KR20010060417A - A method for manufacturing solidification brick - Google Patents

A method for manufacturing solidification brick Download PDF

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KR20010060417A
KR20010060417A KR1019990059960A KR19990059960A KR20010060417A KR 20010060417 A KR20010060417 A KR 20010060417A KR 1019990059960 A KR1019990059960 A KR 1019990059960A KR 19990059960 A KR19990059960 A KR 19990059960A KR 20010060417 A KR20010060417 A KR 20010060417A
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South Korea
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blast furnace
weight
furnace sludge
solidified
brick
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KR1019990059960A
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Korean (ko)
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KR100360115B1 (en
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김대영
손진군
이재영
김병원
이훈하
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신현준
재단법인 포항산업과학연구원
안인수
주식회사 한중
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    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/14—Cements containing slag
    • C04B7/147—Metallurgical slag
    • C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
    • C04B7/17—Mixtures thereof with other inorganic cementitious materials or other activators with calcium oxide containing activators
    • C04B7/19—Portland cements
    • 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

Abstract

PURPOSE: Provided are solidified bricks manufactured by adding alkaline promoter to raw materials, blast furnace sludge and solidifying materials, which have stability and improved compression strength compared with conventional clay bricks. CONSTITUTION: The method is characterized by adding 1-3pts.wt.(based on blast furnace sludge) of alkaline promoter to 30-50pts.wt. of solidifying materials comprising fine blast furnace slag powder(>4000cm2/g) and portland cement in a weight ratio of 0.25-4 and controlling water content to be a weight ratio of water/solidifying materials being 0.2-0.5, followed by pressing and curing for longer than 28days. The used alkaline promoter is at least one or two compounds selected from the group consisting of CaO, kiln dust, NaOH and Na2SiO3.

Description

고형화 브릭의 제조방법{A METHOD FOR MANUFACTURING SOLIDIFICATION BRICK}Manufacturing method of solidification brick {A METHOD FOR MANUFACTURING SOLIDIFICATION BRICK}

본 발명은 고형화 브릭의 제조방법에 관한 것으로, 보다 상세하게는 고형화 브릭의 제조에 있어서 고로슬러지와 고화재를 이용함으로써, 110kg/cm2이상의 강도와 우수한 물리화학적 안정성을 제공할 수 있는 고형화 브릭을 제조하는 방법에 관한 것이다.The present invention relates to a method for manufacturing a solidified brick, and more particularly, by using blast furnace sludge and solidified material in the manufacture of a solidified brick, a solidified brick capable of providing strength and excellent physicochemical stability of 110 kg / cm 2 or more. It relates to a manufacturing method.

일반적인 브릭의 제조방법에 관한 발명으로는 공개특허 87-5929호와 특허 공고 97-8689호가 대표적이다. 상기 공개특허 87-5929호에 개시된 발명은, 소각회, 석회류,알루미늄염, 및 탄산소다 염류로 이루어진 고화첨가제를 사용하여 브릭을 제조하는 방법에 관한 것이고, 상기 특허 공고 97-8689호에 개시된 발명은, 제강전로 슬래그 분말, 생석회, 및 시멘트 등을 보조 고화재로 사용하여 브릭을 제조하는 제조방법에 관한 것이다.Representative inventions related to the production of general bricks are representative Patent Publications 87-5929 and Patent Publication 97-8689. The invention disclosed in the above-mentioned Patent Publication No. 87-5929 relates to a method for manufacturing a brick using a solidifying additive consisting of incineration ash, lime, aluminum salt, and sodium carbonate salt, and is disclosed in the above-mentioned patent publication 97-8689. The present invention relates to a production method for producing bricks using steelmaking converter slag powder, quicklime, cement, and the like as auxiliary solidifying materials.

그러나, 이들 방법에서 사용된 고화재는 고가로 경제적이지 못하거나, 또는 우천시 물을 흡수하여 압축강도를 거의 상실해서 매립작업자체를 불가능해지게 하는 문제가 있다. 따라서, 이들은 토목용 브릭으로의 사용이 불가능한 실정이다.However, the fire used in these methods is not expensive and economical, or there is a problem that the landfill itself is impossible due to the absorption of water in the rain to almost lose the compressive strength. Therefore, they cannot be used as civil bricks.

