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公开(公告)号：KR100360115B1
公开(公告)日：2002-11-04
申请号：KR1019990059960
申请日：1999-12-21
Applicant: 재단법인 포항산업과학연구원 , 주식회사 한중
IPC: C04B7/19
CPC classification number: Y02P40/143
Abstract: 본발명은고형화브릭의제조방법에관한것으로, 고형화브릭의제조방법에있어서, 고로슬러지, 고로슬래그미분말과일반포틀랜드시멘트로구성된고화재를주원료로하고여기에알카리촉진제를첨가함으로써, 압축강도및 물리화학적안정성이뛰어난고형화브릭을제조하는방법을제공하고자하는데, 그목적이있다. 본발명은고로슬러지를이용한브릭제조에있어서, (a) 고로슬러지; 및 (b) 4000㎠/g 이상의고로슬래그미분말/일반포틀랜드시멘트의중량비가 0.25~4로구성되는, 상기고로슬러지에대한 30~50중량부의고화재를주원료로하고, 여기에알칼리촉진제를상기고로슬러지에대해 1~3중량부첨가하고, 수분의양을제어한후, 혼합및 압축성형한다음양생하는것을특징으로하는고형화브릭의제조방법에관한것을그 기술적요지로한다.
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公开(公告)号：KR100345743B1
公开(公告)日：2002-07-27
申请号：KR1019990060282
申请日：1999-12-22
Applicant: 주식회사 포스코 , 재단법인 포항산업과학연구원 , 주식회사 대성케미칼
IPC: C01G53/10
Abstract: 폐니켈양극을이용하여고순도의황산니켈결정을제조하는방법에관한것으로, 폐니켈양극을가공하여니켈칩을제조한후 이에황산을 4당량비이상으로그리고물을황산과동일한부피로투입, 교반하고, 100℃이상의온도에서반응시켜아황산니켈분말을형성한후 이를여과하고여과된아황산니켈분말을수세하고슬러리화한다. 그후 슬러리화된아황산니켈분말에과산화수소수를동일한당량비이상의양으로투입하여산화시킴으로써황산니켈을형성하고황산니켈에 NiCO또는 Ni(OH)를투입하여용액의 pH를조절하여불순물을수산화물로침전, 제거한후 불순물이제거된황산니켈용액을결정화함으로써폐니켈양극을이용하여고순도의황산니켈결정을제조하게된다. 상기방법에의해녹스가스의발생없이폐니켈을이용하여고순도의황산니켈이제조되며, 이는전기도금액등으로이용가능한것이다.
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公开(公告)号：KR1020020051501A
公开(公告)日：2002-06-29
申请号：KR1020000080775
申请日：2000-12-22
Applicant: 주식회사 포스코 , 재단법인 포항산업과학연구원
IPC: G01N27/26
Abstract: PURPOSE: A method is provided to rapidly and accurately determine whether to remove neutralized salt from the neutralization sludge during manufacturing of chrome oxide, by measuring an electrical conductivity of neutralization sludge washing liquid. CONSTITUTION: A method comprises a first step of creating an electrical conductivity calibration curve in accordance with the change of density of neutralized salt solution produced by the reaction between the neutralization agent and a reduced trivalent chrome compound; a second step of determining the degree of washing the neutralized salt by measuring an electrical conductivity of the neutralization sludge washing liquid and applying the measured electrical conductivity to the electrical conductivity calibration curve created in the first step; and a third step of stopping neutralization sludge washing action if the electrical conductivity of the neutralization sludge washing liquid is lower than a reference level, and repeating the neutralization sludge washing action if the electrical conductivity is higher than the reference level.
