KR20110113223A - The method of manufacture for iron lump of iron dust used plasma - Google Patents
The method of manufacture for iron lump of iron dust used plasma Download PDFInfo
- Publication number
- KR20110113223A KR20110113223A KR1020100032474A KR20100032474A KR20110113223A KR 20110113223 A KR20110113223 A KR 20110113223A KR 1020100032474 A KR1020100032474 A KR 1020100032474A KR 20100032474 A KR20100032474 A KR 20100032474A KR 20110113223 A KR20110113223 A KR 20110113223A
- Authority
- KR
- South Korea
- Prior art keywords
- iron
- melt
- plasma
- melting furnace
- dust
- Prior art date
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Classifications
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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
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/22—Remelting metals with heating by wave energy or particle radiation
- C22B9/226—Remelting metals with heating by wave energy or particle radiation by electric discharge, e.g. plasma
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0006—Electric heating elements or system
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/70—Furnaces for ingots, i.e. soaking pits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0006—Electric heating elements or system
- F27D2099/0031—Plasma-torch heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The present invention relates to a method for manufacturing iron ingots using plasma, wherein only the outside is oxidized and rusted and pure iron inside such as shot dust, iron scale, bearing abrasive dust, etc. After melting with plasma flame to make iron melt, discharge it through the outlet of the lower part of the plasma furnace and transfer the iron melt to the movable caterpillar forming mold installed at the bottom of the outlet. The present invention relates to a method for manufacturing iron dust of iron dust using plasma having excellent economical efficiency that can be dropped and collected and manufactured into iron ingot.
Plasma, steel bars, short dust, plasma torch, caterpillar, forming mold,
Description
The present invention relates to a method for manufacturing iron ingots using plasma, wherein the iron dust, which is oxidized only in the outside and the iron component is preserved in the inside, is graphite together with graphite, and a part of the iron oxide contained in the iron dust is graphite. Simple and economical to convert low-priced iron dust into expensive iron ingots by reducing them into pure iron by reducing the molten iron melt made with pure iron and melting together with the internal iron components in a plurality of forming molds installed in a movable caterpillar. Is to provide this outstanding technology
In order to recover iron by melting and reducing iron dust in the furnace in iron or steelmaking, it must be manufactured by using a bracket after bonding with organic and inorganic adhesives such as molasses, starch, bentonite, cement, etc., because the height of the furnace is high, If iron dust is injected as it is inside the furnace, iron dust is blown to the upper part of the furnace due to the high temperature of the air in the furnace, and even if some reaches the bottom of the furnace, it is slugized in the state of iron oxide before being melted and reduced so that it cannot be recovered as pure iron. Therefore, there is a disadvantage in that the bracketing costs are high when the iron dust is recovered from the furnace without being broken and broken in the furnace, and the iron dust is recovered from the furnace. .
On the other hand, in small cupola furnaces and sintering furnaces, some iron dust is mixed to recover the iron in the recovery of iron by melting the scrap metal, and coke, anthracite coal, bituminous coal, etc. are frequently used to recover iron and to supply iron. In some cases, these materials burn and emit a lot of harmful gases such as carbon dioxide and sulfuric acid gas to pollute the environment.In order to recover iron with iron dust alone, iron dust must be bracketed, resulting in cost loss. .
In addition, many methods of waste melting using plasma, in which harmful wastes such as incineration ash or asbestos, etc., are used as plasma flames to make harmless glass crystals have been resumed. Since there is no technology to directly manufacture a molten melt as a product because it is a suppressing technology, the melt is simply put into water to make vitrified beads, and then, there is a disadvantage that it can only be used as a raw material in the manufacture of civil engineering materials such as road rovans or bricks.
The present invention is to solve and solve the above problems,
SUMMARY OF THE INVENTION An object of the present invention is to provide a method for producing iron ingots using iron plasma which minimizes the generation of harmful gases due to the combustion of carbon sources such as coal or coke and minimizes the occurrence of slag by rapidly melting iron dust with a high temperature plasma flame. have.
Another object of the present invention is to add a small amount of graphite to the iron dust to lower the melting point of the iron dust to reduce the consumption of electricity due to plasma melting, and the carbon component constituting the graphite combined with oxygen in the iron oxide partially present in the iron dust The carbon monoxide is generated by carbon monoxide and carbon dioxide to increase the net iron recovery rate, and the generated carbon monoxide is made into a reducing atmosphere inside the plasma melting furnace to reduce nitrogen oxides while combining with oxygen of nitrogen oxides generated by oxidizing air at high temperatures in the furnace. The present invention provides a method for producing iron ingots of iron dust using an environmentally friendly plasma that removes harmful gases.
Still another object of the present invention is that the molten iron melted in the plasma melting furnace is discharged to the outlet of the lower part of the melting furnace is filled in the movable caterpillar forming mold in the lower portion of the outlet, and then naturally cooled while being transported in the caterpillar forming mold dropping from the mold The present invention provides a method for producing iron ingots of iron dust using plasma, which is easily manufactured and operated.
