KR102175837B1 - The assembly for manufacturing sintered ore, sintered ore manufacturing method of using the same, material for manufacturing pig iron, and pig iron manufacturing method of using the same - Google Patents

Abstract

The granulated product for manufacturing sintered ore according to an embodiment of the present invention is charged with iron ore in powder form into a container.
A method for manufacturing a sintered ore according to another embodiment of the present invention includes charging a sintered raw material containing iron ore in powder form into a container to prepare a granulated product for manufacturing a sintered ore, introducing it to a sintering cart, and firing. .
The raw material for the production of molten iron according to another embodiment of the present invention is a semi-gwang loaded container.
In another embodiment of the present invention, a method for manufacturing molten iron is a step of preparing raw materials for manufacturing molten iron by charging semi-gloss into a container. Including the step of introducing the raw material for manufacturing the molten iron into a blast furnace, wherein the semi-gloss is obtained by pulverizing and screening the sintered material discharged from the sintering cart, and has a particle size of 5 mm or less.

Description

(THE ASSEMBLY FOR MANUFACTURING SINTERED ORE, SINTERED ORE MANUFACTURING METHOD OF USING THE SAME, MATERIAL FOR MANUFACTURING PIG IRON, AND PIG IRON MANUFACTURING METHOD OF USING THE SAME}

It relates to a granulated product for manufacturing sintered ore using pulverized iron ore, and a method for manufacturing sintered ore using the same.

It relates to a raw material for manufacturing molten iron using semi-gloss and a method for manufacturing molten iron using the same.

In the conventional sintered ore manufacturing process, iron ore (spectroscopy) having a particle size of about 10 mm or less, an auxiliary raw material for basicity control, and a binder are mixed to prepare a blended raw material, and then a sintered ore is manufactured using a sintering machine. In manufacturing the sintered ore, in order to improve the sintering productivity while manufacturing the high-quality sintered ore, it is important to secure air permeability in the sintering reaction process. To this end, by using a drum type mixer, the powdered iron ore, the subsidiary material, and the binder are mixed and pseudo-particles, and a compounded raw material having a certain size or more is manufactured and charged into a sintering machine. However, if a large amount of iron ore with a fine particle size is used, or if the content of iron ore having a particle size that is not suitable for manufacturing the pseudo particle is high, the strength of the manufactured pseudo particle is weakened. As a result, a problem of lowering the air permeability occurs.

In addition, in the process of manufacturing the sintered ore and before the sintered ore is put into the blast furnace, semi-glow, which is a finely divided sintered ore, which is difficult to use by putting it into the blast furnace, occurs. In order to use this semigloss, in the conventional case, it was reused as a sintered blending material, and in this case, there is a problem that additional heat is consumed to sinter again.

To provide a granulated product for manufacturing sintered ore using pulverized iron ore, and a method for manufacturing sintered ore using the same.

It is intended to provide a raw material for manufacturing molten iron using semi-gloss and a method for manufacturing molten iron using the same.

The granulated product for manufacturing sintered ore according to an embodiment of the present invention is charged with iron ore in powder form into a container.

The iron ore in the powder form may have a particle size of 1 mm or less.

The iron ore in the powder form may have a particle size of 0.1 to 1 mm.

The container may include a plurality of holes through which gas can enter.

The hole may have a diameter of 1 mm or less (except 0 mm).

The container may be made of a material containing any one selected from the group consisting of iron, aluminum, and mixtures thereof.

The container is further charged with an auxiliary material and a binder, and includes 60 to 70 parts by weight of iron ore in a powder form, 8 to 10 parts by weight of an auxiliary material, and 3 to 4 parts by weight of a binder based on 100 parts by weight of the charged material loaded in the container. I can.

A method for manufacturing a sintered ore according to another embodiment of the present invention includes a step of preparing a granulated product for manufacturing a sintered ore by charging a sintered raw material including iron ore in a powder form into a container, introducing it into a sintering cart, and firing do.

The step of putting into the sintering cart may include putting the granulated product for manufacturing the sintered ore under the sintering cart, and introducing the granulated material of the sintered material to the upper part.

The iron ore in the powder form may have a particle size of 1 mm or less.

In the step of preparing a granulated product for manufacturing a sintered ore by charging the raw material for sintering including iron ore in the form of powder into a container, the raw material for sintering may include iron ore in powder form, an auxiliary material, and a binder.

