公开(公告)号：KR1020040056503A

公开(公告)日：2004-07-01

申请号：KR1020020082996

申请日：2002-12-24

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원

Inventor： 조문규 ,  이석근 ,  황호근

IPC: B05B7/14

CPC classification number: B05B7/0416 ,  B05B7/24 ,  C21B7/06

Abstract: PURPOSE: Provided is a spray nozzle and a method for a shot-casting refractory castable using the same, to obtain more dense construction materials, and to improve adhesiveness but to reduce porosity of the construction materials. CONSTITUTION: The spray nozzle(11) includes air inlet tube(2) and an accelerating agent injection tube(3), two being separated from each other but being connected to a mixing unit(4), in which the aperture of the air inlets come in different sizes. More specifically, the ratio of the aperture sizes of the air inlets 6:3:1, in order to increase filling density by more than 20%. Approximately air having 3 - 8kg/cm2 of air pressure is supplied to the air inlets. When refractories in indeterminate form are supplied to the mixing unit(4), the compressed air supplied from the air inlet tube(2) primarily segment the refractories.

Abstract translation: 目的：提供一种喷雾喷嘴和使用其的喷射型耐火浇注料的方法，以获得更致密的结构材料，并提高粘合性，但是降低建筑材料的孔隙率。 构成：喷嘴（11）包括进气管（2）和加速剂注入管（3），两个相互分离但连接到混合单元（4），其中空气入口 有不同的尺寸 更具体地说，为了使填充密度增加20％以上，进气口6：3：1的孔径比例。 向空气入口供应约3〜8kg / cm2空气压力的空气。 当将不确定形式的耐火材料供应到混合单元（4）时，从空气入口管（2）供应的压缩空气主要分段耐火材料。

公开(公告)号：KR100428626B1

公开(公告)日：2004-04-28

申请号：KR1020010084533

申请日：2001-12-24

Applicant: 재단법인 포항산업과학연구원 ,  주식회사 케이에스티

Inventor： 조문규 ,  이성영

IPC: C09D1/00

Abstract: PURPOSE: Provided is an inorganic paint which is coated on the surface of the refinement ladle or the lance for blowing to prevent the adhesion of ingot gold or slag or to remove the adhered ingot gold or slag. CONSTITUTION: The inorganic paint comprises 40-60 wt% of inorganic powder whose value obtained by dividing the chromate content by the SiC content is 1-4; and the balance of water. At least one selected from odium silicate and potassium silicate whose value obtained by dividing the SiO2 content by the sum of the content of Na2O and the content of K2O is 1.5-3, is added to the inorganic paint in the amount of 10-20 wt% based on the content of the inorganic powder by extrapolation; and a clay-based inorganic compound comprising mainly SiO2 and Al2O3 is added to the inorganic paint in the amount of 0.5-3 wt% based on the content of the inorganic powder by extrapolation.

Abstract translation: 目的：提供一种涂覆在精炼钢包或喷枪表面上的无机涂料，用于吹制以防止锭金或炉渣的附着或除去附着的锭金或炉渣。 组成：无机涂料含有40-60％（重量）的无机粉末，其中铬酸盐含量除以SiC含量得到的值为1-4; 和水的平衡。 选自硅酸钠和硅酸钾中的至少一种，其中SiO 2含量除以Na 2 O含量和K 2 O含量之和得到的值为1.5-3，以10-20wt％的量加入到无机涂料中 基于外推法的无机粉末含量的％ 并且基于无机粉末的含量通过外推将基于SiO 2和Al 2 O 3的基于粘土的无机化合物添加至无机涂料中，其量为0.5-3wt％。

公开(公告)号：KR100349169B1

公开(公告)日：2002-10-18

申请号：KR1019970063380

申请日：1997-11-27

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원

Inventor： 조문규

IPC: C01B31/04

Abstract: PURPOSE: A process for fabricating powdery graphite coated with metal hydrides is provided, which can improve the oxidation resistance of graphite powder in the high temperature of 800 to 1000 deg.C by coating graphite powder with metal hydride uniformly. CONSTITUTION: The process comprises the steps of preparing a metal solution by mixing distilled water and aluminium or zirconium sulfate in molar rate of 0.05 to 0.1; mixing graphite powder and the metal solution in rate of 0.3 to 0.7 wt.%; agitating the mixture for 12 to 15 hours in the temperature of 80 to 83 deg.C; drying the mixture after agitation for 12 hours at 100 deg.C.