According to the present invention for achieving the above object, in the method of manufacturing iron dust using plasma, each storage hopper for storing iron dust and graphite, a conveying conveyor at the bottom of each storage hopper, the conveying conveyer An input equipment unit comprising an input pusher for inputting the iron dust and graphite which have been made into the melting furnace; A melting furnace providing a place where the injected iron dust and graphite are melted, a plasma torch penetrating the ceiling of the melting furnace to form a hot plasma flame inside the melting furnace, an iron melt outlet for discharging the molten melt to the outside of the melting furnace; A melting facility unit having a slug melt outlet; A melt processing facility comprising a slug melting facility having a plurality of forming molds provided on a caterpillar so that the discharged iron melt is formed into a steel ingot and a water tank for glass-beading the molten slug; An exhaust gas treatment facility comprising a cooling facility for cooling the high-temperature exhaust gas generated during melting and an air pollution prevention facility for removing harmful substances from the cooled exhaust gas; It is to provide a method for producing iron ingots of iron dust using a plasma.
According to the method for producing iron dust using plasma according to the present invention, the amount of exhaust gas generated is lower than that of melting iron using fossil fuel by rapidly melting iron dust using high temperature plasma flame. It provides an environmentally friendly iron dust melting environment and can be melted as it is without forming the iron dust, so the processing process is simple and economical effect.
In addition, the present invention can be prepared by injecting the molten iron melt in the mold to the natural ingot in the cooling state is excellent in convenience.
Hereinafter, with reference to the drawings will be described in detail. However, these drawings are for illustrative purposes only and the present invention is not limited thereto.
1 is a system configuration of a method for producing iron ingots of iron dust using a plasma according to an embodiment of the present invention.
Referring to FIG. 1, a system constructed by a method for manufacturing iron dust using plasma according to an embodiment of the present invention is largely equipped with an
The
The
The interior of the
Meanwhile, a
The
Meanwhile, the slug melt having a low specific gravity in the
Exhaust
Meanwhile, the air
As such, those skilled in the art to which the present invention pertains will understand that the present invention may be implemented in other specific forms without changing the technical spirit or essential features.
Therefore, the exemplary embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the detailed description, and the meaning and scope of the claims and All changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.
1 is a block diagram of a method for producing iron ingots of iron dust using a plasma according to an embodiment of the present invention.
Explanation of symbols on the main parts of the drawings
100: input equipment 101: iron dust storage hopper
102: graphite storage hopper 103: iron dust conveying conveyor
104: graphite conveying conveyor 105: iron dust conveying conveyor outlet
106: graphite conveying conveyor outlet 108: input pusher
109: hydraulic cylinder 200: melting facility
201: melting furnace 202: ceiling
203: plasma flame 204: plasma torch
205: melt 206: iron melt outlet
207: slug melt outlet 208: bottom
209: wall 210: casing
211: refractory brick 212: air inlet
213: drive unit 214: power receiving plate
300: melt processing equipment unit 301: iron melt processing equipment
302: slug melt processing equipment 303: caterpillar
304: forming mold 305: ingot
306: Upper track 307: Lower track
400: exhaust gas treatment facility portion 401: gas discharge port
402: cooler 403: air pollution prevention facility
404: blower
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020100032474A KR20110113223A (en) | 2010-04-09 | 2010-04-09 | The method of manufacture for iron lump of iron dust used plasma |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020100032474A KR20110113223A (en) | 2010-04-09 | 2010-04-09 | The method of manufacture for iron lump of iron dust used plasma |
Publications (1)
Publication Number | Publication Date |
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KR20110113223A true KR20110113223A (en) | 2011-10-17 |
Family
ID=45028602
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020100032474A KR20110113223A (en) | 2010-04-09 | 2010-04-09 | The method of manufacture for iron lump of iron dust used plasma |
Country Status (1)
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KR (1) | KR20110113223A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017026562A1 (en) * | 2015-08-12 | 2017-02-16 | 한국수력원자력 주식회사 | Plasma melting furnace having lateral discharge gates |
KR20200114014A (en) * | 2019-03-27 | 2020-10-07 | 이종갑 | Molten ore to be recycled and method for fabricating the same |
CN111822654A (en) * | 2020-07-27 | 2020-10-27 | 康硕电气集团有限公司 | A ventilation dust collector for wax matrix 3D prints |
KR20210072550A (en) * | 2019-12-09 | 2021-06-17 | 손익천 | manufacturing method of reduced ore using ferrous and nonferrous by-product powder, manufacturing apparatus of reduced ore |
-
2010
- 2010-04-09 KR KR1020100032474A patent/KR20110113223A/en not_active Application Discontinuation
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017026562A1 (en) * | 2015-08-12 | 2017-02-16 | 한국수력원자력 주식회사 | Plasma melting furnace having lateral discharge gates |
US10914523B2 (en) | 2015-08-12 | 2021-02-09 | Korea Hydro & Nuclear Power Co., Ltd. | Plasma furnace having lateral discharge gates |
KR20200114014A (en) * | 2019-03-27 | 2020-10-07 | 이종갑 | Molten ore to be recycled and method for fabricating the same |
KR20210072550A (en) * | 2019-12-09 | 2021-06-17 | 손익천 | manufacturing method of reduced ore using ferrous and nonferrous by-product powder, manufacturing apparatus of reduced ore |
CN111822654A (en) * | 2020-07-27 | 2020-10-27 | 康硕电气集团有限公司 | A ventilation dust collector for wax matrix 3D prints |
CN111822654B (en) * | 2020-07-27 | 2021-10-26 | 康硕电气集团有限公司 | A ventilation dust collector for wax matrix 3D prints |
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