After the sintering step, the step of introducing the sintered body of the granulated material for sintering ore production, which has been sintered in the sintering step, into the blast furnace may be further included.

Prior to the step of preparing a granulated product for manufacturing sintered ore by charging the iron ore in the powder form into a container, screening the iron ore and classifying it by particle size. It may further include the step of producing granulated sintered raw material granulated ore.

The container may include a plurality of holes through which gas is allowed to enter.

The hole may have a diameter of 1 mm or less (except 0 mm).

The container may be made of a material containing any one selected from the group consisting of iron, aluminum, and mixtures thereof.

The raw material for manufacturing molten iron according to another embodiment of the present invention is to be charged in a container with semi-gloss.

The container may include a plurality of holes through which gas is allowed to enter.

The hole may have a diameter of 5 mm or less (except 0 mm).

The container may be made of a material containing any one selected from the group consisting of iron, aluminum, and mixtures thereof.

A method for manufacturing molten iron according to another embodiment of the present invention includes the step of preparing a raw material for manufacturing molten iron by charging semigwang into a container, introducing the raw material for manufacturing the molten iron into a blast furnace, and the semi-gloss is discharged from a sintering cart. The sintered product was pulverized and screened to obtain separation, and a particle size of 5 mm or less.

The container may include a plurality of holes through which gas is allowed to enter.

The hole may have a diameter of 5 mm or less (except 0 mm).

The container may be made of a material containing any one selected from the group consisting of iron, aluminum, and mixtures thereof.

According to an embodiment of the present invention, by providing a granulated product for manufacturing a sintered ore in which iron ore in powder form is charged into a container, and charging it in a sintering cart and firing it, by providing a method for producing a sintered ore, securing air permeability in the firing process, It is possible to improve the production efficiency of the sintered ore.

In addition, according to another embodiment of the present invention, by providing a raw material for manufacturing molten iron in which semi-gwang is loaded into a container, and by directly injecting it into a blast furnace to prepare a molten iron, air permeability in the blast furnace is secured, and the semi-gloss is lumped. It can reduce the amount of additional heat and cost required for conversion.

1 shows the optimum moisture content and differential pressure characteristics when manufacturing pseudo particles according to the iron ore particle size in powder form.
2 is a schematic diagram showing a process of manufacturing a sintered ore according to an embodiment of the present invention.
3 shows an exemplary form of a container that can be applied to an embodiment of the present invention.
4 is a view showing a sintered ore manufacturing granulated product and a sintered raw material granulated ore charged into the sintering cart according to an embodiment of the present invention.
5 is a graph showing the drop strength characteristics of pseudo-particles according to the ratio of nuclear particles to attached particles.
6 is a schematic diagram showing a process of manufacturing a molten iron according to an embodiment of the present invention.

In the present specification, when a part "includes" a certain component, it means that other components may be further included rather than excluding other components unless otherwise stated.

In this specification, the terminology used is only for referring to specific embodiments, and is not intended to limit the invention. Singular forms as used herein also include plural forms unless the phrases clearly indicate the opposite. The meaning of “comprising” as used in the specification specifies a specific characteristic, region, integer, step, action, element and/or component, and the presence of another characteristic, region, integer, step, action, element and/or component, or It does not exclude additions.

In the present specification, the term "combination of these" included in the expression of the Makushi format refers to one or more mixtures or combinations selected from the group consisting of components described in the expression of the Makushi format, and the components It means to include one or more selected from the group consisting of.

In this specification, iron ore in powder form means iron ore having a particle size of 10 mm or less, and iron ore in powder form is classified into powdered iron ore, pulverized iron ore, and ultra-fine iron ore. Powdered iron ore has a particle size of more than 1mm and less than 10mm, pulverized iron ore has a particle size of 0.1mm to 1mm, and ultrafine iron ore has a particle size of less than 0.1mm.

In this specification, semi-gloss refers to a powdered ore having a particle size of 5 mm or less generated from the point when the sintered ore is discharged from the sintering cart and before it is put into the blast furnace. This includes the resulting sintered ore (self-reflecting) with a particle size of 5 mm or less.

