公开(公告)号：KR1020060070077A

公开(公告)日：2006-06-23

申请号：KR1020040108702

申请日：2004-12-20

Applicant: 재단법인 포항산업과학연구원

Inventor： 김대영

IPC: C04B18/14

CPC classification number: Y02W30/94 ,  C04B18/149 ,  B28B3/02 ,  C04B14/10 ,  C04B18/141 ,  C04B18/146 ,  C04B28/04 ,  C04B2111/00017 ,  C04B2201/52

Abstract: 본 발명은 고형화 브릭을 제조하는 방법에 관한 것이다.
본 발명은 철강 슬러지와; 알칼리 촉진제로서 소결더스트가 0.02~0.1중량부로 포함되고, 4000cm
2 /g 이상의 고로슬래그 미분말 대 일반 포틀랜드시멘트의 중량비 0.25~4를 갖도록 혼합된 혼합물이 상기 철강 슬러지에 대해 30~50중량부로 혼합된 고화재를 주원료로 하고, 상기 고화재에 중화제로서 점토, 실리카흄 또는 점토와 실리카흄 혼합물을 상기 철강 슬러지에 대해 10~50중량부로 첨가하며, 이의 수분 양을 제어한 후 혼합하고, 그 혼합물을 압축성형한 다음 양생하여 제조하는 고형화 브릭의 제조방법을 제공한다.
본 발명에 따르면, 고형화 브릭의 제조에 있어 중화제로서 점토와 실리카흄을 이용함으로써 침출수를 억제함은 물론 발생된 침출수라도 충분히 중화된 상태를 유지하기 때문에 생태계의 파괴나 환경오염을 미연에 방지하는 효과를 제공한다.
고형화, 브릭, 철강 슬러지, 중화제, 점토, 실리카흄, 양생

公开(公告)号：KR100419622B1

公开(公告)日：2004-04-17

申请号：KR1019980058104

申请日：1998-12-24

Applicant: 재단법인 포항산업과학연구원 ,  주식회사 포스코

Inventor： 이훈하 ,  김대영 ,  손진군 ,  이재영 ,  김병원

IPC: C04B24/36

Abstract: PURPOSE: A preparation method of asphalt concrete using stainless steel slag as aggregate is provided, which exhibits excellent dynamic stability and similar asphalt stability against water in comparison with the case using only sand as aggregate. CONSTITUTION: An asphalt concrete using stainless steel slag as aggregate is characterized by incorporating 6-12 wt.% of stainless steel slag and 0-6 wt.% of sand, and 5.5-6.5 wt.% of asphalt, based on the weight of asphalt concrete, further the volume of stainless steel slag and sand is 12 wt.% based on the total volume of asphalt concrete.

Abstract translation: 目的：提供一种以不锈钢渣为骨料的沥青混凝土的制备方法，与只用砂作骨料的情况相比，它具有优异的动态稳定性和类似的抗水性的沥青稳定性。 组成：使用不锈钢矿渣作为骨料的沥青混凝土的特征在于，其含有6-12重量％的不锈钢矿渣和0-6重量％的砂以及5.5-6.5重量％的沥青，基于 沥青混凝土，不锈钢渣和砂的体积以沥青混凝土的总体积计为12重量％。

公开(公告)号：KR100415645B1

公开(公告)日：2004-03-19

申请号：KR1019980056710

申请日：1998-12-21

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원

Inventor： 이훈하 ,  김대영 ,  이재영 ,  손진군

IPC: C01G3/02

Abstract: PURPOSE: A high-purity copper oxide is provided which is produced from etching wasted liquid without intermediate products and has seamless crystal phase. CONSTITUTION: A production process contains the following steps of: (1) a first step wherein a copper chloride wasted liquid is added to a sodium hydroxide with adjusting pH over 13.5 and the reaction proceeds for over 1 hours at over 50°C; (2) a second wherein the products generated in the above reaction are filtered and separated to obtain a metallic oxide powder(copper oxide); and (3) a third wherein the generated copper oxide powder is washed and filtered. Thereby, the adsorption and coprecipitation product of copper and chloride caused in producing the copper chloride from the copper chloride wasted liquid are prevented so that a high-purity copper oxide is produced.

