[go: up one dir, main page]

WO2023075512A1 - Procédé de production de poudre de laitier à faible teneur en carbone utilisant un laitier d'affinage, et mélange à prise rapide et composition de ciment utilisant une poudre de laitier ainsi préparée - Google Patents

Procédé de production de poudre de laitier à faible teneur en carbone utilisant un laitier d'affinage, et mélange à prise rapide et composition de ciment utilisant une poudre de laitier ainsi préparée Download PDF

Info

Publication number
WO2023075512A1
WO2023075512A1 PCT/KR2022/016728 KR2022016728W WO2023075512A1 WO 2023075512 A1 WO2023075512 A1 WO 2023075512A1 KR 2022016728 W KR2022016728 W KR 2022016728W WO 2023075512 A1 WO2023075512 A1 WO 2023075512A1
Authority
WO
WIPO (PCT)
Prior art keywords
slag
quick
particle size
fine powder
crushed
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/KR2022/016728
Other languages
English (en)
Korean (ko)
Inventor
최선미
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2023075512A1 publication Critical patent/WO2023075512A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators or shrinkage compensating agents
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/04—Carboxylic acids; Salts, anhydrides or esters thereof
    • C04B24/06—Carboxylic acids; Salts, anhydrides or esters thereof containing hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B5/00—Treatment of  metallurgical  slag ; Artificial stone from molten  metallurgical  slag 
    • 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
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the present invention relates to a method for producing slag powder using refined slag, and relates to a method for producing high-quality slag powder through an environmentally friendly manufacturing process and reducing carbon emissions.
  • the present invention relates to a quick-setting and quick-setting cement composition using the slag powder.
  • Refining slag contains 10-65% of C2S (2CaO SiO2) in the process, and when discharged in a molten state at about 1,600°C, C2S, which existed in the ⁇ phase, is gradually cooled and transitions to the ⁇ phase around 830°C.
  • C2S which existed in the ⁇ phase
  • it is powdered through a self-differentiation process for several hours to several days by volume expansion by 1.1 times. Due to this, it cannot be used as aggregate, and water is continuously sprayed on the yard due to scattering dust, and alkaline leachate is generated in the process, causing environmental problems. This is pointed out as the main cause of environmental pollution at the outdoor sites of steel mills. (See Fig. 2d. Photo of alkali leachate generation)
  • Si or Al is added as a deoxidizing agent along with quicklime (CaO) for desulfurization.
  • CaO quicklime
  • CA-based refining slag it contains 40-50% of CaO, 20-30% of Al2O3, and 5-15% of SiO2 as main oxides, and based on the above oxides, C12A7 (12CaO 7Al2O3, Mayenite), a quick-setting mineral It contains about 40-55% of ⁇ -C2S and contains 10-30% of ⁇ -C2S.
  • Even slow-cooled refining slag shows low reactivity to ⁇ -C2S but fast hydration by C12A7.
  • CA-based slag contains a large amount of quick-setting minerals, it is currently mixed with CS-based slag and discharged, thereby reducing the value of CA-based slag and causing severe quality fluctuation of discharged slag. Furthermore, in most steel makers, by mixing refining slag with oxidized slag and converter slag for discharge treatment (see Fig. 2b, photo of mixed discharge with oxidized slag), the value of oxidized slag and converter slag as aggregates is reduced, and at the same time, refining slag It is a situation that makes the value of use useless. In addition, as described above, in the cooling process after discharge, most of the steel yarns are sprinkled with water, thereby losing their value as a cement composition raw material. (See Fig. 2c. Photos of watering during slag treatment)
  • the cement industry as an industry with high greenhouse gas emissions, is facing an unprecedented crisis to achieve the carbon emission target compared to 2030 at the level of 11% of the total emissions of the industry.
  • the main raw material of cement is limestone, and in the process of firing limestone It emits 82.3% of the total emissions of the cement industry, and when producing 1 ton of cement, 0.83 CO2 ⁇ ton.eq. discharge
  • the present invention is a quick-setting or quick-setting cement composition that simultaneously possesses high-quality quick-setting performance and carbon emission reduction effect through a dry slow cooling process for CA-based slag without the need for a firing process. It was devised based on the fact that it can be manufactured.
  • Korean Patent Publication No. 10-2017-0122919 describes a 'hydraulic binder using dry annealed CA-CS steel slag'. This relates to the development of hydration characteristics and strength by mixing gypsum with CA-CS-based slag.
  • the focus on dry slow cooling is somewhat similar to that of the present invention, but the present invention is a technology that focuses on the characteristics of CA-based slag, and is a basic I'd say there's a difference.
  • Korean Patent Registration No. 10-1333084 discloses 'an early strong cement composition containing blast furnace slag and CSA cement and concrete containing the same'. Looking at the identification item [0027], while mainly using blast furnace slag as a main hardening raw material, it will be different from the present invention, which focuses on C12A7 raw materials, as not using C12A7 raw materials.
  • An object of the present invention is to provide a method for producing high-quality CA-based slag powder that is environmentally friendly and has low carbon emissions from refining slag.
  • An object of the present invention is to provide a quick-setting and quick-setting cement composition using the CA-based slag powder prepared by the above method.
