WO2015102192A1 - Composition for coating steelmaking dust briquette and steelmaking dust briquette - Google Patents

Composition for coating steelmaking dust briquette and steelmaking dust briquette Download PDF

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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
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WO
WIPO (PCT)
Prior art keywords
steelmaking dust
steelmaking
briquette
ether compound
cellulose ether
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2014/006547
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French (fr)
Korean (ko)
Inventor
김태홍
최낙운
손병희
강민석
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Lotte Fine Chemical Co Ltd
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Samsung Fine Chemicals Co Ltd
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Publication date
Application filed by Samsung Fine Chemicals Co Ltd filed Critical Samsung Fine Chemicals Co Ltd
Priority to BR112016015297-2A priority Critical patent/BR112016015297B1/en
Priority to CN201480071714.XA priority patent/CN105874041B/en
Priority to AU2014374751A priority patent/AU2014374751B2/en
Publication of WO2015102192A1 publication Critical patent/WO2015102192A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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 OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • 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 OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • 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 OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • 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
    • 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 OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • 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 OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • 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
    • 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.

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  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

Disclosed are a composition for coating steelmaking dust briquette and steelmaking dust briquette. The disclosed composition for coating steelmaking dust briquette contains a cellulose ether compound.

Description

제강분진 조개탄 코팅용 조성물 및 제강분진 조개탄Steelmaking Dust Briquette Coating Composition and Steelmaking Dust Briquette

제강분진 조개탄 코팅용 조성물 및 제강분진 조개탄이 개시된다. 보다 상세하게는, 셀룰로오스 에테르 화합물을 포함하는 제강분진 조개탄 코팅용 조성물 및 제강분진 조개탄이 개시된다.Disclosed are 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.

제철공정은 철광석과 석탄을 이용하여 조강(crude steel)을 제조하는 제선공정(iron making process)과 상기 조강의 순도를 높이는 제강공정(steel making process)으로 구분된다.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.

제강공정에서 생성되는 제강분진에는 다량의 철 및 선택적으로 아연과 같은 금속성분들이 잔존한다. 종래에는 상기 금속성분들을 함유하는 제강분진을 전량 폐기시켰으나, 최근에는 이를 재사용하기 위한 기술이 개발되고 있다.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.

상기 제강분진은 입도분포가 균일하지 않고, 다양한 성분들을 포함한다. 이러한 제강분진을 재활용하기 위한 대표적인 기술들 중의 하나는 상기 제강분진을 압착성형하여 조개탄(briquette)으로 만들어 제강공정에 재투입하는 기술이다. 대부분의 철강회사에서는 이러한 제강분진을 조개탄 형태로 만들어 재활용하고 있다.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.

상기 조개탄은 재활용을 위해 차량 및 컨베이어 벨트로 이송되는데, 이송 중 발생하는 분진을 저감하기 위해 종래에는 조개탄을 규산소다 수용액으로 코팅하였다. 그러나, 규산소다 수용액을 이용하여 조개탄을 코팅하는 경우 분진 저감의 효과는 있으나, 규산소다 수용액 분사용 노즐이 막히거나, 규산소다 수용액이 조개탄의 표면에만 제한적으로 코팅되어 여전히 분진이 발생하는 문제점이 있다. The coal briquettes are transported to a vehicle and a conveyor belt for recycling. Conventionally, briquettes are coated with an aqueous solution of sodium silicate to reduce dust generated during transportation. However, when coating the briquettes using 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. .

본 발명의 일 구현예는 셀룰로오스 에테르 화합물을 포함하는 제강분진 조개탄 코팅용 조성물을 제공한다.One embodiment of the present invention provides a composition for steelmaking dust briquette coating comprising a cellulose ether compound.

본 발명의 다른 구현예는 상기 제강분진 조개탄 코팅용 조성물을 포함하는 제강분진 조개탄을 제공한다.Another embodiment of the present invention provides a steelmaking dust briquette comprising the composition for steelmaking dust briquette coating.

본 발명의 일 측면은,One aspect of the invention,

셀룰로오스 에테르 화합물을 포함하는 제강분진 조개탄 코팅용 조성물을 제공한다.It provides a composition for steelmaking dust briquette coating containing a cellulose ether compound.

상기 셀룰로오스 에테르 화합물은 메틸셀룰로오스(MC), 히드록시프로필메틸셀룰로오스(HPMC), 히드록시에틸메틸셀룰로오스(HEMC) 및 히드록시에틸셀룰로오스(HEC)로 이루어진 군으로부터 선택된 적어도 1종의 화합물을 포함할 수 있다.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.

상기 셀룰로오스 에테르 화합물은 100~60,000cps의 점도를 가질 수 있다.The cellulose ether compound may have a viscosity of 100 ~ 60,000cps.