Abstract translation: 目的：提供一种高纯度氧化铜，由无中间产物的腐蚀废液制成，具有无缝结晶相。 构成：生产过程包括以下步骤：（1）第一步，其中将氯化铜废弃液体加入到氢氧化钠中，调节pH值在13.5以上，反应在50℃以上进行1小时以上; （2）第二步，其中将在上述反应中产生的产物过滤并分离以获得金属氧化物粉末（氧化铜）; 和（3）第三步，其中生成的氧化铜粉末被洗涤和过滤。 由此，防止了氯化铜废弃液中的氯化铜的吸附共沉淀物的生成，生成高纯度的氧化铜。

公开(公告)号：KR100340489B1

公开(公告)日：2002-11-07

申请号：KR1019950048676

申请日：1995-12-12

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원

Inventor： 김병원 ,  변태봉 ,  손진군 ,  김대영

IPC: C23C10/28

Abstract: PURPOSE: A method of surface treating magnetic metal powder with stearic acid is provided to improve oxidation resistance of magnetic metal powder suitable for use in magnetic recording media. CONSTITUTION: In a surface treatment method of magnetic metal powder on the surface of which organic film is formed to improve corrosion resistance, the method is characterized in that magnetic metal powder is dipped in an organic solvent in which based on the total weight of magnetic metal powder, 0.5 to 10.0 wt.% of stearic acid is dissolved to form organic film on the surface of magnetic metal powder, and then organic solvent is completely evaporated, wherein the organic solvent is selected from alcohol, toluene and benzene.

公开(公告)号：KR100356177B1

公开(公告)日：2002-10-18

申请号：KR1019990058220

申请日：1999-12-16

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원 ,  주식회사 대성케미칼

Inventor： 이재영 ,  김병원 ,  이훈하 ,  김대영 ,  손진군

IPC: C25D19/00

Abstract: 아연및 아연-니켈등의전기아연도금공정에사용되는염화칼륨전도보조제 50∼90중량및물 10∼50중량로된염화칼륨전도보조제슬러리가제공되며, 이는장기간보관시에도굳지않으며용이하게투입하여사용할수 있다.

公开(公告)号：KR100349176B1

公开(公告)日：2002-08-21

申请号：KR1019990059000

申请日：1999-12-18

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원 ,  주식회사 대성케미칼

Inventor： 손진군 ,  이재영 ,  김대영 ,  김병원 ,  이훈하

IPC: C01B13/14

Abstract: 본발명은습식방식에의한중화합성공정에서의여과효율향상방법에관한것이며, 그목적하는바는습식공정을통해 NiO, CuO 등의산화물전자재료합성시, pH를조절하여입자의비표면적증가를억제함으로서, 여과공정에서여과효율을향상시킬수 있는방법을제공하고자하는데있다. 상기목적을달성하기위한본 발명은출발원료를적정비율로배합하여습식방식으로중화합성한다음, 합성에의해얻어진산화물이나수산화물슬러지를분리하고, 분리된산화물이나수산화물슬러지를수세및 여과를반복하여불순물을제거하여산화물이나수산화물을합성하는방법에있어서, 상기수세및 여과를반복하는과정에서의상기산화물이나수산화물슬러지의 pH를 10-11의범위로유지하는것을특징으로하는습식방식에의한중화합성공정에서의여과효율향상방법에관한것을그 요지로한다.

公开(公告)号：KR1020000040953A

公开(公告)日：2000-07-15

申请号：KR1019980056708

申请日：1998-12-21

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원

Inventor： 이훈하 ,  이재영 ,  김대영 ,  손진군

IPC: C01G49/02

CPC classification number: C01G53/006 ,  Y02W10/40

Abstract: PURPOSE: A production process of a nickel-zinc-copper ferrite is provided which utilizes an etching wasted liquid including nickel and iron chlorides generated in the process of manufacturing a shadow mask. CONSTITUTION: A production process contains the following steps of: (1) a first step wherein a ferrous ion is oxidized to a ferric ion in the wasted liquid with adding chlorines to the etching wasted liquid or hydrochloric acid under oxygen condition; (2) a second step wherein a metallic scrap that consists of nickel, copper and zinc is added to the oxidized solution in (1) and the used metal scrap is a half as much as the total mole number of ferric ion inside the etching wasted liquid; and (3) a third step wherein a ferrous chloride with twice as much as the total mole number in a nickel ion is added to produce Ni-Zn-Cu ferrite working solution with keeping the ratio of 2:1 between Fe¬+2 and Ni¬+2 + Zn¬+2 + Cu¬+2.

