12-25 | 2010-06-02 | 重庆瑞帆再生资源开发有限公司 | Method for producing metallized pellet by using metallurgical roasting furnace |
| US20150128766A1 (en) * | 2013-10-22 | 2015-05-14 | Vale S.A. | Device for the improvement of crude pellets and pelletizing process |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201835341A (en) | 2018-10-01 |
| EP3580362A1 (en) | 2019-12-18 |
| WO2018146183A1 (en) | 2018-08-16 |
| LU100075B1 (en) | 2018-10-02 |
| US20200032369A1 (en) | 2020-01-30 |
| BR112019016523A2 (en) | 2020-03-31 |
| EA201991841A1 (en) | 2020-01-22 |
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