이에, 본 발명자들은 상기한 종래 기술들의 제반 문제점을 해결하기 위하여, 연구 및 실험을 행하고, 그 결과에 근거하여 본 발명을 제안하게 된 것으로서, 본 발명은 고형화 브릭의 제조방법에 있어서, 고로 슬러지, 고로 슬래그미분말과 일반포틀랜드 시멘트로 구성된 고화재를 주원료로 하고 여기에 알카리 촉진제를 첨가함으로써, 압축강도 및 물리화학적 안정성이 우수한 고형화 브릭을 제조하는 방법을 제공하고자 하는데, 그 목적이 있다.Accordingly, the present inventors conducted research and experiments to solve the above-mentioned problems of the prior arts, and based on the results, the present invention proposes a solidification brick in the manufacturing method of blast furnace sludge, An object of the present invention is to provide a method for producing a solidified brick having excellent compressive strength and physicochemical stability by adding an alkali accelerator to the solidified material composed of blast furnace slag powder and general portland cement.

본 발명은 고로슬러지를 이용한 브릭제조에 있어서,The present invention provides a brick manufacturing using blast furnace sludge,

(a) 고로슬러지; 및(a) blast furnace sludge; And

(b) 4000㎠/g 이상의 고로슬래그 미분말/일반 포틀랜드시멘트의 중량비가 0.25~4로 구성되는, 상기 고로슬러지에 대한 30~50중량부의 고화재를 주원료로 하고, 여기에 알칼리 촉진제를 상기 고로슬러지에 대해 1~3중량부 첨가하고, 수분의 양을 제어한 후, 혼합 및 압축성형한 다음 양생하는 것을 특징으로 하는 고형화 브릭의 제조방법에 관한 것이다.(b) 30 to 50 parts by weight of solidified material with respect to the blast furnace sludge, wherein the weight ratio of blast furnace slag fine powder / generic Portland cement of 4000 cm 2 / g or more is 0.25 to 4, and the alkali accelerator is used as the blast furnace sludge. It relates to a method for producing a solidified brick, characterized in that the addition of 1 to 3 parts by weight and controlling the amount of water, followed by mixing and compression molding.

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

본 발명은 고형화 브릭을 제조함에 있어서, 고로 슬러지와 고화재를 주원료로 하고 알카리촉진제를 사용하는 것에 그 특징이 있다.The present invention is characterized by using blast furnace sludge and solidified material as the main raw material and using an alkali accelerator in producing a solidified brick.

상기 고화재는 4000㎠/g 이상의 고로슬래그 미분말/일반 포틀랜드시멘트의 중량비(이하, '고화재 구성비'라고 한다.)가 0.25~4.0로 구성되는 것이 바람직하다. 그 이유는 상기 구성비가 0.25 미만인 경우에는 일반포틀랜드 시멘트 사용량이 많아서 경제적이지 못하고, 반면에 상기 구성비가 4.0를 초과하는 경우에는 고형화 벽돌의 강도발현이 충분히 일어나지 않기 때문이다.The solidified material is preferably composed of 0.25 to 4.0 by weight ratio (hereinafter referred to as 'solidified composition ratio') of the blast furnace slag fine powder / general Portland cement of 4000 cm 2 / g or more. The reason is that when the composition ratio is less than 0.25, it is not economical because the amount of general Portland cement is large, whereas when the composition ratio exceeds 4.0, the strength expression of the solidified brick does not sufficiently occur.

또한, 상기 고화재의 함량은 상기 고로슬래그에 대해 30~50중량부인 것이 바람직한데, 그 이유는 그 함량이 30중량부 미만인 경우에는 고형화 벽돌의 강도발현이 충분히 일어나지 않고, 반면에 50중량부를 초과하는 경우에는 경제적이지 못하기 때문이다.In addition, the content of the solidified material is preferably 30 to 50 parts by weight with respect to the blast furnace slag, the reason is that when the content is less than 30 parts by weight, the strength expression of the solidified brick does not occur sufficiently, while the content exceeds 50 parts by weight This is because it is not economic.