  • An object of the present invention is to use a combination of classified slags to suit the properties of the slags classified according to the sorting standard particle size.
  • the solution includes a process separation step of preparing CA-based slag in a molten state
  • the dry slow cooling step it is characterized in that a process of recovering and recycling waste heat and collecting fine powder generated during cooling to generate dust-collected fine powder is additionally performed.
  • the fine powder collected together with the slag below the screening standard particle size is classified into Fe high content slag and Fe low content slag.
  • the screening standard particle size is characterized in that 10mm ⁇ 0.6mm.
  • the high Fe content slag recycling step is added after the magnetic separation step, characterized in that the high Fe content slag among the crushed Fe high content slag and the slag below the screening standard particle size is separately classified and accumulated.
  • a solution is a quick-settling agent manufactured using the first quick-setting fine powder manufactured by the above method.
  • the solution is a quick setting agent prepared by including the first quick setting fine powder and the second quick setting fine powder manufactured by the above method.
  • the solution is a quick-setting cement composition comprising at least one selected from the first fine powder and the second rapidly setting fine powder prepared by the above method, and a setting retardant.
  • the setting retardant is characterized in that at least one selected from tartaric acid, sodium citrate, gluconic acid and anhydrous citric acid.
  • the effect of the present invention is to improve the process of refining slag, which has been treated in landfills without existing utilization, and to provide a quick-setting cement composition having low carbon emissions by producing a quick-setting admixture without a firing process through a particle size and magnetic separation process. there is.
  • the cement composition contains 50% or more of CA minerals such as C12A7 and C3A and has excellent quick-setting properties, so it can be used for quick-setting compositions. It can be used for concrete applications that require strength development.
  • FIG. 1 is a block diagram showing a method for producing a quick-setting low-carbon cement composition using dry slowly cooled slag according to an embodiment of the present invention.
  • 3a to 3d are photographs of the results of the particle size screening step in the manufacturing method according to an embodiment of the present invention.
  • FIG. 4 is a table showing the particle size distribution of slag after the dry slow cooling step in the manufacturing method of an embodiment of the present invention.
  • 5A to 5C are photographs of the results of the magnetic separation step in the manufacturing method according to an embodiment of the present invention.
  • FIG. 6 is a graph showing the particle size distribution of the slag fine powder after the pulverization step in the manufacturing method of an embodiment of the present invention.
  • FIG. 7 is a graph showing the compressive strength as a hydration characteristic of the fine slag powder derived from 5 mm under size of the present invention.
  • 'refining slag' is a term used interchangeably with 'reduction slag', and it should be understood that the technical idea related to 'refining slag' described in this specification extends to 'reduction slag'.
  • Figure 1 is a block diagram showing a manufacturing method according to an embodiment of the present invention.
  • the manufacturing method includes a process separation step, dry annealing step, particle size screening step, coarse crushing step, magnetic separation step and fine grinding step.
  • This step is a step of securing and preparing CA-based slag in a molten state that is not mixed with CS-based slag among refining slag.
  • separate ports are provided to discharge oxidized and converter slag and refining slag to each port, and separate ports are provided so that CA-based and CS-based are separately discharged from refining slag so that they are discharged to each port. .
  • Table 1 below shows oxide composition ratios according to CS-based and CA-based slags.
  • CS-based slag and CA-based slag show a large difference in oxide composition, and in particular, a large difference in SiO2 and Al2O3 contents due to process characteristics depending on the type of reducing agent used.
  • the CS-based Al2O3 content is 5-15% and the CA-based content is 25-35%.
  • the currently secured slag is a mixed slag, and Table 1 below is self-separated, and it can be seen that there is some deviation in the component composition ratio.
  • the molten slag is moved to a cooling place using a pot and then completely differentiated without contact with water. That is, the slag discharged in a molten state is maintained and stored in the pot without contact with moisture until cooled to room temperature and moved to the sorting field.
  • Dry slow-cooled refining slag cooled without contact with water can maintain its value as a raw material for quick-setting cement compositions as the minerals such as C12A7 and C3A it contains maintain high reactivity.
  • 3a to 3d are photographs of the results of the particle size screening step in the manufacturing method according to an embodiment of the present invention.
  • 3a slag resulting from dry annealing step
  • 3b, 3c particle size exceeding 5mm
  • 3d particle size less than 5mm.
  • 4 is a table showing an example of the particle size distribution of slag after the dry slow cooling step in the manufacturing method of an embodiment of the present invention.
  • the dry annealed refining slag is moved to a particle size sorting field and classified into 1 5mm over size and 2 5mm under size through particle size classification based on a 5mm sieve.
  • Dry slow-cooled refining slag shows a big difference in rapid crystallization and initial exothermicity depending on the particle size, so it is to classify the particle size and use it differently.
