KR20130077158A - Composition of pellet and pellet using steel dust - Google Patents

Composition of pellet and pellet using steel dust Download PDF

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KR20130077158A
KR20130077158A KR1020110145717A KR20110145717A KR20130077158A KR 20130077158 A KR20130077158 A KR 20130077158A KR 1020110145717 A KR1020110145717 A KR 1020110145717A KR 20110145717 A KR20110145717 A KR 20110145717A KR 20130077158 A KR20130077158 A KR 20130077158A
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pellet
weight
dust
composition
binder
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KR101368407B1 (en
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송명신
송영진
이웅걸
전세훈
박영동
국만호
하동호
이상묵
정용
김정빈
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(주)네비엔
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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
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/2406—Binding; Briquetting ; Granulating pelletizing
    • 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
    • C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
    • 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
    • C22B1/248—Binding; Briquetting ; Granulating of metal scrap or alloys

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  • Engineering & Computer Science (AREA)
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  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

PURPOSE: A pellet composition and a steel dust pellet are provided to reduce a processing of a steel manufacture waste, and to prevent an air pollution caused by a scatter of a steel dust by transporting with manufacturing the steel dust with a pellet. CONSTITUTION: A pellet composition comprises 90-97 weight% of a steel dust, 2-7 weight% of an inorganic dust binder, and 1-3 weight% of a liquid binder. The inorganic dust binder comprises cement, quicklime, and sodium polyacrylate. The liquid binder is selected in a group consisting of polyvinyl alcohol, polyvinylacetate, and ethylene vinyl acetate. A compressive strength the steel dust pellet is more than 2.0 MPa. [Reference numerals] (AA) Compression strength; (B1) Implementation example 1; (B2) Implementation example 2; (B3) Implementation example 3; (CC) Comparison example 1

Description

펠렛 조성물 및 제강 분진 펠렛{COMPOSITION OF PELLET AND PELLET USING STEEL DUST}Pellet composition and steelmaking dust pellets {COMPOSITION OF PELLET AND PELLET USING STEEL DUST}

본 발명은 제강 분진을 포함하는 펠렛 조성물 및 이를 이용한 펠렛에 관한 것이다.The present invention relates to a pellet composition comprising steelmaking dust and pellets using the same.

일반적으로 제철공정에서 발생되는 압연, 열연, 냉연슬러지 등의 슬러지류는 다량의 산화철 성분(약 77%)이 함유되어 있으므로 이의 재이용을 위한 방법이 모색되고 있다.In general, sludges such as rolling, hot rolled and cold rolled sludge generated in the steelmaking process contain a large amount of iron oxide components (about 77%), and a method for reusing them is being sought.

종래에는 발생된 분진을 분진용 피트에 저장, 운반하여 기존 철광석에 혼합하여 소결로를 통해 소결광을 만든 후 철광석의 제조원료로 재이용하는 방법을 사용해 왔다.Conventionally, the generated dust has been stored and transported in dust pits, mixed with existing iron ores, made of sintered ore through a sintering furnace, and used as a raw material for iron ore reuse.

그러나 이와 같은 종래의 방법은 분진용 피트로부터 소결로까지 분진을 운반하는 과정에서 도로변에 분진의 비산으로 인한 대기오염을 가중시키는 문제점이 있고, 또한, 철광석의 제조 원료로서 투입하기 위해서는 저장, 운반 및 소결광을 만드는 복잡한 단계를 거쳐야 하는 문제점이 있었다.However, such a conventional method has a problem of aggravating air pollution due to the scattering of dust on the roadside in the process of transporting dust from the dust pit to the sintering furnace, and storing, transporting and There has been a problem of having to go through a complicated step of making a sintered ore.

