WO2015102192A1 - Composition for coating steelmaking dust briquette and steelmaking dust briquette - Google Patents
Composition for coating steelmaking dust briquette and steelmaking dust briquette Download PDFInfo
- Publication number
- WO2015102192A1 WO2015102192A1 PCT/KR2014/006547 KR2014006547W WO2015102192A1 WO 2015102192 A1 WO2015102192 A1 WO 2015102192A1 KR 2014006547 W KR2014006547 W KR 2014006547W WO 2015102192 A1 WO2015102192 A1 WO 2015102192A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- steelmaking dust
- steelmaking
- briquette
- ether compound
- cellulose ether
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/02—Working-up flue dust
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/10—Treating solid fuels to improve their combustion by using additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
- C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
- C10L5/14—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with organic binders
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/26—After-treatment of the shaped fuels, e.g. briquettes
- C10L5/32—Coating
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/34—Other details of the shaped fuels, e.g. briquettes
- C10L5/36—Shape
- C10L5/361—Briquettes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/44—Solid fuels essentially based on materials of non-mineral origin on vegetable substances
- C10L5/445—Agricultural waste, e.g. corn crops, grass clippings, nut shells or oil pressing residues
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/244—Binding; Briquetting ; Granulating with binders organic
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
- C21C2007/0062—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires with introduction of alloying or treating agents under a compacted form different from a wire, e.g. briquette, pellet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Definitions
- compositions for steelmaking dust briquette coating and steelmaking dust briquettes More specifically, a composition for steelmaking dust briquette coating and a steelmaking dust briquette containing a cellulose ether compound are disclosed.
- the steelmaking process is divided into an iron making process for manufacturing crude steel using iron ore and coal and a steel making process for increasing the purity of the crude steel.
- Steelmaking dust generated in the steelmaking process contains a large amount of iron and optionally metal components such as zinc. Conventionally, all the steelmaking dust containing the metal components was discarded, but recently, a technique for reusing it has been developed.
- the steelmaking dust is not uniform in particle size distribution, and contains various components.
- One of the representative technologies for recycling such steelmaking dust is a technique of compression molding the steelmaking dust into briquettes and re-entering the steelmaking process. Most steel companies recycle these steel dust in the form of briquettes.
- the coal briquettes are transported to a vehicle and a conveyor belt for recycling.
- briquettes are coated with an aqueous solution of sodium silicate to reduce dust generated during transportation.
- an aqueous solution of sodium silicate there is an effect of reducing dust, but there is a problem that dust still occurs because the nozzle for spraying the aqueous solution of sodium silicate is blocked, or the aqueous solution of sodium silicate is coated only on the surface of the briquettes. .
- One embodiment of the present invention provides a composition for steelmaking dust briquette coating comprising a cellulose ether compound.
- Another embodiment of the present invention provides a steelmaking dust briquette comprising the composition for steelmaking dust briquette coating.
- composition for steelmaking dust briquette coating containing a cellulose ether compound.
- the cellulose ether compound may include at least one compound selected from the group consisting of methyl cellulose (MC), hydroxypropyl methyl cellulose (HPMC), hydroxyethyl methyl cellulose (HEMC) and hydroxyethyl cellulose (HEC). have.
- MC methyl cellulose
- HPMC hydroxypropyl methyl cellulose
- HEMC hydroxyethyl methyl cellulose
- HEC hydroxyethyl cellulose
- the cellulose ether compound may have a viscosity of 100 ⁇ 60,000cps.
- the content of the cellulose ether compound may be 0.45 to 5 parts by weight based on 100 parts by weight of the steelmaking dust briquette coating composition.
- the steelmaking dust briquette coating composition may further include a binder 10 to 100 parts by weight based on 100 parts by weight of the cellulose ether compound.
- the binder includes gelatinized starch, and the gelatinized starch may include at least one compound selected from the group consisting of corn starch, waxy corn starch and potato starch.
- the steelmaking dust briquette coating composition may further include water.
- It includes a coating layer coated on the body
- the coating layer provides a steelmaking dust briquette containing a cellulose ether compound.
- the coating layer may further include 10 to 100 parts by weight of the binder with respect to 100 parts by weight of the cellulose ether compound.
- the coating layer may have a thickness of 10 ⁇ 100,000 ⁇ m.