상기 셀룰로오스 에테르 화합물의 함량은 상기 제강분진 조개탄 코팅용 조성물 100중량부에 대하여 0.45~5중량부일 수 있다.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.

상기 제강분진 조개탄 코팅용 조성물은 상기 셀룰로오스 에테르 화합물 100중량부에 대하여 바인더 10~100중량부를 더 포함할 수 있다.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.

상기 바인더는 호화 전분을 포함하고, 상기 호화 전분은 옥수수 전분, 찰옥수수 전분 및 감자 전분으로 이루어진 군으로부터 선택된 적어도 1종의 화합물을 포함할 수 있다.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.

상기 제강분진 조개탄 코팅용 조성물은 물을 더 포함할 수 있다.The steelmaking dust briquette coating composition may further include water.

본 발명의 다른 측면은,Another aspect of the invention,

본체; 및main body; And

상기 본체에 코팅된 코팅층을 포함하고,It includes a coating layer coated on the body,

상기 코팅층은 셀룰로오스 에테르 화합물을 포함하는 제강분진 조개탄을 제공한다.The coating layer provides a steelmaking dust briquette containing a cellulose ether compound.

상기 코팅층은 상기 셀룰로오스 에테르 화합물 100중량부에 대하여 바인더 10~100중량부를 더 포함할 수 있다.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.

상기 코팅층은 10~100,000㎛의 두께를 가질 수 있다.The coating layer may have a thickness of 10 ~ 100,000㎛.

본 발명의 일 구현예에 따른 제강분진 조개탄 코팅용 조성물은 셀룰로오스 에테르 화합물을 포함함으로써, 제강분진 조개탄의 코팅 공정시 분사용 노즐의 막힘 현상을 방지할 수 있으며, 제강분진 조개탄의 표면뿐만 아니라 공극에도 코팅되어 이송 중 제강분진 조개탄으로부터의 분진 발생을 저감할 수 있고, 제강분진 조개탄의 강도를 증가시킬 수 있다.Steelmaking dust briquette coating composition according to an embodiment of the present invention 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.

이하, 본 발명의 일 구현예에 따른 제강분진 조개탄 코팅용 조성물을 상세히 설명한다.Hereinafter, the steelmaking dust briquette coating composition according to an embodiment of the present invention will be described in detail.

본 발명의 일 구현예에 따른 제강분진 조개탄 코팅용 조성물은 셀룰로오스 에테르 화합물을 포함한다. 본 명세서에서, 「제강분진」이란 용광로 제강분진(blast furnace dust), 전기로 제강분진(electric arc furnace dust) 이들의 혼합물을 의미한다.Steelmaking dust briquette coating composition according to an embodiment of the present invention comprises a cellulose ether compound. As used herein, the term "steelmaking dust" refers to a mixture of blast furnace dust and electric arc furnace dust.

상기 셀룰로오스 에테르 화합물은 물에 잘 용해될 뿐만 아니라, 수용액 상태로 노즐을 통해 분사될 경우 노즐의 내표면에 석출되지 않아 노즐 구멍을 막지 않는다. 또한, 상기 셀룰로오스 에테르 화합물은 제강분진 조개탄에 코팅될 경우, 상기 제강분진 조개탄의 표면을 덮을 뿐만 아니라 상기 제강분진 조개탄의 공극으로도 침투되기 때문에 상기 제강분진 조개탄의 이송 중 상기 제강분진 조개탄으로부터 분진이 발생하는 것을 방지하고 그의 강도를 증가시킨다.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. In addition, 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.

상기 셀룰로오스 에테르 화합물은 메틸셀룰로오스(MC), 히드록시프로필메틸셀룰로오스(HPMC), 히드록시에틸메틸셀룰로오스(HEMC) 및 히드록시에틸셀룰로오스(HEC)로 이루어진 군으로부터 선택된 적어도 1종의 화합물을 포함할 수 있다.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.

상기 셀룰로오스 에테르 화합물은 100~60,000cps(centipoise)의 점도를 가질 수 있다. 본 명세서에서, 「셀룰로오스 에테르 화합물의 점도」란 Brookfield사의 DV-Ⅱ+Pro를 사용하여 측정된 점도로서, 20±0.1℃에서 2중량%의 농도를 갖는 셀룰로오스 에테르 화합물 수용액의 점도를 의미한다. The cellulose ether compound may have a viscosity of 100 to 60,000 cps (centipoise). In this specification, "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 | concentration of 2 weight% at 20 +/- 0.1 degreeC.

상기 셀룰로오스 에테르 화합물의 함량은 상기 제강분진 조개탄 코팅용 조성물 100중량부에 대하여 0.45~5중량부일 수 있다. 상기 셀룰로오스 에테르 화합물의 함량이 상기 범위 이내이면, 분진 발생이 적고 강도가 개선된 제강분진 조개탄을 얻을 수 있다.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. When 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.