The existing sintered ore manufacturing process is as follows. The main raw material used to manufacture sintered ore is iron ore, and iron ore is generally classified into agglomerate (8-10mm or more) and spectral (8-10mm or less) based on a particle size of 8-10mm. In the case of lump ore, fine iron ore particles are attached to the surface of an ore with a large particle size, and a screening process is performed to remove it, and the ore generated at this time is called a mining mine (8 to 10 mm or less). The lump ore is used directly in the blast furnace, and the spectral ore is used for the manufacture of sintered ore. The particle size of the ore used for manufacturing the sintered ore is composed of a variety of particle sizes from ultrafine to granulated, and when it is used on a sinterer bogie without a separate pretreatment process, there is a problem that the air permeability in the sintered bed is deteriorated. To this end, pseudo-particles are produced through mixing and assembling processes in order to compact the sintering raw material to a certain size or more, and at this time, auxiliary raw materials (CaO, SiO _2, etc.) for controlling the basicity of the sintered ore and a binder (anthracite coal , Or bun coke) are mixed and assembled at the same time. However, in the prior art, when the fine powder content of iron ore is high, the assembly is incomplete due to the performance limitations of the mixing and assembly facilities, and the ventilation in the sintering bed may be deteriorated. In addition, pseudo-particle formation of ore is achieved by attaching and growing attached particles (0.25 to 0.1 mm or less) around nuclear particles (usually 1 mm or more) in a rotating type mixing and granulating machine. 1 is a diagram showing the optimum moisture content and the differential pressure (breathability) in a sintered bed when preparing pseudo-particles according to particle size (Reference: ISIJ. Vol. 47, No. 7, pp.965-972). As shown in Fig. 1, in the case of ore having a specific particle size (i.e., a particle size between 0.1 and 1 mm), the moisture content required for assembly is increased, and the differential pressure of the sintered bed is greatly increased (deteriorated ventilation) have.

This is because particles between 0.1 and 1 mm are nuclear particles or attached particles, which do not affect the granulation, but have intermediate properties. If the content of iron ore having a medium particle size is high, it means that the breathability of the sintered bed may be deteriorated. The use of ultra-fine spectroscopy in the existing sintering process is generally used as pseudo-particles, or is used after compacting through a separate facility and mixing with the blending raw materials. This is called selective assembly, and micro-fine ore is spheroidized (pellet) using a disk-type assembly facility. The state before sintering of the pellets is called a green ball, and since this green ball is simply spherical and manufactured in the form of a mass, there is a problem that the strength is very weak, and differentiation occurs during the transfer, charging and mixing process, and the sintering bed It is the cause of lowering the breathability. As a method to overcome this, although it is intended to improve the strength of the green ball by using various types of binders, there is a problem in that the manufacturing cost of sintered ore increases due to the use of the binder and adhesion problems due to the binder component occur.

Next, the prepared blended material is charged into the sintering cart, and the heat generated by the ignition furnace or the ignition burner is supplied into the sintering machine, and at the same time as ignition, external air is sintered through a blower located under the sintering machine cart. Air is forcibly sucked into the inside (bottom) of the aircraft, and accordingly, combustion (ignition) of the binder mixed with the blended material occurs. After combustion of the sintered surface layer, heat generated from the top of the sintered layer is moved to the bottom due to the continuous inflow of external air, and a combustion reaction of the binder charged in the bottom of the sintering machine occurs. A sintering reaction occurs gradually in a downward direction to produce a sintered ore. However, in the case of the surface layer portion and the sidewall portion of the sintered bed, a lack of heat occurs, thereby forming unfired sintered ore (self-reflection). In addition, such unfired sintered ore (self-semi-glow) has a particle size of 5 mm or less, and when it is charged into a blast furnace, it is a cause of deteriorating the air permeability in the blast furnace. In order to prevent this, in the case of the existing process, the self-reflecting is recycled as a sintering blending material, but since an additional heat source (binder) is consumed to compact the self-reflecting again, the efficiency of the sintering reaction is lowered. .

The present invention is to solve the above problems, and an embodiment of the present invention proposes a method for charging iron ore in powder form into a sintering machine in a pretreatment process of a raw material.

According to one embodiment of the present invention, it is possible to provide a method of charging and using iron ore having a very small particle size and iron ore having a particle size that is not suitable for manufacturing pseudo-particles in a sintering machine.

Specifically, according to one embodiment of the present invention, by providing a sintered ore manufacturing method for providing a sintered ore manufacturing method in which an iron ore in a powder form is charged into a container, and charged to a sintering cart and fired, air permeability in the firing process is provided. To secure, and improve the sintered ore production efficiency.