- Steelmaking dust briquette coating composition includes a cellulose ether compound, it is possible to prevent the clogging phenomenon of the nozzle for the injection during the coating process of steelmaking dust briquettes, not only on the surface of the steelmaking dust briquettes but also voids
- the coating can reduce the generation of dust from the steelmaking dust briquettes during transportation, and can increase the strength of the steelmaking dust briquettes.
- Steelmaking dust briquette coating composition according to an embodiment of the present invention comprises a cellulose ether compound.
- steelmaking dust refers to a mixture of blast furnace dust and electric arc furnace dust.
- the cellulose ether compound not only dissolves well in water, but does not precipitate on the inner surface of the nozzle when sprayed through the nozzle in an aqueous state, and thus does not block the nozzle hole.
- dust when the cellulose ether compound is coated on the steelmaking dust briquettes, dust not only covers the surface of the steelmaking dust briquettes but also penetrates into the pores of the steelmaking dust briquettes. Prevents from occurring and increases its strength.
- the cellulose ether compound may include at least one compound selected from the group consisting of methyl cellulose (MC), hydroxypropyl methyl cellulose (HPMC), hydroxyethyl methyl cellulose (HEMC) and hydroxyethyl cellulose (HEC). have.
- MC methyl cellulose
- HPMC hydroxypropyl methyl cellulose
- HEMC hydroxyethyl methyl cellulose
- HEC hydroxyethyl cellulose
- the cellulose ether compound may have a viscosity of 100 to 60,000 cps (centipoise).
- the viscosity of a cellulose ether compound is a viscosity measured using DV-II + Pro of Brookfield, and means the viscosity of the aqueous solution of a cellulose ether compound which has a density
- the content of the cellulose ether compound may be 0.45 to 5 parts by weight based on 100 parts by weight of the steelmaking dust briquette coating composition.
- the content of the cellulose ether compound is within the above range, it is possible to obtain steelmaking dust briquettes with less dust generation and improved strength.
- the steelmaking dust briquette coating composition may further include a binder 10 to 100 parts by weight based on 100 parts by weight of the cellulose ether compound.
- a binder 10 to 100 parts by weight based on 100 parts by weight of the cellulose ether compound When the content of the binder is within the above range, it is possible to reduce the amount of the cellulose ether compound used to reduce the manufacturing cost of the steelmaking dust briquette coating composition, increase the drying speed of the steelmaking dust briquette coating composition, Steelmaking dust briquettes with low dust generation and improved strength can be obtained.
- the binder includes gelatinized starch, and the gelatinized starch may include at least one compound selected from the group consisting of corn starch, waxy corn starch and potato starch.
- the steelmaking dust briquette coating composition may further include water.
- the water content may be a content excluding the content of the cellulose ether compound and the content of the binder from the total content of the steelmaking dust briquette coating composition.
- Another embodiment of the present invention includes a body and a coating layer coated on the body.
- the main body refers to steelmaking dust briquettes which are not coated with the steelmaking dust briquette coating composition.
- the coating layer comprises a cellulose ether compound.
- the coating layer may further include 10 to 100 parts by weight of the binder with respect to 100 parts by weight of the cellulose ether compound.
- the content of the binder is within the above range, it is possible to reduce the amount of the cellulose ether compound used to reduce the coating cost of the main body, to reduce the coating time of the main body, less dust generation and improved steelmaking dust You can get Briquettes.
- the coating layer may have a thickness of 10 ⁇ 100,000 ⁇ m. When the thickness of the coating layer is within the above range, steelmaking dust briquettes having low dust generation and improved strength can be obtained at a relatively low cost.
- a cellulose ether compound, gelatinized starch and water were mixed to prepare a composition for steelmaking dust briquette coating.
- the water content was adjusted so that the total content of the cellulose ether compound and the gelatinized starch was 2 parts by weight based on 100 parts by weight of the steelmaking dust briquette coating composition.
- the type and content of the cellulose ether compound used in each of the above examples, and the content of gelatinized starch are shown in Table 1 below.
- the viscosity of the steelmaking dust briquette coating composition prepared in each of the above Examples was measured at 20 ⁇ 0.1 °C by DV-II + Pro of Brookfield, the results are shown in Table 1 below.