  • the range of the particle size classification sieve is 10mm to 0.6mm depending on the design conditions, and there is a possibility of variation depending on the required product amount. That is, the range of the sieve may vary according to the selection standard particle size.
  • the technical spirit of the present invention includes combining and using slags to suit the properties of the slags classified according to the selection standard particle size, and although the details based on the properties of the slags classified on the basis of 5mm are described in this specification, Different sorting standard particle sizes are applied and slags can be used in combination through the same property analysis. Therefore, it is natural that the present invention can also be applied by adopting a selection standard particle size within the range of 10 to 0.6 mm to fit the range of the fine aggregate standard particle size.
  • 5mm under size slag obtained by crushing 5mm over size slag and 2 5mm under size slag are all moved to a magnetic separator in a classified state and are magnetically separated.
  • 5A to 5C are photographs of results of the magnetic separation step in the manufacturing method according to an embodiment of the present invention.
  • 5c sample magnetically separated by particle size.
  • Dry slow-cooling refining slag shows a maximum Fe oxide content of 10% or more when pulverized without a magnetic separation step, which is a factor in reducing strength when used as a binder.
  • high Fe content can reduce the efficiency at the time of grinding due to ductility, it is necessary to control within 2% through Gauss control of the sorter during magnetic sorting.
  • the slag with high Fe oxide content selected by magnetic force can be reintroduced as a raw material for processing of steel makers, and can also be used as an Fe source for cement makers.
  • Table 2 and Table 3 below describe the oxide and mineral compositions after the magnetic separation step by particle size.
  • CA series cement products form a high unit price line by using bauxite, an expensive raw material, as an aluminate-based source, but the slag fine powder according to Example 1 is based on by-products and reduces the process. It is possible to secure price competitiveness through
  • FIG. 6 is a graph showing the particle size distribution of the slag fine powder after the pulverization step in the manufacturing method of an embodiment of the present invention.
  • Table 4 condensation and exothermic characteristics are described in the case of fine powder derived from 5 mm over size and unsatisfied powder derived from 5 mm under size.
  • Example 2 The rapid setting as Example 2 is summarized as follows: A sample with high Fe content by magnetic separation after dry annealing of CA-based slag among refining slag through process separation and crushing of 5 mm over size slag through particle size screening is excluded, and fine powder quick-settling having a powder degree of 5,000 to 7,000 cm 2 /g as a selected raw material Example 3. Low-carbon quick-setting cement composition using dry slow-cooling refining slag
  • Fine powder using slag derived from 5mm under size also contains 40 to 60% of CA minerals, so it shows rapid crystallinity when mixed with water. However, compared to the sample 1, the rapid crystallinity is relatively low. However, considering that it is possible to secure working time by using a retardant after mixing the sample with water, it can be molded after mixing and used as a quick-setting cement that requires rapid strength development (more than 3MPa in 3 hours). Aged 28 days strength can also express more than 20MPa.
  • Example 3 also has the characteristics of low carbon and price competitiveness like Example 2.
  • all raw materials, except for a small amount of retardant, are recycled from industrial by-products to increase added value, and all refining slag is recycled to have the environmental advantage of being a zero-waste process product.
  • Example 3 The composition as Example 3 is summarized as follows: Through process separation, only CA-based slag among refining slag (or reduction slag) is subjected to dry slow cooling, and 2 5 mm under size slag is magnetically separated through particle size screening to obtain Fe content. Excluding this high sample, the fine powder with a fineness of 5,000 to 7,000 cm 2 /g as the selected raw material, and the setting retardant added to solve the difficulty of securing working time in the rapid setting are tartaric acid, sodium citrate, gluconic acid and A quick-setting cement composition containing 0.2-2.0% of at least one selected from anhydrous citric acid.
  • Example 2 an expedited setting using fine powder derived from 5 mm over size was proposed, but it can be used as an expedited setting by mixing fine powder derived from 5 mm over size and fine powder derived from 5 mm under size.
  • fine powder derived from 5 mm over size was mixed with fine powder derived from 5 mm over size and fine powder derived from 5 mm under size.
  • it can be used when it is necessary to adjust the rapid setting initial hardening according to the demand of the consumer according to the field situation. This is possible because the content of each fine powder can be adjusted based on the characteristics of each fine powder.
  • Example 5 Low carbon cement composition using dry slowly cooled refining slag
  • Example 3 a cement composition using fine powder derived from 5 mm under size was presented, but it is also possible to prepare a cement composition by mixing fine powder derived from 5 mm over size. This can also be used when design changes are required according to field conditions. This is also possible because the content of each fine powder can be adjusted based on the characteristics of each fine powder.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Environmental & Geological Engineering (AREA)

