KR101715478B1

KR101715478B1 - Apparatus and method for manufacturing sintered ore

Info

Publication number: KR101715478B1
Application number: KR1020150072917A
Authority: KR
Inventors: 원승연; 박태준
Original assignee: 현대제철 주식회사
Priority date: 2015-05-26
Filing date: 2015-05-26
Publication date: 2017-03-13
Also published as: KR20160138716A

Abstract

The present invention relates to an apparatus and a method for producing sintered ores, and more particularly, to an apparatus and method for producing sintered ores by using an input unit for inputting information on the amount of sintered raw material containing a cyclone dust, And a controller for determining an input amount and performing a sintering process according to the determined amount of the fuel.

Description

[0001] APPARATUS AND METHOD FOR MANUFACTURING SINTERED ORE [0002]

The present invention relates to an apparatus and method for producing sintered ores, and more particularly, to an apparatus and method for producing sintered ores by controlling the amount of fuel injected to produce sintered ores.

Generally, steel manufacturing process is to burn iron coke through burning process to produce pig iron by making steel iron, and to reduce impurities such as carbon contained in pig iron through steelmaking process to produce semi-finished product with high purity, Is finished with a final product such as a wire rod, a coil or a thin plate.

In particular, it is common to produce pig iron by using not only iron ores but also sintered ores produced through a sintering process.

Meanwhile, the background art of the present invention is disclosed in Korean Patent Publication No. 10-2015-0035099 (May 2015.04.06).

An object of the present invention is to provide an apparatus and a method for producing sintered ores that can produce high quality sintered ores by optimizing the amount of fuel input for producing sintered ores.

An apparatus for producing sintered ores according to one aspect of the present invention includes an input unit for receiving information on an input amount of a raw material for sinter including a cyclone dust; And a control unit for determining an input amount of the fuel based on the input amount of the blast cyclone dust inputted through the input unit and performing a sintering process according to the determined amount of the fuel.

In the present invention, the control unit may be configured to select an amount of fuel to be used per fuel when determining the input amount of the fuel, calculate a calorific value according to the selected amount per fuel, And the amount of the spent fuel is determined as the amount of the fuel.

In the present invention, the controller may re-determine the amount of fuel to be used per unit fuel if the calculated unit amount based on the calorific value does not satisfy a predetermined standard.

According to an aspect of the present invention, there is provided a method of manufacturing an sintered ore according to the present invention, the method including the steps of: receiving a cyclone dust input amount of a raw material of a raw material for sinter; Determining a charging amount of the fuel based on an input amount of the blast cyclone dust; And performing the sintering process according to the determined amount of the charged fuel.

In the present invention, the step of determining the input amount of fuel may include: a step of the control unit selecting an amount of fuel used per fuel; Calculating a calorific value according to the selected fuel amount per fuel; And determining, by the control unit, the selected amount of fuel to be used as the input amount of the fuel when the calculated unit amount corresponding to the calorific value satisfies a preset reference.

In the present invention, the step of determining the input amount of the fuel may further include a step of re-determining the amount of fuel used by the control unit when the calculated unit amount based on the calculated calorific power does not satisfy the preset reference.

An apparatus and method for producing sintered ore according to an aspect of the present invention can improve the quality of sintered ores and reduce the amount of fuel used by determining the optimal amount of fuel input based on the amount of blast cyclone dust input.

1 is a block diagram showing a structure of an apparatus for producing sintered ores according to an embodiment of the present invention.
FIG. 2 is a graph showing the result of sintered light production according to a conventional method.
FIG. 3 is a graph showing the results of sintered ores produced by an apparatus for producing sintered ores according to an embodiment of the present invention.
4 is an exemplary view for explaining a method for producing sintered ores according to an embodiment of the present invention.

Hereinafter, an embodiment of an apparatus and method for producing sintered ores according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a block diagram showing the construction of an apparatus for producing sintered ores according to an embodiment of the present invention. FIG. 2 is a graph showing a result of sintered light production according to a conventional method, and FIG. A graph showing the result of sintered light production by an apparatus for producing sintered ores is shown in FIG. 1, and the apparatus for producing sintered ores according to this embodiment will be described as follows.

As shown in FIG. 1, the apparatus for producing sintered ores according to an embodiment of the present invention includes a control unit 100 and an input unit 110.

The input unit 110 may receive information on the amount of the raw material for sinter including the cyclone dust. For example, the input unit 110 may receive information on the amount of the sintered raw material input from the host controller. Here, the raw materials for sintering can be classified into iron ore, which is the main raw material, and quartz, limestone, and quick lime, which are subsidiary raw materials, and such sub-raw materials include the blast furnace cyclone dust.

The control unit 100 determines the amount of fuel to be charged based on the input amount of the blast cyclone dust input through the input unit 110, and can perform the sintering process according to the amount of the determined fuel.

That is, the sintering process refers to a process in which a raw material for sinter and a fuel are injected together and melted to produce an sintered ore. In this case, the fuel to be used is typically coke and anthracite. These sintered fuels act as important factors influencing combustion, maximum temperature, etc. during the sintering process and may directly affect the productivity and quality of sintered ores.

However, blast furnace cyclone dust, which is an additive of raw materials for sintering, may contain a large amount of carbon, which may affect the heat change of the sintering process. Therefore, the control unit 100 can calculate the optimal amount of fuel input by determining the input amount of the fuel in consideration of the input amount of the blast cyclone dust.

