baber/WOPTO huggingface dataset:
Patent KR-20010106385-A (KR)
Inventor: KIM KU HEI
IPC: B02C23/08
Filed: 2001-11-07
Abstract: A color cathode ray tube is provided with a saddle-shaped shadow mask. As a result, the sensitivity to doming and microphonics of the mask is improved. This is advantageous, in particular, for a cathode ray tube having a very flat display window. Preferably, the display device in which the cathode ray tube is employed is provided with two dynamic quadrupoles, for example, in front of the electron gun and in front of a deflection unit.
Patent KR-20030038215-A (KR)
Title: The resin interception water vcin
Inventor: CHOI MYUNG BU
IPC: C09D1/00
Filed: 2001-11-07
Abstract: PURPOSE: A resin capable of screening the water vein and its preparation method are provided, which can be applied to screen the water vein in the form of cloth or a glue. CONSTITUTION: The resin is prepared by mixing 400 g of aluminium powder and 400 g of conductive carbon; dissolving 200 g of nickel chloride into 300 ml of water; mixing the obtained solution into the mixture to prepare semi-solid; heating the obtained semi-solid at a temperature of 100 deg.C to dry it and to obtain a water vein screening metal powder; dissolving 170 of acryl rubber into 10,000 ml of toluene; mixing the water vein screening metal powder with the acryl rubber solution to prepare a resin; and coating the obtained resin on the surface of Nylon cloth. Also the resin is prepared by mixing 300 g of wheat flour and 100 g of starch; dissolving the mixture into 1,000 ml of water and heating it at a temperature of 90-100 deg.C to prepare a paste; adding 150 g of aluminium powder, 150 g of conductive carbon and 100 g of nickel chloride to the solution and adding 100 ml of water to the mixture; and heating the mixture at a temperature of 100 deg.C to obtain a water vein screening glue.
Patent KR-20030042074-A (KR)
Title: Organic electroluminescence device and method of making the same
Inventor: CHOI YEONG CHAN
IPC: H05B33/22
Filed: 2001-11-20
Abstract: PURPOSE: An organic electroluminescence device and a manufacturing method thereof are provided to reduce the manufacturing process and cost by inserting an insulating layer between two electrode layers and an organic luminescent layer to divide the organic electroluminescence device. CONSTITUTION: A plurality of first striped-type electrodes(22) are formed on a transparent substrate(21). The first insulating layer pattern, which is made of an inorganic material, is deposited on the first region that is perpendicular to the plurality of first electrodes(22) and the second region in parallel to the plurality of first electrodes(22). A plurality of organic luminescent layers are formed on the plurality of first electrodes(22). A plurality of second electrodes are deposited on the organic luminescent layers and perpendicular to the plurality of first electrodes(22).
Patent KR-20030042351-A (KR)
Title: Door packing assembly for a kim-chi storage
Inventor: LEE YEONG GIL
IPC: A23B7/10
Filed: 2001-11-22
Abstract: PURPOSE: A subject packing assembly having improved adhesion property by increasing total strength by additionally forming a reinforcing rib on a door gasket inserted into the gasket holder of a door inside wall is provided. Therefore, the packing assembly prevents the breakage of the gasket when in use for a long period of time and the acidification of kimchi. CONSTITUTION: A packing assembly containing a door gasket(120) comprises: a gasket holder(124) which contains a hook fit(124b) and is fixed to the inside of a door through a fastening device such as a screw or the like; a buffer part(122d) which contains a hooking protrusion(122b) being inserted into the hook fit to fix, maintains a predetermined distance from a height maintaining part(122a) and provides elasticity; and an adhesion part(122c) for maintaining an airtight seal by being adhered to the upper inner wall of the inner vessel of a kimchi storehouse. The door gasket is characterized in that it contains a reinforcing rib(122e) in which one end is connected to the buffer part and another end is connected to the adhesion part.
Patent KR-20030049294-A (KR)
Title: A method for manufacturing high nitrogen molten steel
Inventor: HONG SUN TAE
IPC: C21C5/28
Filed: 2001-12-14
Abstract: PURPOSE: A method for manufacturing high nitrogen molten steel is provided, which is characterized in that nitrogen gas is injected into molten steel through oxygen lance right after blowing operation to the extent that nitrogen content of molten steel become 40 to 90 ppm. CONSTITUTION: In a manufacture method of molten steel with high nitrogen content in which hot metal and iron scrap are used as main raw materials, the method is characterized in that nitrogen gas is injected into molten steel through oxygen lance in an amount of 2.5 to 3.5 Nm¬3/t·molten steel/min for 1 to 4 min after blowing.