- Example 1 Example 2
- Example 3 Example 4
- Power starch * 4 (part by weight) 10 10 10 10 10 10 10 10 10 10 Viscosity (cps) 205 195 220 210 200
- the steelmaking dust briquette coating composition prepared in each of the above examples was coated on the steelmaking dust briquette prepared in Preparation Example 1 by a spraying method with a thickness of 30 ⁇ m, and then dried at 60 ° C. for 1 hour. As a result, a coated steelmaking dust briquette was obtained.
- Sodium silicate (Sigma Aldrich, Na 2 O (SiO 2 )) was dissolved in water to prepare an aqueous sodium silicate solution having a concentration of 2% by weight. Subsequently, the aqueous sodium silicate solution was coated to a thickness of 30 ⁇ m by the spray method on the steelmaking dust briquettes prepared in Preparation Example 1, and then dried at 60 ° C. for 1 hour. As a result, a coated steelmaking dust briquette was obtained.
- Each coated steelmaking briquette was dropped five times at a height of 5 m. Then, the total weight of the debris of 10 mm or more among the remaining debris of each coated steelmaking briquette was expressed as a percentage of the weight of each coated steelmaking briquette before dropping, and the value was evaluated as the drop strength. In this case, a larger value means that the drop strength is larger.
- each coated steelmaking dust briquettes prepared in Examples 1 to 5 was found to have a small degree of dust generation and a large drop strength compared to the coated steelmaking dust briquettes prepared in Comparative Example 1.
Abstract
Description
실시예 1 | 실시예 2 | 실시예 3 | 실시예 4 | 실시예 5 | |
HPMC*1(중량부) | 90 | 80 | 0 | 0 | 0 |
HEMC*2(중량부) | 0 | 0 | 90 | 80 | 0 |
MC*3(중량부) | 0 | 10 | 0 | 10 | 90 |
호화 전분*4(중량부) | 10 | 10 | 10 | 10 | 10 |
점도(cps) | 205 | 195 | 220 | 210 | 200 |
Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
HPMC * 1 (by weight) | 90 | 80 | 0 | 0 | 0 |
HEMC * 2 (by weight) | 0 | 0 | 90 | 80 | 0 |
MC * 3 (part by weight) | 0 | 10 | 0 | 10 | 90 |
Luxury starch * 4 (part by weight) | 10 | 10 | 10 | 10 | 10 |
Viscosity (cps) | 205 | 195 | 220 | 210 | 200 |
실시예 | 비교예 | |||||
1 | 2 | 3 | 4 | 5 | 1 | |
분진발생의정도 | 2.8 | 3.0 | 2.5 | 2.8 | 2.9 | 3.7 |
낙하강도(중량%) | 87.2 | 89.1 | 86.3 | 87.5 | 88.6 | 85.5 |
Example | Comparative example | |||||
One | 2 | 3 | 4 | 5 | One | |
Degree of dust generation | 2.8 | 3.0 | 2.5 | 2.8 | 2.9 | 3.7 |
Drop strength (% by weight) | 87.2 | 89.1 | 86.3 | 87.5 | 88.6 | 85.5 |
Claims (8)
- 셀룰로오스 에테르 화합물을 포함하는 제강분진 조개탄 코팅용 조성물.Steelmaking dust briquette coating composition comprising a cellulose ether compound.
- 제1항에 있어서,The method of claim 1,상기 셀룰로오스 에테르 화합물은 메틸셀룰로오스(MC), 히드록시프로필메틸셀룰로오스(HPMC), 히드록시에틸메틸셀룰로오스(HEMC) 및 히드록시에틸셀룰로오스(HEC)로 이루어진 군으로부터 선택된 적어도 1종의 화합물을 포함하는 제강분진 조개탄 코팅용 조성물.The cellulose ether compound is steelmaking comprising at least one compound selected from the group consisting of methyl cellulose (MC), hydroxypropyl methyl cellulose (HPMC), hydroxyethyl methyl cellulose (HEMC) and hydroxyethyl cellulose (HEC) Composition for dust briquette coating.
- 제1항에 있어서, The method of claim 1,상기 셀룰로오스 에테르 화합물은 100~60,000cps의 점도를 갖는 제강분진 조개탄 코팅용 조성물.The cellulose ether compound is a composition for steelmaking dust briquette coating having a viscosity of 100 ~ 60,000cps.
