KR101842172B1 - Apparatus for injecting of ferro- alloy and the method for injecting of ferro-alloy - Google Patents

Abstract

According to the present invention, provided an apparatus for injecting a ferroalloy, which comprises: a first hopper unit of which a plurality of hoppers individually store different materials therein; a second hopper unit connected to the first hopper unit; a controller connected to the first hopper unit to control to supply a first material stored in one of the hoppers of the first hopper unit to the second hopper unit; and a basis weight unit measuring a basis weight value of the first materials supplied to the second hopper unit. When the basis weight value of the first material measured from the basis weight unit fails to reach a preset target basis weight value until predetermined time, the controller controls the first hopper unit to enable second materials, stored in the other hoppers except for the hopper which stores the first material among the hoppers of the first hopper unit, to be supplied to the second hopper unit, thereby allowing the measured basis weight value to reach the target basis weight value.

Description

FIELD OF THE INVENTION [0001] The present invention relates to an apparatus for injecting ferroalloys and an apparatus for injecting ferroalloys,

Embodiments relate to an iron-iron-making apparatus and an iron-alloy-feeding method.

The steelmaking process consists of iron pre-refining, converter refining, secondary refining and continuous casting processes. The double refineries refuse carbon, silicon, manganese, phosphorus, etc. which are impurities in the molten iron by oxidizing reaction while charging the main raw materials such as iron and scrap iron into the converter and spraying pure oxygen through the lance.

The molten steel for which the refining of the converter has been completed is launched into the ladle.

During the conversion process, alloy iron is injected into the range of the composition of the steel species to produce the desired molten steel. The input of the ferroalloy is input into the converter during the converter refinement process, or is input to the ladle during the ladle of molten steel. The process of inputting ferroalloys in such a converter operation is described in Korean Patent Laid-Open No. 10-2016-07229 (published Jun. 23, 2016, hereafter).

According to this document, a weighing process is carried out to calculate the kind and amount of alloy iron according to the type of steel. The weighing process is carried out in an iron alloy feeder. The ferrous alloy feeder includes interconnected hearth hoppers, a weigh hopper and a feed hopper. The hearth hopper is disposed on the uppermost side, and the basis hopper is disposed below the hearth hopper. The hopper is placed below the weigh hopper. The raw materials contained in the hearth hopper go down to the hopper through the weigh hopper.

The hearth hopper consists of several hoppers. Each of the hoppers accommodates different kinds of raw materials. The weighing hopper calculates the basis weight of the raw material supplied from the hearth hopper. When the basal weight is completed, the raw materials are fed to the feed hopper and then to the electric wire or the ladle.

On the other hand, if the raw material is empty in the hearth hopper, the path from the hearth hopper to the weighing hopper is obstructed, and the raw material in the weighing hopper is insufficient, the operator stops the iron- There is a problem to proceed. If the worker manually proceeds the basis weight, the content of the ferroalloy is inaccurate, which adversely affects the quality of the product and delays the process.

Korean Patent Publication No. 10-2016-07229 (published Jun. 23, 2016)

In order to solve the above-described problems, an embodiment of the present invention is directed to an iron-alloy feeder and an iron-alloy-feeding method capable of automatically satisfying a target basis weight of a raw material even if an error occurs in the feed of the raw material, And to provide a solution to solve the problem.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned here can be understood by those skilled in the art from the following description.

An embodiment of the present invention is characterized in that it comprises a first hopper part in which a different raw material for each of a plurality of hoppers is received, a second hopper part connected to the first hopper part, and a plurality of second hopper parts connected to the first hopper part, A control unit for controlling the first hopper unit to supply the first raw material contained in any one of the hoppers to the second hopper unit and a basis weight unit for measuring a basis weight of the first raw material supplied to the second hopper unit, Of the plurality of hoppers of the first hopper unit so that the measured basis weight value reaches the target basis weight value when the measured basis weight value of the first raw material measured by the baser unit does not reach the preset target basis weight value And controls the first hopper unit to replenish the second raw material contained in the other hopper except for the hopper in which the first raw material is accommodated to the second hopper unit.