Abstract

La présente invention concerne : une composition de ciment à faible teneur en carbone utilisant un laitier d'affinage ; et une technique de traitement pour celle-ci. Selon la présente invention, il est possible d'améliorer un processus concernant un laitier d'affinage, qui a été conventionnellement disposé dans des décharges sans être utilisé, et produire une composition de ciment à prise rapide sans processus de cuisson par le biais des processus de tri granulométrique et de tri magnétique du laitier d'affinage, ce qui a pour effet de fournir une composition de ciment à prise rapide ayant une faible empreinte carbone.
PCT/KR2022/016728 2021-10-29 2022-10-28 Procédé de production de poudre de laitier à faible teneur en carbone utilisant un laitier d'affinage, et mélange à prise rapide et composition de ciment utilisant une poudre de laitier ainsi préparée Ceased WO2023075512A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2021-0146260 2021-10-29
KR1020210146260A KR102402784B1 (ko) 2021-10-29 2021-10-29 정련슬래그를 이용한 저탄소 슬래그 분말 제조방법, 상기 방법으로 제조된 슬래그 분말을 이용한 급결제 및 시멘트 조성물

Publications (1)

Publication Number Publication Date
WO2023075512A1 true WO2023075512A1 (fr) 2023-05-04

Family

ID=81809413

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2022/016728 Ceased WO2023075512A1 (fr) 2021-10-29 2022-10-28 Procédé de production de poudre de laitier à faible teneur en carbone utilisant un laitier d'affinage, et mélange à prise rapide et composition de ciment utilisant une poudre de laitier ainsi préparée

Country Status (2)

Country Link
KR (1) KR102402784B1 (fr)
WO (1) WO2023075512A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102402784B1 (ko) * 2021-10-29 2022-05-26 최선미 정련슬래그를 이용한 저탄소 슬래그 분말 제조방법, 상기 방법으로 제조된 슬래그 분말을 이용한 급결제 및 시멘트 조성물
KR20250047556A (ko) 2023-09-27 2025-04-04 주식회사 씨에스엠 철강산업부산물을 주원료로 하고 높은 염해저항성을 갖는 속경성 시멘트 조성물 및 이를 이용한 도로보수용 콘크리트 조성물

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0859317A (ja) * 1994-08-12 1996-03-05 Miyuki Kogyo Kk 軽量骨材及び／又は強度骨材の製造方法
KR20090075003A (ko) * 2008-01-03 2009-07-08 김용식 미니밀 슬래그를 이용한 속경성 시멘트 조성물 및 그의제조방법
KR101318935B1 (ko) * 2013-01-14 2013-10-17 미래특수화학(주) 콘크리트 구조물 보수 및 차수용 무기질계 무수축 초미립 주입재 조성물
KR101370609B1 (ko) * 2013-07-16 2014-03-06 이지혜 전기로 용융 슬래그를 이용한 무기질계 급결조성물 및 그 제조방법과 그 시공방법
KR20150101271A (ko) * 2014-02-26 2015-09-03 동부제철 주식회사 시멘트 광물계 급결제용 원료 제조장치 및 방법
KR102402784B1 (ko) * 2021-10-29 2022-05-26 최선미 정련슬래그를 이용한 저탄소 슬래그 분말 제조방법, 상기 방법으로 제조된 슬래그 분말을 이용한 급결제 및 시멘트 조성물

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101333084B1 (ko) 2011-12-02 2013-11-28 (주)네비엔 고로슬래그와 ｃｓａ계 시멘트를 포함하는 조강시멘트 조성물 및 이를 포함하는 콘크리트
KR20170122919A (ko) 2016-04-28 2017-11-07 공주대학교 산학협력단 건식 서냉 ca-cs계 철강슬래그를 이용한 수경성 결합재