In another embodiment of the present invention, a method for directly using the semi-gloss in a blast furnace without undergoing a process of sintering again is presented.

Specifically, according to an embodiment of the present invention, by providing a raw material for manufacturing molten iron in which semi-gwang is charged into a container, and directly injecting it into a blast furnace to prepare a molten iron, by providing a method of manufacturing molten iron, to secure air permeability in the blast furnace and block the semi-gloss It can reduce the amount of additional heat and cost required for conversion.

Assembly for manufacturing sintered ore

The granulated product for manufacturing sintered ore according to an embodiment of the present invention is charged with iron ore in powder form into a container. In the case of iron ore in powder form, if it is used by putting it directly into the sintering machine, sufficient sintering cannot be achieved due to the deterioration of the air permeability of the sintering bed, and sufficient strength cannot be secured.The drum is made by mixing conventional powdered iron ore with a binder and a binder. It was carried out by a method of forming and sintering a granulated ore of a pseudo-particle sintered raw material using a mixer or the like. However, in order to secure the intensity of the sintered raw material granulated light, it is common to use a powder having a particle size in a specific range. In the case of the granulated product for manufacturing a sintered ore according to an embodiment of the present invention, there is an advantage of using iron ore in powder form of various particle sizes.

The powdered iron ore may have a particle size of 1 mm or less, and more specifically, 0.1 to 1 mm, 0.25 to 1 mm, 0.25 to 0.5 mm, or 0.1 to 0.25 mm. Referring to FIG. 1, in the case of finely divided iron ore or extremely finely divided iron ore having the above range, it was difficult to use it for manufacturing coarse ore because it increases the moisture content required for assembly and deteriorates the air permeability of the sintered bed. However, the granulated product for manufacturing a sintered ore according to an embodiment of the present invention may provide a granulated product for manufacturing a sintered ore having sufficient strength even when using the finely divided iron ore or the ultrafine iron ore having the particle size, and the productivity of the sintered ore may be improved. .

The container may include a plurality of holes through which gas is allowed to enter. This enables the discharge of gaseous components generated in the sintering process of the iron ore, thereby preventing deformation and breakage of the container. When a binder is included in the material charged in the container, a certain amount of air must be introduced in order to induce a smooth combustion reaction, so this is to secure the in/out of air or gas components.

The hole may have a diameter of 1 mm or less. Specifically, it may be 1 to 0.01mm, 1 to 0.05mm, 1 to 0.1mm, 1 to 0.25mm, 1 to 0.3mm, 1 to 0.5mm, or 1 to 0.8mm. This takes into account the particle size of the charged material, and when the above range is satisfied, the loss of the internal charged material is prevented, while sufficient gas in/out is secured, thereby inducing a smooth firing reaction in the firing step, and deformation and damage of the container. Can be prevented.

The container is suitable for loading into the sintering machine, and preferably has a shape and size capable of ensuring sufficient ventilation in the sintering cart. For example, a container having a space in which raw materials can be charged and an open top may be used, and the container may have a cylindrical shape, but is not limited thereto. As the container, a general can collected for recycling purposes may be used, and a can of a size generally used and having a horizontal diameter of 50 mm or less may be used. In this case, there is an advantage in that it does not require the manufacture of a separate container, and waste resources can be recycled. When the granulated product for manufacturing sintered ore manufactured by using a container of the same size is charged to a sintering cart, it is advantageous to secure air permeability and improve sinterability. The container may be made of a material including any one selected from the group consisting of iron, aluminum, and mixtures thereof. The container can be directly put into the blast furnace together with the charge, and when considering the components of the molten iron, when a container made of iron is used, impurities in the produced molten iron can be reduced and the durability of the container can be secured. The container may further contain an auxiliary material and a binder. Semi-gloss may be further charged in the container. The auxiliary material and the binder may be uniformly mixed with iron ore in powder form, and moisture may be added. In this case, it is possible to improve the sinterability of the granulated product for producing sintered ore in the subsequent sintering process, and to manufacture the sintered ore with improved quality. Charges charged to the container may contain moisture. Specifically, the moisture content of the charged material may be 7.5 to 8% by mass. When the above range is satisfied, a binding force is imparted to the charged material, thereby preventing loss of the charged material from the container, and inducing a hydration reaction of CaO in the auxiliary material.