More specifically, the control unit 100 can calculate the amount of fuel to be used according to the selected amount of fuel, and determine the amount of fuel to be supplied based on the calculated amount of heat. That is, when the calculated basic unit meets a predetermined standard, the selected fuel amount is determined as the fuel amount, and if the calculated standard amount is not satisfied, the control unit 100 re-determines the fuel amount per fuel and repeats calculation of the calorific value again. The amount of fuel input can be determined. Here, the unit level means the amount of fuel required to produce 1 ton of sinter ore.

At this time, the control unit 100 can select the amount of the coke to be used and the amount of the anthracite coal to be used according to the fuel usage amount, and can determine the amount of the coke to be used according to the predetermined condition. For example, the amount of the partial coke and the anthracite used in the initial selection may be set in advance, and the variation value of the amount used in the re-selecting may be set in advance.

In addition, the control unit 100 can calculate not only the amount of heat generated by the partial coke and the anthracite but also the amount of heat generated by the blast furnace cyclone dust in the calculation of the amount of heat generated. That is, since the blast cyclone dust is also used as a heat source for the sintering process, the controller 100 can calculate the heat change factor by the blast cyclone dust.

As shown in FIGS. 2 and 3, when the amount of fuel is determined by calculating the unit load considering the input amount of the blast furnace cyclone dust, the quality of the raw material and the sintered ores are stabilized compared to the conventional method in which the blast cyclone dust is not considered Can be confirmed. In other words, when the amount of blast cyclone dust is taken into account, the amount of superheated steam is reduced, so the fuel cost can be reduced and the strength of the sintered ores can be maintained at a certain level.

FIG. 4 is a view for explaining a method for manufacturing sintered ores according to an embodiment of the present invention. Referring to FIG. 4, a method for manufacturing sintered ores according to this embodiment will now be described.

As shown in FIG. 4, the control unit 100 receives the input amount of the blast cyclone dust first (S200). For example, the control unit 100 may receive the input amount of the blast cyclone dust from the host controller. The controller 100 may receive not only the input amount of the blast furnace cyclone dust but also the input amount of the entire sintered raw material from the host controller. Here, the raw materials for sintering can be classified into iron ore, which is the main raw material, and quartz, limestone, and quick lime, which are subsidiary raw materials, and such sub-raw materials include the blast furnace cyclone dust.

Then, the control unit 100 selects the usage amount per fuel (S210). At this time, the control unit 100 can select the amount of the coke to be used and the amount of the anthracite coal to be used according to the fuel usage amount, and can determine the amount of the coke to be used according to the predetermined condition. For example, the amount of partial coke and anthracite used for the initial selection may be preset.

After the step S210, the controller 100 calculates a calorific value according to the amount of fuel used per selected fuel (S220). At this time, the control unit 100 can calculate not only the amount of heat generated by the partial coke and the anthracite but also the amount of heat generated by the blast furnace cyclone dust. That is, since the blast cyclone dust is also used as a heat source for the sintering process, the controller 100 can calculate the heat change factor by the blast cyclone dust.

Then, the control unit 100 determines whether the unit level based on the calorific power calculated in the step S220 satisfies a predetermined standard (S230). Here, the unitary value means the amount of fuel required to produce 1 ton of sinter ore, so that the control unit 100 can calculate the unit level based on the amount of iron ore.

If it is determined in step S230 that the standard is met, the controller 100 performs a sintering process according to the amount of fuel used in step S210 (S240).

On the other hand, if it is determined in step S230 that the fuel level does not meet the unit level standard, the control unit 100 re-determines the amount of fuel used per fuel (S250). At this time, the condition for re-selecting the amount of fuel used per fuel may be set in advance. For example, the degree to which the usage amount is changed may be set in advance.

Then, the control unit 100 returns to step S220 and repeats the calculation of the calorific value again. That is, when the calculated basic unit meets a predetermined standard, the selected fuel amount is determined as the fuel amount, and if the calculated standard amount is not satisfied, the control unit 100 re-determines the fuel amount per fuel and repeats calculation of the calorific value again. The amount of fuel input can be determined.

As described above, the apparatus and method for producing sintered ores according to the embodiment of the present invention can improve the quality of the sintered ores and reduce the amount of fuel used by determining the optimal amount of fuel input based on the input amount of the blast furnace cyclone dust .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the technical scope of the present invention should be defined by the following claims.

100:
110: input unit

Claims

An input unit for inputting information on an input amount of the raw material for sinter including the cyclone dust; And
And a control unit for determining an input amount of the fuel based on the input amount of the blast cyclone dust inputted through the input unit and performing the sintering process according to the input amount of the fuel,
Wherein the controller calculates the amount of fuel to be used for each fuel when determining the input amount of the fuel, calculates the amount of heat to be used according to the selected amount of fuel, and, if the calculated unit amount satisfies a preset standard, And an amount of use is determined as an input amount of the fuel.

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The method according to claim 1,
Wherein the control unit reselects the amount of each fuel to be used if the calculated unit amount based on the calorific value does not satisfy a predetermined criterion.

The control unit receiving input of the amount of the cyclone dust as the subsidiary material of the raw material for sinter;
Determining a charging amount of the fuel based on an input amount of the blast cyclone dust; And
And the control unit performing a sintering process according to the determined amount of the fuel,
Wherein the step of determining the amount of fuel to be charged includes:
Selecting the amount of fuel to be used by the control unit;
Calculating a calorific value according to the selected fuel amount per fuel; And
And determining, by the control unit, the amount of fuel to be used as the amount of fuel to be injected if the calculated unit amount based on the calorific value satisfies a predetermined criterion.

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5. The method of claim 4,
Wherein the step of determining the amount of fuel to be charged includes:
Further comprising the step of the control unit re-selecting the amount of fuel used per fuel, if the calculated unit amount corresponding to the calorific value does not satisfy a preset reference.