Patent KR-20030051977-A (KR)
Title: A manufacturing method of green-tea's bean-sprouts using a green-tea powder and A green-tea's bean-sprouts by it's manufacturing method
Inventor: PARK YEON RAE
IPC: A01G31/00
Filed: 2001-12-20
Abstract: PURPOSE: Provided are a manufacturing method of bean-sprouts using green-tea powder and green-tea's bean-sprouts manufactured thereby. The green-tea's bean-sprouts has high quality and extended storage. CONSTITUTION: A manufacturing method of bean-sprouts is characterized by adding 0.5-2 part by weight of green tea powder and 30 part by weight of purified water to 100 part by weight of beans and maturing the mixture thereof at 18-20 deg.C for 24 hours; adding 400 part by weight of purified water thereto and leaving the beans at 18-20 deg.C for 4 days; and germinating the beans at 20 deg.C.
Patent KR-20030052161-A (KR)
Title: Guide roller apparatus of the automatic self aligning roller stand
Inventor: JIN JONG JIN
IPC: B21B31/00
Filed: 2001-12-20
Abstract: PURPOSE: A guide roller device used in an automatic self-aligning roller stand is provided to adjust the meandering of a belt regardless of a driving direction of the belt. CONSTITUTION: A guide roller device includes a pair of guide rollers(50), a supporting shaft(40), a supporter(74), a sliding shaft, and a spring. The guide rollers(50) are installed vertical to a carrier roller, which supports both lower sides of a belt. A semi-spherical protrusion is protruded from lower ends of the guide rollers(50). The supporting shaft(40) is fixedly installed at both ends of an automatic self-aligning roller stand so as to support the guide rollers(50). The supporter(74) has a sliding hole. The supporter(74) is installed on the supporting shaft(40). The sliding shaft is slidably inserted into the sliding hole. The spring elastically supports the sliding shaft.
Patent KR-20030054893-A (KR)
Title: Printer capable of dectecting quantity of paper in cassette and a method for checking the same
Inventor: LEE SEONG TAEK
IPC: B65H43/02
Filed: 2001-12-26
Abstract: PURPOSE: A printer with detecting the remaining amount of paper and a wrong operation checking method at detection of remaining paper are provided to improve the convenience by deciding wrong operation with comparing the prior remaining amount with the present remaining amount and by detecting the remaining amount accurately with correcting the reference value through the checking mode. CONSTITUTION: A printer comprises a cassette(10) storing paper; a detecting unit(20) detecting the remaining amount of paper stored in the cassette; a storage unit(30) memorizing the reference value of the remaining amount output from the detecting unit in leaving no paper in the cassette; a display unit(40) indicating the correction demand state against the reference value; an input unit(50) inputting the corrected reference value; and a control unit(60) controlling the display unit for indicating the correction demand state in case of the difference between the prior remaining amount and the present remaining amount to be over the predetermined value. The remaining amount of paper is detected accurately by checking detection of remaining paper.
Patent KR-20030057157-A (KR)
Inventor: CHOI JIN MIN
IPC: F23B101/00
Filed: 2001-12-28
Abstract: PURPOSE: A firewood boiler structure is provided to put a large amount of firewood into the boiler to solve the inconvenience of putting the firewood into the boiler at several times in a day. CONSTITUTION: A firewood boiler structure is composed of a firewood loading space(2) surrounded with a main body(1), a horizontal supporter(4) having a burner portion(3), a combustion chamber(5), and first and second blower(6a, 6b) for providing air to the firewood loading space(2) and burner portion(3). The horizontal supporter(4) has tapered surfaces at both ends. Air induced grooves are spaced with each other in parallel with the burner portion(3) side. The burner portion(3) having upper and lower burners is installed at the center of the horizontal supporter(4). A plurality of exhaust pipes(16) surrounded with a heat exchanger(17) are installed on an exhaust portion(15) communicated with the combustion chamber(5).