It may include 60 to 70 parts by weight of iron ore in powder form, 8 to 10 parts by weight of auxiliary materials, and 3 to 4 parts by weight of a binder based on 100 parts by weight of the charge charged in the container. In this case, the sintering property can be improved in the subsequent sintering process, and a sintered ore with improved quality can be manufactured. However, it is not limited thereto, and the content of each material may be adjusted according to the quality and purpose of the raw material.

15 to 25 parts by weight of semi-gloss may be included based on 100 parts by weight of the charge charged in the container.

Charges charged to the container may contain moisture. Specifically, the moisture content of the charged material may be 7.5 to 8% by mass. When the above range is satisfied, a binding force is imparted to the charged material, thereby preventing loss of the charged material from the container, and inducing a hydration reaction of CaO in the auxiliary material.

Hereinafter, a method of manufacturing a sintered ore using the granulated product for manufacturing a sintered ore according to an embodiment of the present invention will be described. Description of the contents overlapping with those described in the sintered ore manufacturing assembly will be omitted.

Sintered ore manufacturing method

A method for manufacturing a sintered ore according to another embodiment of the present invention includes a step of preparing a granulated product for manufacturing a sintered ore by charging a sintered raw material including iron ore in a powder form into a container, introducing it into a sintering cart, and firing do. In this case, even if iron ore in powder form is used, air permeability in the sintering process can be secured and sintered ore manufacturing efficiency can be improved.

The step of putting into the sintering cart may include putting the granulated product for manufacturing the sintered ore under the sintering cart, and introducing the granulated material of the sintered material to the upper part. 4 is a cross-sectional view of a sintered bogie in which a granulated product for manufacturing a sintered ore and a sintered raw material granulated ore are injected. When the granulated product for manufacturing a sintered ore is disposed under the sintering cart, air permeability is maximized, and the sintering reaction of the sample loaded in the container can be sufficiently generated by using the excess amount of heat under the sintering bed. The sintered raw material granulated ore may be assembled by mixing iron ore, a binder, and an auxiliary raw material by a general method.

When the granulated product for manufacturing sintered ore manufactured by using a container of the same size is charged to a sintering cart, it is advantageous to secure air permeability and improve sinterability.

The iron ore in powder form may have a particle size of 1 mm or less. Specifically, it may be 0.1 to 1mm, 0.25 to 1mm, 0.25 to 0.5mm, or 0.1 to 0.25mm. There is an advantage in that it is possible to utilize iron ore of a grain size that is difficult to apply to the manufacture of granulated ore as a raw material for sinter.

In the step of preparing a granulated product for manufacturing a sintered ore by charging the raw material for sintering including iron ore in the form of powder into a container, the raw material for sintering may include iron ore in powder form, an auxiliary material, and a binder. Specifically, in the step of preparing a granulated product for manufacturing sintered ore by charging the raw material for sintering including iron ore in the powder form into a container, 60 to 70 parts by weight of iron ore in powder form based on 100 parts by weight of the charge charged in the container, 8 to 10 parts by weight of an auxiliary material and 3 to 4 parts by weight of a binder may be added and uniformly mixed sintered raw materials may be charged.

The auxiliary material is for controlling the basicity of the sintered ore, and CaO or SiO _2, etc. may be used, and the binder may be used as a heat source for manufacturing the sintered ore, anthracite, or powdered coke, but is not limited thereto.

Prior to the step of preparing a granulated product for manufacturing sintered ore by charging the iron ore in the powder form into a container, screening the iron ore and classifying it by particle size. It may further comprise the step of producing granulated sintered raw material granulated ore. In this case, iron ore having a particle size range of 10 mm or less can be used for manufacturing sintered ore, and there is an advantage of improving the productivity of the sintered ore.

The container may include a plurality of holes through which gas is allowed to enter.

The hole may have a diameter of 5 mm or less.

The container may be made of a material including any one selected from the group consisting of aluminum, iron, and mixtures thereof.

Hereinafter, embodiments of the present invention will be described in detail. However, this is presented as an example, and the present invention is not limited thereby, and the present invention is only defined by the scope of the claims to be described later.