Abstract translation: 目的：提供一种镍 - 锌 - 铜铁氧体的制造方法，其利用在制造荫罩的过程中产生的包括镍和氯化铁的蚀刻废液。 构成：生产过程包括以下步骤：（1）第一步，其中在氧气条件下向蚀刻废液或盐酸中加入氯气将亚铁离子氧化成废液中的铁离子; （2）第二步，其中将由镍，铜和锌组成的金属废料加入到（1）中的氧化溶液中，并且所用的金属废料是蚀刻浪费内的铁离子总摩尔数的一半 液体; 和（3）第三步骤，其中加入两倍于镍离子总摩尔数的氯化亚铁以产生Ni-Zn-Cu铁氧体工作溶液，在Fe +2和 Ni + 2 + Zn 2+ + 2 + Cu 2+。

公开(公告)号：KR1020000040808A

公开(公告)日：2000-07-05

申请号：KR1019980056536

申请日：1998-12-19

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원

Inventor： 이훈하 ,  이재영 ,  손진군 ,  김대영

IPC: C01G49/00 ,  H01F1/10

CPC classification number: C01G53/006 ,  C01P2002/32 ,  Y02W10/40

Abstract: PURPOSE: A method for preparing the starting material for the preparation of Ni-Zn ferrites and a method for preparing Ni-Zn ferrites are provided, to recycle the Zn-Ni plating waste solution and to obtain more uniform Ni-Zn ferrites. CONSTITUTION: A starting material for preparing Ni-Zn ferrites is prepared by adding Fe¬2+ to the Zn-Ni plating waste solution to make the concentration 25-50 ppm; adding 0.5 mol times or more of oxygenated water based on the mol of Fe¬2+ to the waste solution; adding alkali to the solution to control the pH to be 3.5-5.5, thereby to generate sludgy; stirring the solution for 30 min to 3 hours at the temperature of 30-80°C to allow Si to be adsorbed; filtering the solution to remove impurities; adding NiCl2 to obtain the Zn_x Ni_(1-x) containing solution; adding KOH to the solution to control the pH to be 10-12 and to obtain hydroxide; filtering, washing and drying the hydroxide; and optionally heating the hydroxide at the temperature above 700°C to obtain Zn_x Ni_(10x) O powder. Ni-Zn ferrites are prepared by mixing the starting material with ferric oxide (Fe2O3) or copper oxide (CuO); and sintering the mixture at a temperature above 700°C.

Abstract translation: 目的：提供制备Ni-Zn铁氧体原料的方法和制备Ni-Zn铁氧体的方法，以再循环Zn-Ni电镀废液并获得更均匀的Ni-Zn铁氧体。 构成：通过向Zn-Ni电镀废液中加入Fe 2+，使浓度为25〜50ppm，制备Ni-Zn铁氧体的起始原料。 基于Fe 2+的摩尔量向废溶液中加入0.5mol倍以上的氧化水; 向溶液中加入碱以控制pH为3.5-5.5，从而产生污泥; 在30-80℃的温度下搅拌该溶液30分钟至3小时以使Si被吸附; 过滤溶液去除杂质; 加入NiCl 2得到含Zn_x Ni_（1-x）的溶液; 向溶液中加入KOH以将pH控制在10-12，得到氢氧化物; 过滤，洗涤和干燥氢氧化物; 并任选地在高于700℃的温度下加热氢氧化物以获得Zn_x Ni_（10x）O粉末。 通过将起始材料与氧化铁（Fe 2 O 3）或氧化铜（CuO）混合制备Ni-Zn铁氧体; 并在高于700℃的温度下烧结该混合物。