- 제1항에 있어서,The method of claim 1,상기 셀룰로오스 에테르 화합물의 함량은 상기 제강분진 조개탄 코팅용 조성물 100중량부에 대하여 0.45~5중량부인 제강분진 조개탄 코팅용 조성물.The content of the cellulose ether compound is 0.45 to 5 parts by weight based on 100 parts by weight of the steelmaking dust briquette coating composition.
- 제1항에 있어서,The method of claim 1,상기 셀룰로오스 에테르 화합물 100중량부에 대하여 바인더 10~100중량부를 더 포함하는 제강분진 조개탄 코팅용 조성물.Steelmaking dust briquette coating composition further comprises 10 to 100 parts by weight of the binder relative to 100 parts by weight of the cellulose ether compound.
- 제1항에 있어서,The method of claim 1,상기 바인더는 호화 전분을 포함하고, 상기 호화 전분은 옥수수 전분, 찰옥수수 전분 및 감자 전분으로 이루어진 군으로부터 선택된 적어도 1종의 화합물을 포함하는 제강분진 조개탄 코팅용 조성물.The binder comprises a gelatinized starch, wherein the gelatinized starch is at least one compound selected from the group consisting of corn starch, waxy corn starch and potato starch, steelmaking dust briquette coating composition.
- 제1항에 있어서,The method of claim 1,상기 제강분진 조개탄 코팅용 조성물은 물을 더 포함하는 제강분진 조개탄 코팅용 조성물.The steelmaking dust briquette coating composition is a steelmaking dust briquette coating composition further comprises water.
- 본체; 및main body; And제1항 내지 제7항 중 어느 한 항에 따른 제강분진 조개탄 코팅용 조성물로 상기 본체에 코팅된 코팅층을 포함하는 제강분진 조개탄.Steelmaking dust briquettes comprising a coating layer coated on the main body of the composition for steelmaking dust briquettes according to any one of claims 1 to 7.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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AU2014374751A AU2014374751B2 (en) | 2013-12-31 | 2014-07-18 | Composition for coating steelmaking dust briquette and steelmaking dust briquette |
CN201480071714.XA CN105874041B (en) | 2013-12-31 | 2014-07-18 | Composition for coating steelmaking dust block and steelmaking dust block |
BR112016015297-2A BR112016015297B1 (en) | 2013-12-31 | 2014-07-18 | composition for the coating of steel powder briquettes, and steel powder briquettes |
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KR10-2013-0169401 | 2013-12-31 | ||
KR1020130169401A KR102155601B1 (en) | 2013-12-31 | 2013-12-31 | Composition for coating steel dust briquette and electric arc furnace dust briquette |
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WO2015102192A1 true WO2015102192A1 (en) | 2015-07-09 |
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KR (1) | KR102155601B1 (en) |
CN (1) | CN105874041B (en) |
AU (1) | AU2014374751B2 (en) |
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KR101703070B1 (en) * | 2015-09-08 | 2017-02-06 | 주식회사 포스코 | Coal briquettes, method for manufacturing the same and method for manufacturing molten iron |
KR20170076974A (en) * | 2015-12-24 | 2017-07-05 | 롯데정밀화학 주식회사 | Method of manufacturing steel dust briquette |
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2013
- 2013-12-31 KR KR1020130169401A patent/KR102155601B1/en active IP Right Grant
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2014
- 2014-07-18 CN CN201480071714.XA patent/CN105874041B/en active Active
- 2014-07-18 BR BR112016015297-2A patent/BR112016015297B1/en active IP Right Grant
- 2014-07-18 AU AU2014374751A patent/AU2014374751B2/en active Active
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KR101127790B1 (en) * | 2011-05-16 | 2012-03-23 | 주식회사 신승 | Coating composition for cokes |
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KR102155601B1 (en) | 2020-09-14 |
AU2014374751A1 (en) | 2016-05-26 |
CN105874041A (en) | 2016-08-17 |
CN105874041B (en) | 2020-10-02 |
BR112016015297B1 (en) | 2020-12-29 |
AU2014374751B2 (en) | 2018-05-10 |
KR20150079281A (en) | 2015-07-08 |
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