Abstract translation: 目的：提供一种方法，通过测量中和污泥清洗液的电导率，快速，准确地确定在制造氧化铬期间是否从中和污泥中除去中和盐。 构成：一种方法包括根据中和剂和还原的三价铬化合物之间的反应产生的中和盐溶液的密度变化产生电导率校准曲线的第一步骤; 通过测量中和污泥洗涤液的电导率并将测得的电导率应用到在第一步骤中产生的电导率校准曲线来确定中和盐的洗涤程度的第二步骤; 以及如果所述中和污泥洗涤液的导电率低于参考水平，则停止中和污泥清洗动作的第三步骤，如果所述电导率高于所述参考水平，则重复所述中和污泥清洗动作。
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公开(公告)号：KR1020020050388A
公开(公告)日：2002-06-27
申请号：KR1020000079524
申请日：2000-12-21
Applicant: 재단법인 포항산업과학연구원
IPC: C04B18/14
CPC classification number: C04B28/08 , C04B2103/10 , Y02W30/94 , C04B18/141 , C04B7/02 , C04B18/14 , C04B40/0259
Abstract: PURPOSE: Provided are solidified bricks with improved compression strength and submersion resistance compared with conventional clay bricks by using alkali promoter. CONSTITUTION: Solidified bricks comprise 100pts.wt. of blast furnace sludge, 30-50pts.wt. of solidifier containing fine blast furnace slag powder having surface area more than 4000cm¬2/g and Portland cement in a weight ratio of 0.25-4.0, and 1-3pts.wt. of alkali promoter selected from steelmaking dust, mini-mill dust and sintered dust. Solidified bricks are manufactured by controlling water content to be the weight ratio of water to solidifier ranging from 0.2-0.5, mixing the above components, compression forming, and curing.
Abstract translation: 目的：通过使用碱促进剂，提供了与常规粘土砖相比具有改善的抗压强度和浸渍阻力的固化砖。 构成：固化砖包括100pts.wt。 的高炉污泥，30-50pts.wt。 的含有表面积大于4000cm2 / g的高炉渣粉末的固化剂和重量比为0.25-4.0和1-3pts.wt。的波特兰水泥。 碱性促进剂，选自炼钢粉尘，小型粉尘和烧结粉尘。 固化砖通过将水含量控制为水与固化剂的重量比范围为0.2-0.5，混合上述组分，压缩成型和固化来制造。
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公开(公告)号：KR100293198B1
公开(公告)日：2001-09-17
申请号：KR1019960067969
申请日：1996-12-19
Applicant: 주식회사 포스코 , 재단법인 포항산업과학연구원
IPC: C23F11/10
Abstract: PURPOSE: A method for restricting oxidation and corrosion of iron pellet(direct reduced iron) by immersing in octadecylamine(C18H39N) or oleic acid(C18H3O2) is provided. CONSTITUTION: The method comprises immersing iron pellets in an oleic acid solution at 50-130°C for more than 1 minute; drying the iron pellet in inert atmosphere at temperatures of lower than 50°C.
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Patent Agency Ranking
公开(公告)号：KR1020010064725A
公开(公告)日：2001-07-11
申请号：KR1019990059000
申请日：1999-12-18
Applicant: 주식회사 포스코 , 재단법인 포항산업과학연구원 , 주식회사 대성케미칼
IPC: C01B13/14
Abstract: PURPOSE: A method for improving filtration efficiency in a neutralization-synthesizing process by a wet method is provided which controls the increase of the specific surface area of particles by adjusting the pH value so that the filtration efficiency in a filtering process is improved. CONSTITUTION: A synthesizing method of an oxide or a hydroxide comprises steps of: (i) after mixing starting raw materials in an adequate ratio, neutralization-synthesizing the mixed materials by a wet method; (ii) separating an oxide or a hydroxide sludge from the product of the step (i); and (iii) removing impurities from the oxide or hydroxide sludge by repeatedly washing and filtering the separated oxide or hydroxide sludge to obtain the oxide or hydroxide. Wherein, the pH value of the oxide or hydroxide sludge maintains to 10-11 in the step (iii) to improve the filtration efficiency.