Preferably, the reference time may be a predetermined time at which the basis weight of the first raw material is completed.

Preferably, the control unit determines whether the measured basis weight value of the first raw material measured by the basis weight unit on the basis of the reference time reaches a set target basis weight value, A selection section for selecting at least one second raw material containing the same element and a selection section for selecting the second raw material selected to reach the content of the element of the first raw material corresponding to the target basis weight value, And a compensating unit for calculating a compensating basis value of the first compensating unit.

Preferably, the apparatus further comprises a third hopper portion connected to the second hopper portion, and the control portion controls the second hopper portion to supply the first raw material or the second raw material accommodated in the second hopper portion to the third hopper portion, The hopper section can be controlled.

Preferably, when the measured basis weight value of the first raw material measured by the basis weight unit does not reach the set target basis weight value, the control unit may cause the first raw material accommodated in the second hopper unit to flow into the third hopper unit To control the second hopper unit to empty the second hopper unit.

In another embodiment, there is provided a method of manufacturing a honeycomb structured body including a first hopper portion in which a different raw material for each of a plurality of hoppers is accommodated, a second hopper portion connected to the first hopper portion, and a third hopper portion connected to the second hopper portion A method of feeding an iron alloy for an iron feeder, comprising the steps of: a) measuring a basis weight of a first feedstock supplied from the first hopper to the second hopper, and b) measuring a measured basis weight of the first feedstock Determining whether the measured basis weight value of the first raw material reaches the target basis weight value; and c) if the measured basis weight value of the first raw material does not reach the set target basis weight value, And replenishing the second hopper part with a second raw material accommodated in another hopper except for the hopper in which the first raw material is contained among the plurality of hoppers in the hopper part.

Preferably, the step b) may include determining whether the measured basis weight value of the first raw material measured up to the reference time reaches a set target basis weight value.

Preferably, when the measured basis weight value of the first raw material measured after the step b) does not reach the set target basis weight value, the first raw material accommodated in the second hopper unit is supplied to the third hopper unit And emptying the second hopper part.

Preferably, the step c) includes the steps of: selecting at least one second raw material including the same element as the element contained in the first raw material; and selecting at least one second raw material containing the same element as that contained in the first raw material, And calculating a compensation basis value of the selected second raw material so as to reach a coking amount of the corresponding element of the first raw material.

According to the embodiment, when the basis weight of the raw material is insufficient, the raw materials in the other hearth hoppers are used as substitute raw materials, and the target basis weight of the raw materials is adjusted, so that even if the feed of the raw materials is mistaken in the basis hopper, Thereby providing an advantageous effect of proceeding to the process of inputting the steel-making iron.

FIG. 1 is a view showing an apparatus for feeding an iron alloy according to an embodiment,
2 is a table showing the contents of the elements of the steel species,
3 is a block diagram showing the configuration of the control unit,
4 is a block diagram illustrating an alloy steel weighing method according to an embodiment,
FIG. 5 is a flow chart of the alloy steel weighing method shown in FIG. 4,
6 is a view showing a weighing process for the first raw material,
7 is a view showing the process of emptying the second hopper part for the basis weight of the second raw material,
8 is a view showing a weighing process for the second raw material,
9 is a view showing a process of completing the basis weight and supplying the second raw material to the third hopper.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages, and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. The terms and words used in the present specification and claims should not be construed to be limited to ordinary or dictionary terms and the inventor should properly define the concept of the term in order to describe its own invention in the best way. The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

The terms including ordinal, such as second, first, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be referred to as a first component, and similarly, the first component may also be referred to as a second component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

1 is a view showing an apparatus for feeding iron-based iron according to an embodiment.

Referring to FIG. 1, the apparatus for feeding iron-containing iron according to the embodiment includes a first hopper unit 100, a second hopper unit 200, a third hopper unit 300, a control unit 400, (500).