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0859317A (ja) * 1994-08-12 1996-03-05 Miyuki Kogyo Kk 軽量骨材及び／又は強度骨材の製造方法
KR20090075003A (ko) * 2008-01-03 2009-07-08 김용식 미니밀 슬래그를 이용한 속경성 시멘트 조성물 및 그의제조방법
KR101318935B1 (ko) * 2013-01-14 2013-10-17 미래특수화학(주) 콘크리트 구조물 보수 및 차수용 무기질계 무수축 초미립 주입재 조성물
KR101370609B1 (ko) * 2013-07-16 2014-03-06 이지혜 전기로 용융 슬래그를 이용한 무기질계 급결조성물 및 그 제조방법과 그 시공방법
KR20150101271A (ko) * 2014-02-26 2015-09-03 동부제철 주식회사 시멘트 광물계 급결제용 원료 제조장치 및 방법
KR102402784B1 (ko) * 2021-10-29 2022-05-26 최선미 정련슬래그를 이용한 저탄소 슬래그 분말 제조방법, 상기 방법으로 제조된 슬래그 분말을 이용한 급결제 및 시멘트 조성물

Also Published As

Publication number Publication date
KR102402784B1 (ko) 2022-05-26

Similar Documents

Publication Publication Date Title
US11396478B2 (en) Method and system for producing low-alkalinity sulphoaluminate cement with new mineral system using steel slag
WO2023090878A1 (fr) Composition de ciment à prise rapide à faible teneur en carbone utilisant un laitier de raffinage
WO2012064004A1 (fr) Liant hydraulique durcissant de manière ultra-rapide utilisant des poudres de laitier de réduction, et procédé de préparation dudit liant
WO2023075512A1 (fr) Procédé de production de poudre de laitier à faible teneur en carbone utilisant un laitier d'affinage, et mélange à prise rapide et composition de ciment utilisant une poudre de laitier ainsi préparée
CN101172635A (zh) 利用废铝灰生产铝酸钙的方法
WO2020206833A1 (fr) Procédé de fusion tourbillonnaire, de réduction, de désalcalinisation, d'extraction de fer et de production directe de ciment à partir de boues rouges à forte teneur en fer
KR102528110B1 (ko) 비탄산염 원료를 포함한 클링커 조성물
CN101353177A (zh) 利用废铝灰生产六铝酸钙的方法
Alanyali et al. Concrete produced by steel‐making slag (basic oxygen furnace) addition in portland cement
AU2020103182A4 (en) Cementitious Material Containing Coal-to-liquids Coarse Slag and Preparation Method Thereof
KR20090120879A (ko) 고온 용융상태의 슬래그를 이용한 무기시멘트 클링커와 그제조방법 및 상기 클링커를 함유하는 무기시멘트
KR20120116896A (ko) 칼슘설포알루미네이트계 클링커 조성물，이를 포함하는 시멘트 및 이의 제조방법
WO2020206830A1 (fr) Procédé de récupération de sodium, de fer et de titane à partir de boue rouge et de cimentation directe de laitier en fusion
CN113087420A (zh) 一种炉前改性钢渣及其制备方法
CN1465538A (zh) 钢渣改质及钢渣水泥
CN104761160B (zh) 一种改性矿渣粉的制备方法
WO2020206831A1 (fr) Procédé de cimentation de résidus et de fer de recyclage de boue rouge à haute teneur en fer carbonisé calcifié
KR101257714B1 (ko) 칼슘설포알루미네이트계 클링커 조성물，이를 포함하는 시멘트 및 이의 제조방법
CN116803946A (zh) 一种全固废基的预拌流态泥浆固化剂及其制备方法
CN101450843B (zh) 铁铝复合矿综合利用的方法
WO2020206832A1 (fr) Procédé d'extraction de fer à partir de boues rouges à haute teneur en fer et de cémentation directe
WO2017179769A1 (fr) Liant sans ciment à base de laitier de haut-fourneau contenant du chlorure de calcium ajouté
CN114163148A (zh) 一种含铁水脱硫尾渣的固废基胶凝材料及其制备方法
KR102293624B1 (ko) 시멘트용 중화석고 조성물, 시멘트용 중화석고 제조 방법 및 이에 의한 시멘트용 중화석고를 포함하는 시멘트
KR101366835B1 (ko) 탈황더스트를 이용한 시멘트 조성물

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22887707

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22887707

Country of ref document: EP

Kind code of ref document: A1