Patent KR-20030057944-A (KR)
Title: Plane light source using optical fiber and method thereof
Inventor: CHOI TAE HYEON
IPC: G02F1/13357
Filed: 2001-12-29
Abstract: PURPOSE: A flat light source using optical fiber and a manufacturing method thereof are provided to reduce the number of parts and the manufacturing cost by simply consisting a flat light source with a mold frame and diffusion panel embedding optical fiber and to minimize the unnecessary part except an active area. CONSTITUTION: Optical fiber is made by injecting an impurity to the boundary surface(S100). A mold frame having a fine reflection slit pattern is made(S200). A clamp recess and a clamp for fixing the visible ray optical fiber in the clamp recess are formed in the mold frame(S300). A reflecting member for reflecting the light emitted from the visible ray optical fiber to the center of the mold frame is integrally formed in the mold frame. A diffusion panel for uniformly diffusing the light emitted from the optical fiber is mounted(S400).
Patent KR-20010073020-A (KR)
Title: 3차원적이고 저마찰의 혈관 폐색 코일 및 그 제조 방법
IPC: A61B17/12
Filed: 1999-08-27
Abstract: 본 발명의 3차원의 저마찰 혈관폐색 코일(1)은 3차원으로 형성된 말단부(8')와, 선형 또는 헬리칼식으로 형성되는 근접부(9')를 구비한다.  상기 말단의 3차원 부분(8')은 처리될 맥관구조의 자리에서 해부학적인 캐비티용의 바스켓을 형성하는 반면에, 상기 근접부(9')는 바스켓을 충진하고 강화한다.  상기 혈관폐색 장치(1)는 처리될 맥관구조의 바람직한 부분에 카테테르 또는 캐뉼러를 통하여 그 내부로 삽입하기 위한 제 1의 비작동성의 선형 형상과, 처리될 맥관구조의 바람직한 부분을 폐색하기 위한 제 2의 비작동성의 3차원 형상을 구비하도록 형성되는 가요성 재료의 적어도 하나의 스트랜드로 형성된다.  상기 혈관폐색 장치(1)는 처리될 맥관구조의 자리에서 상기 해부학적인 캐비티를 충진하기 위한 제 2의 작동성의 3차원 형상을 구비하는 말단부(8')와, 처리될 맥관구조의 자리에 이식될 때 말단의 3차원 형상부분을 충진하고 강화하기 위한 제 2의 작동성의 선형 형상을 구비하는 근접부(9')를 구비한다.  상기 혈관폐색 장치를 제조하기 위한 방법에 사용하기 위하여 맨드릴이 제공된다.
Patent KR-20010086035-A (KR)
IPC: G06F12/06
Filed: 1999-11-15
Abstract: 메모리 제어기(904)에 의해 멀티뱅크형 메모리(908)에 포함되는 메모리 페이지의 메모리 접근 속도를 향상시키는 방법이 공개된다. 요청된 뱅크 번호와 요청된 페이지 번호를 포함하는 메모리 제어기(904)에 의해 유입 시스템 어드레스 요청이 수신된다. 요청된 뱅크 번호에 상응하는 페이지 레지스터가 비교기에 의해 위치하며, 위치한 페이지 레지스터에 포함된 저장된 페이지 어드레스는 요청된 페이지 어드레스와 비교된다. 저장된 페이지 어드레스가 요청된 메모리 뱅크에 대한 요청된 페이지 어드레스와 일치할 때, 요청된 뱅크 번호에 상응하는 메모리 뱅크의 요청 페이지에 접근이 이루어진다.
Patent KR-20010080596-A (KR)
IPC: A61K/
Filed: 1999-11-23
Abstract: 본 발명은 하기 화학식 Ia 또는 Ib의 화합물에 관한 것이다. 
     <화학식 Ia> 
     
       
     
     <화학식 Ib> 
     
       
     
     식 중, R 1 및 R 4 는 수소 또는 한정된 치환체이고, A는 1 또는 2개의 질소 원자를 갖는 4 내지 8원의 포화 또는 모노에테노이드 헤테로시클릭 고리이고, 여기서 하나의 산소 또는 황 원자가 추가로 존재할 수 있다.  상기 고리는 추가 치환될 수 있다. 
     본 발명은 또한 그의 토오토머형, 가능한 에난티오머 및 디아스테레오머형, 그의 프로드럭 및 가능한 생리학상 허용되는 염에 관한 것이다.  본 발명은 또한 병리학상 증가되는 PARP 활성에 관한 질병을 치료하기 위한 상기 화합물의 용도에 관한 것이다.