The first hopper unit 100 is a hearth hopper. The first hopper unit 100 includes a plurality of hoppers. A raw material (ferroalloy) is accommodated in the hopper of the first hopper section 100. The received raw material is supplied to the second hopper unit 200 through the first feeder 110. The first feeder 110 may be disposed for each of the plurality of hoppers of the first hopper unit 100.

A plurality of hoppers of the first hopper unit 100 may respectively receive different raw materials. For example, the raw materials accommodated in each hopper of the first hopper section 100 may be selected from the group consisting of Fe-Si, high carbon ferromanganese (Fe-Mn), heavy carbon ferromanganese (Fe-Mn) Si-Mn), metal manganese, and the like. These raw materials may contain elements such as manganese (Mn), silicon (Si), and carbon (C) at specific ratios. For example, in the case of silical manganese, manganese (Mn) may include 70% to 65%, silicon (Si) may be 14% to 20%, and carbon (C) may be 2.0% to 2.5%.

2 is a table showing the contents of the elements of the steel species.

2, an upper limit value, a lower limit value, and a target value (A in FIG. 2) of the contents of the elements according to the type of steel are set. Here, the target value may be an average value of the upper limit value and the lower limit value. The target value for the content of these elements is set when the grade is selected and can be set before the charcoal is charged in the converter. The raw materials accommodated in the first hopper part 100 include elements such as carbon (C), silicon (Si), manganese (Mn) and the like shown in FIG. On the other hand, This means setting the weight of each raw material that satisfies the target value for the content of these elements contained in the selected steel species.

The second hopper unit 200 is a basis hopper. The second hopper unit 200 is disposed below the first hopper unit 100. The second hopper unit 200 may also include a plurality of hoppers. Any one hopper of the second hopper unit 200 may be connected to a plurality of hoppers of the first hopper unit 100. The second feeder 210 may be disposed in each hopper of the second hopper unit 200. The raw material stored in the second hopper unit 200 is supplied to the third hopper unit 300 by the second feeder 210.

When the steel type is selected, raw materials including the elements shown in the table of FIG. 2 are selected and supplied to the second hopper unit 200. The second hopper unit 200 temporarily stores the raw materials selected for the basis weight.

The third hopper unit 300 is an injection hopper. The third hopper unit 300 is disposed below the second hopper unit 200. The third hopper unit 300 may be a single hopper and may be connected to all of the plurality of hoppers of the second hopper unit 200. The raw materials that have been weighed are collected in the third hopper unit 300. The weighed raw materials are fed into the converter 1 or the ladle 2 through the third feeder 310 and the relay chute 3 disposed in the third hopper unit 300.

The control unit 400 is connected to the first feeder 110, the second feeder 210, the third feeder 310, and the weighing unit 500. The control unit 400 controls the first hopper unit 100 so that the raw materials stored in the first hopper unit 100 are weighed so that they can be input to the converter 1 or the ladle through the second hopper unit 200 and the third hopper unit 300. [ The first feeder 110, the second feeder 210, and the third feeder 310, respectively.

The weighing part 500 measures the basis weight of the raw material supplied from the first hopper part 100 and accommodated in the second hopper part 200. The weighing part 500 may be disposed in the second hopper part 200.

FIG. 3 is a block diagram showing the configuration of the control unit, FIG. 4 is a block diagram showing an alloy steel weighing method according to the embodiment, and FIG. 5 is a flowchart of the alloy steel weighing method shown in FIG.

The control unit 400 may include a determination unit 410, a selection unit 420, and a compensation unit 330.

Below. As shown in FIGS. 3 to 5, the method for injecting ferroalloys according to the embodiment will be described with reference to the configuration of the control unit 400. FIG. In general, the basis weight of the raw material (ferroalloy) can be calculated by the following equation (1). Normally, the element having a large basis weight may be manganese (Mn) and silicon (Si).

&Quot; (1) "

 6 is a view showing a weighing process for the first raw material.