2 is a schematic diagram of a sintered ore manufacturing process according to an embodiment of the present invention. Iron ore (1) is subjected to screen 1 (2) and screen 2 (3) processes to classify according to particle size. Screen 1(2) can be classified based on a 1mm particle size, and in some cases, it can be composed of two or more. Iron ore with a particle size larger than 1mm is stored in the raw material storage hopper 1 (4). Iron ore (less than 1mm) that has passed through Screen 1 (2) is divided into secondary particle size through Screen 2 (3), and Screen 2 (3) can be classified based on a particle size of 0.1 to 0.25 mm, and the corresponding particle size separation standard Can be changed as needed. Among the particles separated by screen 2(3), those larger than the separation standard are stored in the raw material storage hopper 3(6), and those smaller than the separation standard are transferred and stored to the raw material storage hopper 2(5). However, in some cases, the sample passing through the screen 1 (2) may be partially or entirely stored in the raw material storage hopper 3 (6), and the reason is as follows.

5, it can be seen that in the case of the drop strength characteristics according to the ratio of the nuclear particles and the attached particles during the manufacture of the pseudo particle, the drop strength varies according to the ratio. That is, when the proportion of the adhered particles is too large or too small, the strength tends to decrease rather, and it can be seen that an appropriate ratio exists to secure the maximum strength. Accordingly, the finely divided iron ore that has passed through the screen 2 (3) is transferred to the raw material storage hopper 2 (5), but if the content is large, it can be transferred to the raw material storage hopper 3 (6). The iron ore stored in the raw material storage hoppers 1 (4) and 2 (5) is mixed and pseudo-granulated in the raw material mixer (7) together with auxiliary raw materials (CaO, etc.) and binders (dust coke, anthracite, etc.) Is formed. The sample stored in the raw material storage hopper 3 (6) is transferred to the raw material loading facility 1 (8) so that it can be loaded into the container, and the sample loaded into the container may be composed of auxiliary raw materials and binders, in addition to iron ore in powder form. , A homogeneously mixed sample may be charged. In this case, a material containing iron or aluminum may be used as the container material, and when considering the durability and impurity components when charging into the blast furnace, it is appropriate to use a container made of iron. In addition, the sintered raw material granulated ore manufactured in the raw material mixer 7 is charged into the sintering machine 9 together with the sintered ore manufacturing granulated material and fired to produce a sintered ore. At this time, the granulated product for manufacturing the sintered ore may be uniformly charged over the entire sintered layer, but may be charged under the sintering cart as shown in FIG. 4. The sintered sintered sintered body for producing a sintered ore is discharged from the sintering machine while being charged in a container, and can be directly put into the blast furnace together with the container. Since the sintered sintered sintered body for manufacturing the sintered ore is loaded into the container, it is possible to manufacture a sintered body having sufficient strength even if using a powdered iron ore having a particle size range in which granularity is inferior, and transfer after completion of sintering and put into the blast furnace There is an advantage of reducing the amount of semi-light generated in the process.

Hereinafter, a raw material for manufacturing molten iron and a method for manufacturing molten iron using the same according to another embodiment of the present invention will be described. Description of the content overlapping with those described in the above-described granulated product for manufacturing sintered ore and the method of manufacturing sintered ore using the same will be omitted.

Raw material for manufacturing chartered iron

The raw material for the production of molten iron according to another embodiment of the present invention is charged in a container with semi-gloss.

In the case of the conventional process, semi-gloss is recycled as a sintered blending material, but additional binders are consumed in order to compact the semi-gloss again. Therefore, it causes a problem that the efficiency of the sintering reaction is lowered. However, in the case of an embodiment of the present invention, by providing a method of manufacturing molten iron by directly inputting into the blast furnace without going through the process of firing the semi-glow again, additional calories required for securing the ventilation in the blast furnace, and massing the semi-gloss and You can save money.

The container may include a plurality of holes through which gas is allowed to enter. 3 shows an exemplary shape of a container. By using the container having the hole, it is possible to induce a smooth reaction by introducing external air into the container in the reactor and discharging the gas generated inside the container.

The hole may have a diameter of 5 mm or less. Specifically, it may be 0.5 to 5mm, 1 to 5mm, 3 to 5mm, or 0.5 to 3mm. This is in consideration of the particle size of the semi-glossy, and if the above range is satisfied, loss of the internal charged material is prevented, and at the same time, sufficient gas in/out to the container can be secured to induce a smooth reaction.