公开(公告)号：KR1020020051007A

公开(公告)日：2002-06-28

申请号：KR1020000080328

申请日：2000-12-22

Applicant: 재단법인 포항산업과학연구원 ,  주식회사 포스코

Inventor： 조문규

IPC: C04B35/10 ,  C04B35/66

CPC classification number: C04B35/101 ,  C04B35/66 ,  C04B2111/28 ,  C21B7/06 ,  F27D1/16

Abstract: PURPOSE: A high alumina castable refractory composition applied to bottom refractory of ladle for steelmaking is provided, which has heat resistance, mechanical shock, and abrasion by controlling particle sizes of refractory and aggregate. CONSTITUTION: The alumina castable refractory composition comprises the components of: 75-85wt.% of castable refractory mixture comprising 50-65wt.% of refractory with 1-10mm of size, 25-30wt.% of refractory with 0.075-1mm of size and 10-20wt.% of refractory with less than 0.075mm of size; 15-25wt.% of pellet-shaped coarse aggregate with 10-50mm of size; and optionally 10wt.% of alumina cement including alumina more than 80wt.% as a binder and 5.5-6wt.% of water.

Abstract translation: 目的：提供一种应用于炼钢钢包的底部耐火材料的高铝可浇铸耐火材料组合物，通过控制耐火材料和骨料的粒径，具有耐热，机械冲击和磨损。 构成：氧化铝可浇铸耐火材料组合物包括以下组分：75-85wt。％的浇注耐火混合物，其包含50-65wt。％的具有1-10mm尺寸的耐火材料，25-30wt％的具有0.075-1mm尺寸的耐火材料， 10-20重量％的小于0.075mm的耐火材料; 15-25重量％的具有10-50mm尺寸的颗粒状粗骨料; 和任选的10重量％的氧化铝水泥，包括作为粘合剂的80重量％以上的氧化铝和5.5-6重量％的水。

公开(公告)号：KR1020010063044A

公开(公告)日：2001-07-09

申请号：KR1019990059898

申请日：1999-12-21

Applicant: 재단법인 포항산업과학연구원 ,  주식회사 포스코

Inventor： 조문규

IPC: B22F9/00

Abstract: PURPOSE: A production method of a metal powder for preventing an oxidation is provided to have the excellent hydration resistance and the stable surface characteristic. CONSTITUTION: Metal Al powder is thermally processed at 550-620deg.C for 0.5hours in an oxygen partial pressure within 5X10¬-2 2X10¬-1 atm range. An Al2O3 oxidation layer is formed in the surface of the Al particle. Thereby, hydrogen gas is not generated and a hot oxidation of a black lead is prevented when mixing the Al metal powder with water. Moreover, a life of a refractory is lengthened by suppressing the oxidation of the black lead at high temperature.

Abstract translation: 目的：提供防止氧化的金属粉末的制造方法，具有优异的耐水合性和稳定的表面特性。 构成：将金属Al粉末在550-620℃热处理0.5小时，氧分压在5X10〜2×101--1atm范围内。 在Al颗粒的表面形成Al2O3氧化层。 因此，当将Al金属粉末与水混合时，不产生氢气，并且防止黑色铅的热氧化。 此外，通过抑制黑铅在高温下的氧化，延长耐火材料的使用寿命。

公开(公告)号：KR200227740Y1

公开(公告)日：2001-06-15

申请号：KR2020000036129

申请日：2000-12-22

Applicant: 재단법인 포항산업과학연구원 ,  주식회사 포스코

Inventor： 조문규

IPC: C21B7/06

Abstract: 본 고안의 목적은 피스톤 실린더의 왕복운동으로 내화물을 연속적으로 공급할 수 있고, 작업 후 세척이 용이하도록 착탈식으로 구성되는 것을 특징으로 하는 습식취부용 내화물 공급장치를 제공함에 있다.
이를 위해 본 고안은 보수재가 담아지는 호퍼와, 호퍼에 형성된 보수재투입관과 분사노즐로 이어지는 보수재분사관에 선택적으로 연결되어 보수재의 흡입과 배출이 이루어지는 다수개의 실린더와, 호퍼에 대해 탈착가능하게 설치되고 내부에는 상기 실린더가 길이방향으로 배열설치된 하우징통을 포함하여, 호퍼내의 보수재가 흡입배출되는 착탈부, 상기 하우징통 외측에서 실린더에 대응되는 위치에 실린더의 길이방향으로 설치되는 구동실린더와, 구동실린더의 피스톤로드 선단에 설치되어 실린더 내부에 놓여지는 피스톤, 하우징통의 중심축에 연결되어 하우징통을 왕복회동시키기 위한 구동모터와, 구동모터 제어수단을 포함하여, 보수재를 연속 흡입배출시키기 위한 구동부를 포함하는 습식 취부용 내화물 공급장치를 제공한다.