대한민국 공개특허 제1999-0055017호에서는 제철공정에서 발생되는 슬러지류 및 액상폐기물을 소각한 후 발생되는 다량의 제강폐기물 소각재를 운송 및 고로 원료로 재이용이 용이하게 하기 위하여 소각재를 이용한 펠릿 제조방법에 관하여 기재하고 있으나, 펠릿의 압축강도가 0.99 내지 1.67kg/cm2로 펠릿이 쉽게 파손되는 문제점이 있다.Korean Patent Laid-Open Publication No. 1999-0055017 discloses a method for producing pellets using incineration in order to facilitate the transportation and reuse of large quantities of steelmaking waste incineration generated after incineration of sludge and liquid waste generated in the steelmaking process. Although described, the pellet has a problem that the pellet is easily broken at 0.99 to 1.67 kg / cm 2 .

대한민국 공개특허 제1999-0055017호Republic of Korea Patent Publication No. 1999-0055017

본 발명의 목적은, 제강 공정에서 발생된 다량의 철분을 함유한 제강 분진을 고형화 또는 펠렛화하여 상기 제강 분진의 운반 시 비산에 의한 대기오염을 최소화하고, 펠렛을 제강 공정에 직접 투입하여 소결광 제조 공정을 거치지 않으므로 제강 폐기물의 처리단계를 축소하여 간편하게 재이용할 수 있도록 한 제강 분진을 이용한 펠렛 조성물 및 이를 이용한 펠렛을 제공하기 위한 것이다.An object of the present invention is to solidify or pelletize steelmaking dust containing a large amount of iron generated in the steelmaking process to minimize air pollution by scattering during transportation of the steelmaking dust, and to produce pellets directly into the steelmaking process to produce sintered ore It is to provide a pellet composition using the steelmaking dust and pellets using the same, so that the process can be easily reused by reducing the processing step of steelmaking waste because it does not go through the process.

또한, 펠렛 제조 시 압축강도가 우수하여 쉽게 파손되지 않는 펠렛을 성형할 수 있는 펠렛 조성물 및 이를 이용한 펠렛을 제공하기 위한 것이다.In addition, it is to provide a pellet composition and a pellet using the same, which is capable of molding a pellet which is not easily broken due to excellent compressive strength during pellet production.

상기 목적을 달성하기 위하여, 본 발명은 조성물 총 중량에 대하여, 제강 분진 90 내지 97중량%, 무기질 분체 바인더 2 내지 7중량% 및 액체 바인더 1 내지 3중량%를 포함하고, 상기 무기질 분체 바인더는 시멘트, 생석회 및 폴리아크릴산 나트륨을 포함하는 펠렛 조성물을 제공한다.In order to achieve the above object, the present invention comprises 90 to 97% by weight steelmaking dust, 2 to 7% by weight of the inorganic powder binder and 1 to 3% by weight of the liquid binder, the inorganic powder binder is cement It provides a pellet composition comprising quicklime and sodium polyacrylate.

또한, 본 발명은 상기 제강 분진을 포함하는 펠렛 조성물을 이용한 제강 분진 펠렛을 제공한다.In addition, the present invention provides a steelmaking dust pellet using the pellet composition comprising the steelmaking dust.

본 발명은 제강공정에서 발생된 다량의 철분을 함유한 제강 분진을 2.0 MPa 이상의 압축강도를 갖는 펠렛으로 제조하여 운반함으로서 제강 분진의 비산에 의한 대기오염을 방지할 수 있고, 소결광으로 만드는 공정을 거치지 않고 고로에 직접 투입할 수 있어 제강 폐기물의 처리 공정을 축소할 수 있다.According to the present invention, steelmaking dust containing a large amount of iron generated in the steelmaking process is manufactured into pellets having a compressive strength of 2.0 MPa or more, thereby preventing air pollution by scattering of steelmaking dust, and undergoing a process of making sintered ore. It can be directly put into the blast furnace, thereby reducing the processing of steelmaking waste.

도 1은 실시예 1 내지 3 및 비교예 1에서 제조된 펠렛의 압축강도에 관한 그래프이다.
도 2는 본 발명의 제강을 포함하는 펠렛의 제조공정에 관한 모식도이다.1 is a graph of the compressive strength of the pellets prepared in Examples 1 to 3 and Comparative Example 1.
2 is a schematic view of the manufacturing process of the pellet containing the steelmaking of the present invention.