Patent KR-20010101470-A (KR)
IPC: H03H9/02
Filed: 2000-05-09
Abstract: 실리콘 기판(1)과, 실리콘 기판(1) 상에 형성된 질화 실리콘막(16)과 질화 실리콘막(16) 상측에 형성된 산화 실리콘막(2)으로 이루어지는 유전체막(21)과, 유전체막(21) 상에 형성된 하부 전극(3)과, 하부 전극(3) 상에 형성된 압전체막(17)과, 압전체막(17) 상에 형성된 상부 전극(5)을 구비하고, 상부 전극(5)이 존재하는 부위를 포함하는 영역에 대향하는 실리콘 기판(1) 부위의 두께 방향을 실리콘 기판(1)의 저면으로부터 질화 실리콘막(16)과의 경계면까지 제거함으로써 비어 홀(6)이 형성되어 있다.
Patent KR-20010101561-A (KR)
IPC: H01L21/28
Filed: 2000-11-07
Abstract: 본 발명은 트랜지스터 게이트 구조물(41, 42)을 형성하는 방법을 제공한다.  먼저 게이트 산화물층(41)이 형성된다.  게이트 재료(42)가 상기 게이트 산화물층(41) 상에 증착된다.  실리콘 옥시니트라이드층(43)이 상기 게이트 재료(42) 상에 증착된다.  상기 실리콘 옥시니트라이드층(43), 게이트 재료(42) 및 게이트 산화물층(41)이 에칭되어 게이트 구조물(41, 42)을 형성한다.  실리콘 옥시니트라이드 영역(43)은 게이트 구조물(41, 42)의 상부에 남는다.  습식 화학적 프로세스가 수행되어 게이트 구조물(41, 42)의 상부로부터 실리콘 옥시니트라이드 영역(43)을 제거한다.  습식 화학적 프로세스를 수행한 후에, 스페이서(61, 62)가 게이트 구조물(41, 42) 주위에 형성된다.
Patent KR-20010111492-A (KR)
Title: Standpipe inlet for enhancing particulate solids circulation for petrochemical and other processes
IPC: F23C10/24
Filed: 2000-02-18
Abstract: Process of transferring particulate solids out of a fluidized bed having a bulk density in the range of 0.32 0.64 g/cm<3> via a standpipe, protruding into said fluidized bed through the bottom wall of said fluidized bed, wherein the inlet of said standpipe for receiving particulate solids from the fluidized bed is located close to said bottom wall at a position where the local density is above 0.64 g/cm<3>.
Patent KR-20020064139-A (KR)
Title: Hot plug control of multiprocessor based computer system
IPC: G06F13/40
Filed: 2000-03-24
Abstract: A method of servicing a computer system without interrupting operation of the computer system, by connecting a computer component to a board of the computer system, detecting connection of the computer component to the system board using a control circuit, supplying power to the voltage input of the computer component in response to detecting the connection, and thereafter monitoring the power supplied to the voltage input of the computer component. The method may be used for core computer components such as CPU modules and voltage regulator modules. Power to the voltage input of the computer component is turned off in response to a determination that a current level of the power supplied to the voltage input exceeds a specified level. A fault signal is latched in an active state in response to the determination; the fault signal is reset when the component is removed from the system. The method also applies to a plurality of hot-pluggable components, wherein the power supplied to each component is individually monitored.
Patent KR-20020009606-A (KR)
IPC: C01B21/28
Filed: 2000-05-01
Abstract: 본 발명은 고온 가스와 접촉하는 금속 표면의 선택, 가스의 벌크 온도, 벽 온도, 압력, 접촉 시간 및 공간 표면 밀도를 조절함으로써 고 품질의 암모니아(통상, 90％보다 크고 99％ 만큼 높음)가 230℃의 통상의 한계치를 충분히 초과하는 온도(통상, 400 내지 700℃)에서 유지되는 암모니아 공급 가스의 비파괴 가열 및 공급 방법을 제공한다.  그러한 고온 가스는 특히 시안화수소의 제조에 유용하다.
Patent KR-20020020705-A (KR)
IPC: G01N19/04
Filed: 2001-03-13
Abstract: 먼저, 시료 누르기부(13,57)가 하강하여 시료가 눌려지고, 다음에 롤러(11) 또는 판형상부재(56)가 하강하여 시료(15)의 점착면(15A)의 사이에는, 테이프(23)가 개재되고, 시료(15)에 일정의 압착하중이 걸린다.  그리고, 일정시간 경과후, 롤러(11) 또는 판형상부재(56)의 상승에 의해, 테이프(23)가 시료(15)로부터 당겨지고, 그 때의 테이프(23)의 장력에 의해 로드셀(25)에서 박리력이 측정된다.  측정후는, 권취 릴(21,52)을 회전하여 테이프(23)를 소정 피치로 감아 올리고, 테이프(23)의 미사용부분을 롤러(11) 또는 판형상부재(56)의 선단으로 감아 나간다.