상기 알카리촉진제는 CaO, 킬른더스트, NaOH, 및 Na2SiO3로 이루어진 알칼리촉진제 그룹으로부터 선택된 1종 또는 2종 이상인 것이 바람직한데, 상기 CaO 및 킬른더스트는 분말상태로 혼합하여 사용하고, 상기 NaOH과 Na2SiO3는 물에 용해시켜 사용하는 것이 바람직하다.The alkali promoter is preferably one or two or more selected from the group of alkali promoters consisting of CaO, kiln dust, NaOH, and Na 2 SiO 3 , wherein CaO and kiln dust are mixed and used in powder form, and the NaOH and Na 2 SiO 3 is preferably dissolved in water and used.

또한, 상기 알카리촉진제의 함량은 상기 고로슬래그에 대해 1~3중량부인 것이 바람직한데, 그 이유는 그 함량이 1중량부 미만인 경우에는 알칼리 촉진효과가 미흡하여 고화재의 수화를 지연시키므로 강도발현이 충분히 일어나지 않고, 반면에 그 함량이 3중량부를 초과하는 경우에는 불순물로 작용하거나 비용과다로 경제적이지 못하기 때문이다.In addition, the content of the alkali promoter is preferably 1 to 3 parts by weight with respect to the blast furnace slag, because if the content is less than 1 part by weight, the alkali promoting effect is insufficient to delay the hydration of the solidified material, so the strength is expressed. It does not occur sufficiently, on the other hand, if the content exceeds 3 parts by weight, it is because it does not act as an impurity or excessively economical.

한편, 상기 혼합물을 이용하여 고형화 브릭을 제조하는데 있어서, 상기 수분의 양은 물/고화재의 중량비가 0.2~0.5가 되도록 제어하는 것이 바람직하고, 상기 양생기간은 28일 이상으로 하는 것이 바람직한데, 그 이유는 양생기간 28일 미만인 경우에는 강도발현이 충분히 일어나지 않기 때문이다.On the other hand, in producing a solidified brick using the mixture, it is preferable to control the amount of water so that the weight ratio of water / solid material is 0.2 ~ 0.5, the curing period is preferably 28 days or more, The reason for this is that strength expression does not occur sufficiently when the curing period is less than 28 days.

이하, 실시예를 통하여 본발명을 보다 구체적으로 설명한다.Hereinafter, the present invention will be described in more detail with reference to Examples.

(실시예1)Example 1

고로슬러지, 고화재 구성비가 0.25~5.7이고 그 함량이 상기 고로슬러지에 대해서 25~50중량부인 고화재, 및 알카리촉진제로서 CaO을 상기 고로슬러지에 대해 1중량부 첨가하고, 물/고화재 비를 0.3으로 제어한 후, 이들을 혼합하였다. 상기에서 얻어진 혼합물을 성형틀(5cm×5cm×5cm)에서 3층 다짐(각층 15cm 높이에서 15회씩 낙하)으로 압축성형하고 탈형한 후, 상온에서 28일간 상대습도 90%이상에서 양생하여 고형화 브릭을 제조하였다. 그 다음, 고화재 함량 및 고화재 구성비에 따른 고형화 브릭의 28일 압축강도를 측정하고 그 결과를 하기 표1에 나타내었다.Blast furnace sludge, solids composition ratio of 0.25 to 5.7 and the content of 25 to 50 parts by weight of the blast furnace sludge, and 1 part by weight of CaO as an alkali promoter to the blast furnace sludge, and water / solids ratio After controlling to 0.3, these were mixed. The mixture obtained above was compression molded and molded in three layers (15 drops at 15 cm height in each layer) in a mold (5cm × 5cm × 5cm) and cured at 90% relative humidity for 28 days at room temperature to solidify the brick. Prepared. Then, the 28-day compressive strength of the solidified brick according to the solidified material content and solidified composition ratio was measured and the results are shown in Table 1 below.

구분division 고화재 함량(고로슬러지에 대한 중량부)Solid fire content (parts by weight of blast furnace sludge) 고화재 구성High Fire Composition 28일 양생후압축강도(kg/㎠)28 days post-cure compressive strength (kg / ㎠) ①고로슬래그미분말① Blast furnace slag powder ②일반포틀랜드시멘트②General Portland Cement 구성비(①/②의 중량비)Composition ratio (weight ratio of ① / ②) 비교예1Comparative Example 1 2525 6060 4040 1.51.5 102.5102.5 발명예1Inventive Example 1 3030 6060 4040 1.51.5 116.8116.8 발명예2Inventive Example 2 4343 2020 8080 0.250.25 127.2127.2 발명예3Inventive Example 3 4343 5050 5050 1One 122.3122.3 발명예4Inventive Example 4 4343 6060 4040 1.51.5 118.4118.4 발명예5Inventive Example 5 4343 8080 2020 44 113.1113.1 비교예2Comparative Example 2 4343 8585 1515 5.75.7 103.0103.0 발명예6Inventive Example 6 5050 6060 4040 1.51.5 125.7125.7