公开(公告)号：KR100286659B1

公开(公告)日：2001-04-16

申请号：KR1019960065177

申请日：1996-12-13

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원

Inventor： 조문규

IPC: C04B35/01 ,  C04B35/48

Abstract: PURPOSE: A method for preparing a dispersion suspension for the preparation of magnesia-zirconia-based ceramic slurry is provided, to improve the dispersive property of suspension, thereby obtaining magnesia-zirconia-based ceramic porous substance with good mechanical processability. CONSTITUTION: The method comprises the steps of mixing magnesia and zirconia to obtain a mixture comprising 27-33 wt.% of the powder with a size of 1-10 micrometers and 67-73 wt.% of the powder with a size of 10-45 micrometers; adding 0.3-0.8 wt.% of a peptizing agent selected from sodium polyphosphate, sodium polyacrylate, sodium methacrylate and their mixtures, to a distilled water with a pH of 10-12; and dispersing the mixture of magnesia and zirconia into the distilled water containing a peptizing agent, to obtain a dispersion suspension.

公开(公告)号：KR1020000043695A

公开(公告)日：2000-07-15

申请号：KR1019980060100

申请日：1998-12-29

Applicant: (재단법인) 포항산업과학연구원 ,  주식회사 포스코

Inventor： 조문규 ,  이성영

IPC: C04B35/10

CPC classification number: C04B35/10 ,  C04B35/66

Abstract: PURPOSE: An aluminium-based unshaped refractory composition is provided, to improve the resistance against heat impact (spalling-resistance) and the workability. CONSTITUTION: A aluminium-based unshaped refractory composition comprises 85 wt% or more of alumina (Al2O3); and 10-25 wt% of crude aggregate which contains 98 wt% or more of alumina. The crude aggregate comprises the crude aggregate in the form of a ball and the pulverized crude aggregate in the ratio of 0.15 to 0.30.

Abstract translation: 目的：提供铝基不定形耐火材料组合物，以提高耐热冲击性（抗剥落性）和加工性能。 构成：铝基不定形耐火材料组合物包含85重量％或更多的氧化铝（Al 2 O 3）; 和10-25重量％的含有98重量％或更多的氧化铝的粗骨料。 粗骨料包括球形的粗骨料和0.15至0.30的粉碎粗骨料。

公开(公告)号：KR1020000039557A

公开(公告)日：2000-07-05

申请号：KR1019980054921

申请日：1998-12-14

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원

Inventor： 조문규

IPC: C04B35/10 ,  C04B35/66

CPC classification number: C04B35/66 ,  C04B35/443 ,  C04B35/48

Abstract: PURPOSE: An alumina unshaped refractory composition is provided which has improved corrosion-resistance and permeation-resistance to slag, to extend the lifespan of refractories. CONSTITUTION: In an alumina unshaped refractory composition comprising 80 wt.% or more of alumina, 20-30 wt.% of magnesia-alumina spinel powder and zirconia powder based on the total weight are added to the composition. The ratio of magnesia-alumina spinel powder and zirconia powder is 0.5-2.2, and the average particle diameter of zirconia powder is preferably in the range of 20 to 50 micrometers.

Abstract translation: 目的：提供氧化铝不定形耐火组合物，其具有改善的耐腐蚀性和耐渣性，延长耐火材料的使用寿命。 构成：在包含80重量％或更多的氧化铝的氧化铝不定形耐火组合物中，将20-30重量％的氧化镁 - 氧化铝尖晶石粉末和基于总重量的氧化锆粉末加入到组合物中。 氧化镁 - 氧化铝尖晶石粉末和氧化锆粉末的比例为0.5-2.2，氧化锆粉末的平均粒径优选在20至50微米的范围内。

公开(公告)号：KR1019990052239A

公开(公告)日：1999-07-05

申请号：KR1019970071694

申请日：1997-12-22

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원

Inventor： 조문규

IPC: C04B35/103

Abstract: 본 발명은 Al
2 0
3 -SiC-C계 내화물에 관한 것이며; 그 목적은 Al
2 0
3 -SiC-C계 내화물에 CaO로 상안정화한 ZrO
2 분말을 적정량 함유하여 내산화성 및 슬래그에 대한 내침성이 우수한 내화물을 제공함에 있다.
상기 목적을 달성하기 위한 본 발명은, Al
2 0
3 -SiC-C계 내화조성물에 있어서, Al
2 0
3 -SiC-C계 내화물 100중량%에 대하여 입경이 1mm이하이고 5-8중량%의 CaO로 상안정화한 ZrO
2 분말이 5-10중량% 함유되어 이루어지는 알루미나-흑연질 내화물에 관한 것을 그 요지로 한다.