상기 제강분진 조개탄 코팅용 조성물은 상기 셀룰로오스 에테르 화합물 100중량부에 대하여 바인더 10~100중량부를 더 포함할 수 있다. 상기 바인더의 함량이 상기 범위 이내이면, 상기 셀룰로오스 에테르 화합물의 사용량을 줄여 상기 제강분진 조개탄 코팅용 조성물의 제조비용을 절감할 수 있으며, 상기 제강분진 조개탄 코팅용 조성물의 건조속도를 증가시킬 수 있고, 분진 발생이 적으며 강도가 개선된 제강분진 조개탄을 얻을 수 있다.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. 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.

상기 바인더는 호화 전분을 포함하고, 상기 호화 전분은 옥수수 전분, 찰옥수수 전분 및 감자 전분으로 이루어진 군으로부터 선택된 적어도 1종의 화합물을 포함할 수 있다.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.

상기 제강분진 조개탄 코팅용 조성물은 물을 더 포함할 수 있다. 상기 물의 함량은 상기 제강분진 조개탄 코팅용 조성물의 총 함량에서 상기 셀룰로오스 에테르 화합물의 함량 및 상기 바인더의 함량을 제외한 함량일 수 있다.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.

본 발명의 다른 구현예는 본체 및 상기 본체에 코팅된 코팅층을 포함한다.Another embodiment of the present invention includes a body and a coating layer coated on the body.

상기 본체는 상기 제강분진 조개탄 코팅용 조성물로 코팅되지 않은 제강분진 조개탄을 의미한다.The main body refers to steelmaking dust briquettes which are not coated with the steelmaking dust briquette coating composition.

상기 코팅층은 셀룰로오스 에테르 화합물을 포함한다.The coating layer comprises a cellulose ether compound.

상기 코팅층은 상기 셀룰로오스 에테르 화합물 100중량부에 대하여 바인더 10~100중량부를 더 포함할 수 있다. 상기 바인더의 함량이 상기 범위 이내이면, 상기 셀룰로오스 에테르 화합물의 사용량을 줄여 상기 본체의 코팅 비용을 절감할 수 있고, 상기 본체의 코팅 시간을 단축할 수 있으며, 분진 발생이 적고 강도가 개선된 제강분진 조개탄을 얻을 수 있다.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. 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 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.

상기 코팅층은 10~100,000㎛의 두께를 가질 수 있다. 상기 코팅층의 두께가 상기 범위 이내이면, 비교적 적은 비용으로 분진 발생이 적고 강도가 개선된 제강분진 조개탄을 얻을 수 있다.The coating layer may have a thickness of 10 ~ 100,000㎛. 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.

이하, 실시예들을 들어 본 발명에 관하여 더욱 상세히 설명하지만, 본 발명이 이러한 실시예들에 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these Examples.

실시예Example

제조예 1: 코팅되지 않은 제강분진 조개탄의 제조Preparation Example 1 Preparation of Uncoated Steel Dust Briquette

국내의 철강회사에서 입수한 제강분진 10kg을 Briquette machine (㈜ 제일산기, 주문제작)으로 압착성형하여 30개의 제강분진 조개탄을 제조하였다. 상기 제조된 제강분진 조개탄은 1개당 무게가 평균적으로 20g이었다.30 kg of steel dust briquettes were manufactured by compression molding 10kg of steelmaking dust obtained from a domestic steel company with a briquette machine (Jeongsan Industrial Co., Ltd.). The steelmaking dust briquettes prepared above had an average weight of 20 g per piece.

실시예 1~5Examples 1-5

(제강분진 조개탄 코팅용 조성물의 제조)(Preparation of composition for steelmaking dust briquette coating)

셀룰로오스 에테르 화합물, 호화 전분 및 물을 혼합하여 제강분진 조개탄 코팅용 조성물을 제조하였다. 여기서, 물의 함량은 상기 제강분진 조개탄 코팅용 조성물 100중량부에 대하여 상기 셀룰로오스 에테르 화합물 및 상기 호화 전분의 합계 함량이 2중량부가 되도록 조절되었다. 상기 각 실시예에서 사용된 셀룰로오스 에테르 화합물의 종류와 함량, 및 호화 전분의 함량을 하기 표 1에 나타내었다. 또한, 상기 각 실시예에서 제조된 제강분진 조개탄 코팅용 조성물의 점도를 Brookfield사의 DV-Ⅱ+Pro로 20±0.1℃에서 측정하여, 그 결과를 하기 표 1에 나타내었다.A cellulose ether compound, gelatinized starch and water were mixed to prepare a composition for steelmaking dust briquette coating. Here, 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. In addition, the viscosity of the steelmaking dust briquette coating composition prepared in each of the above Examples was measured at 20 ± 0.1 ℃ by DV-II + Pro of Brookfield, the results are shown in Table 1 below.