상기 표1에 나타난 바와 같이, 고화재 구성비가 0.25~4.0범위에 있고, 상기 고화재가 고로슬러지에 대해 30~50중량부 함유된 발명예(1~6)은 28일 압축강도가 모두 110kg/㎠ 이상이어서, 충분한 강도발현을 실현할 수 있음을 알 수 있다. .As shown in Table 1, the composition ratio of the solidified material is in the range of 0.25 to 4.0, the invention example (1 to 6) containing 30 to 50 parts by weight of the solidified material for the blast furnace sludge is all 110kg / 28 days compressive strength It can be seen that since it is 2 cm 2 or more, sufficient strength expression can be realized. .

(실시예2)Example 2

고로슬러지, 고화재 구성비가 1.5이고 그 함량이 상기 고로슬러지에 대해 43 중량부인 고화재, 및 알카리촉진제로서 CaO, 킬른더스트, Na2SiO3, 또는 NaOH을 상기 고로슬러지에 대해 0.5~3 중량부 첨가하고, 물/고화재 비를 0.3으로 제어한 후, 이들을 혼합하였다. 상기에서 얻어진 혼합물을 성형틀(5cm×5cm×5cm)에서 3층 다짐(각층 15cm 높이에서 15회씩 낙하)으로 압축성형하고 탈형한 후, 상온에서 3일, 7일, 28일간 상대습도 90%이상에서 양생하여 고형화 브릭을 제조하였다. 그 다음, 알카리촉진제의 종류 및 함량과, 양생기간에 따른 고형화 브릭의 압축강도를 측정하고, 그 결과를 하기 표2에 나타내었다.Blast furnace sludge, a solid fire composition ratio of 1.5 and a content of 43 parts by weight of the blast furnace sludge, and 0.5 to 3 parts by weight of CaO, kiln dust, Na 2 SiO 3 , or NaOH to the blast furnace sludge as an alkali promoter After adding and controlling the water / solid ratio to 0.3, these were mixed. The mixture obtained above is compression molded and demolded in a mold (5cm × 5cm × 5cm) in three layers (15 drops at 15cm height in each layer), and demolded at 90 ° C for 3 days, 7 days, and 28 days at room temperature. Cured at to prepare a solidified brick. Then, the type and content of the alkali accelerator and the compressive strength of the solidified brick according to the curing period were measured, and the results are shown in Table 2 below.

구분division 알칼리 촉진제Alkali accelerators 압축강도(kg/㎠)Compressive strength (kg / ㎠) 종류Kinds 함량(고로슬러지에 대한 중량부)Content (parts by weight of blast furnace sludge) 3일3 days 7일7 days 28일28 days 비교예3Comparative Example 3 CaOCaO 0.50.5 7.67.6 31.231.2 83.583.5 발명예7Inventive Example 7 1.01.0 10.110.1 38.738.7 118.4118.4 발명예8Inventive Example 8 3.03.0 13.213.2 43.843.8 143.6143.6 비교예4Comparative Example 4 킬른더스트Kilndust 0.50.5 3.73.7 55.155.1 93.493.4 발명예9Inventive Example 9 1.01.0 5.25.2 61.961.9 148.1148.1 발명예10Inventive Example 10 3.03.0 6.36.3 75.075.0 220.8220.8 비교예5Comparative Example 5 Na2SiO3 Na 2 SiO 3 0.50.5 30.730.7 63.563.5 89.689.6 발명예11Inventive Example 11 1.01.0 32.332.3 74.774.7 121.5121.5 발명예12Inventive Example 12 3.03.0 40.640.6 91.791.7 158.3158.3 비교예6Comparative Example 6 NaOHNaOH 0.50.5 36.836.8 76.276.2 103.4103.4 발명예13Inventive Example 13 1.01.0 47.347.3 92.192.1 148.2148.2 발명예14Inventive Example 14 3.03.0 68.868.8 143.8143.8 163.6163.6