3 to 6, first, the basis weight of the first raw material A supplied to the second hopper unit 200 is measured (S100)

Assuming, for example, that the first hopper section 100 is made up of six hoppers, and that each hopper has received materials such as A, B, C, D, E and F, A-> B-> C-> D-> E-> F until it is completed. 6B, 6B, 6C, 6D, 6E, and 6F, when the basis weight is in the waiting (or completed) state as shown in FIG. 6A, Phosphorus raw material is referred to as a second raw material.

The weighing part 500 measures the basis weight of the first raw material A supplied to the second hopper part 200 in real time. The control unit 400 controls the first feeder 110 to supply the first raw material A to the second hopper unit 200 until the measured basis weight value of the first raw material A reaches the target basis weight .

Next, the determination unit 410 determines whether the measured basis weight value measured by the basis weight unit 500 reaches a predetermined target basis weight value up to the reference time (S200). If the first feeder 110 is operated If the measured basis weight value does not reach the target basis weight value even though the estimated time (reference time) that the first raw material A is supplied to the second hopper unit 200 and the basis weight is completed is exceeded, The determination unit 410 determines that the first hopper unit 100 is abnormal. When the first raw material A is not present in the first hopper part 100 or the path connecting the first hopper part 100 to the second hopper part 200 is blocked, the supply of the first raw material A is stopped Therefore, the first basis material (A) is insufficient and the measured basis weight value can not reach the target basis weight value.

7 is a view showing the process of emptying the second hopper portion for the basis weight of the second raw material.

5 and 7, if the determination unit 410 determines that the first hopper unit 100 is abnormal, the controller 400 controls the second feeder 210 as shown in FIG. The first raw material A remaining in the second hopper unit 200 is supplied to the third hopper unit 300 to empty the second hopper unit 200 at step S210. C, D, E, F) as an alternative raw material.

8 is a diagram showing a weighing process for the second raw material.

5 and 8, when the second hopper unit 200 is emptied, the selecting unit 420 selects the second raw materials B and C to be replenished by replacing the first raw material A. S310) The selecting unit 420 can select the second raw materials B and C including the elements included in the first raw material A among the plurality of second raw materials B, C, D, E and F . For example, when the first raw material (A) is a sealed manganese, the second raw material (B) containing heavy carbon ferromagnetic manganese containing manganese (Mn) contained in the sealed manganese and the silicon Si) may be selected as another second raw material (C).

The calculation unit 430 calculates the compensation basis value of the second raw materials B and C. (S320) Here, the compensation basis value is defined as a value obtained by calculating the compensation basis value of the first raw material A, Means the weight of the second raw material (B, C) to be replenished. For example, when the first raw material (A) is high-carbon ferromanganese, medium carbon ferromanganese having similar elemental components is selected as one of the second raw materials (B), and the carbonylating agent (C) Can be selected as the raw material (C). If the target basis weight value of the high-carbon ferromanganese is 2000 kg and the measured basis weight of the high-carbon ferromanganese in the second hopper unit 200 is 1000 kg, the basis weight of the high-carbon ferromanganese is insufficient by 1000 kg. At this time. The calculating unit 430 can calculate the compensating basis value of heavy carbon ferromagnetic manganese having a high content of manganese (Mn) and high carbon ferromagnetic manganese as 1000 kg. Since the carbon content of the medium carbon ferromanganese is smaller than that of the high carbon ferromanganese, the calculation unit 430 can calculate the basis weight of the carboniferous material to 300 kg.

like this. When the basis weight of the first raw material (A) is insufficient, the raw material inputting process is not interrupted and automatically replenished through the second raw material (B, C). Therefore, There is an advantage.

The control unit 400 controls the first feeder 110 of the corresponding hopper of the first hopper unit 100 so as to control the first feeder 110 of the first hopper unit 100, The two raw materials B and C are supplied to the second hopper unit 200 (S330)

9 is a view showing a process of completing the basis weight and supplying the second raw material to the third hopper.