Patent KR-20020066959-A (KR)
Title: An agent for improving hypoalbuminaemia
Inventor: IENAGA KAZUHARU
IPC: A61K31/4166
Filed: 2002-01-17
Abstract: PURPOSE: To provide a hydantoin derivative which is useful as a safe medicine for hypoalbuminemia. CONSTITUTION: This hypoalbuminemia-improving medicine contains a hydantoin derivative represented by the general formula (I) (R1 and R2 are each identically or differently H, an alkyl or a cycloalkyl X and Y are each identically or differently H, an alkyl, OH or an alkoxy, or X and Y together form an oxo group) or its pharmaceutically acceptable salt as an active ingredient. As results of clinical tests, the administration of the compound exhibits to significantly raise the serum albumin value of a hypoalbuminemia patient to improve the hypoalbuminemia. Thereby, the compound is highly useful as a medicine for the hypoalbuminemia.
Patent KR-20030062808-A (KR)
Title: Cooling device with sealing cap for high-speed drawing in fiber drawing process
Inventor: JUNG GI TAE
IPC: G02B6/00
Filed: 2002-01-19
Abstract: PURPOSE: A cooling device for the high speed drawing of an optical fiber is provided, which is provided with a sealing cap minimizing the external effect by supplying the flow of reverse direction to the external air flown in along the drawn optical fiber. CONSTITUTION: The cooling device comprises a cooling body(10) where the heat is exchanged between the helium gas supplied from a helium gas supply part(214) and an optical fiber by passing the drawn optical fiber in high speed; and sealing caps(20) which are installed at the upper and under parts of the cooling body, respectively, and comprises at least one layered ring-shaped supply member(220, 222, 224) along the propagation direction of the optical fiber to supply the direction of a helium gas. The sealing cap supplies the flow of reverse direction to the external air flown in along the drawn optical fiber to minimize the effect of the external air.
Patent KR-20020066990-A (KR)
Inventor: LICHTENEGGER GERHARD
IPC: C21D6/00
Filed: 2002-02-08
Abstract: PURPOSE: A maraging steel with improved machinability, good weldability, and high corrosion resistance, maraging steel's use, and a process for the heat treatment of a maraging steel with improved machinability, which process produces an object that is through-hardened even with a large cross-section are provided. CONSTITUTION: The maraging steel with improved machinability, good weldability, and high corrosion resistance contains (in % by weight) 0.02-0.075% carbon; 0.1-0.6% silicon; 0.5-0.95% manganese; 0.08-0.25% sulfur; phosphorus present up to a maximum of 0.04%; 12.4-15.2% chromium; 0.05-1.0% molybdenum; 0.2-1.8% nickel; vanadium present up to a maximum of 0.15%; 0.1-0.45% copper; aluminum present up to a maximum of 0.03%; 0.02-0.08% nitrogen and residual iron, and impurities caused in manufacturing, wherein the steel has a ferrite percentage of less than 28% by volume. The process for heat treatment of a maraging steel with improved machinability, which process produces an object that is through-hardened even with a large cross-section, comprises subjecting a steel block with a composition (in % by weight) of 0.02-0.075% carbon; 0.1-0.6% silicon; 0.5-0.95% manganese; 0.08-0.25% sulfur; phosphorus present up to a maximum of 0.04%; 12.4-15.2% chromium; 0.05-1.0% molybdenum; 0.2-1.8% nickel; vanadium present up to a maximum of 0.15%; 0.1-0.45% copper; aluminum present up to a maximum of 0.03%; 0.02-0.08% nitrogen and residual iron, and impurities caused in manufacturing, to an annealing treatment for formation and adjustment of a ferrite percentage in the steel; thereafter hot forming with an at least 4-fold degree of deformation; thereafter soft annealing; and thermal tempering with at least one hardness treatment and at least one draw treatment.