Abstract translation: 目的：提供一种通过湿法提高中和合成工艺中的过滤效率的方法，其通过调节pH值来控制颗粒的比表面积的增加，从而提高过滤过程中的过滤效率。 构成：氧化物或氢氧化物的合成方法包括以下步骤：（i）以足够的比例混合起始原料，通过湿法中和合成混合材料; （ii）从步骤（i）的产物中分离出氧化物或氢氧化物污泥; 和（iii）通过反复洗涤和过滤分离出的氧化物或氢氧化物污泥从氧化物或氢氧化物污泥中除去杂质，得到氧化物或氢氧化物。 其中，在步骤（iii）中氧化物或氢氧化物污泥的pH值维持在10-11以提高过滤效率。
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公开(公告)号：KR1020010056658A
公开(公告)日：2001-07-04
申请号：KR1019990058220
申请日：1999-12-16
Applicant: 주식회사 포스코 , 재단법인 포항산업과학연구원 , 주식회사 대성케미칼
IPC: C25D19/00
Abstract: PURPOSE: A supplementary conductive slurry material potassium chloride for electrolytic galvanizing process is provided which is not hardened and used conveniently. CONSTITUTION: The potassium chloride supplementary conductive slurry material for zinc and zinc-nickel electrolytic galvanizing process comprises 50 to 90 wt.% of supplementary conductive material potassium chloride; and 10 to 50 wt.% of water. Potassium chloride is prevented from being hardened during storage and easily put into the plating solution by using a potassium chloride slurry in which 50 to 90 wt.% of potassium chloride is contained as a supplementary conductive material.
Abstract translation: 目的：提供一种电解镀锌工艺的补充导电浆料氯化钾，不会硬化和使用方便。 构成：锌和锌 - 镍电解镀锌工艺的氯化钾辅助导电浆料为补充导电材料氯化钾的50〜90重量％ 和10至50重量％的水。 防止氯化钾在储存期间硬化，并通过使用其中含有50-90重量％的氯化钾的氯化钾浆料作为辅助导电材料容易地放入电镀溶液中。
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公开(公告)号：KR100262493B1
公开(公告)日：2000-08-01
申请号：KR1019960067970
申请日：1996-12-19
Applicant: 주식회사 포스코 , 재단법인 포항산업과학연구원
IPC: B01D49/00
Abstract: PURPOSE: Disclosed is a removal method of chlorine ion in iron oxide by the thermal treatment using ammonia and hydrogen. CONSTITUTION: The iron oxide containing chlorine ion is treated by the increasing temperature up to 350 - 450 deg. C under the nitrogen gas atmosphere and the thermal treatment at that temperature under the 20 - 40% ammonia and hydrogen mixed gas atmosphere for 30 min. The treated iron oxide is able to maintain below 240 - 530 ppm chlorine ion.
Abstract translation: 目的：公开了通过使用氨和氢的热处理在氧化铁中除去氯离子的方法。 构成：含氯离子的氧化铁通过升温至350-450℃进行处理。 在氮气气氛下进行热处理，并在该温度下在20-40％氨气和氢气混合气氛下进行热处理30分钟。 处理的氧化铁能够保持低于240-530ppm的氯离子。
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公开(公告)号：KR1019980048888A
公开(公告)日：1998-09-15
申请号：KR1019960067538
申请日：1996-12-18
Applicant: 주식회사 포스코 , 재단법인 포항산업과학연구원
IPC: B22F1/00
Abstract: 본 발명은 오디오, 비디오 등의 자기기록 매체에 사용되는 자성금속분말의 표면처리 방법에 관한 것이며, 그 목적은 자성금속분말의 표면을 스테아릭산금속염을 이용하여 처리함으로서 자성금속분말의 내산화성을 향상시키는 표면처리 방법을 제공함에 있다.
상기 목적을 달성하기 위한 본 발명은, 자성금속분말의 표면처리 방법에 있어서, 상기 자성금속분말의 전체 중량에 대하여 0.5~10중량%의 스테아릭산금속염을 유기용매에 용해시킨 후, 여기에 자성금속분말을 침적하여 그 표면에 유기금속염 피막을 형성시킨 다음, 유기용매를 완전히 증발시키는 자성금속분말의 표면처리 방법에 관한 것을 그 기술적 요지로 한다. -
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