9, when the basis weight of the second raw materials B and C is completed in the second hopper unit 200, the controller 400 controls the corresponding hopper of the second hopper unit 200 The second feeder 210 is controlled to supply the second raw materials B and C to the third hopper 300. In step S300,

When the basis weight of the raw material A is completed, the weighing operations for the raw materials B, C, D, E, and F can be repeated until the content of the elements required by the steel species is satisfied (S500)

As described above, the method for injecting an iron-containing ferroalloy according to one preferred embodiment of the present invention and the method for injecting ferroalloy have been specifically described with reference to the accompanying drawings.

It is to be understood that one embodiment of the invention described above is to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description. It is intended that all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

100: First hopper part
110: first feeder
200: second hopper part
210: a second feeder
300: Third hopper part
310: first feeder
400:
410:
420:
430:
500:

Claims (9)

A first hopper part in which different raw materials are accommodated for each of the plurality of hoppers;
A second hopper part connected to the first hopper part;
A control unit coupled to the first hopper unit to control the first hopper unit to supply a first raw material contained in one of the plurality of hoppers of the first hopper unit to the second hopper unit;
And a basis weight portion for measuring a basis weight of the first raw material supplied to the second hopper portion,
Wherein,
And a control unit for controlling the plurality of hoppers of the first hopper so that the measured basis weight value reaches the target basis weight value when the measured basis weight value of the first raw material measured by the basis weight unit up to the reference time does not reach a preset target basis weight value, Wherein the first hopper is controlled to replenish the second raw material contained in the other hopper except for the hopper in which the first raw material is contained. The method according to claim 1,
Wherein,
Wherein the reference time is a predicted time at which the basis weight of the first raw material is completed at a preset time. The method according to claim 1,
Wherein,
A determining unit for determining whether a measured basis weight value of the first raw material measured by the basis weight unit based on the reference time reaches a set target basis weight value;
A selection unit for selecting at least one second raw material including the same element as the element contained in the first raw material;
And a compensating unit for calculating a compensating basis value of the second raw material so that the content of the element of the first raw material measured so as to reach the content of the element of the first raw material corresponding to the target basis weight value. The method according to claim 1,
And a third hopper part connected to the second hopper part,
Wherein the control unit controls the second hopper unit to supply the first raw material or the second raw material accommodated in the second hopper unit to the third hopper unit. 5. The method of claim 4,
Wherein,
When the measured basis weight value of the first raw material measured by the basis weight unit does not reach the set target basis weight value,
And supplies the first raw material contained in the second hopper portion to the third hopper portion to control the second hopper portion to empty the second hopper portion. An alloy of an alloy pouring apparatus comprising a first hopper portion in which a different raw material for each of a plurality of hoppers is accommodated, a second hopper portion connected to the first hopper portion, and a third hopper portion connected to the second hopper portion As an iron-feeding method,
a) measuring a basis weight of a first raw material supplied from the first hopper part to the second hopper part;
b) determining whether the measured basis weight value of the first raw material measured reaches a set target basis weight value, and
c) when the measured basis weight value of the first raw material measured up to the reference time does not reach the set target basis weight value, the measured basis weight value reaches the target basis weight value, And replenishing said second hopper portion with a second raw material accommodated in another hopper except a hopper in which a raw material is accommodated. The method according to claim 6,
The step b)
And determining whether the measured basis weight value of the first raw material measured up to the reference time reaches a set target basis weight value. The method according to claim 6,
After step b)
If the measured basis weight value of the first raw material does not reach the set target basis weight value,
And supplying the first raw material contained in the second hopper portion to the third hopper portion to empty the second hopper portion. The method according to claim 6,
The step c)
Selecting at least one second raw material containing the same elements as the elements contained in the first raw material;
And calculating a compensation basis value of the selected second raw material so that the content of the element of the first raw material measured reaches the content of the element of the first raw material corresponding to the target basis weight value .

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