이하, 본 발명을 상세하게 설명한다.Hereinafter, the present invention will be described in detail.

본 발명은 조성물 총 중량에 대하여, 제강 분진 90 내지 97중량%, 무기질 분체 바인더 2 내지 7중량% 및 액체 바인더 1 내지 3중량%를 포함하고, 상기 무기질 분체 바인더는 시멘트, 생석회 및 폴리아크릴산 나트륨을 포함하는 펠렛 조성물을 제공한다.The present invention comprises 90 to 97% by weight steelmaking dust, 2 to 7% by weight inorganic powder binder and 1 to 3% by weight liquid binder, the inorganic powder binder is cement, quicklime and sodium polyacrylate based on the total weight of the composition It provides a pellet composition comprising.

상기 제강 분진은 제철 공정에서 발생되는 제강 폐기물 분진으로, 산화철(Fe2O3), 산화칼슘(CaO), 산화아연(ZnO), 산화마그네슘(MgO), 실리카(SiO2), 산화망간(MnO), 산화나트륨(Na2O), 산화칼륨(K2O), 산화알루미늄(Al2O3), 무수황산(SO3), 산화바륨(BaO), 크롬산(Cr2O3), 산화니켈(NiO), 산화티타늄(TiO2), 산화구리(CuO), 산화스트론튬(SrO), 염소(Cl) 등을 포함할 수 있다.The steelmaking dust is steel waste dust generated in the steelmaking process, iron oxide (Fe 2 O 3 ), calcium oxide (CaO), zinc oxide (ZnO), magnesium oxide (MgO), silica (SiO 2 ), manganese oxide (MnO) ), Sodium oxide (Na 2 O), potassium oxide (K 2 O), aluminum oxide (Al 2 O 3 ), sulfuric anhydride (SO 3 ), barium oxide (BaO), chromic acid (Cr 2 O 3 ), nickel oxide (NiO), titanium oxide (TiO 2 ), copper oxide (CuO), strontium oxide (SrO), chlorine (Cl), and the like.

상기 제강 분진은 상기 펠렛 조성물 총 중량에 대하여, 90 내지 97중량% 포함되는 것이 바람직하며, 상기 제강 분진의 함량이 90중량% 미만이면 분진의 함량이 적어 펠렛으로 제조하는데 어려움이 있고, 97중량%를 초과하면 압축강도가 저하되는 문제점이 있다.The steelmaking dust is preferably contained 90 to 97% by weight relative to the total weight of the pellet composition, when the content of the steelmaking dust is less than 90% by weight, the dust content is difficult to produce a pellet, 97% by weight If it exceeds, there is a problem that the compressive strength is lowered.

상기 무기질 분체 바인더는 펠렛의 강도를 향상시키는 역할을 하며, 상기 펠렛 조성물 총 중량에 대하여 2중량% 미만이면 펠렛 건조 후 성형 압축강도가 낮아 성형된 펠렛이 파괴되는 문제점이 있으며, 7중량%를 초과하면 건조 후 펠렛으로서의 기능이 저하되는 문제점이 있다. The inorganic powder binder serves to improve the strength of the pellets, if less than 2% by weight relative to the total weight of the pellet composition, there is a problem that the molded pellet is lowered after the pellet is dried, the molded pellets are destroyed, more than 7% by weight There is a problem that the function as pellets decreases after drying.

이때, 상기 무기질 분체 바인더는 시멘트, 생석회 및 폴리아크릴산 나트륨을 포함하며, 무기질 분체 바인더 총 중량에 대하여, 시멘트 70 내지 89.9중량%, 생석회 10 내지 29중량% 및 폴리아크릴산 나트륨 0.1 내지 1.0중량%로 포함하는 것이 바람직하다. 상기 시멘트, 생석회 및 폴리아크릴산 나트륨의 함량이 상술한 범위를 만족할 경우, 펠렛의 성형 강도가 향상되어 제강로에 재 투입하기까지 성형된 펠렛이 파괴되지 않는 장기 성형 유지 특성이 우수하다.In this case, the inorganic powder binder includes cement, quicklime and sodium polyacrylate, 70 to 89.9% by weight cement, 10 to 29% by weight quicklime and 0.1 to 1.0% by weight sodium polyacrylate based on the total weight of the inorganic powder binder. It is desirable to. When the content of the cement, quicklime and sodium polyacrylate satisfies the above-mentioned range, the molding strength of the pellets is improved, and the long-term shaping retention property is excellent in that the molded pellets are not destroyed until re-insertion into the steelmaking furnace.