상기 표2에서 알 수 있는 바와 같이, 알카리촉진제로서 본 발명의 CaO, 킬른더스트, Na2SiO3, 또는 NaOH을 고로슬러지에 대해 1중량부 이상 첨가하고, 28일 양생시킨 발명예(7~14)에서는 모두 110kg/㎠ 이상의 우수한 압축강도를 얻을 수 있었다.As can be seen in Table 2, as an alkali promoter, CaO, kiln dust, Na 2 SiO 3 , or NaOH of the present invention was added to the blast furnace sludge by 1 part by weight or more, and cured for 28 days (7 to 14). ), Excellent compressive strengths of 110kg / cm 2 or more were obtained.

상술한 바와같이 본 발명은, 고형화 브릭의 제조에 있어서 고로슬러지, 고화재를 이용함으로써, 산업부산물을 활용할 수 있고 또한 종래 점토벽돌의 압축강도 보다 우수한 강도발현을 실현할 수 있는 효과가 있다.As described above, the present invention has the effect that by using the blast furnace sludge and the solidified material in the manufacture of the solidified brick, industrial by-products can be utilized and the strength expression superior to the compressive strength of the conventional clay brick can be realized.

Claims (3)

고로슬러지를 이용한 브릭제조에 있어서,In brick manufacturing using blast furnace sludge, (a) 고로슬러지; 및(a) blast furnace sludge; And (b) 4000㎠/g 이상의 고로슬래그 미분말/일반 포틀랜드시멘트의 중량비가 0.25~4로 구성되는, 상기 고로슬러지에 대한 30~50중량부의 고화재를 주원료로 하고, 여기에 알칼리 촉진제를 상기 고로슬러지에 대해 1~3중량부 첨가하고, 수분의 양을 제어한 후, 혼합 및 압축성형한 다음 양생하는 것을 특징으로 하는 고형화 브릭의 제조방법(b) 30 to 50 parts by weight of solidified material with respect to the blast furnace sludge, wherein the weight ratio of blast furnace slag fine powder / general Portland cement of 4000 cm 2 / g or more is 0.25 to 4, and the alkali accelerator is used as the blast furnace sludge. 1 to 3 parts by weight of the aqueous solution is added, and the amount of water is controlled, followed by mixing and compression molding, followed by curing. 제1항에 있어서, 상기 수분의 양은 물/고화재의 중량비가 0.2~0.5가 되도록 제어하는 것을 특징으로 하는 고형화 브릭의 제조방법The method of claim 1, wherein the amount of water is controlled so that the weight ratio of water / solid material is 0.2 to 0.5. 제1항에 있어서, 상기 알카리촉진제는 CaO, 킬른더스트, NaOH, 및 Na2SiO3로 이루어진 알칼리촉진제 그룹으로부터 선택된 1종 또는 2종 이상인 것을 특징으로 하는 고형화 브릭의 제조방법The method of claim 1, wherein the alkali promoter is one or two or more selected from the group of alkali promoters consisting of CaO, kiln dust, NaOH, and Na 2 SiO 3 .
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100609136B1 (en) * 2000-12-21 2006-08-04 재단법인 포항산업과학연구원 A method for manufacturing solidification brick
CN107266095A (en) * 2017-07-21 2017-10-20 湖南众鑫新材料科技股份有限公司 A kind of smelted furnace cinder is reused in the method that stove is built by laying bricks or stones

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KR20040001078A (en) * 2002-06-26 2004-01-07 한국지질자원연구원 a Method for Materialization the Cement of Iron Manufacture Sludge and By-Product thereof
KR100896591B1 (en) 2002-12-24 2009-05-07 주식회사 포스코 A method for manufacturing solidification brick
KR101225259B1 (en) 2010-10-27 2013-01-22 현대제철 주식회사 A production method of brick using waste materials of steel making

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JP3584723B2 (en) * 1998-03-03 2004-11-04 宇部興産株式会社 Manufacturing method of hardened cement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100609136B1 (en) * 2000-12-21 2006-08-04 재단법인 포항산업과학연구원 A method for manufacturing solidification brick
CN107266095A (en) * 2017-07-21 2017-10-20 湖南众鑫新材料科技股份有限公司 A kind of smelted furnace cinder is reused in the method that stove is built by laying bricks or stones

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