Patent KR-20020070869-A (KR)
Inventor: CLAYTON THOMAS G
IPC: F27D7/02
Filed: 2002-02-28
Abstract: PURPOSE: Provided are 100% oxy-fuel glass furnaces and oxy-fuel boosting of air-fuel furnaces with or without the use of regenerators or recuperator heat recovery devices and/or oxygen enrichment. CONSTITUTION: The method of melting glass forming material in a glass melting furnace(10), the furnace having a back wall, breastwalls above sidewalls, and a downstream front wall connected to a roof, wherein at least one batch charger for charging glass forming batch material is contained in at least one of the back wall and the sidewall, comprises: providing at least one oxy-fuel burner(34) in the roof(22) of the furnace over the batch material, wherein at least one oxy-fuel burner is adapted for staged combustion; providing a flow of fuel to at least one oxy-fuel burner; providing a flow of gaseous oxidant in association with the at least one oxy-fuel burner; injecting the fuel and the oxidant into the furnace; and, combusting the fuel from at least one oxy-fuel burner such that at least a portion of combustion is effected in the vicinity of the glass forming material(30) to enhance convective and radiative transfer of heat to the glass forming material without substantially disturbing the glass forming material.
Patent KR-20030072451-A (KR)
Title: Mouse for Computer
Inventor: AHN YOUNG WHOO
IPC: G06F3/0354
Filed: 2002-03-04
Abstract: PURPOSE: A computer mouse is provided to instantly use the mouse without moving hand to grasp the mouse during typing by forming a main body of the mouse in a handle figure of a joystick and installing a band fixed to the back of a hand. CONSTITUTION: The main body(1) of the handle figure has a grip(11). A movement operating tool(3) formed to a side of the main body(1) has a ball(31) for operating the movement of a cursor. A scroll wheel(4) operates the movement of a screen. An appointing button(5) at a forefinger position gives an instruction for appointing a position of the cursor. A confirming button(6) at a middle finger position gives the instruction for confirming the position of the cursor. A double click button(7) at a ring finger position gives a double click instruction of the cursor. A center moving button(8) gives the instruction for moving the cursor to a center. The band(2) is connected to an upper and a lower ring(22,23), and a length of the band(2) is adjusted by a Velcro tape(21).
Patent KR-20020025940-A (KR)
Inventor: SON YOUNG SUK
IPC: A23C11/10
Filed: 2002-03-08
Abstract: PURPOSE: Provided is a method for manufacturing diet soybean milk by using medicinal herbs, seaweed, animals, plants, healthy foods and mushrooms. Therefore, the prepared soybean milk comprises pharmacological components, organic acids, various vitamins and other nutriments to be good for the old and the weak. CONSTITUTION: The manufacturing method of diet soybean milk containing pharmacological components is characterized by processing saccharification and fermentation of lactic acid, acetic acid and the like, with adding medicinal herbs, plants(roots, leaves, stems fruits), animals, seaweed, minerals, healthy foods and the like which contain pharmacological components and are described as in the description.
Patent KR-20030073490-A (KR)
Title: Wide Surveillance Camera using Panoramic View
Inventor: JUNG YOUNG KEE
IPC: H04N7/18
Filed: 2002-03-07
Abstract: PURPOSE: A camera for monitoring a wide area in a panoramic method is provided to automatically adjust pan/tilt of a camera so that a detected object is located always in the center of the camera. CONSTITUTION: One wide area panoramic background is generated from several pictures by using a video mosaic method(501). A camera obtains the current picture with continuously moving the monitoring range area and extracts a background picture corresponding to the current picture by matching the current picture with the panoramic background(502). Pixels of the current picture and the extracted background picture are compared to inspect changes of two frames to detect motion(503). A motion detection area formed of motion-generated pixels is set(504). Center coordinates of the motion detection area and center coordinates of the camera are set(505). The center coordinates of the motion detection area are adjusted to be consistent with the center coordinates of the camera(506).
Patent KR-20030075069-A (KR)
Title: Purification method and equipment for phosphoric acid
Inventor: KIM CHEOL UNG
IPC: C30B29/14
Filed: 2002-03-15
Abstract: PURPOSE: A method and device for purifying phosphate are provided, thereby rapidly and cheaply purifying phosphate. CONSTITUTION: A method for purifying phosphate comprises the steps of: (1) injecting unpurified phosphate(P2O5) material to a vaporization vessel having the temperature of 40 to 200 deg. C to concentrate the concentration of phosphate to 60 to 80%; (2) injecting the concentrated phosphate solution to a crystallization vessel having the temperature of -70 to 20 deg. C to prepare phosphate crystals; and (3) injecting the phosphate crystals to a partial dissolving device having the temperature of 20 to 80 deg. C to partially dissolve the phosphate crystals and stir the solution, wherein the unpurified phosphate material is lower phosphate prepared from phosphate ore by a dry or wet process; the phosphate crystal contains the total content of impurities of 100 to 30,000 ppb.