상기 액체 바인더는 펠렛의 성형성을 향상시키는 역할을 하며, 상기 펠렛 조성물 총 중량에 대하여 1중량% 미만이면 펠렛의 성형성이 저하되고, 3중량%를 초과하면 펠렛 성형 시 제강 분진의 증착이 발생되는 문제점이 있다. 상기 액체 바인더는 폴리비닐알코올, 폴리비닐 아세테이트 및 에틸렌 비닐 아세테이트로 이루어진 군에서 선택되는 하나 이상인 것이 바람직하며, 보다 바람직하게는 폴리비닐알코올을 포함하는 것이 좋다.The liquid binder serves to improve the formability of the pellets, and if less than 1% by weight relative to the total weight of the pellet composition, the formability of the pellets is lowered, and if it exceeds 3% by weight, deposition of steelmaking dust occurs during pelleting. There is a problem. The liquid binder is preferably at least one selected from the group consisting of polyvinyl alcohol, polyvinyl acetate, and ethylene vinyl acetate, more preferably polyvinyl alcohol.

이때, 시멘트는 규산이칼슘(2CaO·SiO2), 규산삼칼슘(3CaO·SiO2), 알루민산삼칼슘(3CaO·Al2O3) 및 알루미노아철산사칼슘(4CaO·Al2O3Fe2O3) 등을 포함하는 것이 바람직하며, 보다 바람직하게는 포틀랜드 시멘트인 것이 바람직하다.In this case, the cement is dicalcium silicate (2CaOSiO 2 ), tricalcium silicate (3CaOSiO 2 ), tricalcium aluminate (3CaOAl 2 O 3 ) and alumina tetracalcium aluminate (4CaOAl 2 O 3 Fe). 2 O 3 ) and the like, more preferably Portland cement.

또한, 상기 생석회는 산화칼슘(CaO) 50중량% 이상인 것이 바람직하며, 상기 산화칼슘의 함량이 상술한 범위를 만족할 경우, 제강 분진의 함수율이 높은 초기 상태에서 수분의 흡수력이 우수하여 펠렛의 성형율이 높아지는 장점이 있다.In addition, the quicklime is preferably at least 50% by weight of calcium oxide (CaO), and when the content of the calcium oxide satisfies the above-mentioned range, the rate of forming the pellets is excellent due to the excellent water absorption ability of the steel powder dust in the initial state of high moisture content. This has a growing advantage.

본 발명은 상기 펠렛 조성물을 이용한 제강 분진 펠렛을 제공한다.The present invention provides steelmaking dust pellets using the pellet composition.

이때, 상기 제강 분진 펠렛은 압축강도가 2.0MPa 이상인 것이 바람직하다. 상기 압축강도가 2.0MPa 미만이면 펠렛이 쉽게 파손된다. 상기 제강 분진 펠렛의 압축강도가 2.0MPa 미만이면 성형기에서 성형된 펠렛이 저장조로 이송 중에 충격에 의해 펠렛이 쉽게 파손되어 펠렛의 기능을 수행하기 곤란한 문제점이 발생한다.
At this time, the steelmaking dust pellet is preferably a compressive strength of 2.0MPa or more. If the compressive strength is less than 2.0 MPa, the pellets are easily broken. If the compressive strength of the steelmaking dust pellets is less than 2.0 MPa, the pellets formed in the molding machine are easily damaged by the impact during the transfer to the storage tank, which makes it difficult to perform the functions of the pellets.

이하, 본 발명을 실시예에 의해 상세히 설명한다.Hereinafter, the present invention will be described in detail by way of examples.