표 1 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 Table 1 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

*1 HPMC: 삼성정밀화학, 메셀로스®HPMC, 점도: 300cps* 1 HPMC: Samsung Fine Chemicals, Mecellose ® HPMC, Viscosity: 300 cps

*2 HEMC: 삼성정밀화학, 메셀로스®HEMC, 점도: 300cps* 2 HEMC: Samsung Fine Chemicals, Mecellose ® HEMC, Viscosity: 300 cps

*3 MC: 삼성정밀화학, 메셀로스®MC, 점도: 300cps* 3 MC: Samsung Fine Chemicals, Mecellose ® MC, Viscosity: 300 cps

*4 호화 전분: 삼양사, 썬프리젤® * 4 Luxury Starch: Samyang Corporation, Sunfree Gel ®

(코팅된 제강분진 조개탄의 제조)(Production of Coated Steel Dust Briquette)

상기 각 실시예에서 제조된 제강분진 조개탄 코팅용 조성물을 상기 제조예 1에서 제조된 제강분진 조개탄에 분무법에 의해 30㎛의 두께로 코팅한 다음, 60℃에서 1시간 동안 건조시켰다. 결과로서, 코팅된 제강분진 조개탄을 얻었다.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 μm, and then dried at 60 ° C. for 1 hour. As a result, a coated steelmaking dust briquette was obtained.

비교예 1: 제강분진 조개탄 코팅용 조성물 및 코팅된 제강분진 조개탄의 제조 Comparative Example 1: Preparation of Steelmaking Dust Briquette Coating Composition and Coating of Steelmaking Dust Briquette

규산소다(Sigma Aldrich, Na2O(SiO2))를 물에 용해시켜 2중량%의 농도를 갖는 규산소다 수용액을 제조하였다. 이후, 상기 규산소다 수용액을 상기 제조예 1에서 제조된 제강분진 조개탄에 분무법에 의해 30㎛의 두께로 코팅한 다음, 60℃에서 1시간 동안 건조시켰다. 결과로서, 코팅된 제강분진 조개탄을 얻었다.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 μm 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.

평가예Evaluation example

평가예 1Evaluation example 1

상기 실시예 1~5 및 비교예 1에서 제조된, 상기 각각의 코팅된 제강분진 조개탄의 분진 발생 정도 및 낙하강도를 하기와 같은 방법으로 평가하여, 그 결과를 하기 표 2에 나타내었다.The degree of dust generation and the drop strength of the coated steelmaking dust briquettes prepared in Examples 1 to 5 and Comparative Example 1 were evaluated in the following manner, and the results are shown in Table 2 below.

(분진발생 정도 평가)(Evaluation of dust generation)

상기 각각의 코팅된 제강분진 조개탄을 손으로 문지른 후 손에 묻어나는 분진의 정도를 육안으로 관찰하여 5점척도법에 의해 분진발생의 정도를 평가하였다. 이때, 점수가 낮을수록 분진발생의 정도가 작은 것을 의미한다. After rubbing each coated steel-making coal briquettes by hand, the degree of dust on the hand was visually observed to evaluate the degree of dust generation by a 5-point scale method. At this time, the lower the score means that the degree of dust generation is smaller.

(낙하강도 평가)(Drop strength evaluation)

상기 각각의 코팅된 제강분진 조개탄을 5m 높이에서 5회 반복하여 낙하시켰다. 이후, 상기 각각의 코팅된 제강분진 조개탄의 잔존하는 파편 중 10mm 이상의 파편들의 총 무게를 낙하전 상기 각각의 코팅된 제강분진 조개탄의 무게에 대한 백분율로 나타내어, 그 값을 낙하강도로 평가하였다. 이때, 값이 클수록 낙하강도가 큰 것을 의미한다.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.

표 2 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 TABLE 2 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

상기 표 2를 참조하면, 실시예 1~5에서 제조된 각각의 코팅된 제강분진 조개탄은 비교예 1에서 제조된 코팅된 제강분진 조개탄에 비해 분진발생의 정도는 작고 낙하강도는 큰 것으로 나타났다.Referring to Table 2, 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.

본 발명은 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 본 기술 분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 다른 구현예가 가능하다는 점을 이해할 것이다. 따라서, 본 발명의 진정한 기술적 보호 범위는 첨부된 특허청구범위의 기술적 사상에 의하여 정해져야 할 것이다.Although the present invention has been described with reference to the examples, these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

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; And 제1항 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.
PCT/KR2014/006547 2013-12-31 2014-07-18 Composition for coating steelmaking dust briquette and steelmaking dust briquette Ceased WO2015102192A1 (en)

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