公开(公告)号：KR1020000039860A

公开(公告)日：2000-07-05

申请号：KR1019980055327

申请日：1998-12-16

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원

Inventor： 이훈하 ,  이재영 ,  김대영 ,  손진군

IPC: C01G37/02

CPC classification number: C01G37/02 ,  Y02W10/40

Abstract: PURPOSE: A method for preparing Cr(OH)3, the Cr(OH)3 prepared therefrom and a method for preparing chromium oxide are provided, to prepare chromium oxide without generating SOx, wherein the Cr(OH)3 does not contain SO4¬2-. CONSTITUTION: Cr(OH)3 which does not contain SO4¬2- is prepared by adding Cr¬3+ plating waste solution which contains SO4¬2- to the NaOH solution whose pH is more than 13, to control the pH to be more than 10, thereby to generate the neutralized sludge; and washing, filtering and drying the sludge. The chromium oxide (Cr2O3) is prepared by heating the Cr(OH)3 at the temperature of 800-1300°C without generating SOx.

Abstract translation: 目的：制备Cr（OH）3，由其制备的Cr（OH）3和制备氧化铬的方法，以制备氧化铬而不产生SO x，其中Cr（OH）3不含SO4- 2 - 。 构成：不含SO42-的Cr（OH）3通过将含有SO 4 2-的Cr 3+ +电镀废液添加到pH大于13的NaOH溶液中来制备，以控制pH值更多 从而产生中和的污泥; 并对污泥进行清洗，过滤和干燥。 通过在800-1300℃的温度下加热Cr（OH）3而不产生SO x来制备氧化铬（Cr 2 O 3）。

公开(公告)号：KR1020000039859A

公开(公告)日：2000-07-05

申请号：KR1019980055326

申请日：1998-12-16

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원

Inventor： 이훈하 ,  이재영 ,  김대영 ,  손진군

IPC: C01G37/033

CPC classification number: C01G37/033 ,  Y02W10/20 ,  Y02W10/40

Abstract: PURPOSE: A method for preparing chromic acid more economically is provided, which uses the Cr¬6+ containing waster solution. CONSTITUTION: A method comprises the steps of filtering the Cr¬6+ containing waste solution to remove insoluble impurities; adding an oxidizing agent to the solution to oxidize Fe¬2+ contained in the waste solution to Fe¬3+; adding NaOH to the solution to control the pH to be 3-5, thereby to generate the sludge of Fe3+; filtering the solution to remove the sludge; adding H2SO4 to control the pH to be 1-2; adding a reducing agent to the solution to reduce Cr¬6+ contained in the solution to Cr¬3+; adding NaOH to the solution to control the pH to be 7-11, thereby to generate Cr(OH)3 sludge; washing, filtering and drying the Cr(OH)3 sludge; and adding the equal equivalent of oxygenated water to the Cr(OH)3 sludge based on the amount of Cr(OH)3. Preferably the oxidizing agent is hydrogen peroxide or air, and the reducing agent is NaHSO3, Na2S2O5 or SO2 gas.

Abstract translation: 目的：提供更经济地制备铬酸的方法，其使用含Cr6 +的废水溶液。 构成：一种方法包括过滤含Cr6 +的废溶液以除去不溶性杂质的步骤; 向溶液中加入氧化剂以将废溶液中所含的Fe 2+置换成Fe-3 +; 向溶液中加入NaOH以控制pH为3-5，从而产生Fe3 +的污泥; 过滤溶液去除污泥; 加入H 2 SO 4将pH控制在1-2; 向溶液中加入还原剂以将溶液中所含的Cr-6 +还原成Cr +3 +; 向溶液中加入NaOH以控制pH为7-11，从而产生Cr（OH）3污泥; 洗涤，过滤和干燥Cr（OH）3污泥; 并根据Cr（OH）3的量向Cr（OH）3污泥中加入等量的含氧水。 优选地，氧化剂是过氧化氢或空气，还原剂是NaHSO 3，Na 2 S 2 O 5或SO 2气体。