단, 하기 실시예는 본 발명을 예시하는 것일 뿐, 본 발명의 내용이 하기 실시예에 한정되는 것은 아니다.However, the following examples are illustrative of the present invention, and the present invention is not limited to the following examples.

<< 실시예Example 1> 1>

일반 포틀랜드 시멘트 87.5중량%, 생석회 12.0중량% 및 폴리아크릴산 나트륨 염 0.5중량%를 혼합하여 무기질 분체 바인더를 제조하고, 제강 분진 저장탱크, 무기질 분체 바인더 저장탱크 및 액체 바인더 저장탱크를 각각 설치하여, 상기 저장탱크에 해당 성분을 저장하였다. 이후, 조성물 총 중량에 대하여 제강 분진 96중량%, 무기질 분체 바인더 2중량% 및 액체 바인더로 폴리비닐알코올 2중량%가 혼합된 혼합액을 성형기를 거쳐 펠렛 형태로 성형시킨 후, 성형된 원료를 대기 중에서 24시간 동안 건조시켰다. 이후, 대기 중에서 방냉하여 펠렛을 제조하였다. 87.5% by weight of general Portland cement, 12.0% by weight of quicklime, and 0.5% by weight of sodium polyacrylate salt to prepare an inorganic powder binder, and install a steelmaking dust storage tank, an inorganic powder binder storage tank and a liquid binder storage tank, respectively. The ingredient was stored in a storage tank. Thereafter, a mixed liquid of 96% by weight of steelmaking dust, 2% by weight of inorganic powder binder, and 2% by weight of polyvinyl alcohol with a liquid binder was formed into a pellet through a molding machine, and then the formed raw material was in the air. Dry for 24 hours. Thereafter, the pellet was cooled by air cooling.

<< 실시예Example 2> 2>

상기 실시예 1에 있어서, 제강 분진 94중량%, 무기질 분체 바인더 4중량% 및 폴리비닐알코올 2중량%를 혼합하는 것을 제외하고, 상기 실시예 1과 동일하게 실시하여 펠렛을 제조하였다.In Example 1, pellets were prepared in the same manner as in Example 1, except that 94% by weight of steelmaking dust, 4% by weight of inorganic powder binder, and 2% by weight of polyvinyl alcohol were mixed.

<< 실시예Example 3> 3>

상기 실시예 1에 있어서, 제강 분진 94중량%, 무기질 분체 바인더 3중량% 및 폴리비닐알코올 3중량%를 혼합하는 것을 제외하고, 상기 실시예 1과 동일하게 실시하여 펠렛을 제조하였다.In Example 1, pellets were prepared in the same manner as in Example 1, except that 94% by weight of steelmaking dust, 3% by weight of inorganic powder binder, and 3% by weight of polyvinyl alcohol were mixed.

<< 비교예Comparative example 1> 1>

상기 실시예 1에 있어서, 제강 분진 97중량%, 무기질 분체 바인더 1중량% 및 폴리비닐알코올 2중량%를 혼합하는 것을 제외하고, 상기 실시예 1과 동일하게 실시하여 펠렛을 제조하였다.In Example 1, pellets were prepared in the same manner as in Example 1, except that 97% by weight of steelmaking dust, 1% by weight of inorganic powder binder, and 2% by weight of polyvinyl alcohol were mixed.

실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 비교예 1Comparative Example 1 제강 분진Steelmaking dust 96중량%96% by weight 94중량%94 wt% 94중량%94 wt% 97중량%97% by weight 무기질 분체 바인더Inorganic powder binder 2중량%2 wt% 4중량%4 wt% 3중량%3 wt% 1중량%1 wt% 폴리비닐알코올Polyvinyl alcohol 2중량%2 wt% 2중량%2 wt% 3중량%3 wt% 2중량%2 wt%

<< 실험예Experimental Example >>

상기 실시예 1 내지 3 및 비교예 1에서 제조된 펠렛의 압축강도를 측정하고, 그 결과를 하기 표 2 및 도 1의 그래프로 나타내었다.Compressive strength of the pellets prepared in Examples 1 to 3 and Comparative Example 1 was measured, and the results are shown in the following Table 2 and the graph of FIG.