The container may be a material containing any one selected from the group consisting of aluminum, iron, and mixtures thereof, and the container is directly put into the blast furnace together with the loaded semi-gloss, so when considering the composition of the hot metal, iron material When a container composed of is used, impurities in the produced molten iron can be reduced, and durability of the container can be ensured.

6 is a schematic diagram illustrating a process of manufacturing a molten iron using semi-gloss, according to an embodiment of the present invention. The sintered ore produced in the sintering machine 9 is discharged in the form of a lump, and undergoes a screen 3 (10) and a crushing process (11) for efficiency and equipment supplementation in the post process, which is again performed by the screen 4 (12) process. It is separated into a size suitable for charging the blast furnace. Through the screening process, sintered ore with a particle size of more than 5 mm is transferred to the raw material storage hopper 4 (13), and then charged into the blast furnace (14), and sintered ore (semi-gloss) with a particle size of 5 mm or less is transferred to the raw material charging facility 2 (15). It is loaded into a container and manufactured as a raw material for making molten iron. Then, it is charged into the blast furnace together with the sintered ore having a particle size of 5 mm or more.

The present invention is not limited to the above embodiments, but may be manufactured in a variety of different forms, and a person of ordinary skill in the art to which the present invention pertains to other specific forms without changing the technical spirit or essential features of the present invention. It will be appreciated that it can be implemented with. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting.

1: Iron ore 2: Screen 1 3: Screen 2 4: Raw material storage hopper 1
5: Raw material storage hopper 2 6: Raw material storage hopper 3 7: Raw material mixer
8: Raw material charging facility 1 9: Sintering machine 10: Screen 3 11: Crusher
12: screen 4 13: raw material storage hopper 4 14: blast furnace
15: raw material charging facility 2 16: container 17: hole

Claims (24)

Iron ore in powder form is charged into a container,
The container is further charged with an auxiliary material and a binder,
The container includes a plurality of holes through which gas is allowed to enter,
Assembly for manufacturing sintered ore.
The method of claim 1,
The iron ore in powder form has a particle size of 1 mm or less,
Assembly for manufacturing sintered ore.
The method of claim 1,
The powdered iron ore has a particle size of 0.1 to 1 mm,
Assembly for manufacturing sintered ore.
delete The method of claim 1,
The hole is less than 1mm in diameter (except 0mm),
Assembly for manufacturing sintered ore.
The method of claim 1,
The container is a material containing any one selected from the group consisting of iron, aluminum, and mixtures thereof,
Assembly for manufacturing sintered ore.
The method of claim 1,
It includes 60 to 70 parts by weight of iron ore in powder form, 8 to 10 parts by weight of auxiliary materials, 3 to 4 parts by weight of a binder based on 100 parts by weight of the charge charged in the container,
Assembly for manufacturing sintered ore.
Charging a sintered raw material containing iron ore in powder form into a container to prepare a granulated product for manufacturing a sintered ore;
Putting in the sintering cart; And
Including; firing;
In the step of preparing the granulated product for manufacturing the sintered ore, the raw material for sintering includes iron ore in powder form, an auxiliary material, and a binder,
The container includes a plurality of holes through which gas is allowed to enter,
Sintered ore manufacturing method.
The method of claim 8,
The step of putting into the sintering cart,
Injecting the sintered ore manufacturing assembly under the sintering cart; And
Containing;
Sintered ore manufacturing method.
The method of claim 8,
The iron ore in powder form has a particle size of 1 mm or less,
Sintered ore manufacturing method.
delete The method of claim 8,
After the firing step,
Injecting the sintered sintered granulated body for sintering ore production, which has been fired in the firing step, into a blast furnace; further comprising,
Sintered ore manufacturing method.
The method of claim 8,
Prior to the step of preparing a granulated product for manufacturing a sintered ore by charging the iron ore in the powder form into a container,
Screening the iron ore and classifying it by particle size;
The step of producing a sintered raw material granulated ore by pseudo-particleing powdered iron ore having a particle size of more than 1mm and less than 10mm and an ultrafine iron ore having a particle size of less than 0.1mm; further comprising,
Sintered ore manufacturing method.
delete The method of claim 8,
The hole is less than 1mm in diameter (except 0mm),
Sintered ore manufacturing method.
The method of claim 8,
The container is a material containing any one selected from the group consisting of iron, aluminum, and mixtures thereof,
Sintered ore manufacturing method.
delete delete delete delete delete delete delete delete

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