실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 비교예 1Comparative Example 1 압축강도(MPa)Compressive strength (MPa) 3.43.4 5.25.2 5.65.6 1.71.7

상기 표 2에서 나타낸 바와 같이, 실시예 1 내지 3에서 제조된 펠렛의 압축강도는 2.0MPa 이상의 압축강도를 나타낸 반면, 비교예 1에서 제조된 펠렛의 압축강도는 2.0MPa 미만의 압축강도를 나타내었다.As shown in Table 2, the compressive strength of the pellets prepared in Examples 1 to 3 showed a compressive strength of 2.0 MPa or more, while the compressive strength of the pellets prepared in Comparative Example 1 showed a compressive strength of less than 2.0 MPa. .

Claims (6)

조성물 총 중량에 대하여, 제강 분진 90 내지 97중량%, 무기질 분체 바인더 2 내지 7중량% 및 액체 바인더 1 내지 3중량%를 포함하고, 상기 무기질 분체 바인더는 시멘트, 생석회 및 폴리아크릴산 나트륨을 포함하는 펠렛 조성물.90 to 97% by weight steelmaking dust, 2 to 7% by weight inorganic powder binder and 1 to 3% by weight liquid binder, the inorganic powder binder comprising cement, quicklime and sodium polyacrylate, based on the total weight of the composition Composition. 청구항 1에 있어서, 상기 무기질 분체 바인더는, 무기질 분체 바인더 총 중량에 대하여, 시멘트 70 내지 89.9중량%, 생석회 10 내지 29중량% 및 폴리아크릴산 나트륨 0.1 내지 1.0중량%로 포함하는 것을 특징으로 하는 펠렛 조성물.The pellet composition of claim 1, wherein the inorganic powder binder comprises 70 to 89.9 wt% of cement, 10 to 29 wt% of quicklime, and 0.1 to 1.0 wt% of sodium polyacrylate based on the total weight of the inorganic powder binder. . 청구항 2에 있어서, 상기 생석회는 산화칼슘 50중량% 이상인 것을 특징으로 하는 펠렛 조성물.The pellet composition according to claim 2, wherein the quicklime is 50% by weight or more of calcium oxide. 청구항 1에 있어서, 상기 액체 바인더는 폴리비닐알코올, 폴리비닐 아세테이트 및 에틸렌 비닐 아세테이트로 이루어진 군에서 선택되는 하나 이상인 것을 특징으로 하는 펠렛 조성물.The pellet composition of claim 1, wherein the liquid binder is at least one selected from the group consisting of polyvinyl alcohol, polyvinyl acetate, and ethylene vinyl acetate. 청구항 1의 펠렛 조성물을 이용한 제강 분진 펠렛.Steelmaking dust pellets using the pellet composition of claim 1. 청구항 5에 있어서, 상기 제강 분진 펠렛은 압축강도가 2.0MPa 이상인 것을 특징으로 하는 제강 분진 펠렛.The steelmaking dust pellet according to claim 5, wherein the steelmaking dust pellet has a compressive strength of 2.0 MPa or more.
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JP2020517837A (en) * 2017-04-18 2020-06-18 バインディング ソリューションズ リミティド Iron ore pellets
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KR100537665B1 (en) * 2002-05-15 2005-12-19 주식회사 케이.알.티 Method for preparing pellet to recycle byproduct from stainless steel manufacturing processes and pellet prepared therefrom
KR101018251B1 (en) * 2003-12-23 2011-03-03 재단법인 포항산업과학연구원 Briquette for steelmaking material using byproducts of steelmaking and method for manufacturing the same

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CN114605131A (en) * 2022-02-16 2022-06-10 南阳师范学院 Magnesium oxide acetate adhesive for cold consolidation forming of solid powder
CN114605131B (en) * 2022-02-16 2023-11-14 南阳师范学院 Magnesium oxide acetate adhesive for cold consolidation molding of solid powder

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